Home Air Care Blog

For many people, an air purifier is a really beneficial addition to their home. It pulls pollutants out of the air, quietly working while you go about your day. But occasionally, some people notice a bit of irritation after running one. So what's actually going on here? While a well-looked-after, high-quality air purifier won't make you sick, the problems usually trace back to a specific type of purifier, poor user maintenance, or a placement issue.  Can Air Purifiers Actually Make You Sick? A properly functioning air purifier doesn't introduce anything harmful into your home — it does the opposite, in fact. Multi-layer filtration systems capture fine particles, trap pollutants, and cycle cleaner air back into the room. That said, not all purifiers work the same way. And not all of them require the same care instructions either.  When something goes wrong with the device (a clogged filter, an ozone-emitting unit, or a purifier that's too small for the space), that's when symptoms can occur. The good news is that these issues are entirely avoidable. When May an Air Purifier Contribute to Sickness? Dirty or Neglected Filters A filter that’s overdue replacing stops capturing pollutants effectively. It might even start recirculating some of what it's already collected, releasing fine particles and, in some cases, microbial buildup back into the air in your home. Most manufacturers will tell you what the recommended filter replacement time is, so you know when the filter must be replaced to prevent this. The Dreame AirPursue™ PM20 Purifier, for example, displays filter-life reminders on its screen and in the Dreamehome app. The compound filter lasts up to 2 years, and the carbon filter up to 1 year.  Replacing the air purifier filters on schedule keeps your device working exactly as it’s meant to. Ozone-Generating Purifiers Some air purifiers (particularly ionizers and certain UV-based units) produce ozone as a byproduct. High concentrations of ozone can irritate the respiratory tract, cause coughing, chest tightness, and worsen some conditions like asthma. The EPA has flagged ozone generators specifically as a category of concern for indoor use.  Air purifiers that use physical filter layers, rather than electrical charge or ozone, don't produce any byproducts as they work. Wrong Unit for the Room Size A small air purifier in a large space won't circulate air often enough. It won’t be able to capture the pollutants from the air properly because it’s not powerful enough to clean the space. Coverage capacity matters.  Take the AirPursue™ PM20 Purifier, for example. This unit purifies up to 1,883 ft² (175 m²) in 15 minutes, which can make a meaningful difference in a large open-plan living space compared to a compact unit pushing air around a small area. Placement in a Restricted Space If you put a purifier in a corner or behind furniture, you’re limiting its ability to filter air effectively. Poor airflow means uneven coverage and lower performance, especially in bigger rooms. Therefore, the air isn’t being cleaned properly, and you’re not getting the full effects of the purifier. Symptoms Potentially Linked to Poor Air Purifier Use If your purifier isn't working as it should, you might notice: Headaches: Possibly linked to ozone exposure or dirty recirculated air from a clogged filter. Throat or airway irritation: Can occur with ozone-generating units or heavily soiled filters. Dry eyes or nasal dryness: More common in very low-humidity environments, sometimes made more noticeable by continuous airflow from a misplaced unit. Coughing or wheezing: Particularly in those sensitive to ozone or where filters haven't been changed for a long time. Worsened allergy symptoms: A dirty or expired filter can reduce filtration efficiency, allowing allergens to remain airborne longer. These are signs that something needs attention. Can Air Purifiers Spread Bacteria or Mold? In theory, a neglected filter in a humid environment could support microbial growth, which is why properly looking after your air purifier is so important. Research on HVAC systems shows that biological buildup in air-handling equipment is a concern when maintenance is skipped. The same logic could apply to standalone purifiers. The solution is easy, though: Replace the device’s filters as recommended by the manufacturer Keep your purifier in a well-ventilated area Avoid placing it in high-humidity areas (like directly next to a humidifier) A clean filter captures. A dirty one compromises. The distinction is that simple. Can Air Purifiers Make Allergies Worse? In rare situations, yes, but only when the purifier isn't doing its job properly. An old filter will gradually lose the ability to trap fine particles. If it’s very old or overdue a change, it may start to release some of those particles back into circulation rather than keeping them captured. If you've noticed your allergy symptoms aren't improving or seem to be getting worse, a filter change is usually the first thing worth checking for. Why Most Air Purifiers Are Safe to Use Well-designed air purifiers with multi-layer systems physically capture particles as air passes through, then return cleaned air to the room. The benefits of running an air purifier consistently (like lower allergen levels and better odor control) are well-documented and represent the normal experience for the majority of people who use them. When people find they come across problems with using an air purifier, they're almost always linked to avoidable factors: wrong purifier type, missed maintenance, or poor placement. [product handle="pm20-air-purifier" rating="4.6"] How to Use an Air Purifier Safely So, to use an air purifier properly and avoid facing any problems, here’s a few tips: Replace filters on schedule. Check your model's recommended interval and stick to it. This is very important and worth repeating! Choose the right coverage. Match your purifier's rated coverage area to your actual room size. Running an undersized unit in a large space leaves too much air uncirculated. Position it well. Keep it away from walls and large furniture so air can flow freely. Central placement or near a main doorway tends to work best. Avoid ozone-generating units. Opt for multi-layer filter systems instead of ionizers or UV models that produce ozone as a byproduct. Run it consistently. An air purifier works best continuously, rather than just being something switched on every now and then. Many modern units include auto modes that adjust output based on real-time air quality, making 24/7 more practical. If you're not sure what your current air quality looks like, our guide to how to test indoor air quality at home is a useful starting point. What to Look for in a Safe Air Purifier Multi-Layer Filtration (No Ozone Production) Multi-filtration systems capture particles without producing byproducts.  Our PM10 and PM20 models use a 4-layer filtration system driven by 7 sensors, targeting fine particles and common household pollutants without introducing anything nasty into the air. Adequate Coverage for Your Space A purifier rated for your room size means faster air cycling and more consistent results. Undersized units leave too much untreated air in the room, reducing the overall impact.  Check the coverage specs before committing to a model. Real-Time Air Quality Monitoring Units with built-in sensors can automatically detect changes in air quality and adjust the output to match. This keeps performance consistent, and it means you don’t have to manually change the settings yourself all the time. Understanding air quality index readings can help you understand what your purifier's display is telling you. Quiet Operation A purifier you turn off at night because it's too noisy isn't doing its job during the hours you need it most.  Look for models with a dedicated quiet or sleep mode. The Dreame AP10 operates at <31.9 dB(A), roughly comparable to a quiet library. App Control and Smart Features Remote monitoring and scheduling let you stay on top of filter life, air quality trends, and operating modes without being in the room. It's a really useful feature that gives you much more control over the device and the air in your home, so you can see exactly what’s happening over time. Frequently Asked Questions Are There Side Effects of Using Air Purifiers? Side effects from a quality filtration-based purifier are uncommon. When they do occur (dryness, mild irritation), they're usually tied to a dirty filter, ozone-generating technology, or running a unit in a very dry environment. Switching to a passive filtration model and maintaining it properly resolves most of the issues. Is It Safe To Use an Air Purifier Every Day? Yes, and continuous use is generally how air purifiers perform at their best. Most pollutants re-enter the air throughout the day from cooking, foot traffic, open windows, and pet activity. Running your purifier consistently keeps levels in check, as opposed to repeatedly switching the purifier off and letting the pollutants build up. Is It Safe To Sleep With an Air Purifier On? Yes. Models with quiet or sleep modes are specifically designed for overnight use. Running a purifier through the night can also help reduce morning allergy symptoms, since many common indoor allergens remain airborne for hours. Use Air Purifiers Safely for Cleaner, Healthier Air A good air purifier that’s correctly maintained and sized for your space won't make you sick. The majority of problems come down to avoidable factors, such as ozone-generating technology, neglected filters, or units that aren't matched to the room. Stick to passive filtration, keep up with filter replacements, and choose a model built for your coverage needs. That's really all it takes to get consistent, clean air without any of the downsides. Ready to find the right fit for your home?  Browse our full range of air purifiers, each one designed to work quietly, effectively, and reliably, day and night. References: U.S. Environmental Protection Agency. Ozone Generators That Are Sold as Air Cleaners. https://www.epa.gov/indoor-air-quality-iaq/ozone-generators-are-sold-air-cleaners California Air Resources Board. Hazardous Ozone-Generating Air Purifiers.https://ww2.arb.ca.gov/our-work/programs/air-cleaners-ozone-products/hazardous-ozone-generating-air-purifiers Azuma, K. et al. (2020). Ventilation, indoor air quality, and health outcomes in office environments. National Library of Medicine. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7127325/

Tired of finding pet hair on every surface? While you can’t stop your pet from shedding completely, you can reduce how much of their hair stays in the air you breathe. Air purifiers help by capturing floating hair and microscopic dander before they settle, so your home feels cleaner, fresher, and easier to maintain day to day. Let’s break down what they can (and can’t) do, so you know what to expect in a pet-friendly home. Do Air Purifiers Help With Pet Hair? The Honest Answer While the general answer is yes, air purifiers can help with pet hair, the deeper truth is a bit more nuanced.  Visible floating hair and invisible airborne dander are two completely distinct problems, and a purifier addresses each one differently. The strands of floating hair that you see drifting across your room are large enough to be captured by a pre-filter, as long as the unit has sufficient airflow to draw them in.  The airborne dander is often the harder part, as these are microscopic particles that carry the proteins responsible for allergy symptoms. They can stay suspended in the air for much longer than visible hair strands. Air purifiers are effective at continuously cycling the air through filtration levels to reduce what's airborne, creating fewer settled particles on surfaces, upholstery, and furniture.  However, an air purifier cannot remove already settled hair.  Only vacuuming and regular grooming can treat that. For a comprehensive approach, combine a purifier with consistent cleaning and frequent grooming. An incomplete system will be noticeably less effective. Pet Hair vs. Pet Dander: Why the Difference Matters Pet hair and dander are often used interchangeably, but they're not the same, and knowing what these differences are is key to choosing the right air purifier. Pet hair is visible and heavier, so it falls onto surfaces quicker. While hair itself isn’t a primary allergen, it can carry dander and other particles that trigger allergic reactions. Dander is microscopic skin flakes that can remain suspended in the air for hours before they eventually settle. It’s a common allergen that requires fine-particle filtration. Pet Hair Pet Dander Size Visible Microscopic (2-10 microns) Behavior When Suspended Falls quickly to surfaces Stays suspended in the air for extended periods Primary Concern Surface accumulation Airborne allergen exposure Primary Filtration Stage Pre-filter/outer layer Fine-particle filtration layer Capturable by a Purifier? Yes, when airflow is strong Yes, with the right filter media To address both, you need an air purifier with strong airflow to capture floating hair and advanced filtration layers to trap fine dander particles. Dreame’s multi-layer composite filters, for example, are designed to handle both challenges. How Air Purifiers Work for Pet Hair and Dander Air purifiers work by pulling in the air around you, filtering out what’s floating in it, and releasing cleaner air back out and into the room.  Over time, this helps reduce how much pet hair and dander stay airborne. In a pet home, this usually happens in three steps: A pre-filter captures larger particles like visible pet hair before it settles A fine filtration layer traps smaller particles like dander that can trigger allergies A carbon layer helps reduce pet odors, so your space feels fresher We design our systems to keep air moving consistently, so particles are continuously removed from the air you’re breathing. That means less hair floating around, fewer particles settling on surfaces, and a home that feels cleaner without constant effort. What Air Purifiers Can Realistically Remove in Pet Homes, and How Fast Air purifiers remove three primary categories of particles targeted in pet-friendly homes: hair, fine dander particles, and odor molecules.  Particle Likelihood of Removal by an Air Purifier Estimated Timeframe Notes Floating pet hair High Minutes Requires strong intake and pre-filter Airborne dander Moderate-High Hours (with continuous operation) Requires fine particle filtration layer Pet odor (VOCs) Moderate Ongoing Requires activated carbon layer Settled hair and dander N/A N/A Purifiers do not remove settled particles Fine dust carried on pet hair Moderate-High Hours Captured alongside dander in filtration stages How quickly you notice a difference depends on your room size, the purifier’s coverage, and how often it’s running. A properly sized unit running consistently will steadily improve air quality, rather than changing it instantly. A big benefit of keeping the air purifier on throughout the day is that less hair and dust will settle on surfaces. That results in a home that feels cleaner without as much effort to maintain. When an Air Purifier Actually Helps With Pet Hair Seasons of high shedding: Dogs and cats shed more heavily in the spring and the fall. Running a purifier continuously during these peak periods minimizes floating hair that accumulates in the air and resettles on room surfaces. Homes with free-ranging pets: As pets move throughout the home, their hair and the dander will spread, too. A unit with sufficient coverage for your space prevents the airborne load from building up. At a certain point, it may make sense to add extra air purifiers for maximum effectiveness. Homes with pet-allergic occupants: Since airborne pet dander is the most closely associated trigger for pet allergies, consistently filtering your air will reduce the concentration of dander in the air before it can reach their airways, which is how they'll feel the biggest impact on their comfort. After grooming: Grooming temporarily spikes levels of hair and dander. Running your purifier at the highest setting during and after grooming sessions clears out what's been disturbed into the air. Sleeping areas overnight: If your pet shares a sleeping space with you, you're continuously exposed to dander overnight. Use a purifier on sleep mode to reduce what's airborne during the time when you're most stationary, and recovery is critical. What to Look for in an Air Purifier for Pet Hair When you're searching for an air purifier to specifically target pet hair in your home, knowing what to look for will steer you towards an effective solution. Airflow Design A purifier that draws in air only from one side works well for the particles directly in front of the intake.  However, it's not effective for pet-friendly homes because it’ll miss the floating hair that drifts across the room or accumulates near the floor and edges of your furniture. Look for a purifier with 360° or multi-directional air intake, combined with strong suction power. This type of design pulls in air from all sides of the room, helping capture floating hair no matter where it moves.  The Dreame AP10 Pet Air Purifier uses 360º High Negative Pressure Air Return to draw in air from all directions and uses a strong enough pull to capture floating air, including particles near furniture or lower to the floor.  Room Coverage vs. Your Space Always match the purifier's stated coverage area to your actual room.  If a unit is rated for 500 sq. ft. (46 m²) but is running in a 1200 sq. ft. (111 m²) open-plan space, it won't cycle and clean the air frequently enough to maintain clean conditions. If your home has heavy shedders, consider sizing up to a unit that's rated for a larger space than your room to give the system more capacity to keep up with a higher particle load.  The AP10 covers 1346 sq. ft. (125 m²), making it a well-matched option for open living areas. Multi-Layer Filtration Pet hair, dander, and odors each behave differently, so no single filter can handle everything on its own. A multi-layer filtration system allows the purifier to capture larger hair, fine airborne particles, and odors all at once. Many systems focus heavily on dense filters to capture smaller particles. But filtration isn’t just about how fine the filter is; it’s also about how much air the system can move. We take a balanced approach, combining effective particle capture with strong airflow. It helps more of your room’s air pass through the purifier more often, which plays a bigger role in keeping your air consistently clean. Noise Level If the operational noise is too loud, it can disturb sensitive pets. A quieter operation means that you can keep the purifier on without causing stress to animals in the room.  Look for sleep or quiet mode options with decibels around 32db(A) or under. Smarter Auto Mode Shedding spikes occur after grooming, during certain seasons, or when the pets move between rooms.  Look for an auto mode that uses built-in air quality sensors (such as PM2.5 or particle sensors) to detect real-time changes in the air.  An auto or smart mode feature uses real-time quality detection to adjust the fan speed based on what's actually in the air. For example, the AP10 Pet Air Purifier uses real-time air quality detection to respond to changes in your environment. If particle levels increase (such as after grooming or when your pet comes back into the room), it automatically increases airflow to capture more hair and dander, then returns to a quieter setting once the air has cleared.  [product handle="ap10-pet-air-purifier" rating="4.5"] Does Pet Hair Affect Air Purifier Performance? Hair can affect a pet air purifier’s performance in two ways. If it clogs the pre-filter, it reduces airflow and lowers how effectively the inner filtration layers can do their job.  In this case, you’ll need to clean the pre-filter by vacuuming or wiping the outer layer according to the manufacturer’s guidelines. Pet hair can also impact performance during periods of high-volume shedding because it spikes the particle load the unit is processing.  If you have a breed that sheds heavily or your household has multiple pets, check your pre-filter’s condition more frequently than the standard schedule suggests. Frequently Asked Questions What Is the Best Air Purifier That Collects Dog Hair? The best air purifier for dog hair combines a strong and multi-directional intake airflow, a pre-filter stage to capture it before it reaches the inner layers, and room coverage that matches your space. Since dog hair is larger and heavier than cat dander, it relies more on airflow design than filtration fineness. However, no air purifier will collect hair that has already settled. Where To Put an Air Purifier for Pet Hair? When placing an air purifier to capture pet hair, target the room where your pet spends most of its time and position it where airflow won't be blocked. This strategy works because airborne hair and dander concentrations are the highest wherever your pet actually is. If your pet moves freely throughout the home, consider getting additional units to address every area. What Are the Signs I Need an Air Purifier? If you notice visible floating pet hair that resettles quickly after you clean, persistent pet odor, or household members experiencing allergy symptoms, these are good signs you need an air purifier. They’re all symptoms of elevated airborne particle levels. An air purifier reduces airborne particles, but any serious health symptoms should be discussed with a medical professional. Ready to Upgrade Your Air Care Routine? Pet hair and dander are part of everyday life, but how much of it stays in the air is something you can control. With the right setup, you can reduce what’s floating around, keep your space feeling fresher, and cut down on how quickly hair and dust build up on surfaces. Air purifiers work best alongside regular cleaning and grooming, helping manage what’s airborne while you handle what’s already settled. If you’re exploring options, take a look at the AP10 Pet Air Purifier, designed to support pet homes with strong airflow, multi-layer filtration, and quiet, everyday operation. References: Allergic to Your Cat? Easy Tips to Prevent and Control Your Allergy (n.d.) Available at: https://vet.osu.edu/sites/default/files/documents/allergic%20to%20your%20cat.pdf Dander (n.d.) Available at: https://www.sciencedirect.com/topics/immunology-and-microbiology/dander Dong, X. et al. Occurrence of Emerging Contaminants in Pet Hair and Indoor Air: Integrative Health Risk Assessment Using Multiple ToxCast Endpoints (2022) Available at: https://www.sciencedirect.com/science/article/abs/pii/S0269749122017900 Effectiveness of a Portable Air Cleaner in Removing Aerosol Particles in Homes Close to Highways (2018) Available at: https://pmc.ncbi.nlm.nih.gov/articles/PMC6188808/ Pet Allergies (n.d.) Available at: https://www.allergyasthmasinus.com/conditions-and-treatment/pet-allergies/

If you've been running your air purifier frequently and have started to worry it might be costing you a lot of money, you can put those worries to bed. It costs much less than most people expect.  Most home air purifiers use somewhere between 5 and 100 watts, putting them in the same range as a light bulb. We've got a full breakdown of what it actually costs to run an air purifier and a couple easy ways to keep your purifier's energy use low. How Much Electricity Does an Air Purifier Use? The majority of typical home air purifiers draw between 5 and 100 watts (W) of power, but this depends on the purifier model and the running fan speed. A good chunk of the time, you won't run the purifier at max speed, and you'll likely have it set to auto mode or sleep mode (if available) overnight. Having it on these adaptive settings or on lower speeds will use less energy, so your usage will fall well below the upper end of that 5–100W range. Here are some examples based on the rated powers of our Dreame Air Purifiers: FP10 = 45W max. AP10 = 68W max. PM10 and PM20 = 33W in fan and cooling mode. Running at their highest fan speed continuously uses less than 1 kWh per day.  All of those are top-end figures. At lower speeds, the draw is noticeably less. You can compare this to a standard incandescent light bulb, which draws around 60 watts. Running a mid-range air purifier all day is roughly the same as leaving one of these bulbs on, or even sometimes less. How is Electricity Measured? Your utility provider charges you in kilowatt-hours (kWh), not watts. A watt is the rate of power use, and a kWh is how much energy is used over time.  This is how you can work out how much kWh something uses, according to the U.S. Department of Energy: Watts ÷ 1,000 × hours used = kWh As an example: if you run the Dreame FP10 Air Purifier at its 45W maximum for a full 24 hours, it uses 1.08 kWh (45 ÷ 1,000 × 24 = 1.08 kWh). That's almost the same as leaving a ceiling fan on all day. How Much Does It Cost to Run an Air Purifier? The rolling 12-month average residential electricity rate in the U.S. sits at around $0.17 per kWh. But rates can also range by state, such as from around $0.12/kWh in North Dakota and Louisiana to $0.43/kWh in Hawaii. This table shows you what 24/7 operation at maximum power works out as when using Dreame Air Purifiers, plus a higher-wattage comparison: Wattage Air Purifier Model Daily Cost Monthly Cost Annual Cost 33W Dreame PM10 & PM20 (fan mode, max) ~$0.13 ~$4.00 ~$49 45W Dreame FP10 (max.) ~$0.18 ~$5.50 ~$67 68W Dreame AP10 (max.) ~$0.28 ~$8.30 ~$101 100W Large unit at full speed ~$0.41 ~$12.25 ~$149 These figures are based on a rate of $0.17 per kWh at maximum W. When you're using auto or sleep mode, the purifiers will draw a lot less, so real-world monthly costs are typically lower than the numbers above in the table. How Air Purifier Energy Consumption Compares to Other Household Appliances When you're trying to understand the cost of running an air purifier, it's quite helpful to see how it compares to other devices running in your home.  According to the U.S. Department of Energy's appliance energy estimator, this is how much power some common household appliances use: Appliance Typical Wattage Air purifier (sleep/quiet mode) 5–20W Air purifier (mid-range, max speed) 45–100+W Laptop 25W Ceiling fan 35W Refrigerator 225W Microwave oven 1500W Clothes dryer 2790W You can see here that running an air purifier at max speed all day (45–100+W) uses much less power than a single dryer cycle (2790W). Further to that, compared to central AC (which the U.S. Energy Information Administration notes accounts for approximately 19% of average household electricity use), the difference is huge. What Affects Air Purifier Energy Usage? A few things determine how much power your purifier actually uses day-to-day, and getting an understanding of them will help you keep costs low without compromising on clean air.  Room Size and Unit Capacity A purifier that's made to cover a space of1,800 ft² (167 m²) needs a stronger motor than a purifier for a single bedroom. If you use an undersized purifier unit at max power to compensate for a too-large space, it's both less effective and less efficient.  You need to match the right purifier to your room size so that air quality and energy use are at their peak. Fan Speed Fan speed is a big factor here for energy use. A purifier drawing 60W at full speed might use only 15–20W on its quiet setting.  Multi-function features affect consumption, as well.  The AirPursue™ PM20 Purifier's heating function, for example, uses approximately 1.5 kWh per hour of active heating, versus its 33W fan-only operating power. If you use heating regularly, that's worth factoring into your running cost expectations. Continuous vs. Intermittent Use Many people will have the instinct to switch their purifier off when leaving the house, but did you know that running it continuously at a lower speed is often more efficient overall?  Short, high-power bursts use more energy than steady low-speed operation, and they give pollutants a chance to build up while the unit is off, which we want to avoid. Filter Condition A clogged filter is a bit like a blocked straw — the motor has to work harder to move the same volume of air through it. The motor's extra effort means a higher energy draw (and often with worse air quality to show for it).  Keeping on top of maintenance means more effective air filtration and also more efficient running. Smart and Auto Modes Purifiers with real-time air quality sensors respond to pollutants actually in the air and adjust accordingly, rather than running at a fixed speed regardless of conditions. Over a full day, that responsiveness can make a meaningful difference to how many kWh the unit consumes. It's much better than leaving the system on full power all day and night. Why Air Purifiers Are Designed to Run Continuously Indoor air doesn't stay clean for good once it's been filtered. Every day home activities like cooking, cleaning, playing with pets, and opening your windows introduce new particles.  Running a purifier continuously (even at a low setting) keeps indoor particle levels steadier throughout the day, rather than letting them build up and settle.  If you have young children, allergies, or pets in your home, having consistently clean air is worth more than the few cents you'd save by switching it off, as you're promoting the health of your home. The design of modern air purifiers reflects this by incorporating low-wattage motors, smart auto modes, and efficient airflow designs to support long, quiet, low-energy runs, so you can improve the quality of your home's air. 6 Tips to Reduce Air Purifier Electricity Costs Use auto mode. Let the purifier's sensors set the fan speed. It only works harder when it needs to, which keeps average energy use low without any effort from you. Match the unit to the room. An oversized unit wastes energy, and an undersized one compensates by running at max. Our guide on how to choose an air purifier for your home walks through the key things to look for. Stay on top of filter maintenance. A restricted filter makes the motor work harder, so make sure to change the filters as recommended by the manufacturer's guidelines. Lower the fan speed in cleaner spaces. Save the higher settings for kitchens, pet areas, or those moments when you've burned dinner, and the whole house knows about it. Use sleep or quiet mode at night. Most purifiers drop to their lowest fan speed in this mode while still filtering continuously. Cleaner air while you sleep, without the noise or the added cost. Avoid switching it off and on repeatedly. A purifier running quietly on a low setting all day uses less energy overall than one that's constantly restarted. Frequently Asked Questions How Much Does It Cost to Run an Air Purifier 24/7? At the U.S. average rate of around $0.17 per kWh, our PM10 and PM20 Purifiers at their 33W cost roughly $4 per month to run continuously. Rates vary across states, so it's worth checking your electricity bill for your exact rate. Do Air Purifiers Increase Your Electricity Bill Significantly? For most households, no. The monthly cost is usually between $2 and $9, but this depends on the model you have and how hard it runs. That cost is roughly comparable to leaving a few LED lights on around the house. Higher-wattage units at full speed cost a bit more, but even those remain modest compared to major home appliances, like washers. Should I Turn Off My Air Purifier at Night to Save Energy? No, keep it on in sleep or quiet mode. It uses minimal power, and turning it off means breathing unfiltered air for hours. If you’re worried about energy use, lower the fan speed instead of switching it off. Enjoy Cleaner Air Without Driving Up Energy Costs Air purifiers are among the most efficient appliances. At typical wattages, monthly costs are usually well below $10, and often even lower when using auto mode or lower fan settings. The reality is simple: cleaner air, less dust and pet dander, and fewer allergens, all for around about the cost of one cup of coffee each week. With the right unit and a few smart habits, the energy impact is minimal. Explore our full range of Dreame Air Purifiers to find the right fit for your home. References: U.S. Department of Energy — Estimating Appliance and Home Electronic Energy Use. https://www.energy.gov/energysaver/estimating-appliance-and-home-electronic-energy-use U.S. Energy Information Administration — Table 5.3: Average Price of Electricity to Ultimate Customers, Electric Power Monthly. https://www.eia.gov/electricity/monthly/epm_table_grapher.php?t=table_5_03 U.S. Energy Information Administration — 2024 Average Retail Price of Electricity by State (Table 4). https://www.eia.gov/electricity/sales_revenue_price/pdf/table_4.pdf Dreame Support — Is the Dreame Air Purifier energy efficient? How much electricity does it consume? https://support.dreametech.com/hc/en-us/articles/13200018967311-Is-the-Dreame-Air-Purifier-energy-efficient-How-much-electricity-does-it-consume U.S. Energy Information Administration — Electricity Use in Homes. https://www.eia.gov/energyexplained/use-of-energy/electricity-use-in-homes.php

You spend roughly a third of your life in the bedroom, and the quality of the air in this room shapes how well you sleep, breathe, and recover each night.  Choosing the right air purifier can transform your bedroom into a sanctuary of clean, refreshing air, helping you wake up feeling rested and rejuvenated. Here’s what to look for so you can notice a real difference in how your air feels once you have everything set up. What Is a Bedroom Air Purifier, and How Does It Work? Bedroom air purifiers are portable air cleaning devices that continuously refresh the air in your space by capturing airborne pollutants, like dust, allergens, and odors, through the night. Even if you think your home feels clean, the EPA has found that indoor air can contain pollutant levels 2–5 times higher than outdoor air. The bedroom can be one of the highest accumulation environments in your home. The purifier works by pulling in air, passing it through multiple filtration layers, and releasing cleaner air back into the room. Mechanical filter layers trap particles, while activated carbon layers neutralize gases and odors.  With the right purifier running overnight, your air stays more stable, so you sleep better and wake up feeling more rested, not stuffy or congested. To make sure your purifier can deliver these results, the next step is choosing one that’s correctly sized for your bedroom. Measure Your Bedroom Correctly The most common buying mistake is choosing a bedroom purifier based on your floor area alone.  But air volume, not just floor space, is what actually determines how hard the purifier has to work. Start by measuring your floor area, multiplying the length by the width.  Then calculate the volume by multiplying the floor area by the ceiling height to get a measurement in cubic feet or cubic meters.  This number determines how much air the purifier needs to filter.  For example, if your walls are 11ft long by 8ft wide, and if you have 8ft ceilings, then yours would be: 11ft x 8ft x 8ft = 704ft³ (19.9m³) Match CADR and Room Coverage to Your Space Choosing the right size air purifier for your bedroom is less about picking the most powerful model and more about finding one that suits your space. What really matters is how often the purifier can cycle the air in your room. The more frequently the air is refreshed, the less chance pollutants have to build up while you sleep. Clean Air Delivery Rate (CADR) is the spec that tells you how much filtered air, in cubic feet per minute, the unit can deliver at a given fan speed. The higher the CADR, the faster the air is cleaned.  As a general rule of thumb, choose a purifier with around 4–5 air changes per hour. That way, the air stays consistently fresh. Basic ventilation standards (ASHRAE’s Standard 62.2) suggest a very low level of air circulation (around 0.35 air changes per hour), which is enough for fresh air, but not enough to noticeably improve air quality. For bedrooms, higher air circulation helps keep the air feeling cleaner and more comfortable throughout the night.  You can use this table as a reference when matching room size and CADR: Room Size CADR ACH 8x8x8 = 512ft³ (14.5m³) 40.96 CFM (69.63m³/h) 4.8 9x9x9 = 729ft³ (20.6m³) 58.32 (99.14m³/h) 4.8 10x10x8 = 800ft³ (22.7m³) 64 CFM (108.8m³/h) 4.8 10x10x9 = 900ft³ (25.5m³) 72 CFM (122.4m³/h) 4.8 10x12x10 = 1200ft³ (34m³) 96 CFM (163.2m³/h) 4.8 10x14x10 = 1400ft³ (39.6m³) 112 CFM (190.4m³/h) 4.8 12x14x10 = 1680ft³ (47.6m³) 134.41 CFM (228.5m³/h) 4.8 Find your room's approximate volume in column 1, and look for a purifier that at least meets the target CADR in column 2.  If a purifier has a higher CADR than required, you can run it at the lower, quieter fan speed, and it’ll still hit that target. Choose the Right Filtration for a Bedroom To enjoy the benefits of cleaner air in your bedroom, you need a purifier with the right filtration system. This will depend partly on your goals, whether that’s reducing allergens, managing odors, or improving overall air quality. In general, it’s best to choose a system that includes the following key filtration components: Fine Particle Filtration High-efficiency filters are designed to capture small airborne particles like dust, pollen, dander, and mold spores. Many of these particles fall within the PM2.5 range, meaning they can stay suspended in the air and affect your comfort while you sleep. HEPA filters are designed using tightly packed, pleated materials (often fiberglass or similar fibers) that can capture at least 99.97% of particles around 0.3 microns in size. Most common allergens like dust, pollen, and pet dander fall within a broader range of roughly 1–20 microns, meaning they can be effectively captured by high-efficiency filtration systems. However, filtration performance isn’t only about how small a particle can be trapped. It also depends on how much air the system can move. Some modern air purifiers use alternative High-Efficiency Composite Filters that are designed to maintain strong airflow while still capturing fine particles. It allows more of the room’s air to be cleaned over time, rather than focusing only on filter density. When choosing a purifier, it’s best to look for a system that balances effective particle capture with consistent air circulation, so your air is refreshed regularly throughout the night. Activated Carbon Layer The activated carbon layer helps reduce odors, VOCs, and other airborne gases from sources like furnishings, cleaning products, and everyday household activities. These contaminants are absorbed into the carbon surface, helping keep your bedroom air fresher. Pre-Filter (Primary Filter) A pre-filter captures larger particles like dust, lint, and hair before they reach the main filtration layers. Such a filter helps prevent clogging and supports more consistent performance over time. Or Choose Multi-Layer Filtration Rather than relying on just one type of filtration, most modern systems combine these layers to handle both particles and odors at the same time. It’s also important to consider how the system balances filtration with airflow. If airflow is restricted, less air is cleaned overall, so a well-designed system should be able to maintain consistent circulation while still capturing fine particles. This is especially relevant for fine particles like PM2.5. Research has shown that higher indoor PM2.5 levels can be associated with reduced sleep efficiency, meaning cleaner air can contribute to a more comfortable sleep environment. Prioritize Low Noise for Sleep Comfort If there's one place you prioritize low noise and an air purifier, it’s the bedroom. Always check the noise level in sleep mode, not at maximum speed — that’s the setting you’ll actually use at night. The WHO says that the ideal noise level in the bedroom at night is below 30 dB(A) for good sleep quality.  Here are some simple reference points: Below 30dB(A): Near silent, WHO’s recommended level. Ambient room noise. 30-35 db(A): Very quiet and acceptable for most sleepers. 35-45 db(A): Noticeable. Acceptable for daytime use, but likely disruptive for overnight use. Above 45 db(A): Find for active rooms but not for overnight bedroom operation. Many purification devices operate normally in the 50–60dB range, or even higher when the fan is at its highest setting. They may clean the air effectively, but if it runs so loudly that it disturbs your sleep, you’re less likely to keep it running overnight.  One study even found that each additional decibel of indoor noise at night was associated with lower sleep efficiency, longer time to fall asleep, and more time awake after sleep onset. Optimize Placement and Airflow in Your Bedroom Where you place your air purifier affects how well it cleans the air around you. Use these guidelines to help get the best performance: Place it near a central area or a doorway. It allows the purifier to draw in stale air from the widest area and circulate clean air across the room. Keep it on the floor or a slightly elevated surface without obstruction. Avoid corners, as that limits the intake on two sides, or directly against walls, because it will restrict air flow on the intake side.  Avoid placements behind curtains or furniture. Angle the airflow output away from the bed so you don't feel a draft of air as you sleep. Keeping the bedroom door closed while it’s running so that the purifier can cycle through a fixed, smaller air volume for faster and more consistent air quality improvement. The better the placement, the faster the purifier will clean your air. Consider Smart Features and Maintenance Needs Smart features can make a noticeable difference in how easy your air purifier is to use day to day, especially when you’ll be using it in the bedroom. Sensors and Auto Mode Models with built-in air quality sensors can automatically adjust performance based on what’s in the air, increasing airflow when levels rise and easing back once things improve, so you don’t need to manually adjust settings overnight. Some purifiers, like the Dreame AirPursue PM20, monitor multiple factors, including fine particles (PM1, PM2.5, PM10), gases, temperature, and humidity to respond more precisely to changes in your environment. A clear display or LCD screen also helps you see what’s happening in real time, so you can better understand your air quality and spot patterns throughout the day. APP Connectivity If app control and scheduling are available, you can start the purifier before bedtime at a higher speed, then switch it to a quieter sleep mode automatically, so the room feels fresh as you settle in for the night. Optional Heating and Cooling Some modern systems also integrate optional heating or cooling modes, allowing you to have a comfortable sleep without relying completely on central heating or cooling systems.  Maintenance Maintenance is just as important for long-term performance. Pre-filters can usually be cleaned by vacuuming or rinsing, helping extend the life of the main filter Primary and carbon filters will need replacing over time to maintain performance A filter life indicator makes it easier to know when it’s time, without guesswork Keeping up with basic maintenance ensures your purifier continues to run smoothly and deliver consistent air quality over time. Avoid Common Mistakes When Choosing a Bedroom Air Purifier Sizing the unit based on floor area only. Leaving ceiling height out of the equation can lead to underestimating the total air volume. Using the highest CADR without checking the noise at a low speed. Noise and CADR are inversely related. A high CADR unit that runs loudly on its low setting isn't appropriate for the bedroom. Checking the max decibel rating instead of the sleep mode rating. Max fan speed isn't applicable for overnight use. Always check the decibels at the lowest setting. Placing the air purifier behind furniture or in a corner. While you might want it to be out of the way, physically obstructing the intake or output can reduce effectiveness and defeat the purpose of buying a correctly sized unit. Running the air purifier with your door open dramatically increases the air volume the purifier is working against, making it less efficient. Purchasing for maximum filtration without checking for filter design trade-offs. Denser filter media capture smaller particles, but if it increases resistance and reduces air flow, it might not be the right choice. Look for systems engineered to balance filtration efficiency against CADR. Ignoring the total filter lifespan. The Cumulate Clean Mass (CCM) rating measures the filter's total capacity to hold pollutants before efficiency drops. A lower rating means the filter will degrade quickly under continuous use, costing you more to replace the filters and maintain the unit. Check CCM levels alongside initial efficiency ratings. Which Air Purifier Is Best for a Bedroom? Modern bedroom air purifiers deliver better results than older models because they now integrate intelligent designs and smart features that allow smaller purifiers to work more efficiently. Look for the following features:  Factor What to Look For Why it Matters in the Bedroom Room coverage CADR matched to your room’s cubic volume at 4.8 ACH Ensures full air turnover without overworking the unit Filtration depth Multi-layer system: mechanical and activated carbon Addresses both particles and gases Filter media efficiency High-efficiency filtration designed to capture fine particles while maintaining airflow Captures fine particulate (PM2.5), the particle size most associated with disrupted sleep Noise level ≤30 dB(A) in sleep/comfort mode Won’t disrupt light sleepers Smart features Auto mode with air quality sensors Adjust outputs without waking up to change settings Airflow design Directional or 360º room-wide distribution Moves clean air through the whole room Maintenance Filter life indicator and accessible replacement filters Consistent long-term performance and no guesswork on when to replace CCM Rating F4 (highest classification) High total filter capacity for continuous use Once you understand these factors, choosing the right model becomes much clearer. For example, the Dreame AirPursue PM20 is designed to balance strong airflow with multi-layer filtration, so it can clean large volumes of air without having to run loudly at night. It can purify 1,883 sq. ft. (175 m²) in 15 minutes when running at full capacity. With a CADR of 400 m³/h, it gives you enough headroom to run it quietly and still exceed bedroom ACH targets. Simply put, that means you can run it at a lower, quieter setting while still maintaining consistent air circulation overnight. Plus, when in sleep mode, it runs at just 32 dB(A), so it won’t disturb your rest while continuing to filter airborne pollutants. [product handle="pm20-air-purifier" rating="4.5"] Frequently Asked Questions What Size Air Purifier Should I Get for My Bedroom? Match the purifiers CADR to your room's cubic volume to target at least 4.8 air changes per hour. Calculate the room volume with the formula: length x width x ceiling height. Choose a unit with a CADR above your minimum, so you can run it at a lower, quieter speed overnight and still hit your ACH target. Which Is Better, True HEPA or HEPA 13? HEPA 13 captures smaller particles than lower HEPA grades, but filtration isn’t just about particle size. Airflow matters just as much. If airflow is restricted, less air gets cleaned overall. The best results come from systems that balance strong particle capture with consistent air circulation. How Long Should You Run an Air Purifier in a Bedroom? You should run an air purifier in a bedroom continuously overnight in sleep mode. Air quality in a closed bedroom will fluctuate with occupant breathing, movement, and particles settling. While auto-mode can respond to these fluctuations in real time, running a purifier on a high speed setting will only work if it's quiet enough at that setting not to disturb your sleep. Ready to Choose the Right Bedroom Air Purifier? To feel confident you're making the right bedroom air purifier decision, these are the five things to do in this order: Start by measuring your room's volume, not just the floor area. Then match CADR to that volume at a target ACH. Next, check the filtration depth and filter media efficiency. Confirm the noise level in sleep mode. Finally, get the placement right. When these pieces come together, the result is more consistent air quality throughout the night, so your bedroom feels fresher and more comfortable every time you wake up. Browse our full range of air purifiers to find the right fit for your bedroom. References: Indoor Air Quality (2025). Available at: https://www.epa.gov/report-environment/indoor-air-quality How Much Ventilation Do I Need in My Home to Improve Indoor Air Quality? (2025). Available at: https://www.epa.gov/indoor-air-quality-iaq/how-much-ventilation-do-i-need-my-home-improve-indoor-air-quality Noise (n.d.). Available at: https://www.who.int/europe/news-room/fact-sheets/item/noise Associations of Bedroom PM2.5, CO2, Temperature, Humidity and Noise with Sleep (2023). Available at: https://pmc.ncbi.nlm.nih.gov/articles/PMC10293115/ Association Between Indoor Noise Level at Night and Sleep Quality (2023). Available at: https://pmc.ncbi.nlm.nih.gov/articles/PMC10174489/ Can Air Purification Improve Sleep Quality? A 2-Week Randomised-Controlled Crossover Pilot Study in Healthy Adults (2022). Available at: https://pubmed.ncbi.nlm.nih.gov/36351665/

Pet hair, lingering odors, and invisible dander are all part of life with pets, but they don't have to take over your air. After all, just over half of pet owners in America say their pets are as much a part of their family as a human member [1], so creating a cleaner, more comfortable home matters. Let's break down what actually matters when choosing a pet-friendly air purifier, and how to find the right one for your space. What Makes an Air Purifier “Good” for Pet Homes? A standard purifier might catch some dust, but pet homes need more specialized cleaning power. The system needs to handle visible hair, microscopic dander, and persistent odors, all at the same time. Key features of a good air purifier for pets include: Strong airflow: Pulls in floating hair before it settles Multi-layer filtration: Handles hair, fine particles, and odors together Fine particle capture: Targets dander that stays airborne Activated carbon filtration: Helps reduce pet odors Washable pre-filter: Makes maintenance easier in high-shedding homes Safety is another major factor. Good pet purifiers include features like stable bases that won’t tip over easily, bite-resistant power cords, and control locks to prevent curious paws from changing the settings. Types of Air Purifiers and Which Work Best for Pets When exploring the types of air purifiers available, you’ll notice several filtration methods. Here’s what pet owners should know: Single-layer filters often clog quickly with heavy shedding and are less equipped to separate various airborne particles produced by pets. Multi-layer filtration systems are most practical for pet homes, as they: Feature an outer pre-filter to catch large pet hair and debris, protecting inner components. Include a High-Efficiency Composite Filter that targets fine dander particles and microscopic allergens. Add a dedicated active carbon layer to absorb volatile organic compounds (VOCs) [2] and stubborn odors common in pet environments. Higher Clean Air Delivery Rate (CADR) and ACH (Air Changes per Hour) are essential for pet owners. A high CADR means the purifier cycles air rapidly enough to catch floating hair before it settles on furniture and surfaces. In pet homes, the goal isn’t only filtering air, but it’s also moving enough air through the system to keep particles from building up over time. Top Air Purifiers for Pets in 2026 Every pet household faces its own air quality hurdles, ranging from floating hair to stubborn pet odors that just won’t go away. The right purifier isn’t one-size-fits-all; it’s about finding a solution that matches your specific routines. We’ve matched each purifier in our lineup to everyday pet challenges so you can find a solution tailored to your real-life needs, whether your top concern is shedding, odors, or all of the above: Best for Capturing Floating Pet Hair: Dreame AP10 Pet Air Purifier If you’re constantly spotting fur drifting across the room, the Dreame AP10 Pet Air Purifier is built to catch it before it settles. Its 360° intake creates strong, consistent airflow that pulls in hair and dander from all directions, not just nearby. Top Features: 360° intake helps capture hair across the room Multi-layer filtration targets hair, dander, and odors together Achieves up to 99.9% removal of floating hair (when tested in lab conditions) Pet-friendly design with anti-tip base and quiet operation This is the go-to choice for homes where visible hair is the biggest frustration. Best for Low-Maintenance Homes: Dreame FP10 Air Purifier For heavy shedders, maintenance can quickly become part of the problem. The Dreame FP10 Purifier is designed to reduce that effort, with a self-cleaning system that helps prevent buildup and keeps airflow strong over time. Top Features: Self-cleaning intake helps reduce clogging from hair High-efficiency filtration for dander and dust Strong airflow for consistent circulation CataFresh™ Odor Control for professional-grade removal of stubborn pet smells Designed for long-term performance with less upkeep Ideal if you want cleaner air without constantly managing filters or buildup. Best for Smart, Automatic Air Cleaning: Dreame AirPursue™ PM10 In busy homes, air quality changes quickly. The Dreame AirPursue™ PM10 responds in real time, adjusting airflow automatically when it detects increases in particles from shedding, movement, or grooming. Top Features: 7 advanced sensors track air quality continuously Auto-adjusts performance based on real conditions Covers up to 1,412 sq. ft. in 15 minutes Even airflow distribution across the room Acts as a 2-in-1 purifier and cooling system A great fit if you want a purifier that adapts on its own and keeps your environment consistently fresh. Best for Whole-Home Air and Comfort: Dreame AirPursue™ PM20 The Dreame AirPursue™ PM20 goes beyond air purification, combining clean air with heating and cooling to create a more comfortable home environment year-round. Top Features: Covers up to 1,883 sq. ft. in 15 minutes 4-layer filtration captures dander, dust, and odors Up to 33% faster full-room purification (when tested in lab conditions) Quiet operation for continuous, everyday comfort Features 3-in-1 power for purification, cooling, and heating Best suited for larger homes or anyone looking for an all-in-one solution for air quality and comfort. How Smart Features Improve Pet Air Quality in 2026 Managing indoor air quality for pet homes isn’t what it used to be. Smart features now respond in real time to contaminants, creating a cleaner space without extra effort on your part. With today’s top purifiers, you get automatic adjustments and app-friendly controls, so your air stays fresher while you focus on what matters most at home. Real-Time Air Quality Response Advanced sensors recognize sudden increases in airborne hair and dander (like after a quick grooming session or playtime), then automatically boost filtration to clear the air. Once particles settle down, the purifier quietly returns to its normal mode, giving you cleaner air exactly when you need it, no manual adjustments required. Effortless Control from Your Phone App connectivity keeps your air care routine effortless. Monitor real-time air quality, adjust settings, and get filter alerts from your phone. You can tackle all those pet pollutants without missing a beat, no matter how busy your day or how unpredictable your furry friend. Consistent Air Quality, Without the Guesswork Modern purifiers take the guesswork out of managing your indoor environment. Smart features allow the machine to adapt to real-world conditions rather than just running on a single setting all day. How Air Purifiers Reduce Dust and Pet Allergens When you wonder how air purifiers reduce dust and pet allergens, it comes down to continuous circulation and specialized filter media. Pet dander is a common biological contaminant, according to the US EPA[3]. These inhalable particles are incredibly small, often ranging from 2.5 to 10 microns[4].  Because the particles are so light, they easily become airborne. A pet purifier addresses this by: Pulling in these airborne irritants Filtering them efficiently Circulating cleaner air back into the room Over time, this continuous cycling lowers the overall allergen load in your home, helping you breathe more comfortably. What Air Purifiers Can’t Do (And Why Expectations Matter) While air purifiers are invaluable for managing pet allergens, they’re designed to capture what’s floating in the air right now. But, they can’t: Remove hair already settled on floors or furniture Replace vacuuming or grooming Eliminate the source of shedding Combining a good purifier with routine vacuuming and brushing provides the most effective defense against pet allergens. How to Choose the Right Pet Air Purifier for Your Home To choose the best pet air purifier, start by understanding your space and your pet-related challenges. You can then use these pointers below: What To Look For What It Does High CADR & Airflow Design Ensures the machine has enough suction to pull in floating pet hair before it settles. Washable Pre-Filter Acts as the first line of defense, trapping large hair and dust. Being washable means you can easily clean it. High-Efficiency Composite Filter Traps microscopic pet dander and fine allergens (PM2.5) that trigger irritation. Activated Carbon Layer Absorbs VOCs and neutralizes strong household and pet waste odors. Proper Room Coverage Matches the purifier's capacity to your room size. Undersized units will not clean the air effectively. Pet Safety Features Bite-resistant cords, anti-tip bases, and control locks keep your pets safe and prevent them from accidentally changing settings. Low Noise Levels Look for sleep modes around 32 dB(A) so the machine can run continuously without stressing your pets or disturbing your sleep. Why Dreame’s Pet-Focused Purification Stands Out A pet home needs more than just filtration. It needs a smarter way to tackle fur, dander, and smells every day. Dreame’s approach focuses on balancing particle capture with strong air movement, so more air is cleaned more often. Balanced filtration and airflow: Extremely dense filter media can increase airflow resistance, meaning the fan has to work harder and louder to circulate air. Our composite approach is a deliberate design choice that balances excellent fine-particle filtration with powerful, efficient airflow — the machine actually moves enough air to capture heavy pet hair from across the room. Designed for real pet homes: We prioritize the reality of living with animals. Models like the AP10 include practical safety features like bite-proof cords and anti-tip designs. Built for everyday use: We combine reliable performance with durable filter designs to give families a convenient, long-lasting solution for everyday air quality. The result is cleaner air throughout the room and a system created for the demands of daily pet life. Frequently Asked Questions Do Air Purifiers for Pets Actually Work? Yes, they help reduce airborne pet hair, dander, and odors by continuously filtering the air. Over time, this lowers the overall particle levels in your home. For best results, combine them with regular cleaning. Where Is the Best Place to Put an Air Purifier With Pets? Place your purifier in the room where your pets spend the most time, such as the living room or your bedroom. Keep it away from walls and large furniture so the intake remains unobstructed. Elevating it slightly or placing it near the pet's bed can also help capture dander right at the source. Reduce Pet Hair, Odors, and Dander With the Right Air Purifier Managing a pet-friendly home shouldn’t mean putting up with airborne hair or odors that never quite go away. With a pet-focused purifier designed for real homes — powerful airflow, multi-stage filtration, and intelligent sensors — you can reduce allergens, tame smells, and make your space feel cleaner and more inviting for everyone, pets included. Dreame Air Purifiers are designed to handle real pet environments, combining strong airflow, multi-layer filtration, and smart features that adapt to your space. Ready to find the perfect fit for your home? Explore our full range of pet air purifiers and take the first step toward cleaner, healthier air today. References: Pew Research Centre: About half of U.S. pet owners say their pets are as much a part of their family as a human member. Available at: https://www.pewresearch.org/short-reads/2023/07/07/about-half-us-of-pet-owners-say-their-pets-are-as-much-a-part-of-their-family-as-a-human-member/ ResearchGate: Removal of VOCs and Improvement of Indoor Air Quality Using Activated Carbon Air Filter. Available at: https://www.researchgate.net/publication/332110684_Removal_of_VOCs_and_Improvement_of_Indoor_Air_Quality_Using_Activated_Carbon_Air_Filter US Environmental Protection Agency (EPA): Typical Indoor Air Pollutants. Available at: https://www.epa.gov/sites/default/files/2014-08/documents/refguide_appendix_e.pdf US Environmental Protection Agency (EPA): Particulate Matter (PM) Basics. Available at: https://www.epa.gov/pm-pollution/particulate-matter-pm-basics

Ever walked into your home and caught a musty whiff or spotted fuzz growing in a damp corner? That’s mold making itself at home. While an air purifier can’t magically wipe mold from your bathroom ceiling, it’s a powerful ally in the fight for fresher air. Air purifiers trap airborne mold spores before they settle, helping you breathe easier and your room feel cleaner. Let’s break down what mold is and what you can do to keep your air feeling fresh. What Mold Is and How It Spreads Indoors Mold is a type of fungus that thrives in warm, humid conditions. This is the kind of house guest no one wants. It sneaks in when you're not looking and quickly overstays its welcome.  Outdoors, it plays an important role by breaking down organic matter like leaves and wood. Indoors, however, it can affect air quality and create unwanted growth on surfaces. What Are Mold Spores? Mold spores are microscopic particles (1–30 microns) that stay suspended in the air and spread easily indoors.Spores can enter through open windows, HVAC systems, or by hitching a ride on shoes and pet paws. Once they land in a damp area, they can settle and begin to spread. They’re invisible, but you’ll notice their impact: more sneezing, stuffy noses, or irritated eyes, especially if you’re sensitive. The CDC backs this up, noting that exposure may lead to various health effects, possibly more severe for asthma and allergy sufferers [1]. With the right approach, though, you can limit its spread and keep your indoors feeling cleaner and more comfortable. Conditions That Allow Mold to Grow It doesn’t take much for mold to thrive, but they particularly love these conditions: Moisture: Leaky sinks, humid air, or window condensation. Organic material: Anything from wood and carpet to wallpaper. Temperature: Warmth helps, but if there’s enough moisture, it can even grow in cooler corners. Common Indoor Mold Types You might not know them by name, but these are the usual suspects turning up in households everywhere: Aspergillus: Often appears as green, yellow, white, or gray growth on damp surfaces. Penicillium: Typically blue or green, often found on water-damaged materials like wood, carpet, or fabric. Cladosporium: Commonly found on carpets, fabrics, and wood surfaces, even in cooler indoor environments. Stachybotrys chartarum: Often referred to as “black mold,” this species appears dark green or black and typically grows on consistently damp materials like drywall or wood. Mold Spores vs Mold Growth: Why This Distinction Matters It's easy to confuse those invisible, floating mold spores in the air with the stubborn growth you scrub off tile or walls. An air purifier acts as a first line of defense, capturing spores before they settle and spread. But once they have taken hold on surfaces, you’ll need to clean them directly and address the moisture causing it. Understanding this difference helps you set realistic expectations and use purification devices more effectively. So, Do Air Purifiers Help With Mold? Using an air purifier with a quality filter will help reduce the level of mold spores floating around your home. While they don’t replace moisture control, they play a key role in keeping the environment cleaner and more comfortable for everyone inside. Again, you'll need to tackle the source of the mold, so having proper ventilation, humidity control, and a regular cleaning routine is necessary to prevent mold growth. But by using a purifier continuously, you can significantly reduce the spores in your home and improve your overall indoor air quality. What They Can Do Capture spores, dust, and dander before they settle. Help prevent colonies from forming by constantly removing airborne spores. Help reduce musty odors with activated carbon filtration. (See how we help get rid of musty smells.) Improve comfort for allergy-prone family members and pets. What They Cannot Do Patch a leaky roof or fix a hidden pipe under the sink. Erase mold already growing on surfaces. Lower your humidity levels; purifiers move and filter air, not water. How HEPA Air Purifiers Capture Mold Spores Many purifiers are designed to capture fine airborne particles, including mold spores, which typically range from 1–30 microns in size. Traditional HEPA filters are commonly used for this, as they can trap very small particles through dense filter media. However, filtration performance isn’t just about how fine the filter is. It also depends on how well air moves through the system. If airflow is restricted, fewer air cycles occur, which can limit how much of your room’s air is actually cleaned over time. That’s why many modern air purifiers use multi-layer filtration systems or High-Efficiency Composite Filters, like those in most Dreame Air Purifiers. These are created to capture airborne particles while maintaining strong airflow and consistent circulation. More air passes through the purifier more frequently. And that helps to reduce the overall concentration of spores in your home, rather than just trapping them at the filter level. When Air Purifiers Actually Help With Mold If you want to get the most out of your purifier, use it in those moments that matter most: Post-cleanup: Scrubbing away surface mold? Run your purifier to catch any loose spores stirred up in the process. In stuffy spaces: Basement, bathroom, or the back room with no windows, constant airflow makes all the difference. On humid days: Muggy weather = higher spore count. Purifiers help cut it down. With pets: Furry friends are great at tracking outdoor spores inside. Keep your air and your floors cleaner. Why Moisture Control Matters More Than Filtration Alone Moisture is mold’s best friend. You can have the best air purifier, but if there’s a leak or constant dampness, mold will keep finding a way. The Environmental Protection Agency puts it simply: "The key to mold control is moisture control" [2]. Keep things dry, and you take away what mold needs most to thrive. Key Factors That Influence Mold Prevention Control humidity: Aim for 30–50% humidity, according to the EPA [3]. If you don’t have a hygrometer or dehumidifier, consider investing. Boost airflow: Run fans, pop open a window on nice days, and let your home “breathe out” stale air. Tackle repairs early: That slow drip under the sink? Handle it now rather than leaving it until next week. Mold moves quickly if fed. Modern Air Purification for Mold-Related Concerns In mold-prone homes, effective air purification comes down to a few key factors: strong airflow, continuous circulation, and filtration that can capture fine airborne spores without slowing the system down. A purifier needs to move enough air to catch spores before they settle. Consistent circulation also helps prevent stale air from lingering in corners, basements, or enclosed rooms. That’s where the Dreame AirPursue™ PM20 fits in. It uses a 4-layer High-Efficiency Composite Filter to capture a wide range of airborne pollutants, including mold spores, while maintaining strong airflow throughout your space. With Dualflow Modulation Tech, the PM20 delivers even, whole-room coverage, helping ensure spores don’t just get filtered near the unit, but up to 33 feet (10 meters) across the room. That means more consistent air cleaning, especially in larger spaces. The built-in sensors continuously monitor air quality and adjust performance in real time, so your air stays fresh without constant manual adjustments. And because it runs quietly at just 32 dB(A), you can keep it running day and night to maintain cleaner air without disruption. How to Use an Air Purifier in Mold-Prone Areas Air purifiers are most effective at addressing mold-related issues when used properly.  Place the purifier in areas with high humidity where the fungus is most likely to grow, such as bathrooms or the kitchen, or areas where it’s visible.  Keep the purifier running continuously to routinely replace air and improve air quality.  Maintain the purifier and replace filters as recommended by the manufacturer to ensure it continues functioning optimally. To get even more from your device, check out our practical air purifier usage tips. Signs Mold Growth Needs Professional Removal If you’re dealing with large patches (bigger than 10 sq. ft. or about 1 sq. m), stubborn musty smells, or spots that keep reappearing, it’s time to call in expert help.  Professional mold specialists bring advanced tools and know-how to safely remove the problem, so you get peace of mind and better air for your home. Frequently Asked Questions How Long Should You Run an Air Purifier for Mold? With mold, it pays to keep your purifier running nonstop. Dreame purifiers are designed to deliver cleaner air around the clock without running up your energy bill. What’s Better for Mold, an Air Purifier or a Dehumidifier? Both devices work best as a tag team, with each playing a vital role. A dehumidifier takes away moisture, cutting off mold at the source, while your purifier sweeps up airborne spores and dust, making it easier for your family to breathe freely. How Do You Get Rid of Mold in the Air? Run a top-quality purifier with a multi-layer composite filter to grab stubborn spores from your air, then open the windows on dry days. You’ll flush out stale, stuffy air and let your purifier handle the rest. Do Air Purifiers Help With Damp and Mold? Air purifiers are experts at clearing the air, capturing the spores that cause musty smells and irritation. But when it comes to fighting dampness itself, you’ll want a dehumidifier. Dehumidifiers extract excess moisture from the air and prevent mold growth, while purifiers capture airborne spores that can cause health issues. Combine these two appliances for ultimate control. How Do You Tell if There Are Mold Spores in the Air? Even if you can’t spot mold spores, your senses know when something’s off: a telltale musty smell, sneezing, or itchy eyes that ease up when you leave the room. Improve Your Indoor Air Quality With Dreame AirPursue™ PM20 Air purifiers can help reduce airborne mold spores, but they work best alongside moisture control and regular cleaning. By tackling both the source of mold and the air it spreads through, you can create a home that feels cleaner, fresher, and more comfortable day to day. The Dreame AirPursue™ PM20 is designed to support that process, combining strong airflow with multi-layer filtration to help capture airborne pollutants, including mold spores, across larger spaces. If you’re looking to improve your indoor air quality, explore how the PM20 can fit into your routine and help maintain a consistently fresher environment at home. References: Centers for Disease Control and Prevention (CDC): Mold. Available at: https://www.cdc.gov/mold-health/about/index.html Environmental Protection Agency (EPA): Mold. Available at: https://www.epa.gov/mold Environmental Protection Agency (EPA): Mold Course Chapter 9: Prevention. Available at: https://www.epa.gov/mold/mold-course-chapter-9