Living with mold isn't just unpleasant; it's an active hazard to your health. Of course, buying an air purifier for this sort of problem should be your last course of action. Your main priorities should be having the mold removed and dealing with the original source of moisture; for that, check out our recommendations for the best dehumidifiers and the best basement dehumidifiers. Once that's dealt with, you'll be glad to know that any remaining mold spores should be easy pickings for the majority of household air purifiers. Mold spores typically range from roughly 1 to 40 microns in size, which is well above the minimum size of what most air purifiers can deal with. HEPA-rated units are rated to lock in up to 99.97% of airborne particles as small as 0.3 microns, though you shouldn't even need that restrictive a filter for this use case.
We've tested more than 50 air purifiers, and below are our recommendations for the best air purifiers for mold based on our test results. Here are the most important things to look for:
- Clean Air Delivery Rate (CADR): Mold is generally found in basements, which tend to be larger and require a higher clean air delivery rate. Look for units with a CADR exceeding 320 m3/hr (188.3 CFM) as a general starting point. If you want an idea of how well-suited an air purifier is to your given space, take a look at our room sizing tool.
- Features: Air quality sensors and built-in Wi-Fi minimize the amount of necessary babysitting, which is helpful if you plan on running your air purifier while you're away from home.
- Footprint: Even in a bigger space where you might have had a mold issue, like a basement, an air purifier that doesn't take up unnecessary room is a benefit, as it gives you more flexibility in terms of where to place the unit.
If you're looking for other product recommendations, check out our picks for the best air purifiers, the best air purifiers for dust, and the best air purifiers for allergies. Of course, if you're consistently dealing with mold, you'll need to invest in more than a household air purifier and address the root cause. If the problem is humidity, you can check out our recommendations for the
We buy and independently test air purifiers with no manufacturer samples, sponsorships, or pre-approved talking points. Each unit goes through the same standardized test bench, and the results are validated by multiple teams before being published on our website, so you can accurately compare them side by side.
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Best Air Purifier For Mold For Most People
Particle Filtration Rate8.4Filtration Layers3 StageNoise @ Highest Fan Speed53.9dBANoise @ Lowest Fan Speed33.1dBASee all our test resultsRecommended Room Size @ Max Fan Speed42.7 m² (459 ft²)The best air purifier for mold for most people that we've tested is the Winix C909, as it offers a robust filtration system and a high enough clean air delivery rate to operate effectively within medium-sized basements, all without breaking the bank. It's capable of dealing with airborne pollutants like mold spores in areas exceeding 450 ft2 (41.8 m2). It's also relatively quiet at this speed, which is useful if you have a home theater or entertainment space in your basement, or wherever else you've had to deal with mold. This unit's filtration system consists of a pre-filter of larger dust, a main allergen filter for finer particles like mold spores, and an activated carbon sheet for odor reduction, along with Winix's PlasmaWave particle ionization system, which is advertised to neutralize airborne particles. Like most similar systems, it emits a small amount of ozone while in operation, though it's rated to fall within safe limits. If you or someone else in your household has an ozone sensitivity, you can disable the system, and doing so has little overall impact on performance
The C909 also features an air quality sensor that allows it to automatically adjust its fan speed in real time, though you can also operate it manually using the on-board controls or via the Winix Smart smartphone app. With all that being said, it's worth noting that the C909 is rather bulky, which can make it a bit of a challenge to fit in tighter spots.
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Best Air Purifier For Mold
Particle Filtration Rate8.6Filtration Layers5 StageNoise @ Highest Fan Speed63.2dBANoise @ Lowest Fan Speed32.3dBASee all our test resultsRecommended Room Size @ Max Fan Speed46.8 m² (504 ft²)If you've got the budget for it, the NuWave OxyPure is the best air purifier for mold that we've tested, especially if you need something powerful enough to handle larger spaces versus the less expensive Winix C909. Thanks to its high clean air delivery rate (CADR), it can clean the air efficiently in rooms exceeding 500 ft² (46.5 m²), helping reduce airborne mold spores more quickly and maintain better air quality over time. Its multi-stage filtration system is particularly well-suited for mold concerns, combining washable pre-filters, reusable Bio-Guard filters designed to trap mold spores, and a HEPA filter capable of capturing particles far smaller than the typical size of airborne mold. Most of the filtration system is washable and rated to last up to 20 years, with only the HEPA and activated carbon filter requiring yearly replacement, which helps keep long-term maintenance costs relatively low despite the high upfront price.
Another advantage of the OxyPure is that it maintains strong air-cleaning performance even at quieter fan speeds. This makes it easier to run continuously in bedrooms or living areas without the constant loud fan noise that often comes with high-capacity purifiers. At lower settings, it's still capable of handling airborne contaminants in most average-sized rooms, while its highest setting provides enough airflow to tackle larger, open-concept spaces more effectively. On top of that, the purifier includes plenty of convenience features, including Wi-Fi connectivity, app controls through the NuWave Connect companion app, and a built-in particle sensor that provides a real-time look at your home's air quality. That said, this is a genuinely large device, so you will want to consider less bulky options if you are short on space.
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Best Upper Mid-Range Air Purifier For Mold
Particle Filtration Rate9.1Filtration Layers4 StageNoise @ Highest Fan Speed58.2dBANoise @ Lowest Fan Speed31.2dBASee all our test resultsRecommended Room Size @ Max Fan Speed62.2 m² (670 ft²)For those who don't need the NuWave OxyPure's reusable filter system, the Blueair Blue Signature Large is an excellent alternative for tackling mold spores in larger spaces. Its exceptionally high clean air delivery rate allows it to remove airborne mold spores quickly, making it a great choice for damp basements, large living rooms, or other areas where mold is more likely to become an issue. It also maintains strong filtration performance at quieter fan speeds, so you can leave it running continuously without creating much background noise. Wi-Fi connectivity lets you monitor air quality and adjust settings remotely through the Blueair companion app, while its furniture-inspired design helps it blend into your home more naturally than a typical air purifier.
That said, unlike the NuWave, the Blueair relies on its HEPASilent ionization system to achieve its performance, and this feature can't be disabled. While the system is certified to produce ozone within accepted safety limits, it may still be a concern if you or your pets are particularly sensitive to ozone. It also has a fairly wide footprint despite its lower profile, so it isn't the easiest purifier to fit into tighter spaces. At its quietest setting, it's barely louder than a whisper, while its highest fan speed is about as loud as a normal conversation.
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Best Mid-Range Air Purifier For Mold
Particle Filtration Rate8.1Filtration Layers3 StageNoise @ Highest Fan Speed60.7dBANoise @ Lowest Fan Speed32.4dBASee all our test resultsRecommended Room Size @ Max Fan Speed37.5 m² (404 ft²)The Winix 5530 is worth a look if you want an air purifier that handles mold spores reliably without breaking the bank. It uses a similar filter system to the pricier and slightly more powerful Winix C909, with a three-stage mechanical filtration system and an additional PlasmaWave particle ionization system, which can be turned on or off as you please. This system is more than up to the task of handling relatively large airborne pollutants like mold. What you lose out on versus pricier models like the Blueair Blue Signature Large is performance: the 5530 is about 40% slower to clean the air in an equivalently sized space, though it's still capable of operating efficiently in areas over 400 ft2 (37.2 m2), which should be enough for the average-sized living room, or small open-concept dens. It runs somewhat noisily in this configuration, and while lowering its fan speed has a big impact on its performance, it's far quieter at these speeds, and still able to handle air-cleaning duties in most bedrooms or offices.
It's relatively feature packed too, with Wi-Fi connectivity for remote control through your smartphone, an air quality sensor that automatically adjusts fan speed based on current conditions, and a Sleep mode that dims the display and lowers the fan speed as the room darkens. Unlike the Blueair, it can't be used as an end table, though its slim, rectangular design still lets it sit flush against a baseboard without eating up much floor space.
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Best Budget Air Purifier For Mold
Particle Filtration Rate7.2Filtration Layers3 StageNoise @ Highest Fan Speed58.5dBANoise @ Lowest Fan Speed31.7dBASee all our test resultsRecommended Room Size @ Max Fan Speed23.7 m² (255 ft²)The best budget air purifier for dealing with mold that we've tested is the Dreo Air Purifier 539S. This compact unit is a great pick if you've only had to deal with a mold problem in a space like a moderately large bedroom or home office, and don't require the coverage of something like the Winix 5530; at its highest fan speed, the Dreo's max coverage is a hair over 250 ft2 (23.2 m2), nearly 40% less than the Winix. Still, the Dreo features a three-stage filtration system with a HEPA-rated primary filter, and it won't have any trouble dealing with mold spores within moderately-sized spaces as a result. Operating noise is exceptionally low at its slower fan speeds, and while performance in that configuration is nothing special, it's still enough for overnight use in a smaller bedroom.
This unit is pretty feature-rich for an affordable unit, with Wi-Fi connectivity through its smartphone app, so you can monitor air quality or change settings even when you're away from home. Beyond that, this unit's compact size and lightweight design make it feasible to set up on a larger nightstand or table, instead of taking up room on your floor.
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Best Cheap Air Purifier For Mold
Particle Filtration Rate6.0Filtration Layers3 StageNoise @ Highest Fan Speed54.7dBANoise @ Lowest Fan Speed33.6dBASee all our test resultsRecommended Room Size @ Max Fan Speed13.2 m² (142 ft²)If you want to spend as little as possible on an air purifier for dealing with mold, the Levoit Core 200S is worth a look. While its main filter technically isn't HEPA-certified, its real-world filtration performance is still sufficient to trap particles like mold spores effectively. Unfortunately, even the moderately larger Dreo Air Purifier 539S delivers greater overall air-cleaning power, but it still performs well in smaller spaces up to roughly 142 ft² (13.2 m²), making it a good fit for bedrooms, dorm rooms, home offices, or smaller apartments. It simply lacks the airflow needed to clean the air efficiently in larger living rooms or open-concept spaces.
A big upside is that this model is fairly unobtrusive noise-wise. Even at its highest fan speed, it only reaches around 54.7 dBA, roughly comparable to the sound of a household refrigerator running nearby. Its low-noise air-cleaning performance is fairly limited, however, so at quieter fan settings it struggles to clean the air effectively outside of very small rooms, and you'll need to run it at higher fan speeds to get the best performance. Unfortunately, unlike the Dreo, it lacks a built-in particle sensor that would allow it to automatically adjust fan speed on its own, which can be inconvenient if your home's air quality changes overnight. That said, it does have on=board Wi-Fi for remote operation through its companion app.
Notable Mentions
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Honeywell HPA300:
The Honeywell HPA300 is a full-sized household air purifier with HEPA filtration. It has a higher clean air delivery rate than the Winix 5530, but it's much louder and lacks a built-in particle sensor.
See our review -
Corsi-Rosenthal Box:
A Corsi-Rosenthal Box is a homemade air purifier built from four 3M Filtrete air filters and a box fan; we assembled ours using this guide. It delivers stronger air filtration than the NuWave OxyPure, but it's also significantly louder and much bulkier.
See our review -
Levoit Vital 200S:
The Levoit Vital 200S is a good alternative to the Winix 5530. That said, its max CADR is slightly lower, making it less suited to larger areas.
See our review -
Coway Airmega 400:
The Coway Airmega 400 is a good alternative to the NuWave OxyPure. It delivers a higher CADR while remaining quiet enough for everyday use. Like the NuWave, it's a fairly bulky unit, making it best suited to larger spaces where its size is less noticeable.
See our review -
Levoit Core 600S:
The Levoit Core 600S is a great alternative to the Blueair Blue Signature Large if you prefer a purifier without an ionizer. It offers strong mold filtration performance, Wi-Fi connectivity, and excellent coverage for large rooms.
See our review
Recent Updates
Aug 20, 2026:
We've added the Winix C909 as the 'Best Air Purifier For Mold For Most People' pick, replaced the Coway Airmega 200M with the Winix 5530 as the 'Best Mid-Range Air Purifier For Mold' pick due to its superior performance, added the Dreo Air Purifier 539S as the 'Best Budget Air Purifier For Mold', and recategorized the Levoit Vital 200S as the 'Best Cheap Air Purifier For Mold' pick.
Jun 30, 2026:
We replaced the Levoit Core 600S with the higher-performing Blueair Blue Signature Large, and added the Coway Airmega 400 as a Notable Mention for users seeking another alternative for large spaces.
May 14, 2026:
We updated the text and added information around low-noise particle filtration to reflect our Test Bench 1.2 update. We also verified that our recommendations are in stock and represent the best choices.
Apr 16, 2026:
We made minor in-text adjustments to further clarify product details. We also removed the Coway Airmega AP-1512HH Mighty from the Notable Mentions due to current availability.
Feb 27, 2026:
We added the Levoit Core 600S to the article as a new 'Best Upper Mid-Range Air Purifier For Mold' category pick. We replaced the Levoit Vital 200S with the Coway Airmega 200M as the 'Best Mid-Range Air Purifier For Mold' pick due to new performance data findings from version 1.1 of our air purifier testing methodology. We recategorized the Levoit Core 200S as the 'Best Budget Air Purifier For Mold' pick. We added the Levoit Vital 200S to the Notable Mentions.
What To Consider When Buying An Air Purifier For Mold
Clean Air Delivery Rate (CADR) And Coverage
Generally speaking, when considering an air purifier, it's best to measure the size of your own space, so you don't end up with too little performance for your needs. If you're looking at our reviews to help make that choice, pay close attention to the 'Particle Filtration Rate' test, particularly the 'Recommended Room Size @ Max Fan Speed' field. We've outlined a few examples of different room sizes below, and what sort of CADR you should be aiming for when considering an air purifier.
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180 - 220 ft2: Very large primary bedrooms, or smaller living rooms.
- Suitable CADR: 115.2 - 140.8 CFM (195.7 - 239.2 m3/hr)
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250 - 350 ft2: Medium-sized living or dining room.
- Suitable CADR: 160.0 - 224.0 CFM (271.8 - 380.6 m3/hr)
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375 - 450 ft2: Large living rooms, or open-concept combined living and dining areas
- Suitable CADR: 240.0 - 288.0 CFM (407.8 - 489.3 m3/hr)
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500 - 650 ft2: Small partial dens.
- Suitable CADR: 320.0 - 416.0 CFM (543.7 - 706.8 m3/hr)
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700 - 950 ft2: Smaller open-concept basements.
- Suitable CADR: 448.0 - 608.0 CFM (761.2 - 1033.0 m3/hr)
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1000 ft2 or more: Medium-sized basements.
- Suitable CADR: 640 CFM (1087.4 m3/hr) or higher
While mold spores are generally easier to trap than many other airborne particles, they're also heavier, and require a greater amount of airflow to actually move. In real world terms, and all other things being equal, it's best to go for an air purifier with the highest CADR that fits within your budget. It's also worth noting that at the upper end of the square footage range, you're likely better off buying several cheaper units with a lower CADR, instead of investing heavily in a single high-end unit with a relatively high CADR, as the combined capacity of two units will typically outstrip that of a single unit.
Features
There are a few features that are especially nice to have if you're shopping for an air purifier, regardless of where and how you plan to use it:
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Air Quality Sensor Auto Mode
- This allows the air purifier to automatically adjust its fan speed setting in real time, without forcing you to fiddle with its onboard controls or a remote control, which is handy if you plan on setting up your air purifier in a basement, or simply a room that has had a mold area in the past, and you don't feel like checking on it periodically.
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Remote Control/App
- An included remote control or a smartphone companion app also allows you to operate the unit without having to walk over to it.
All Reviews
Our recommendations above are some of the best air purifiers for mold for most people. We factor in the price, feedback from our visitors, and availability.
That said, there's no single best option that will suit everybody; your needs will depend on your budget, the size of your living space, your tolerance for operating noise, and whether you like having a device with convenience features like Wi-Fi connectivity. If you'd like to choose for yourself, here's the list of all our air purifier reviews.