Top 5 Hot Selling Air Purifiers for Mold and Mildew in 2021

Running an air purifier at home can be a good idea anytime, to help filter out indoor allergens and pollutants like fumes from cooking and cleaning products. And that’s especially true now, when so many people are stuck indoors 24/7 because of the coronavirus pandemic.

What to Consider When Choosing the Best Air Purifier for Mold

An air purifier for mold should have a HEPA filter to safely and effectively filter spores and pollutants. When choosing an air purifier, consider the unit’s effectiveness, coverage rating, and energy efficiency. For air filters used in common living spaces, noise level and design are two more features to consider.

Our Top Picks

A great air purifier for mold uses effective and safe HEPA filtration to trap airborne mold spores. Look for a unit with a CADR to suit the room size where the purifier will be used. Since an air purifier should run constantly to be most effective, energy-efficient operation is also important. And since it’s often on display in the living spaces of the home, an air purifier should have a stylish, functional design.

  1. Acekool Air Purifier D01 

The Acekool air purifier D01 helps monitor the air in your surroundings in real-time with multiple sensors. Moreover, the innovative fan blade design contributes to advanced noise reduction to operate quietly while you sleep. With a small size and a modern design, this air purifier is perfect for small areas and bedrooms.

Fitted with a pre-filter, true HEPA filter, and carbon filter, this air purifier can eliminate 99.97% of PM2.5, formaldehyde, bacteria, pollen, smoke, mold spores, dust, odors, and pet dander. There is a built-in LED indicator that will remind you to with a fresh one. Filters must be replaced every 6 months depending on the use and air quality in your home.

        Pros         Cons
 Temperature and humidity meter
Refreshes humidity and temperature every 10 seconds
Sensitive touch switch
None (as  per our personal experience)

2. Acekool Air Purifier D02 

The Acekool Air Purifier D02 is perfect for a bedroom, living room, or office space. It is fitted with a thermometer and a hygrometer to monitor the temperature and humidity of the area in which the purifier is placed. It houses an H13 HEPA Filter that can maintain and boost the quality of the air around you.

The D02 air purifier indicates the air quality of your home using three different lights; green is for good air quality, yellow is for decent, and red denotes bad air quality. You can also adjust the fan speed depending on the air quality. You can set the fan speeds to low, medium, and high according to your preference.

The D02 features a 3-stage filtration system. The H13 HEPA filter is coupled with a pre-filter and carbon filter to obtain maximum purification of particles even as small as 0.3 microns of pollen, smoke, odors, and mold.

        Pros         Cons
Smart sensor
Temperature and humidity control
Sleep mode for  silent air purification
None (as  per our personal experience)


The GermGuardian AC4825 doesn’t feature any additional filters, but with the only 3-stage air cleaning system, this air purifier has enough power to deal with your everyday mold and viruses problem. For a compact air purifier, it can clean an area of 170 square feet for you.

But the main reason you might be interested in this air purifier is because of its low price tag. For under $100, the GermGuardian AC4825 is also the most popular air purifier for mold and mildew, with more than 9200 reviews on Amazon (rated 4/5). This was also our everyday beater for air purifier, and we can say that it worked great for the price.

Of course, the limit of this GermGuardian AC4825 is its low performance for large rooms, as well as the annual expense of filter replacement, because you can only use the air filter for a maximum of 8 months. Still, you can’t find an air purifier with the same performance and great UV-C light filter like the GermGuardian AC4825 under $100, so don’t hesitate to buy this most popular budget air purifier.

        Pros         Cons
Great performance for the price
Decent air filtration system
Affordable price tag
Energy Star rating
Quite noisy at highest setting
Lacks of Smart feature


This air purifier features a Smart Sensor, to help automatically adjust the air flow to ensure the highest quality air. The feature is only available in high-end air purifiers, and it gives more value to our SilverOnyx. That’s why SilverOnyx is featured as the Amazon’s Choice for several years.

Of course, there will be downsides for a budget air purifier with too many impressive key features. First, the SilverOnyx’s ionizer only releases 3 million ions/cm³, while the top ones’ ionizer can produce up to 10 million, and as a result it will limit the performance of this air purifier. Second, its CADR rating is only 83 cfm, which is quite insufficient for the large room coverage of 500 square feet. You need a lot of time for this air purifier to complete the task of cleaning a 500-sq-ft room for sure.

        Pros         Cons
Amazing performance rating to kill mold spores
Powerful air filtration process
Smart features like Smart Sensor
Has quiet operation
Very low CADR for large room coverage
Weak ionizer

5. Coway AP-1512HH

The Coway AP-1512 HH Mighty is one of the best air purifiers in the market. It is a reasonably priced machine that can cover an area of 361 square feet. Also, it sports a low-profile design with a bunch of features.

The Coway Mighty Air Purifier highlights four levels of filtration. It houses a pre-filter that captures the largest particles, an activated carbon filter that eliminates smoke, gases, odors, and other air pollutants. Besides, it also has HEPA filters that trap up to 99.97% of tiny particles. It also has an ionizing function to increase the air purifier’s ability to freshen the air.

Moreover, there is a timer feature that lets you run the machine according to a preferred time. You can also adjust the speed of the fan based depending on the air quality in your room.

Another noteworthy feature is the filter replacement indicator that checks both pre-filter and the HEPA filter to let you know when to wash or replace the filter.

        Pros         Cons
Low-profile design
The filters have plastic covers that must be removed before starting the machine


Killing mold with your air purifier is a good prevention. To increase the efficiency of preventing mold and mildew, you can count on these actions below.

Fix leaks: A leaky roof or plumbing system can increase the moisture in your home and create the perfect environment for mold. Repair such leaks and dry out any wet areas immediately.

Clean up after floods: Don’t just leave your flooded basement be, because it is a huge source of increasing moisture for mold growth. Making a post-flood cleanup is necessary in order to keep your basement dry.

Check your air ventilation: Kitchen and bathroom are the most proper places for mold growth. Make sure your air ventilation work its best to vent moisture outside the house.

And last but not least, you need to pick up your best air purifier for mold in 2021. Thank you for reading!

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