Best Air Purifiers For Basement

Basement air is usually the worst in a house; it can be full of mold, radon, stagnant air, and VOCs. Because of that, it is recommended to buy an air purifier for the basement, which can combat all the mentioned basement problems.

It is also crucial to keep the basement clean, especially if you have rooms in a basement that are regularly used every day. The air in such rooms needs to be filtered, or mold can grow, and people may get respiratory problems.

Best Air Purifier For Basement

In this article, I will talk about how to fix musty air in the basement, but also I will list the best air purifiers for the basement that can help you with bad air.

Here is the thing, the air in the basement is terrible, and you need a proper air purifier for it. Read this article to educate yourself and pick the best air purifier for your needs.

Short on Time? Here Is an Overview of The Best Air Purifiers For Basement.

  • Alen BreatheSmart Flex – A device for people who want an air purifier with fantastic performance that is also very reliable. In addition to having a lifetime warranty, it has many features. I can say with certainty that it is the unequivocal choice of air purifier for the basement.
  • Winix 5500-2 – Excellent performance, long-lasting filters, washable carbon filter, and the best value for money air purifier on the list. A multitude of advanced options is just a few of the extras that justify this recommendation.
  • IQAir Healthpro Plus – Top-quality Swiss air purifier with years of innovation and many satisfied customers. It is ideal for larger and highly polluted basements.
  • Rabbit Air MinusA2 – Stands out the most with its 6-stage filtration. Such filtration is sometimes essential to purify the foundation air, especially in rooms with stagnant air, such as a basement.
  • Coway Airmega 300 – An air purifier with a great CADR, I also recommend buying it if your basement is 1000 sq. ft. or larger. It uses the Coway Airmega Max2 filter, a combination of carbon and HEPA filters, and will get rid of bad air in your basement very quickly.

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Top 5 Basement Air Purifiers

After months of research and comparing the results of different air purifiers, I have concluded and compiled a list of the best air purifiers for the basement accordingly.

I have narrowed down the selection and tailored it to almost every user. Whether you are looking for the best air purifier for a basement bedroom or just an air purifier to remove the smell of ice from your basement, you are sure to find the one that suits you best.

Alen BreatheSmart Flex

The Alen BreatheSmart Flex is a newer model made by the Allen company. Reliable, long-lasting, and highly effective, the Flex is a definite choice and my top recommendation for purchase.

Subscribing to replacement filters and registering products on the Allen website, you are eligible for a lifetime warranty.

Best Choice
Alen BreatheSmart Flex Air Purifier - Review
Filters Pre-filter, True HEPA Filter, and Carbon Filter
Coverage 700 sq. ft.
Power Consumption 50W
Warranty Lifetime (with replacing filter subscription)

It is designed for rooms up to 700 sq. ft. It will fit perfectly in a slightly larger basement. The quality of the filter is of the highest level, so the True HEPA filter fights all the harmful particles found in the air of your basement and is sure to clean it.

Alen BreatheSmart Flex Highlights

  • The Alen BreatheSmart Flex uses a medical-grade H13 HEPA filter to remove 99.99% of airborne particles down to 0.1 microns in size.
  • It uses 3-stage filtration and is designed for rooms up to 700 sq. ft.
  • A lifetime warranty can be activated.
  • Superior air purifier, excellent performance, and superior craftsmanship.

Winix 5500-2

The Winix 5500-2 is the cheapest product on this list, but it does not differ much from the other models in terms of performance, features, and quality.

Suppose you have shallow pockets and are looking for a reliable air purifier. In that case, the Winix 5500-2 is an absolute recommendation, and better alternatives are hard to find.

Runner Up
Winix 5500-2 Air Purifier
Filters Washable Pre-filter, Washable AOC Carbon Filter, and True HEPA Filter
Coverage 360 sq. ft.
Power Consumption 70W
Warranty 2-year

It will cope well with gases, uses a True HEPA filter and a washable AOC carbon filter, which is also great information because this filter will get dirty very quickly in the basement. Filters are long-lasting, so you will need to change them every 12 months on average.

It is ideal for smaller cellars up to 360 sq. ft. but I guarantee that it will behave well in larger rooms. Primarily since the Winix 5500-2 has performed fantastically in all the tests I’ve done.

Winix 5500-2 Highlights

  • The Winix 5500-2 is designed for spaces up to 360 sq. ft.
  • It uses 3-in-1 filtration combined with PlasmaWave technology, which is essentially the fourth stage.
  • It includes an air quality sensor and remote control.
  • It uses a washable AOC carbon filter made of carbon pellets.
  • The Winix 5500-2 comes with a 2-year warranty.

IQAir Healthpro Plus

The slightly higher price may be a potential problem with this device. However, if this is not a barrier for you, the IQAir Healthpro Plus with Alen Breathesmart Flex is the best choice to buy.

Also Great
IQAir HealthPro Plus Air Purifier - Review
Filters PreMax Filter and HyperHEPA Filter
Coverage 1125 sq. ft.
Power Consumption 215W
Warranty 10-year

It is designed for rooms up to 1125 sq. ft. and if your basement is of similar dimensions, the IQAir Healthpro Plus is the ideal air purifier for you. IQAir is known for its proprietary, innovative filtration technology (HyperHEPA) that filters particles 100x smaller than 0.3 microns, much smaller than a virus.

My complaint about the IQAir is that it uses a lot of electricity, so at maximum speed, it will use about 215W.

IQAir Healthpro Plus Highlights

  • IQAir Healthpro Plus uses innovative HyperHEPA technology.
  • It is designed for rooms up to 1125 sq. ft.
  • It uses an advanced motor with a CADR of up to 300 CFM.
  • It’s perfect for larger, highly polluted basements.
  • It helps you almost completely neutralize odors and purify the air in your basement.

Rabbit Air MinusA2

The Rabbit Air MinusA2 is definitely the most impressive air purifier on this list. It uses the famous six-stage filtration that fights many airborne pollutants without a problem.

Ideal for the basement, it will remove odor and mold from the air at high speed. Rabbit Air has the option of combining different designs on the front so you can fit them into unusual rooms or environments.

Also Great
Rabbit Air MinusA2 Air Purifier
Filters Pre-filter, Medium Filter, BioGS HEPA Filter, Customized Filter, Activated Carbon Filter and Negative Ion Generator
Coverage 815 sq. ft.
Power Consumption 61W
Warranty 5-year

So my recommendation is to buy the Rabbit Air if you not only want fresh, clean air in your basement but also a device to fit into your unusually designed room.

Many advanced options, excellent performance, and advanced filtration are what you expect from an air purifier in this price range.

Rabbit Air MinusA2 Highlights

  • Rabbit Air offers a tempting 5-year warranty on this product.
  • It is designed for rooms up to 815 sq. ft.
  • It uses an ionizer as its filtration rate, so it’s a good idea to take this into consideration before you buy.
  • Unusual design, which is somehow authentic and stylish.

Coway Airmega 300

Coway is last on the list but not the worst choice. The Coway Airmega 300 is the air purifier with the highest CADR on this list. It is designed for spaces up to 1256 sq. ft. so it is an excellent choice for a large basement.

Also Great
Coway Airmega 300  Air Purifier
Filters Pre-filter and MAX2 Filter (Green True HEPA Filter and Activated Carbon Filter)
Coverage 1256 sq. ft.
Power Consumption 56W
Warranty 5-year

Because of its charming aesthetics, the Coway Airmega 300 would fit very well in a stylized basement, so it would be an excellent choice for a basement bedroom.

The Airmega 300 is Energy Star certified at just 56W, making it an incredibly low power consumption device compared to the outstanding performance.

Coway Airmega 300 Highlights

  • The Coway Airmega 300 is designed for rooms up to 1256 sq. ft.
  • Uses the Coway Airmega Max2 filter.
  • It has 5 different operating modes: Smart, Sleep, Low, Medium, and High.
  • Many advanced options, Auto Mode and Smart Sensors, are just some of the extras that the AirMega 300 uses.

Do you have a moldy odor you want to get rid of in your basement?

You’ve probably found a strong, stale, and unbearable smell in your basement entrance countless times. This air condition in the basement is most often a lack of fresh air or the appearance of mold.

The first piece of advice I would give you if you encounter this problem, which you have probably tried to solve many times, is to see if it is possible to ventilate the cellar or install a ventilation system.

Since it is not always possible to ventilate or install a ventilation system in the basement, I have compiled a list of the best air purifiers that will help you neutralize odors and eliminate problematic air quality in the basement.

Using an air purifier like the Alen BreatheSmart Flex will not only neutralize odors in your basement but will also improve the overall air quality and allow you to live in your basement smoother, longer, and without any unpleasant issues.

Why does mold grow in basements?

Mold simply loves dark, damp areas. It is the best place for mold to grow. The basement is such a place that provides the perfect environment for mold to grow.

Sometimes you need to remove the cause and only then buy an air purifier. Air in the basement can be so bad that even the best air purifier won’t help you. The problem is mold; if mold has taken over a basement, I am afraid you will first need to clean mold. After a whole basement is inspected and cleaned, buy an air purifier for the basement.

Are air purifiers perfect for the basement?

Stale and not-so-good air in the basement is a bigger problem than it seems, so it may be that one solution is not always enough. I can confirm that air purifiers definitely work. They are an excellent choice to combat bad and hampered air in the basement.

I have carried out tests in several different basement rooms, different uses, and different levels of air pollution. For example, in the basement, during winter preparation, I switched on an air purifier that quickly removed the strong smell of vegetables and neutralized the air completely.

Another basement, which is not fully finished (unfinished basement), is used as a gym room and has a fragrant smell. I also installed an air purifier and achieved a fantastic result. I would not comment much here; I will just say that breathing was several times easier and that such an unfinished basement has found its purpose, after all, thanks to the air purifier.

Air Purifier Technology Used in Basements

HEPA Filters

HEPA filters, especially True HEPA filters, are capable of removing 99.97% of air pollution. It can remove almost all particles down to 0.3 microns. The True HEPA filter is an ideal choice to trap mold spores and, in such a way, prevent mold growth.

HEPA filters need to be replaced regularly for best performance. HEPA filters cannot remove gases, bad smells, and terrible odors; for that, you will need to use a combination with a carbon filter or an ionizer.

Carbon Filters

Carbon filters are essential for basement air filtration. Carbon filters are an ideal choice to remove bad smells and odors. VOCs, gases, and other harmful components can be removed with these filters.

Suppose you have a basement with a lousy odor. In that case, I can highly recommend picking an excellent large air purifier with an enormous carbon filter.


Ionizers are also an exciting choice to combat bad smells and terrible odors. They release negative ions to the air, eliminating components that create lousy air in the basement. Ionizers are fast at removing bad odors and will for sure help you keep the air fresh in a basement.

However, you need to know that some ionizers are releasing small amounts of ozone which is not a problem if an air purifier is certified.

Unfortunately, there are air purifiers on the market that use ionizers but are not certified, and you can not know how much ozone is released in the air. I can only suggest being careful with such uncertified air purifiers.

UV-C Light

Many air purifiers today combine this option in the filtration system. UV light can kill germs and mold. Since it kills mold, it is a pretty good choice to combat mold in a basement. In combination with an ionizer or True HEPA filter, mold will be gone in no time.

Top Benefits of Using a Basement Air Purifier

If you are still not sure whether you need an air purifier and if you have asked yourself many times, “why should I use an air purifier for my basement?” then you are in the right place.

Everyone is probably wondering what benefits you can get if you buy an air purifier for the basement. All I can say is many. You can remove unpleasant odors, or you can clean the air from toxic components such as:


Radon is highly toxic, and it is highly recommended not to breathe air full of radon. This is a radioactive gas that comes to your basement from the soil.  

Breathing radon may lead to lung cancer.


I have already mentioned mold several times in this article, but every basement has more or less mold. Mold is not really that dangerous, but it creates bad air, and some people may have allergic reactions to mold.


VOCs are dangerous, and if you have these gases in your basement, you need to quickly remove them. VOCs can be put in the same category as radon. Because of no ventilation in most basements, VOC levels can be very high and, in that way, very unhealthy.


Dust is a problem in the whole house. Maybe the basement dust is not visible in the air, but I can assure you it is present. The good news is that air purifiers are best at removing dust from the air.

Musty Air

Musty air is just a symptom of the previously mentioned problems, which an air purifier can remove without a problem. If you remove dust, VOCs, radon, and mold from the air, the air will no longer be musty. 

Having previously described the isolated situations where an air purifier has helped, that’s not all; people use a basement for different purposes, so different situations have different benefits when using an air purifier.

Best Air Purifiers For Bedroom Best Air Purifiers For Allergies Best Air Purifiers With Washable Filters Related buying guides

Tips On Using an Air Purifier in a Basement

Air purifiers can fix almost all air-related problems. They are simple to use and are very effective against bacteria, viruses, VOCs, mold spores, dust, and other airborne pollutants.

But before using an air purifier, it is recommended to do some things to get your basement in order. As I previously said, you can install ventilation which can help with airflow and remove bad odor. 

All basements have moisture issues, and for that, it is recommended to use dehumidifiers that can keep humidity levels at optimal range. If there is high humidity, mold can grow, and you will probably have mold problems. 

Existing mold needs to be removed; you can clean it yourself or hire a mold expert. If you are not sure about mold type, hire a mold expert because some mold types are hazardous if you inhale their spores.

Radon is problematic to remove, but it is also rarely an issue in a basement. To start, it is best to monitor radon levels with the test kit. In case radon levels are high, it is highly recommended to hire an expert.

Choosing the right size air purifier

The Alen BreatheFlex is my absolute recommendation and the best choice for shopping. It is designed for spaces up to 700 sq. ft. It will also suit larger basement spaces. In addition to this model, I have added some other models to the list, designed for different sized basements, to help all potential customers to choose the suitable device for their needs as quickly as possible.

Do you need an air purifier or dehumidifier for your basement?

Combining an air purifier and a dehumidifier is not always the best option because it is challenging to make a perfect product for both purposes. I have tested some devices that are a combination of an air purifier and a dehumidifier (which you can find in on the Air Purifier First website) and didn’t get great results. It is better to use these two types of devices separately.

A dehumidifier alone prevents mold from forming in the basement. An air purifier is a great addition to clean and freshen the air. 

Air Purifier Vs. Dehumidifier for Basements

An air purifier is focused on removing airborne pollutants such as mold spores, dust, pet dander, and other contaminants.

A dehumidifier is not removing lots of airborne pollution. Dehumidifiers have filters also, but their purpose is to remove extensive pollution that may cause trouble to the dehumidifier. The primary purpose of the dehumidifier is to remove excess moisture from the basement.

Because of different purposes, it is best to use both devices in a basement and cover all bases.

Frequently Asked Questions

Do air purifiers work in the basement?

Yes, air purifiers are an excellent option for a basement. They can improve the air quality and remove harmful particles found in such a room.

How do I purify the air in my basement?

Choosing and purchasing any of the products on the list of top 5 air purifiers will drastically improve the air quality in your basement, but my top choice is the Alen BreatheSmart Flex air purifier.

Will the air purifier get rid of the smelly odor?

Yes! Suppose the air purifier contains a True HEPA filter and a premium carbon filter. In that case, it will purify and freshen the air in your basement.

Finally, which is the best air purifier for a basement?

It’s very important to know that the air quality in a basement is generally not the best. It can significantly impact your health, especially if you are allergic to dust and mold particles that you find in the air.

That’s why buying air purifiers is the ideal solution for you to be safe and to be able to spend time in your basement. This will help you get rid of unpleasant odors and harmful particles from the air. The best one for this purpose is definitely my top number one, Alen BreatheSmart Flex air purifier for the basement.

If you have any questions or concerns, please feel free to leave a comment or contact me directly by email.

Update Log

July 26, 2021 – I completely updated and improved the article with new and much better suggestions.


  1. John Janicky July 29, 2021 Reply
    • Milan A. July 29, 2021 Reply

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