Mold under microscope

Basement Air Purifier That Kills Mold

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Mold can be a major nuisance in your home, especially in your basement. This article is designed to teach you about mold, its effects, and how to use a basement air purifier that kills mold. Although these air purifiers are perfect for a basement, they can also be used for any room in your home.

For years, people have suffered from the effects of mold. Mold will not only affect your health but can also destroy the value of your home. Investing in an Air Purifier that kills mold will help to remove the mold in your basement and kill mold spores that are floating in the air.

Basement Air Purifier Comparison

Top Air Purifier

Silver Onyx 

  • Performance: ★★★★★
  • Power: ★★★★

Runner Up

GermGuardian AC4825

  • Performance: ★★★★
  • Power: ★★★

The Best Basement Air Purifier Review - 2019

#1. Silver Onyx Air Purifier for Basements

  • Pre-Filter
  • True HEPA Filter 
  • Activated Carbon Filter 
  • Clean Air Ionizer 
  • UV-C Sanitize
Room Coverage (sq. ft.)


This product is manufactured by SilverOnyx. Silver Onyx is well respected in the air purifier industry, and many believe they manufacture the best air purifiers on the market.

The SilverOnyx air purifier was chosen as our favorite basement air purifier thanks to its unique design, advanced technology, and 5-stage purification process. Not only is this air purifier great for basements, it is also one of the best all around purifiers on the market in 2019. The Silver Onyx offers a unique purification process that includes a barrel type pre-filter, HEPA filter, and Activated Carbon Filter. This purifier also offers the option to use technologies such as ionization and UV-C sterilization (perfect for removing mold). Additionally, unlike many traditional air purifiers, the Silver Onyx uses a HEPA filter to remove particles (such as mold spores) before sterilizing contaminants and eliminating odor.

The purifier utilizes a 360-degree tower style design that takes up less space in comparison to most flat filter purifiers. While taking up less space, the purifier still allows for 60% more filtration surface area. This increased amount of surface area allows for the 5 stage filtration process to be exposed to more cubic meters of air per minute than its competition. 

The Silver Onyx’s True HEPA filter will remove 99.97% of air particles that are at least .3 microns in size. To put this into prospective, a mold spore generally ranges from 3-100 microns. The HEPA filter alone will remove all mold spores that flow through the purifier. Any bacteria, dust mites, or mold spores that somehow make it through the HEPA filter will then be destroyed in the UV-C light chamber or eliminated by the ionizer. Additionally, the purifier’s advanced carbon filter will significantly reduce musty/moldy smells produced from mold as well as other smells such as smoke, trash, and kitchen odor.

With 4.3 out of 5 stars on amazon and over 280 customer reviews, it is safe to say that people are pleased with this purifier. Click on the Amazon link to see prices.

#2. GerGuardian AC4825 Air Purifier for Basements

  • Pre-Filter
  • HEPA Filter
  • Activated Carbon Filter 
  • Optional UV-C light
Room Coverage (sq. ft.)


Manufactured by Guardian Technologies. Guardian Technologies is at the forefront of air purification technology and has a line of products that include air purifiers, sanitizers, humidifiers, and essential oil diffusers. 


The GermGuardian was chosen as the second best air purifier for basement mold removal because of its wide respect and popularity in the air purification industry and its advanced technology. It is one of the highest rated air purifiers on the market and offers top of the line performance for an affordable price. With an amazon rating well above 4.0 and over 6,000 reviews, its safe to say that this purifier is one of the most trusted on the market. 

This unit comes with multiple purification technologies and cleans the air of all impurities including mold and mold spores. It also has a slick and compact design that blends well with every space. The best part about this purifier is that it works just as well as one that costs three times more. 

With a true HEPA filter, the purifier will remove 99.97% of airborne mold. Additionally, its advanced activated carbon filter will remove musty odors from your basement.  The combination of these technologies offers the best results for removing mold from the air in your home. 

What is Mold?

Mold is scientifically classified as fungi and grows in fuzzy, filamentous form on food and other wet surfaces. It will grow on walls, floors, carpets, air vents, and anywhere else that offers a moist environment including basements. Basements and cross bases are perfect breeding grounds for this fungi because they offer an ideal environment for growth. It’s important to regularly inspect your basement for signs of mold as living with mold in your basement can expose people to severe health risks.

Mold comes in all sizes and shapes. It can range from nasty bacterial fungi like Fusarium, Cladosporium, and Alterneria, to Penicillum, which is used as source of life-saving medicine. While not all types of mold are necessarily bad, their presence alone can make life miserable for people who suffer from mold allergies or have respiratory issues. Additionally, the mold that grows in your home or workplace is always bad for your health. When it comes to dangerous types of mold (such as black mold), it must be immediately removed to prevent health effects.

Signs of Mold in Your Home

  • Smelling Mold Odor

Moldy or musty smells are often signs of mold growth in your home. These smells will most likely intensify during spring and summer seasons as the temperature rises. 

  • Signs of Mold Growth

Many people surprisingly don’t notice the obvious signs of mold growth in their home. Be sure too look behind appliances, in cabinets and under furniture.
  • Water Leaks

Mold problems are often created in areas that leak water. If you have a known water leak in your house be sure to check the area on a regular basis for signs of mold.

Facts About Mold

Now that you have an idea of what mold is, let’s take a look at few things that you might not be aware of:

  • Mold is scientifically classified as fungi, a class of microscopic organisms that make their homes in dark, damp and warm places i.e. humid locations. So, any area in your vicinity that has both of those things (basement) will be covered in some sort of mold if steps aren’t taken to prevent it.
  • Some types of mold can be useful in changing the texture and taste of food. For example, cheese and leavened bread (pizza) are often made from types of mold.
  • It can exist in different shapes and forms, some being visible to the human eye and others only being detectable by microscope.
  • Mold is often responsible for biodegradation of a number of materials, which can be a good thing.
  • The U.S Center for Disease Control and Prevention (CDC) states that living in a home with mold will increase the risk of respiratory disease.

How Mold Affects Your Health?

The thing is, mold is always in the air we breathe. It’s a common part of dust particles found in our homes and offices, but in small quantities. When mold settles in a moist area, it will grow to its full potential. This is when it can grow into a health hazard for most individuals. When mold has the ability to spread, it will cause ailments that range from allergic reactions, respiratory problems, and more. Some molds are even capable of producing mycotoxins, which can be extremely detrimental to one’s health if exposed for a long periods of time. Thus, if mold is present in large quantities in your residence, it is an immediate health hazard.

How Mold Gets/Grows in your Home and Basement?

As mentioned, mold can easily travel and multiply in the right environment. Mold spores (individual fungi) are no more than 3-5 microns in size. This enables them to enter through microscopic areas to find a place to breed, and they are quick to make themselves at home. Mold spores are capable of making both indoor and outdoor air unbearable for some.

As stated above, basements are easy breeding grounds for mold spores. Most basements and cross bases are not completely sealed from the outside air. Therefor, mold can be sucked through tiny spaces. It is almost inevitable that mold will enter into a basement in some form. The only way to effectively prevent it from spreading is to use an basement air purifier that kills mold.

Once in a basement, mold will quickly grow. Basements are often neglected from proper air filtration and offer moist environments for mold growth.

Once mold begins to grow it can be hard to stop. If the mold only covers an area that is slightly less than 10 feet in diameter, then you should be able to handle it all by yourself. But, if you are trying to eliminate moly that has spread over a large area, then you may have to bring in the big guns (basement air purifier that kills mold).

How to Prevent Basement and Indoor Mold Growth?

The deal with mold is, once it settles in the perfect place, it settles. You have to take dramatic steps to eliminate it. The best way to eliminate mold is to change the habitat that provides mold spores with ability to breed and spread. In order to keep health issues that accompany mold growth at bay, you need to take preventive measures.

One of the most effective strategies in regards to mold growth is the use of an air purifier with a HEPA air filter. HEPA, which stands for High Efficiency Particulate Air, is a form of air purifying filter that excels at trapping microscopic particles. The particles that HEPA air purifiers can successfully trap are 0.3 microns in size. Because mold spores are larger than .3 microns in size, a HEPA filter is capable of capturing 99.97% of the mold entering your home or workspace.

Air purifiers are more than enough to filter the air coming into your home. They will keep air-borne mold and other contaminants such as dust, smoke, germs and bacteria at bay. This not only improves health issues for you and your family, but also gives you access to better, fresher, and cleaner air.

With that being said, in order to make sure that your air purifier keeps doing what it is supposed to do, you must be using an air purifier with the right kind of filter.

How an Basement Air Purifier That Kills Mold Works

There are many different types of air purifiers and air purifier technologies. Some of the most popular technologies include True HEPA Filters, Activated Carbon Filters, Ionizers, and UV Sanitizers.

As explained above, the type of air purifier technology that is best for killing mold is a HEPA Filter. Another technology that is commonly overlooked is a UV Sanitizer. UV sanitizers use highly concentrated ultraviolet light to kill bacteria and fungi such as mold spores. Ultraviolet light is the same kind of light that burns your skin in the summer. An air purifier with this technology will essentially burn organisms to death and fry their cells from the inside out.

An activated carbon filter will help to remove mold spores, but its most valuable attribute is its ability to eliminate odor. If you are also trying to remove the musty smell created from mold, then make sure to buy an air purifier that has an activated carbon filter.

Using these three technologies in tandem will produce the best results. An activated carbon filter will remove musty smells, a True HEPA filter will remove airborne mold spores, trap them, and prevent future mold growth, and a UV light will kill any remaining spores that make it through the HEPA filter. The result of a basement air purifier that kills mold is clean, fresh, and purified air.


Protecting your basement from mod growth is important to a safe home. Use the best basement air purifier to reduce musty odors and mold growth in your house. These air purifiers will improve indoor air quality and promote healthy breathing air.

Also check out these related articles: 

Speak to a 24/7 Mold Professional in Your Area


  1. The GermGuardian Air purifier actually works well for removing the mold in my basement, but it does not cover a large area. Is there a bigger version of this air purifier?

    • The Germ Guardian does not have a larger size. I recommend the LV Pur-131 for a larger sized air purifier

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