Best Air Purifier for Mold Spores and Mildew (Buying Guide and Reviews)

Best air purifiers for mold spores and mildew are Trusens, SilverOnyx and Airfree

Are you searching for the best air purifier for mold and mildew?

But not sure which one to buy?

If so, you’ve landed on the right page.

In this guide, we’ll show you how to get the best air purifier for mold spores so you can prevent the reproduction of these microbes in your home.

As you’ll discover below, the best mold air purifier comes in two types.

And you have to pay special attention to the types of air filtering technologies it uses in order to get one that works well against mold and mildew.

Best Air Purifier for Mold Comparison Chart

Here’s a chart showing the comparison between the top three best air purifiers for mold and mildew.

We’ll go more in depth about each one later in this guide but this gives you a sense of what’s available and an easy way to quickly compare them.

ImageNameFilter TypesCoveragePrice
Trusens Air PurifierTrue HEPA, Carbon, UV Light250 to 750 sq. ft.$$$
SilverOnyx Air PurifierTrue HEPA, Carbon, UV Light, Ionizer500 sq. ft.$
Airfree Air PurifierThermodynamic Heating180 to 650 sq. ft.$$

Best Types of Mold Air Purifiers

When it comes to air purifiers, there are many different types and technologies available to clean the air.

And each top rated air purifier product is designed to combat certain issues inside the home.

For example, one air purifier may be excellent at removing odors, but not so good at reducing mold and mildew. Another may be a superior mold air purifier, but poor at eliminating dust.

So, to help you find the best mold air purifier possible, we’ve outlined everything you need to know and look for in a high-quality device.

When you’re shopping for an air purifier for mold removal, you have two options:

  1. Filter-based air purifier
  2. Thermodynamic air purifier

A filter-based air purifier is the cheapest type to buy and very efficient at removing mold spores. However, it does come with yearly maintenance fees to replace the filters (about $50-100 depending on the size of the unit).

A thermodynamic air purifier, on the other hand, is more expensive to buy upfront but costs you nothing to maintain because it doesn’t use filters. This device generates heat to kill mold spores.

Next, we’ll explain exactly how each of these types of mold air purifiers work and what features to look for in a good unit.

Filter-Based Air Purifiers for Mold

Filter-based air purifiers are the standard type of air purifier you’ll come across today.

And they come in a wide variety that uses many different technologies to clean the air.

What this means is that not all filter-based air purifiers are designed to get rid of mold and mildew.

If you want to buy a filter-based air purifier, you’ll want one that has all of the features listed below to ensure that your home stays free of harmful mold spores.

  • True HEPA Filter — This filter is essential because it’s the only one that’s certified to capture particles as small as 0.3 microns, which includes mold spores. Watch out for air purifiers that use lower-grade HEPA filters that go by the names, “HEPA-like”, “HEPA-type”, or just simply “HEPA” as they’re inferior to a True HEPA filter.
  • Activated Carbon Filter — This filter is necessary to get rid of musty mold odors. A HEPA filter cannot trap those particles because they’re made up of gaseous vapors. Without this filter, you may get rid of the floating mold spores but the smells left behind by mold and mildew will still exist.
  • Ultraviolet Light — This is also a crucial element because it’s the only technology that can actually kills mold spores. As air passes through the air purifier, the ultraviolet light breaks up the DNA structure of mold, bacteria, and viruses, which stops their reproduction and renders them harmless.

Thermodynamic Air Purifiers for Mold

Thermodynamic air purifiers use a completely different method that filter-based air purifiers to remove mold and mildew from your home.

Instead of trapping particles inside filters and killing mold spores with an ultraviolet light, a thermodynamic air purifier uses heat alone to incinerate microorganisms.

A thermodynamic air purifier destroys every airborne particle that comes through its path, including microorganisms, mold spores, allergens, dust, and more by vaporizing them at 400° Fahrenheit.

The major advantages to owning a thermodynamic air purifier include:

  • Zero maintenance or filters to replace
  • Completely silent
  • Have the lowest energy consumption
  • Vaporizes every harmful particle that flows through the system

Which Type of Air Purifier for Mold Should You Buy?

Now that you know how each type of air purifier works to eliminate mold and mildew, you may be wondering which type should you buy.

The truth is that both versions of air purifiers do an excellent job at combating mold.

However, here are some questions you can answer that will help guide you to the best purchase:

  • Do you want to spend the least amount of money today on an air purifier? Get a filter-based air purifier.
  • Is the upfront cost not a concern? Get a thermodynamic air purifier.
  • Are you o.k. with keeping up with filter changes? Get a filter-based air purifier.
  • Do you want a maintenance-free machine? Get a thermodynamic air purifier.
  • Does fan noise bother you, even at low speeds? Get a thermodynamic air purifier.
  • Do you need to see the collected contaminants that have been stripped from your home so you know that the air purifier is actually working? Get a filter-based air purifier.
  • Can you trust that the air purifier is working even if you don’t see a dirty filter? Get a thermodynamic air purifier.
  • Do you want a machine that you can play with and control and includes features like scheduling, shutoff timers, sleep modes, fan speeds, etc? Get a filter-based air purifier.
  • Do you want a device that you never have to touch? Get a thermodynamic air purifier.

Hopefully, after reading through those questions, you have a better idea of which type of mold air purifier you prefer.

Next, we’ll show you what the best air purifiers for mold are for every size room so you can find the perfect machine for your needs.

The Best Air Purifiers for Mold

Trusens air purifier for mold and mildewTrueSens Air Purifier

If you’re looking for the best air purifier for mold and mildew that comes in a variety of sizes, this is going to be your top choice.

In fact, it comes in three sizes to meet the most common needs:

No matter which version you choose, you’ll get the same powerful set of features, including:

  • 360-degrees of Air Filtration The cylindrical filter design pulls air in from every side of the machine as opposed to just one like other brands.
  • Dual Airflow — This splits the clean air into two streams which makes this air purifier 24% more efficient than the competitors.
  • True HEPA Filter — For trapping 99.97% of mold spores and other pollutants down to 0.3 microns in size.
  • Activated Carbon Filter — For eliminating mold and mildew odors.
  • Ultraviolet Light — For destroying mold and mildew particles.
  • SensorPod — A small device helps the air purifier better detect contaminants throughout the whole room.
  • Color-Coded LED Feedback — Know exactly how good or bad your air quality is with LED numbers and color-changing lights.

If you want a filter-based mold air purifier that has it all, this is the brand to pick.

See Amazon Reviews

SilverOnyx air purifier for mold sporesSilverOnyx Air Purifier

If you have a medium to large size area of your home that you want to protect against mold spores, and want to save a bit of money, then this is going to be your next best choice.

The SilverOnyx air purifier has all of the essential features that make it one of the best air purifiers for mold spores, including:

  • True HEPA Filter To combat mold spores, bacteria, and fungi.
  • Activated Carbon Filter — To remove musty odors caused by mold and mildew.
  • Ultraviolet Light — To kill off microbes so they don’t reproduce inside the room.
  • Ionizer To enhance the air cleaning capabilities. This feature emits charged ions in the air to neutralize airborne contaminants and extend the life of the internal filters.

Like our first review, this air purifier also includes 360-degrees of air filtration, which is the best type you can get.

While the top LED display doesn’t change color to indicate air quality levels, it does still give you an accurate reading of particulate matter in the air.

Plus, you can set this unit up to be fully automatic to adjust the airflow to remove detected contaminants.

See Amazon Reviews

Airfree air purifier for moldAirfree Air Purifier

If you’d like to have a thermodynamic air purifier in your home that can wipe out any particles that pass through it, Airfree is going to be your brand of choice.

What’s great about this brand is that they make a device for most every room size:

This air purifier is 100% filterless and uses extreme heat to vaporize all types of pollutants, including mold spores and bacteria. Plus, you never have to pay a penny to maintain it.

It’s also completely silent without any moving parts, so it should last a lifetime without any worries about repairs.

If you want great air purifier for mold and mildew that works without any hassles, this line of products will far exceed your needs.

See Amazon Reviews


Additional Information on Mold and Air Purifiers

Mold Allergy Symptoms

The symptoms for mold allergies vary from person to person and the severity of health issues can range from mild to severe.

If you have a consistent problem with mold in your home, then you’ll likely experience the below symptoms all year round. However, if mold only pops up at certain times of year indoors, these symptoms may be intermittent.

  • Sneezing
  • Runny or stuffy nose
  • Watery eyes
  • Cough
  • Postnasal drip
  • Itchy eyes, nose or throat
  • Dry, scaly skin

If you suspect that you have a mold allergy, the best thing you can do is get an allergy test by a physician to confirm your suspicions.

If you do have mold allergies, then you’ll likely be told to find the source of the mold and mildew inside your home and clean it up in addition to running an air purifier to slow down the growth of these microbes.

While nasal corticosteroids and decongestant medications are available to help reduce your allergies to mold, the best course of action is to eliminate the spores from the air around you. Otherwise, you’re just treating the symptoms and not the core source of the problem.

Mold Prevention Tips

Using an air purifier in your home is a great first step to cutting down on your exposure to toxic mold and mildew.

But, there are additional things you should also do to keep these microbes at bay.

By following these tips, you can dramatically lower the mold spore count inside your home so that it stop being a threat to your health.

  • Fix any water leaks. Mold and mildew need moisture to grow and any source of water that’s leaking in your home can give these microbes the damp environment they need to thrive.
  • Make sure that every room is well ventilated. Mold and mildew thrive in areas without free-flowing air.
  • Use a dehumidifier in rooms with high humidity. Mold and mildew need relative humidity above 50% to live. By using a dehumidifier to lower the RH levels to below 50%, you can stop these microbes from formulating.
  • Regulate the temperature. Most mold and mildew need a temperature of 70 degrees Fahrenheit to multiply. By keeping room temperatures below that level, you can stop mold from spreading indoors.
  • Keep every surface dry. This includes walls, floors, and ceilings in every room. Pay closer attention to bathrooms and basements where water and moisture often collect the most.

Common Types of Household Mold

  • Alternaria — Located in dark, damp areas like the under the sink and in the shower.
  • Aspergillus — Incredibly common on surfaces through the home. Causes severe reactions such as respiratory infections, allergic responses, and inflamed lungs.
  • Aureobasidium — Grows on wooden furniture, painted walls, and wallpaper. A spotty substance that’s pink and black.
  • Chaetomium — Found on drywall that’s had water damage. Causes a musty odor.
  • Cladosporium — Can grow in both cool and warm areas inside the home, and is found most often in carpeting, wood floorboards, cabinets, and old fabrics.
  • Fusarium — Grows in colder, wetter areas. Thrives inside carpeting and related fabrics.
  • Penicillium — Very common indoors. Found on ceilings, inside insulation, on furniture, inside carpeting, and more. Spreads quickly indoors and causes strong allergic reactions.
  • Stachybotrys Chartarum — More commonly known as “black mold” that releases toxic compounds called mycotoxins. Found in damp areas and causes a number of respiratory issues and allergic reactions.
  • Serpula Lacrymans — Grows inside on wooden surfaces and causes rot.
  • Trichoderma — Like black mold, this too produces mycotoxins and grows in damp areas.
  • Ulocladium — Mostly found in areas that have experienced severe water damage from flooding.

What About the Other Air Purification Technologies That Exist?

These days, air purifiers come with a variety of features and rarely ever include just one type of air purification technology. The exception to this is thermodynamic air purifiers which only use heat to kill off mold and mildew.

Therefore, it’s good for you to know what the other most common types of air cleaning technologies are so you can ensure you don’t end up buying the wrong machine.

The best air purifier for mold includes the features we outlined at the top of this guide, but here are some other common technologies you may come across:

  • Ionizers — These machines send out charged ions into the air to latch onto mold spores. This bond causes the particles to fall out of the air and land on surround surfaces. An ionizer does nothing to destroy mold spores, it just removes them from the air temporarily.
  • PECO — This short for Photo Electrochemical Oxidation and it oxidizes organic matter like mold. PECO filters are a major competitor against True HEPA filters because PECO actually destroys particles instead of just trapping them like a HEPA filter does. The only problem with PECO is that it’s a patented technology and only one air purifier company uses it. Plus, it’s expensive.
  • PCO — This is short for Photocatalytic Oxidation and it’s the non-patented version of PECO. It works well against mold but produces a trace amount of ozone (0.01 – 0.04 ppm). It’s also more expensive than standard filter-based air purifiers.

Mold Removal is a Constant Process

If you were to take an air sample in any home around the world, you’ll find at least some level of mold growth. The same thing is true if you take and outdoor air sample.

Mold is everywhere and will never go away for good.

That’s why running an air purifier 24/7 in your home is so important for mold removal.

Battling mold is a constant process and by using an air purifier combined with the mold prevention tips listed above, you can ensure that you’re doing everything you can to protect yourself from these invisible particles.

We hope you found the best air purifier for mold and mildew that meets your needs on this page.