5 Best Air Purifiers to Prevent Black Mold in Your Bathroom

air filter for pet allergies from dogs

By Mirakle Stillman

12 min read

Mold, a common fungus found almost anywhere in nature, exists where moisture is present. What better place to store up moisture than where all the water action is? That’s right, the bathroom. The build-up of that moisture can determine whether the mold will grow or remain controlled. When it comes to black mold prevention, we often don’t think about it until the problem has already occurred. Black mold can seem like an inconvenient hassle when you aren’t prepared to deal with it. Fortunately, you can easily prevent the issue with something as simple and efficient as an air purifier.

Black mold holds the most potential danger. The scientific name is Stachybotrys chartarum and it gets its name from its dark color. It’s more likely to grow on things made from cellulose, like paper, drywall, and wood, but can appear anywhere warm and wet. There’s no doubt this type of mold can and does occur in the bathroom.

If you have an existing black mold problem in your bathroom, you’re better off physically cleaning and removing it at the source, usually with a bleach solution. You must also remove the moisture accumulation source. It’s also important to note that air purifiers will not remove all mold spores from the air. Spores are everywhere, and therefore it’s pointless to worry about removing every single one.

Top Pick

Alen Breathesmart
45i Air Purifier

Buy on Amazon

An air purifier can help reduce the concentration of spores in the air and keep the air from becoming too damp around it. Staying consistent with changing the filters can also remove an unpleasant smell resulting because of an existing mold problem. An air purifier can offer a long-term solution for preventing an inevitable increase of moisture that is sure to occur in your bathroom. Air purifiers don’t only work in the bathroom but also in other home spaces known to develop large quantities of moisture, such as in a basement or living room. Remember, though an air purifier can help long-term mold spores in the air, only physically cleaning up the mold and removing the moisture that allowed it to grow will solve a visible mold problem.

Best Air Purifier for Black Mold 

2nd Best Air Purifier for Black Mold 

Better Air Purifier for Black Mold 

2nd Better Air Purifier for Black Mold 

Good Air Purifier for Black Mold 

Alen BreatheSmart
45i with Carbon
Air Purifier

$398 Buy on Amazon
Rabbit Air
BioGS 2.0
Air Purifier

$400 Buy on Amazon
Austin Air
Bedroom Machine
Air Purifier

$765 Buy on Amazon
Coway
AirMega 400
Air Purifier

$520 Buy on Amazon
Sharp
Plasmacluster Ion
Air Purifier

$203 Buy on Amazon

Best Air Purifier for Black Mold

45i

Alen BreathSmart 45i Air Purifier

$ 429 Buy on Amazon

Pros

True Hepa Filter

Laser Smart Sensor

Multiple color options: White, Espresso, Graphite and more

Cons

Weight

Features and Specs

  • Dimensions: 8.5 x 15 x 25 inches
  • Weight: 21.4 pounds
  • Four-stage filtration system
  • Medical-Grade True HEPA filter and B4-Pure filter
  • 800 square feet room coverage

The Alen BreatheSmart 45i Air Purifier has a sleek, modern design that cleans rooms up to 800 square feet. Its HEPA filter can remove particles from any bathroom, including allergens, bacteria, and mold spores. It has a Laser Smart Sensor that can detect airborne particles and automatically adjust to your environment's conditions. This air purifier can get the job done in preventing a rising mold issue before it's started.

2nd Best Air Purifier for Black Mold

Rabbit Air BioGS 2.0 Air Purifier

$ 399 Buy on Amazon

Pros

24/7 lifetime technical support

BioGS HEPA filter and Activated Charcoal filter captures 99.97 percent of airborne particles as small as 0.3 micron

Energy Star rated

Cons

One color option: white

Features and Specs

  • Dimensions: 8.5 x 15 x 25 inches
  • Weight: 21.4 pounds
  • Four-stage filtration system
  • Medical-Grade True HEPA filter and B4-Pure filter
  • 800 square feet room coverage

The Rabbit Air BioGS 2.0 has four-stages of filtration that can clean bathrooms up to 625 square feet twice every hour. This quiet air purifier has True HEPA and Charcoal-based Activated Carbon filters that can last up to three years of consistent use. The Rabbit Air BioGS 2.0 is a certified Energy Star-rated air purifier with a five-year warranty and 24/7 support.

Better Air Purifier for Black Mold

Austin Air Bedroom Machine Air Purifier

$ 764 Buy on Amazon

Pros

Five-year warranty

True Medical-Grade HEPA filter captures 99.97 percent of airborne particles larger than 0.3 microns

Multiple color options: Sandstone, Midnight Blue, and White

Cons

Weight

Features and Specs

  • Dimensions: 14.5 x 14.5 x 23 inches
  • Weight: 53 pounds
  • Five-stage filtration system
  • Three fan speeds

Mold accumulation can cause the air to become harder to breathe for those with allergies, making it harder to sleep at night. With the Austin Air Bedroom Machine Air Purifier, you can be sure that you will continuously breathe clean air and sleep better, preventing mold spread. Its True medical-grade HEPA filter eliminates everything from dust and pet dander to pollen and other allergens.

2nd Better Air Purifier for Black Mold

Coway Airmega AP-1512HHS Hepa Air Purifier

$ 229 Buy on Amazon

Pros

True HEPA filter and Activated Charcoal filter captures 99.97 percent of airborne particles as small as 0.3 micron

Works with Alexa

Coway IoCare Mobile App

Cons

Covers up to 325 Sq Ft

Features and Specs

  • Dimensions: 22.5 x 22.2 x 12.4 inches
  • Weight: 19.76 pounds
  • Three-stage filtration system
  • 325 square feet room coverage
  • Energy Star Rated

The Coway Airmega cleans the air up to 325 square feet and comes with a washable pre-filter. This air purifier is energy-efficient with a True HEPA filter and an Activated Charcoal filter, capturing airborne particles. If you enjoy smart devices' convenience, its Coway IoCare mobile App allows you to monitor the air quality indoors and outdoors. The air purifier also works with Alexa showing the indoor air quality in real-time.

Good Air Purifier for Black Mold

Sharp Plasmacluster Ion Air Purifier

$ 229 Buy on Amazon

Pros

True HEPA filter captures 99.97 percent of airborne particles as small as 0.3 micron

Low noise operation

Long-life True HEPA and active carbon filters lasts up to two years

Cons

Covers up to 259 Sq Ft

Features and Specs

  • Dimensions: 8.2 x 15.1 x 21.3 inches
  • Weight: 11 pounds
  • Three-stage filtration system
  • Plasmacluster Ion technology and True HEPA filter eliminate airborne particles traditional filters cannot trap
  • 259 square feet room coverage

The Sharp Plasmacluster Ion Air Purifier has a three-stage filtration system, including a True HEPA filter and 15 pounds of activated carbon to eliminate odors, especially in bathrooms. These filters capture up to 99.97 percent of airborne particles as small as 0.3 microns. This air purifier includes a washable pre-filter for larger airborne particles as well.

What to Consider When Choosing An Air Purifier

It would help if you considered multiple factors before going out and investing in an air purifier for your bathroom. Assessing these different circumstances will help you make a suitable investment and get an air purifier that will be up to the challenge your bathroom gives it.

What is your family’s health history?

Is there anybody in your family that is predisposed to allergies, asthma or other respiratory issues? If so, consider how often you should purify the air and clean the bathroom. According to the American Lung Association, mold exposure can cause allergic reactions, asthma symptoms, and other upper and lower respiratory problems. With or without allergies, anyone may experience eye skin, nose, throat, and lung irritation when exposed to airborne mold spores.

How much is your bathroom used?

Room usage will have a significant impact on the effectiveness of the air purifier. It is a given that your bathroom will be used every day, at least a couple of times. Therefore, you must consider how many people live in your home and how often they use the bathroom. The more bathroom usage, the more it will demand out of your air purifier.

What’s the size of your bathroom?

If your bathroom is on a larger scale, it will require more out of the air purifier’s cleansing abilities. Familiarize yourself with what is known as a clean air delivery rate, otherwise known as CADR. The measurements aren’t perfect, but it’s the best way to gauge how strong the air purifier will be for your space. A purifier with a lower clean air delivery rate will struggle to purify the air in a large room. In contrast, one with a higher clean air delivery rate should do just fine, so, rule of thumb, big bathrooms need a higher CADR-rated air purifier.

What are the types of pollutants you may come across?

There are common types of pollutants that are always going to be present in your bathroom. It’s helpful to recognize what contaminants are in there when it’s time to check for any visible changes, such as mold. Bathrooms are one of the most common air pollution sources in homes, which increases the importance of an air purification system, especially if there are family members with compromised immune systems. Showerheads and faucets will naturally accumulate bacteria and mold from the moisture in your bathroom, and if it’s not monitored correctly, the situation can go from bad to worse.

Do you have quality ventilation?

Bathrooms should have adequate ventilation to vent moisture outside the house. If they don’t, condensation can build on the walls, ceiling and allow mold to grow where you didn’t expect. Air-conditioning can act as a dehumidifier and help control humidity levels in the house, mainly the bathroom where mold spores can be a problem.

Top Air Purifiers for Mold Prevention in Your Bathroom

When choosing an air purifier for mold, the critical component is to pick one with a HEPA filter. They are essential to getting the most quality air. Mold spores die inside the HEPA filter because the environment inside is dry. This means mold can’t reproduce due to needing moisture to thrive. HEPA stands for High-Efficiency Particulate Air filters and can remove at least 99.7% of dust, bacteria, mold, and more.

Make sure also to check the warranty of the air purifier before you buy it. Mold can always come back, so invest in a purifier that will last you a long time or can at least be replaced if not. Run your air purifier at all times to keep your air fresh and mold-free.