How to Choose an Air Purifier for Mold

Air Purifier for Mold

At least 45 million buildings in the United States possess unhealthy levels of mold, according to  a 2017 study. Considering how frequently mold can go unnoticed within walls and along window sills, the actual number could be higher still. An air purifier for mold can help keep vulnerable spaces safe from harmful spores and prevent a variety of dangerous health conditions.

Mold can start to grow on damp surfaces in just 24 to 48 hours, and can often go unnoticed for weeks or even months in some settings. An air purifier for mold helps alleviate this risk by filtering out mold spores in the air and ensures pure, clean air quality.

The best way to combat mold outbreaks and keep air clean in your home or place of business is by choosing the best air purifier for mold spores. There are many different kinds of air purifiers for mold available, but you need to choose one that fits your needs and those of the space it will occupy.


Why You Should Consider a Mold Air Purifier

In addition to causing damage to your property, mold can result in a number of adverse health effects including coughing, wheezing, and asthma attacks. Health reactions can be even worse in those who have an allergy or sensitivity to mold and mycotoxins. According to a 2007 study by Berkeley University and the Environmental Protection Agency, 4.6 million cases of asthma in the United States could be directly linked to mold exposure.

Mold exposure has also been linked to mental health conditions like depression and memory loss. According to Psychology Today, 25% of the population has genetic dispositions that can result in long-term conditions like insomnia and  fibromyalgia when exposed to toxic mold spores.

As such, removing mold spores from indoor spaces can go a long way not just to prevent coughing and sneezing, but also to keep inhabitants safe from long-term health conditions like asthma. That’s why selecting the best air purifier for dust and mold is important for health, safety and comfort.

It’s important to choose an air purifier that kills mold spores, as the particles are too small for some less specialized commercial air filters to handle. As such, selecting an air purifier that removes mold with a HEPA filter is essential. A HEPA filter, or “High-Efficiency Particulate Air” filter has ultrafine fibres made with polypropylene or fiberglass that are able to capture at least 99.97 percent of airborne particles as small as 0.3 microns. This is what makes a commercial HEPA air purifier an absolute asset.

Other key factors when selecting an air purifier for mold for your home or office are: 

  • Size
  • Energy efficiency
  • Automation settings
  • Noise
  • Mobility 

With that in mind, here are some things to consider when selecting air purifiers for mold for home, office and professional settings.


What to Look for in an Air Purifier that Removes Mold

1. Cost of an Air Purifier that Removes Mold

Often the most important consideration when selecting an air purifier for mold, it’s important not to make judgements solely on the unit’s up-front cost, but rather its lifetime cost. Replacing air purifier filters can quickly become more expensive than the initial purchase price. 

Usually, an air purifier filter should be replaced at least annually, if not every six months. Some models, however, may require even more frequent replacement. The cost of replacement filters can also vary greatly, ranging from $20 to $200.

In addition, energy efficiency is a very important factor as air purifiers should run 24/7 for maximum effect. Looking for models that bear the Energy Star certification can significantly reduce costs long-term.

2. Best Air Purifier for Mold Spores – Filtration Methods

Mold Air Purifier

While there are a number of different filtration methods utilized by various air purifiers for mold, some have proven to be more effective than others. 

Mechanical Filters

A traditional air purifier prevents mold by using mechanical filters that capture airborne particles as the air purifier cycles air in the room. Of these, HEPA filter air purifiers are among the most efficient, able to 99.97 percent of particles that are 0.3 microns in diameter or larger.

Carbon Filters

Some air purifiers use carbon filters instead, or as a supplement to traditional filters. The benefit of carbon filters is that they’re better at eliminating odors but less effective at removing mold spores and other air pollutants from the air.

Ozone Filters

Unlike a HEPA air purifier that removes mold by capturing spores within the hyperfine threads of the HEPA filter, ozone air purifiers release a large amount of ozone particles into the air to kill mold and other biological air pollutants.

However, ozone itself can irritate the lungs in large quantities and pose a danger to those with asthma or other respiratory conditions. As such, ozone air purifiers are largely used in industrial settings, but commercial models can be a great fit for residential garages and basements so long as the spaces are left unoccupied during operation. 

Bi-Polar Ionization Units

Some air purifiers use a process called Bi-Polar Ionization to generate a certain amount of positive and negative ions into the air which are then able to combat and destroy air pollutants. This is generally considered to be among the – if not the – best filtration method for air purifiers.

3. Air Purifier That Kills Mold – Size and Space

Portable air purifiers for mold can vary greatly in terms of size, ranging from small desktop units to tall towers. However, they are all only effective up to the maximum area specified, usually in square feet. While a smaller air purifier for mold will likely be effective up to 160sq/f, large rooms generally require more powerful units. 

While any air purifier that kills mold spores should list its effective range in square feet, the AHAM Verifide seal provides an independent certification that the air purifier meets that standard of efficacy. 

4. Best Mold Air Purifier – Quality of Life Features

The design and features of an air purifier for mold are especially important when selecting the best HEPA air purifier for mold to use at home. Contrary to more traditional utilitarian designs, many new air purifiers for mold feature sleek, discret profiles that keep them from standing out too much in a workspace, living room or kitchen setting.

Additionally, higher-end models may feature a variety of additional quality of life features such as voice activation via devices like Amazon Alexa and precise controls via mobile app or bluetooth. Many also feature smart sensors that automatically adjust the speed and power according to the room’s current indoor air quality.

CT Clean Air Tower by Air Fixture: The Best Air Purifier for Dust and Mold

Air Purifier that Removes Mold

Portable, durable, and multi-functional, the CT CleanAir Tower by AirFixture has a number of unique features that make it the best air purifier for mold spores for large-scale projects. The CT CleanAir Tower uses Bi-Polar Ionization to disperse a controlled amount of positive and negative ions, removing mold spores in the air, while simultaneously eliminating other air pollutants. It also utilizes an interior UV light apparatus that neutralizes microorganisms as they pass through.

Both the Bi-Polar Ionization and UV light functions can be utilized at the same time, along with traditional air filtration. HEPA filters can be requested as an optional feature. The device boasts a premium full steel construction with a powder-coated finish, and a number of safety features including a tip-over sensor.


  • Customize with Bi-Polar Ionization, UV treatment, MERV and HEPA filters
  • Durable steel construction with powder coat finish
  • Requires less servicing and fewer filter changes
  • Tip-over sensor
  • Portable and easy to install



  • Best for larger rooms and spaces

All-in-all, the CT CleanAir Tower is the best mold air purifier for professional use in settings like offices and classrooms. Portable and quiet, it’s perfect for large rooms that experience a lot of traffic. The Bi-Polar Ionization method is also a safe, powerful alternative to ozone air purifiers for mold.

GermGuardian by Guardian Technologies: The Best HEPA Air Purifier for Mold for Household Use


  • WiFi and Bluetooth control
  • UV-C light


  • Only effective up to 167 sq. ft.

Among the best HEPA air purifier for mold that’s available for household use, the GermGuardian CDAP5500 is a HEPA air purifier, that features a sleek, black design and slim profile, making it easy to position around the house and can be set to a low, ultra-quiet speed. 

However, as a consumer unit, it’s only effective up to 167 sq. ft. meaning it’s best used in households that require discrete air purification.

Dyson Air Purifier That Removes Mold and Cool Air Humidifier 


  • HEPA Filter
  • Sleek Design
  • Humidifies, purifies and cools


  • Expensive and impractical to deploy in large numbers

With a sleek, slim profile characteristic of the famed British technology brand, the Dyson Purifier Cool is a multifunctional mold air purifier. It also features a HEPA H13 filter with easy modular replacement, as well as voice control via Amazon Alexa, and a sensor that automatically adjusts according to air quality to kill mold

However, it does command a considerable price tag for a commercial unit. Other models may be preferable unless the Dyson brand name is the main selling point.


Get the Best Air Purifier for Dust and Mold

Both at home and at work, ensuring clean, pure air quality is important to keeping staff happy, healthy and productive. However, many air pollutants – like mold – can put your respiratory health at risk.

Airfixture’s CT CleanAir Tower is an industry-leading air purifier that eliminates mold and other air pollutants. When you partner with Airfixture, you’ll receive faster build times, non-toxic high quality materials, and more effective ventilation than competitors. 

Contact us today to learn more about the CT CleanAir Tower and see why it’s the best air purifier for dust and mold on the market.