Best Air Purifiers For Mold In 2018

black best air purifier for mold

We may not be able to see dust and pet dander, but our bodies often react to those pollutants in overt physical ways, such as sneezing and watering eyes. Mold and mildew, on the other hand, are much more discreet in nature. Not only can we not see them, but we often don’t know that our body is reacting negatively to them. Instead of sending us into sneezing fits or causing our eyes to water, mold often makes us tired, lethargic or even ill, sensations many of us attribute to a poor night’s sleep or sickness. Though the verdict is still out on the true effects of mold on one’s long-term health, you can say that mold takes a toll on one’s short-term well-being.

Comparison Table

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Mold is everywhere. You don’t have to have a leaky roof or a burst pipe to have mold in your home. Every building is affected by some level of mold, which is why every homeowner needs an air purifier to help increase air quality and combat the negative effects of fungi. With the right air purifier, you can remove mold from your home and enjoy all the health benefits that come with a mildew-free living.

In this guide, we will review the top five air purifiers for mold and help you find the best air purifier for mold for your home. We will evaluate the pros and cons of each model, go over pricing and even give each unit a rating of between three and five stars (anything less than three stars did not make the list).

best air purifier for mold in white color against a brick wall

How We Chose Our Ratings

Our goal in creating these buyer guides is to provide consumers with accurate, honest and detailed information. When determining which products make the cut, we review hundreds of online reviews from real customers, product data and specs, and the company’s overall reputation. The products you see featured here today are here because of their own merit, and not because we have ties to any one company.

Terminology You Should Know

Before we delve into the different options, it’s important for you first to understand the various terms you’ll see in this guide. Otherwise, all of the reviews will be more of a coded headache rather than a shopping help.

how an air purifier for mold works

HEPA Filter

HEPA filters, or “high-efficiency particulate air,” are some of the best on the market. They can trap tiny particles such as dust, pollen and smoke in their fine mesh workings. HEPA is the gold standard, and if a unit doesn’t utilize a HEPA filter, it’s probably not worth your money.


97 Percent Efficiency

Filters that boast an efficiency level of 99.97 percent are often referred to as true HEPA, as these filters meet the nation’s minimum requirements for percent of particles taken from a room, which is approximately 0.3 microns.



This refers to ultraviolet C light, which is a short-wave UV radiation source that kills bacteria.



VOC refers to volatile organic compounds, which are typically the tiniest atoms found in any given space. Unfortunately, most filters cannot remove these compounds. However, these compounds are often reduced to gas at room temperature.


Activated Carbon Charcoal

This porous carbon is treated and designed to adsorb chemicals and odors.



Also referred to as plasma, ionization is the use of a significant amount of current to create negative ion elements, which are used to destroy molecules as they bond to them. Though there are no criteria for ionization when it comes to air purifiers, science suggests that it is these very ions that allow purifiers to do their jobs.



The Clean Air Delivery Rate is the rate at which a purifier can cleanse the air of certain sized particles. Some purifiers work faster to eliminate the air of tiny particles such as dust, pollen and smoke, which is why they often receive a higher CADR than many other filtration systems.

Now that you understand the terms associated with air purifiers, it’s time to talk about the best air purifiers for mold.

5 Best Air Purifiers for Mold

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So far, Alen’s BreatheSmart line has topped many of our air purifier guides, and for a good reason. The company invested a lot of time and effort, not just into the function of its unit, but into the form of it as well. Traditionally, air purifiers are bulky and just plain ugly. Alen’s BreatheSmart unit, however, is exactly what its name implies: customizable. Some of its top-selling options include a rosewood and stainless steel exterior, though more creative types might enjoy the blank face, which owners can paint or decorate as they see fit.

Looks aside, the unit comes with several other advantageous qualities. For one, it emits a “pink noise,” which is designed to drown out any other noises that disturb your family’s sleep. How it works, we’re not sure, but that’s what product specs and customer reviews claim. It features a HEPA-Silver filter, which serves to reduce the amount of dust, pollen and other allergens in the air, including mold. An auto-function feature ensures that your home is cleansed twice every hour. However, if the Smart Sensor detects a dip in air quality, it will automatically turn on and purify the room again.

Though the unit is on the pricier end, it is one of the most effective air purifiers on the market and can do the work of three to four purifiers on its own. The manufacturer claims that it can cleanse the air in a space of up to 1,100 square feet, and we’ve yet to find a review that contradicts that claim. Additionally, Alen backs all of its products with a lifetime warranty.

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Like Alen, Blue Air’s products seem to top most “top air purifier” lists. Pure Blue Air features a 360-degree air intake, making it the ideal purifier for any room, and for positioning at any point throughout any room. The front features a metal cage that hides a three-part filtration system. The two pre-filters and final HEPA filter combat up to 99 percent of all contaminants, which is 1.3 percent more than most other air purifiers claim to be able to do. The unit’s colorful appearance contradicts its simplicity—the unit operates off of a single button.

The unit’s single button allows you to achieve one of three fan speeds, each designed for different sized spaces. The lowest fan speed is rated to cleanse an area of up to 400 square feet, the medium fan speed is best for up to 540 square feet and the highest fan speed is effective in spaces of up to 600 square feet.

The only real pitfall is the noise. Customers complain of the unit being too noisy, especially when set to the highest fan speed. That said, you can find the Pure Blue Air 211+ a steal when it comes to air purifiers.

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Oransi has a couple of things going for it. For one, the company’s filters were rated number one in a comprehensive study of air cleaners. Two, the company advertises this specific model as being the best for combatting symptoms that stem from allergies and mold. The Oransi Max HEPA filter can fight harmful contaminants in large spaces and create a virtually allergen-free home. Moreover, the carbon pre-filter works in conjunction with the main filter to trap 98 percent of large dust particles. The small, simple design of this unit provides for a sleek, discreet appearance.

The unit is a bit on the pricier end. However, it comes with a 10-year warranty, which is pretty good in terms of air purifier guarantees.

Customers complain of two main pitfalls of this unit: noise and odor. The unit emits an unpleasant smell in the first few minutes of operation, which seems to be a common complaint about air filters.

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Though this unit has ranked high on a lot of sites for the best air purifier for mold, it makes our list today for one main reason: it seems to be adept at trapping flu and cold particles during cold season. The system features 4-Plasma True and True HEPA AeraSafe technology that safely eliminates 99.97 percent of airborne contaminants, which, in addition to flu and cold germs, include mold spores and other irritants. The carbon pre-filter captures larger irritants such as pet dander.

This unit is one of the most versatile on the market, another reason it makes this list. It is effective in spaces of 300 to 600 square feet, which is pretty decent considering its low price. An indicator also lets you know when you need to order a new filter, which is nice because it ensures that you aren’t unwittingly breathing in dirty air.

The biggest complaints that customers have about this unit is that it is loud and slow. However, given that it’s one of the cheaper options and extremely versatile, we’d have to say that’s a pretty fair trade-off.

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As its name implies, the Germ Guardian AC4825 3-in-1 air purifier is best for combatting germs and bacteria. Thus, if you’re looking for a filtration system that does away with mold, this one is it. Like most units, this one cleanses the air of up to 99.97 percent of contaminants, with a special focus on allergens. Manufacturers advertise it as “perfect for allergy sufferers.” The unit features a HEPA air filtration system, as most modern air purifiers do, and has a CADR number of 100+. UV-C light technology works in conjunction with titanium dioxide to combat airborne germs, viruses, bacteria and yes, mold spores.

Advertisements claim that the unit is effective in small and medium-sized spaces. One cannot complain about the minimal coverage considering its affordable price. Additionally, a lot of customers enjoy the fact that the unit is lightweight and portable, which most of the more expensive, higher quality units cannot claim to be.

white air purifier

Best Air Purifier for Mold Buyer’s Guide

No matter which air purifier you opt for, you can count on spending a pretty penny on the unit and its maintenance, not to mention filter replacements. For this reason, it is crucial that you select an air purifier that you’re going to be happy with for years to come. If you want to find the best air purifier for mold for your needs, there are a few factors that you need to take into consideration:


Operating Costs

There are dozens of air purifiers on the market that cost less than $100, but you want to be wary about how much those units end up costing you in the long run. A lot of the cheaper options are not Energy Star Certified and can run up your energy bill significantly more than more energy efficient options. Moreover, the more expensive options come with filters that last up to five years, while the cheaper options’ filters may only last up to six months. Filters aren’t cheap and can cost anywhere from $30 to $90.



Noise is something that you cannot escape with most air purifiers no matter how much you spend on one. Even the pricier options have complaints from customers about noise. That said, if you’re someone who cannot sleep with even the slightest of noise in the room, you might want to look into a silent option or at least one that has a silent mode.


Air Exchange Rate

Look for a unit with high CADR numbers, as the higher the number, the more amount of air the unit can filter in a given minute. Units with higher CADR numbers are more energy efficient because they don’t have to work as hard as units with lower numbers.

Mold spores can significantly bring down your health, even if you don’t have an actual mold infestation. An air purifier can help reduce the amount of mold in your home and ensure that you breathe nothing but clean, healthy air. To find the best air purifier for mold, consider the advice and suggestions in this guide.

Ashlee Malley

Ashlee is a furniture expert but you can find her reading on the beach or hiking up a mountain.

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