The Best Air Purifiers for Mold and Mildew Removal


When you’re looking to combat mold and mildew in the house, you need a specific type of air purifier and that’s exactly what we’re bringing you today.

We spent a great deal of time researching what works and what doesn’t when it comes to seeing off not just mold but a range of other harmful and irritating airborne pathogens.

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If you’re looking for clean air in your home, you’re in safe hands with any of the units we’ve reviewed here today.

Before we explore how you can effectively remove mold and mildew from your air indoors, here’s a snapshot of 4 of the strongest models we looked at by category…

Our Pick with Ionizer: Coway Mighty Air Purifier with True HEPA (361 square feet)

The Coway Mighty is our overall favorite air purifier coming with an onboard ionizer. You’ll get the true HEPA filtration you need to eliminate mold spores and mildew along with the ability to charge the air in your home with negative ions so you cut down on the number of particles floating around. For a first-class defense against polluted air in mid-sized homes, the Coway Mighty lives up to its name.

Runner-Up with Ionizer: Silver Onyx True HEPA Air Purifier for Allergies and Mold (500 square feet)

A lesser-known name, the Silver Onyx is another superb purification system that harnesses a negative ionizer along with a true HEPA medium so you can relax knowing no mold, mildew, dust or dander will remain in the air to irritate you. This purifier works well if you’re suffering from allergies or asthma, too.

Upgrade Pick: RabbitAir MinusA2 HEPA Air Purifier (700 square feet)

For anyone who has a more fluid budget, the classic RabbitAir MinusA2 is as good a purifier as you’re likely to find. 6-stage filtration takes care of all odors and contaminants that can spoil the air quality in your precious home. Whether you choose to mount this air purifier on the wall or leave it freestanding, you’ll be able to purify the air in large spaces up to 700 square feet with complete precision.

Best Budget: Pure Enrichment PureZone 3-in-1 True HEPA Air Purifier (200 square feet)

Bargain hunters will appreciate the PureZone 3-in-1 purifier from Pure Enrichment but you won’t be stiffed on the performance front. The true HEPA filtration along with a powerful UV-C light means mold, mildew, dust and dander will be taken systematically out of commission. For a top-tier purifier on a budget, the PureZone makes perfect sense.

So, what type of filtration do you need when you’re looking to eliminate mold and mildew, then?

I. What Filters Do You Need for Removing Mold and Mildew?


Mold is not just unsightly and unpleasant but can actually bring about negative effects health-wise, too.

According to the CDC (Centers for Disease Control and Prevention), mold can bring about irritation to the airways, sneezing and sniffling along with itchy and reddened eyes.

Mold outside plays a valuable role in the ecosystem but when mold spores make their way inside your home, their presence is not so welcome. As well as ruining the look of your beloved home, mold can lead to the health issues above. What can you do about this menace, then?

Luckily, finding the right air purifier for dealing with mold or mildew is actually not that complex. It all starts with a HEPA-rated medium but what is that and why should you care?

HEPA Filtration

A true high-efficiency particulate air (HEPA) filter has been rigorously lab-tested to meet the most exacting of standards.

In order to qualify as a true HEPA filter, the medium must be capable of trapping 99.97% of all airborne particles down to a size of 0.3 microns. This is far too small for you to see with the naked eye but you can breathe these particles in.

Mold spores are substantially bigger than this so they will be effectively trapped by the HEPA filter as a first line of defense.

One drawback of a HEPA filter for mold removal is that mold spores can start growing on the surface of the filter. If you’re using the filter expressly to guard against mold, you should ensure it’s frequently cleaned and frequently replaced to help mitigate this.

So far, so good but how else can you fight against mold?

Add an Activated Carbon Filter

While an activated carbon medium is not designed to remove mold spores, it serves another purpose…

Neutralizing and deodorizing the nasty damp smells that mold can bring about when it invades your home.

Used a standalone strategy to fight mold, activated carbon will be ineffective. When used in tandem with a solid HEPA-rated medium, though, you’ll find that mold and mildew spores will be trapped while the nasty odors will be removed at the same time.

Beyond this, when you’re using a combination of HEPA filters and activated carbon filters, you’ll also rid your home of dust, pet dander, volatile organic compounds, household chemicals and pollen. You’ll get a complete package so you can take out all those irritating pathogens in one hit.

II. Other Factors to Consider When Fighting Mold and Mildew

The other main element you should factor in is a variable speed fan but why is this particularly important for dealing with mold?

Mold grows at a variable rate. If the weather is cold and humid, spores grow more rapidly so you can fine-tune the speed of your purifier accordingly.

Conversely, when the mercury starts rising, you can take advantage of natural ventilation and dial back the pace of your purifier to more effectively deal with those menacing mold spores.

There’s one other contentious issue that polarizes opinion and that’s UV lights and negative ionizers. Are they safe and should you rely on this method to attack mold in your home?

III. All About Ionizers and UV-C Light: Should You Use It and Is It Safe?

Ionizers come onboard with many air purifiers and they can be effective but they come with some drawbacks.

An ionizer works by sending negatively charged ions into the atmosphere. These ions can then more readily stick to any positively charged particles like mold spores. The combined particles are then too heavy to continue floating around so they end up falling to the ground.

What’s happening here is only a partial success. The particles will certainly be removed from the air but they won’t have been destroyed.

Using a UV-C light on a purifier can step things up a notch but this comes with the disadvantage of producing trace amounts of ozone. Since breathing in ozone, just like breathing in negative ions, can be harmful, how can you counter this?

The answer is simple and all you need to do is run the purifier when you’re not at home so you can reap the benefits without breathing in air that might do more harm than good.

What areas should you play closest attention to if you suspect mold in the house?

IV. Where Mold Grows Most Frequently

Mold can spread throughout the house but is most commonly found behind the following areas:

  • Basement Cellars
  • Carpeting
  • Drywall
  • Fridges
  • Leaky windows
  • Sinks
  • Toilets
  • Ventilation ducts

You should look at any damp areas where mold spores can proliferate and ensure you position your air purifier so it can deal with these damp zones effectively.

How else, apart from using an air purifier designed for the purpose, can you combat mold in the house?

V. How to Prevent Mold From Developing

Once you’ve got an air purifier with HEPA filtration, a carbon activated filter and an ionizer if you decide this makes sense for you, follow these steps to minimize the chance of mold ruining your house and your health.

  • Ventilation: Both mold and mildew need moisture in order to thrive and grow. If your house has high levels of humidity, this presents both with the perfect environment to take root. Make sure that your home is well ventilated and let in plenty of air to combat this. How about if this isn’t quite enough, though?
  • Use a Dehumidifier: If dampness perpetuates even when you’re opening the windows and letting in air, you might want to consider investing in a dehumidifier to regulate humidity levels. A basement is a classic breeding ground for mold and mildew so don’t overlook this space in your house. Humidity levels could often use a helping hand and you don’t need to spend a fortune to get a serviceable dehumidifier. Consider this an investment not an expense
  • Keep the Bathrooms and Kitchens Spotless: Aside from the basement, the bathroom and kitchen are the rooms where mold and mildew are most likely to break out. Focusing in particular on any places that get damp – we’re thinking toilets, sinks, bathtubs and fridges – make sure you stay on top of cleaning in these areas and carry out a thorough deep clean on a regular basis
  • Regulate Temperature: Mold rarely grows if temperatures are less than 70 degrees Fahrenheit. If necessary, use air conditioning to keep the temperature within a range that mold will find it difficult to prosper
  • Check Windows Closely: Another weak point in the home for mold is leaky windows. Look closely at all windows to make sure there’s no breach and check that mold hasn’t already set in. Seal any leaks and keep the windows closely monitored
  • Maintain Dry Surfaces Throughout The House: As we mentioned, mold needs moisture. Take the time to keep all surfaces dry and you’ll deprive mold and mildew of the micro-climate it needs to start growing.

Apply all of these tips alongside effective air purification and there’s no excuse to tolerate mold in your house.


With those basics sketched in, it’s time for the main event. Here are 10 of the finest air purifiers that remove far more than just mold and mildew to leave the air in your house spotless and fragrant year-round…

VI. Top 10 Best Air Purifiers for Mold and Mildew Removal

1. Our Pick with Ionizer: Coway Mighty Air Purifier with True HEPA (361 square feet)


If you’re looking for highly effective air purification to help you eliminate the menace of mold in your home, it needs to include true HEPA filtration. That’s in place on the Coway Mighty but what else makes this purifier so great?

The ionizer onboard kicks in optionally at the final stage to blitz any remaining mold and dust spores not taken out during the earlier stages of 4-tiered filtration. What happens before that?

A washable pre-filter deals with the larger debris while the carbon-activated deodorizing medium helps bring reduce unpleasant smells while seeing off VOCs and chemicals. The true HEPA filter gets rid of 99.97% of all particles down to a size of 0.3 microns making light work of fine dust, allergens and mold. Activating the optional Vital Ion system to round out diminishes the volume of particles remaining airborne through inducing an electrochemical reaction.

The nifty indicator lets you know when filters need changing removing guesswork from the equation.

The timer allows you to schedule the ionizer to kick in when you’re not at home so you can get the benefit with any potential harmful side effects of breathing in ionized air.

With auto mode, simply kick back and let the purifier optimize settings dependent on the air quality. An LED indicator lets you see the state of play at a glance.

2. Runner-Up with Ionizer: Silver Onyx True HEPA Air Purifier for Allergies and Mold (500 square feet)


A close runner-up also packing an ionizer is the pocket-friendly Silver Onyx, also tailor-made for fighting back against mold in your home.

The true HEPA H13 charcoal filter is one of 5 stages of powerful filtration to attack all airborne contaminants and pathogens in your house. Along with the activated carbon HEPA medium and a combination filter, you’ll also benefit from an ion generator and a UV-C light. Before this, a pre-filter takes all the larger particles and debris out of the equation. This prolongs filter life for the more fragile media that follow.

Once the HEPA filter has dispatched the tiniest particles down to a minute 0.3 microns, the onboard ionizer and UV sanitizer hit hard to eliminate mold along with any other germs and harmful bacteria spoiling your indoor air quality.

The deodorizing activating carbon ensures any smells lingering from pets or cooking are history, too.

Occupying a remarkably small footprint while packing a heavy punch, this cost-effective multi-purpose air purifier is a powerful weapon in your artillery if you fancy kicking mold to the curb.

3. Upgrade Pick: RabbitAir MinusA2 HEPA Air Purifier (700 square feet)


If you’ve got deeper pockets and you’re prepared to invest heavily in an assault against mold in your home, there’s no better choice than the classic RabbitAir MinusA2. What makes this purifier stand out in a glutted market, though?

Put simply, the class-leading 6 stages of filtration covering you against pretty much anything soiling the air in your house. Here’s what you’ll get:

  1. Pre-Filter: This is washable and permanent and works to trap all the larger particles
  2. Medium Filter: With the medium filter, all particles larger than 1 micron are blocked. This included mold, dander from your pets and lingering pollen in the air
  3. BioGS HEPA Filter: 99.97% of all the tiniest airborne particles down to 0.03 microns are taken care of by the potent BioGS HEPA filter meaning any allergy sufferers are in safe hands
  4. Customized Mold Filter: You can choose from a range of customized filters at this stage including a dedicated mold one tailor-made for your purposes
  5. Activated Carbon Filter: Coated thickly with granular activated carbon, you’ll see off any nasty smells at this stage
  6. Negative Ion Generator: By producing beneficial negative ions, your air will be cleaner than ever before and blissfully mold-free

Ideal for spaces up to 700 square feet, you can leave the MinusA2 freestanding or mount it on the wall for the last word in mold removal twenty-first century style.

4. Best Budget: Pure Enrichment PureZone 3-in-1 True HEPA Air Purifier (200 square feet)


What do you do if you want an air purifier capable of capturing mold but you’re working to a tight budget? Well, the PureZone from Pure Enrichment is the obvious solution.

The true HEPA filter is a potent line of defense against allergens, mold and those tiny airborne contaminants invisible to the naked eye.

More debris, germs and bacteria are decimated thanks to the UV-C light so you can kiss goodbye to those harmful microorganisms.

The timer allows you to program in auto shut-off after 2, 4 or 8 hours. This is a nice safety touch and also helps to keep those power bills down.

Rated at just 30 decibels, this purifier makes a neat fit in a bedroom and you won’t find your sleep disrupted in the quest for clean air.

Crowned with a dependable 5-year warranty, you can’t ask for much more in this price range. Customer support is responsive and available around the clock. Check out the PureZone today and you won’t be disappointed.

5. Alen BreatheSmart FIT50 Air Purifier for Mold, Dust and Allergies (900 square feet)


Alen makes a broad and deep range of air purifiers and the BreatheSmart FIT50 is the jewel in the crown. Ideal for large spaces up to 900 square feet, this makes a great move even if you’ve got a sprawling home.

With the air cleaned in large spaces twice hourly, you’ll benefit from WhisperMax technology so this performance is achieved without making too much noise.

The HEPA-Silver filter has an antimicrobial coating overlaid and also comes packing a full pound of activated carbon. The filter is specifically designed to combat mold, too.

LaserSmart tech baked in means the tiniest particles are sucked in and captured so you can breathe easily even if you suffer from allergies or asthma.

Alongside all this pioneering tech and hard-hitting purification, the BreatheSmart looks great into the bargain. Choose from 14 brightly colored panels to match your appliance to your décor.

The unbeatable and no-quibbles lifetime guarantee shows the confidence Alen places in this purifier and, while it’s not particularly cheap, you’ll consider it a solid investment rather than a painful expense. If you can afford it, check out the BreatheSmart at your earliest convenience.

6. Austin Air HealthMate Standard Air Purifier (1500 square feet)


If you have a huge house and you’re hunting for a highly capable workhorse to purify all the air in that space efficiently, Austin Air’s HealthMate is a must.

The medical-grade true HEPA medium ensures that the most minute particles floating through the air are safely wicked away. This works brilliantly to remove mold along with dust, pollen and other pathogens that can inflame allergies and impair your indoor air quality.

Activated carbon and zeolite filtration add to a powerful arsenal and ensure your air smells as fresh as it is clean.

The powerful fan comes with a trio of speed settings with air drawn in through a full 360 degrees. Once inside the unit, the soiled air passes through 4 stages of filtration so it emerges crystal clean.

If you struggle with asthma, allergies or any kind of sensitivities, investing in the HealthMate could help reduce attacks of runny noses, sneezing and general irritation.

Running ultra-quietly, you can pop this purifier in your bedroom and, if you do, you might even notice a reduction in snoring since you’ll be breathing clean air stripped of mold, dander and all contaminants.

Finished in a commanding black, this purifier would slot neatly into a minimal design scheme or a more traditional home.

7. Honeywell True HEPA Air Purifier (465 square feet)


Honeywell is an industry legend in the air purifier space and this true HEPA model delivers fully on their hard-won reputation.

Another lean and stark black-on-black appliance, this purifier is certainly not a case of form over function, though.

Perfect for mid-sized rooms up to 465 square feet, 3 cleaning levels along with a dedicated Turbo mode ensure that the air is sluiced sparkling clean while stripped of mold, pollen, dander and any lingering smells. The air is cleaned and circulated 5 times an hour which is class-leading performance.

Mold spores are sized from 3 to 40 microns so the filtration in place here is more than fit to take them out of commission.

Activated carbon is in place so you won’t get any nasty residual smells from smoking, pets or cooking either.

The pre-filter needs changing every 3 months or so while the HEPA filter has a rock-solid 1-year lifespan. Changing filters is straightforward and you won’t need to go diving for your toolbox.

If you’re looking to take out mold along with an array of other pollutants contaminating the air in your home, this true HEPA purifier from Honeywell deserves a place on your shortlist.

8. Vornado AC350 Air Purifier (220 square feet)


The Vornado AC350 is a potent air purifier at a highly affordable price-point but is it any good?

In a word, yes! When you’re looking to attack mold in your home head-on, true HEPA filtration is essential. This medium traps all particles down to a size of 0.3 microns, far too small to see with the naked eye, and mold spores are far larger than this so you’re all covered. A filter indicator lets you know when it’s time to replace the media.

The carbon filter works well to neutralize and deodorize those nasty household odors from animals, smokers in the house or cooking.

The radial blower in place is highly effective and capable of dealing with all the air in spaces up to 220 square feet. This is a neat fit for smaller houses and apartments. If you’re looking to purify the atmosphere in a larger house, you’ll end up burdening this unit.

You’ll get 3 speed settings and control is seamless with a user-friendly push-button interface.

A generous 5-year limited warranty completes a winning line-up from Vornado.

9. Oransi Finn HEPA Air Purifier for Mold and Allergies (200 square feet)


As we near the end of our quest for the best air purifier for mold removal, a dark horse entry from Oransi with the Finn HEPA unit.

The HEPA filter is rated to give you at least 2 years of service which puts most of the competition to shame. You’ll also get a couple of pre-filters bundled giving you even greater value.

The pre-filter can eliminate larger particles along with unpleasant smells thanks to the standard activated carbon in place. There’s also a UV light that can go the extra mile when you’re looking to fight back against mold in your home. You can flick this negative ionizer on and off so, if you’re concerned about the potentially harmful effects of UV light and the ozone created, allow this to run when you’re out of the house.

Running practically whisper-quiet, this unit works well as a bedroom companion and ensures you can get an even better night’s sleep with the air purified wonderfully.

The interface is a cinch to navigate and set-up is straightforward, too. Get going right out the box and start enjoying immaculate air in your home with no traces of mold left behind.

Crowned by a 10-year warranty, you can buy in complete confidence.

10. VEVA 8000 Elite Pro Air Purifier (325 square feet)


Last up in our curated list of the most effective air purifiers for mold removal is the VEVA 8000 Elite Pro capable of cleaning spaces up to 325 square feet fuss-free.

The HEPA medium gets rid of 99.97% of particles down to the microscopic size of 0.3 microns. This safely accounts for any mold spores in your home as well as dust, dander, pollen and those other irritating airborne pathogens that can inflame allergies and irritate your airways.

You won’t get any negative ions or ozone kicked out from this unit in pursuit of purification so you can rest easy if you want to remove mold without suffering the potential downside of an ionizer.

You can vary the fan from a super-quiet setting right through to a louder Turbo mode so you can tailor purification to suit your needs and dial down the noise level if you’re trying to sleep.

If you remove the front panel, the unit automatically powers down so if you’ve got inquisitive kids in the house, you won’t put them in any danger if their fingers go wandering.

For a complete defense against mold, dust, pollen and household chemicals along with unpleasant odors, you won’t be sorry you opted for the Elite Pro and it comes very keenly priced, too.

VII. Conclusion

We hope by now you’ve seen that finding the best air purifier for mold removal is a pretty simple job.

As long as you have true HEPA filtration in place, you can account for those mold spores and ensure they’re trapped inside the purifier. Do you own diligence on negative ionizers and decide whether or not you’d like this additional line of defense. If you do opt for this type of ultraviolet attack on mold spores and other pathogens, you’d be well advised to run the ionizer when you’re out of the house. That way, you can return to find the air fresh and clean and you won’t run the risk of breathing in any ozone.

Drop us a line any time as we love to hear from our readers. Don’t forget too bookmark our site here at the PrinceLA, too. Come back any time you need some guidance on any products for your home and garden. We refresh our content several times weekly and we’ve got something special lined up for you next week so come back soon!

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