The short answer
What an Air Purifier Can Do
An air purifier equipped with a HEPA filter can trap particles as small as mold spores, which are typically 3 to 40 microns in size. Running one in a room may lower the number of spores circulating in the air, which can be helpful for people with allergies or asthma. The air purifier works most effectively when the room is closed off and the unit is sized for the square footage.
Keep in mind that an air purifier only filters the air that passes through it. Mold spores that are settled on surfaces or hidden inside walls, carpets, or insulation will not be removed. The device is a temporary aid, not a solution to an active mold problem. You still need to locate and eliminate the source of moisture that feeds the mold.
What It Cannot Do
An air purifier cannot kill mold spores or stop mold from growing. It also cannot remove mold from porous materials like drywall, wood, or fabric. If mold is already established, the air purifier may capture some spores, but the colony will keep releasing more until the growth is physically removed and the area is dried out.
Using an air purifier while ignoring a leak or high humidity is like putting a bandage on a wound without cleaning it. The mold will continue to spread, and the air purifier will only provide a false sense of security. You need to address the root cause, which is almost always excess moisture from a leak, flooding, or poor ventilation.
- Air purifiers do not remove mold from surfaces
- They do not stop mold from growing
- They do not fix the underlying moisture problem
- They do not replace proper cleaning and drying
- They may help reduce airborne spores temporarily
When an Air Purifier Helps
An air purifier can be useful after the mold has been cleaned and the moisture source has been fixed. It can help capture any remaining spores that are stirred up during cleaning or that drift from hidden areas. It is especially helpful in rooms where you spend a lot of time, like a bedroom or living room, to reduce your exposure to airborne spores.
If you have a mold allergy, an air purifier might reduce symptoms like sneezing or itchy eyes. However, you should still see a doctor if you feel unwell. The air purifier is a complement to, not a replacement for, professional mold remediation and moisture control.
How to Choose an Air Purifier for Mold
Look for a unit with a true HEPA filter, which is designed to capture particles as small as 0.3 microns. Check the Clean Air Delivery Rate (CADR) to make sure the unit is sized for the room. A higher CADR means more air is filtered per minute. Also, consider a model with a pre-filter to catch larger dust and debris, which can prolong the life of the HEPA filter.
Place the air purifier in the center of the room, away from walls and furniture, so air can circulate freely. Run it continuously, especially during the day when you are active and stirring up dust. Replace the filters according to the manufacturer's instructions, because a clogged filter will not work effectively.
The Real Solution for Mold
The only lasting way to deal with mold is to remove the moisture source. This means fixing leaks, drying out wet materials, and reducing indoor humidity. For example, if you have a water leak behind a wall, you need to locate the leak and dry the structural materials. An air purifier will not help if the mold is growing inside the wall cavity.
For significant mold growth, you may need to remove and replace porous materials like drywall or carpet. In some cases, you might need professional help. If you are dealing with a large area of mold, consider contacting a local water damage pro who can assess the situation and perform structural drying. If you live in Rogers, you can look into services like water damage inspection or structural drying and dehumidification.
- Fix any leaks or flooding promptly
- Dry wet materials within 24 to 48 hours
- Keep indoor humidity below 60 percent
- Clean hard surfaces with a mold-killing solution
- Remove and replace porous materials that are moldy
- Ventilate bathrooms and kitchens to reduce moisture
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Call Now (479) 370-1500Frequently asked questions
Can an air purifier remove mold spores from the air?
Yes, a HEPA air purifier can capture mold spores that are floating in the air. It can reduce the number of airborne spores, but it cannot remove spores that have settled on surfaces or that are growing inside walls. Use it as a supplement to cleaning and moisture control.
Will an air purifier prevent mold from growing?
No, an air purifier does not prevent mold growth. Mold grows in damp, humid conditions. To prevent mold, you need to control moisture levels in your home, fix leaks, and ensure proper ventilation. An air purifier only filters the air, not the surfaces where mold grows.
What is the right way to deal with mold in my home?
The right approach is to find and fix the source of moisture, dry out affected areas, and clean or remove moldy materials. For small areas, you can scrub with soap and water. For larger infestations, you may need professional help. An air purifier can help with airborne spores but is not a cure.