Comparing air purifiers to control mold can become a daunting task. For over 30 years, I've been involved with air purifiers and have helped make recommendations for thousands of people. The following information is designed to help you make a better choice to find the right air purifier for you.
This means that the Austin Air, IQAIR, Honeywell (and other primarily HEPA air purifiers) will not do a good job. It also means there may be a growing problem inside the HEPA filter itself as mold can grow there. To kill mold you have to go out into the room where it exists
Common molds include Alternaria, Aspergillus Chaetomium, Cladosporium, Fusarium, Mucor, Penicillium and Stachybotrys. Of course they love to grow in places that are warm, damp, and dark. Mold itself is not the culprit that trigger allergic or asthmatic reactions, instead it's usually the spores (seeds) floating through the air that can cause sneezing, coughing, wheezing, and runny noses when inhaled. This in turn threatens the immune system for many people.
We'll discuss the 4 types that do help after the video.
NOTICE: IF YOU HAVE A MOLD PROBLEM INSIDE WALLS, UNDER RUGS, OR SHEETROCK YOU CAN'T SIMPLY STICK AN AIR PURIFIER IN THERE AND EXPECT IT TO GO AWAY. YOU'RE GOING TO HAVE TO REPLACE THE SHEETROCK IN MOST CASES. IT CAN HOWEVER REDUCE THE HEALTH RISK IN THE MEANTIME, AND PREVENT IT FROM SPREADING....
Ozone. By far the most effective at rapid mold and mildew removal Ozone will go out into a room, and onto walls, where it will kill it on contact. The downside is that Ozone in high levels will also irritate lungs. So if you have an ongoing problem you might get an air purifier to "treat" a room. In other words turn the Ozone up and leave the room closed. Turn it off and let it "air out" for several hours. Ozone tends to dissipate very fast. (Watch the video for information about Ozone - it's pro's and Con's)
Negative Ionizers. Negative ions will kill mold on walls and in rooms. Not as fast or effective as Ozone on the other hand it is actually good for lung problems. Negative ions can increase energy and mood according to Russian research.
Ultraviolet Light Somewhat effective at mold it kills the spores as they passes thorough the air purifier. I like the combination of UV and negative ions as one kills the spores while the other goes out into the room where mold is spreading. It also helps keep mold from growing inside the HEPA filter
Titanium Dioxide (Tio2) - This nanotechnology enhances Ultraviolet light up to 1000x according to my scientist friend, and hence helps UV do a much stronger job on Mold and Mildew. It needs UV light to shine on it.
However if the problem is small, or contained pretty well, then the mold air purifier may be all you need. If it's a wet basement with mildewy smells an air purifier with Neg. Ions, and UV /Tio2 will kill the smell and mildew but you may need a de-humidifier to keep the buildup at bay.
If I use an Ozone Generator Air Purifier to kill mold - I'll crank it up and let it run overnight. Then air it out for several hours before spending time in the room. These units can be expensive (there are a few inexpensive ones around too) so maybe you can borrow one.
If I use a Negative Ion/UV/Tio2 Machine - I'll crank it up and let it run on high for a few days then reassess how the room is doing.
Here's an affordable air purifier for mold which also handles dust and pollen quite well.
The affordable, yet powerful Airpodcleaner MT3C is a 6-stage air purifier which includes HEPA, On/Off Ozone, Negative Ion for mold killing plus its very effective against pollen, dust, odor with Carbon and a pre-filter. It also includes UV light for viruses and germs. It will cover 500 square feet.