A review by the EPA looked at the most common types of air filters and found that using a combination of HEPA and carbon (like the Austin Air filters) is the most effective.
Dangerous, Unapproved Air Filtration Technologies
ESP and Ionizers
What is ionizing technology and why did the EPA warn us not to use it?
UV and UVGI
What is UV and UVGI and why doesn't the EPA recommend it?
PCO and Plasma
What is PCO and Plasma and what cautions did the EPA issue?
The Top 6
The top 6 things to look for when choosing an air purifier for classrooms.
Competitors
How do Austin Air purifiers stack up against our competitors?
EPA Summary
Browse the EPA summary of the best (and worst) filter technologies.
Not All Are Equal
Not all air purifiers are created equal! Here's how the technologies differ.