Frequent Questions

Does EPA certify air cleaning devices?

According to the EPA Web site Ozone Generators that are Sold as Air Cleaners:

"There is a large body of written material on ozone and the use of ozone indoors. However, much of this material makes claims or draws conclusions without substantiation and sound science. In developing Ozone Generators that are Sold as Air Cleaners, the EPA reviewed a wide assortment of this literature, including information provided by a leading manufacturer of ozone generating devices. In keeping with EPA's policy of insuring that the information it provides is based on sound science, only peer reviewed, scientifically supported findings and conclusions were relied upon in developing this document.

Several brands of ozone generators have EPA establishment number on their packaging. This number helps EPA identify the specific facility that produces the product. The display of this number does not imply EPA endorsement or suggest in any way that EPA has found the product to be either safe or effective."

Please Note: EPA does not certify air cleaning devices. The Agency does not recommend air cleaning devices or manufacturers.

If you need information on specific devices or manufacturers, one resource you can consult is the Association of Home Appliance Manufacturers (AHAM) Exit (202) 872-5955, 

AHAM also provides information on air cleaners on their AHAM-Verifide Appliances Website Exit More information about this program is available on their About the Program Web page Exit

EPA-related publications and websites:

For further information or questions, you may also contact the EPA Office of Air and Radiation - Indoor Environments Division.

Regional and State Indoor Air Quality Contact Information is also available.



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