Consumers' Air Cleaner Portal

This page last reviewed January 24, 2019

image of air cleaners

Not all air-cleaning devices are appropriate for home use; some can be harmful to human health. Ozone generators, which are air cleaners that intentionally produce ozone, should not be used in the home. Such devices can produce levels of ozone several times higher than health-based standards set for ozone. Ozone is a gas that can cause health problems, including respiratory tract irritation and inflammation, serious breathing difficulty including asthma, and permanent lung damage.

Links to information that can help you select a safe and effective air cleaner are provided below.

California Certified Air Cleaners

sample label

In response to Assembly Bill 2276 (2006, Pavley), the ARB adopted an air cleaner regulation to limit the ozone emissions from indoor air cleaning devices. For information on the regulation, see our fact sheet on the regulation.

All air cleaners sold in California must be certified by ARB. Some manufacturers have submitted test results and obtained ARB certification of their air cleaning devices as required under the regulation. Approved air cleaners are listed at California Certified Air Cleaning Devices, which is updated periodically. Approved air cleaners must also show a label on the packaging similar to the sample label shown on this web page. Certification is based on the devices' low ozone emissions and electrical safety.

In addition to ARB certification, there are other factors to consider in selecting a suitable air cleaner, so please check both the certified list and the information in the sections below entitled "How to Select a Safe and Effective Air Cleaner" and "Air Cleaners To Avoid" to make the best selection for your needs.

How to Select a Safe and Effective Air Cleaner

Air Cleaners to Avoid

Related ARB Air Cleaner Information

Other Sources of Air Cleaner Information

If you need further assistance after reviewing these links, please call us at 916-445-0753. Subscribe to a listserv for future activities related to indoor air quality.