Air Cleaner Testing and Certification

This page last reviewed September 20, 2017

The Air Resources Board has adopted a regulation that establishes an ozone emission concentration standard, and requirements for certification, labeling and record keeping for indoor air cleaning devices that are introduced into commerce in California and used in occupied spaces. This page provides information on frequently asked questions, the certification application and instructions, and contact information for the certified laboratories.

Frequently Asked Questions (FAQ)

A Frequently Asked Questions (FAQ) sheet has been developed to address the topics relative to the certification process for devices covered by the Air Cleaner Regulation. It is available in English, Korean and Chinese (simplified and traditional).

Certification Application

The instructions and application form for the certification of indoor air cleaning devices are available. Please review the instructions carefully before filling out the form.

Application Form

  • Application Form, September 25, 2014 (English only, 1 MB). Minor revisions were made to clarify that only the testing laboratories may complete and/or edit Sections E and F of the application form. Completed application forms can now be saved using the latest version of Adobe Acrobat Reader.
  • Supplemental Form (see instructions for use of this form) (English only)


Each application submitted must have an application number. To obtain this number, or if you have any questions regarding the application form, the procedure described in the instructions or the translated documents, please email Please also email your application and materials to You may also send any questions to that email address as well, or you may email Hyung Joo Lee or call him at 916-323-1193 or you may email Victor Mendiola or call him at 916-323-1502.

Testing Laboratories

Contact information for laboratories approved to conduct testing of air cleaning devices for certification is shown below. Please contact them directly to request testing. Note that they will need an application form with the manufacturer and model information completed by the manufacturer or their representative in order to conduct the testing of the device.

UL LLC - Underwriters Laboratories Inc. (UL)

Tim Lassila, Staff Engineering Associate
2600 N.W. Lake Road
Camas, WA 98607
Telephone: 360-817-5735
Website: and

Intertek Testing Services

James Diescher, Operations Manager
Technical Lead - Safety
3933 US Route 11
Cortland, NY 13045

Telephone: 607-423-4905

Michael Hudon, Engineer - Energy Efficiency
3933 US Route 11
Cortland, NY 13045

Telephone: 607-758-6255

Canadian Standards Association (CSA)-International

Ana Restovic
178 Rexdale Blvd.
Toronto, ON L6Y 5N7

Telephone: 416-747-4133

How to Stay Updated

All information and updates will continue to be released through our listserv notice process and web page. If you are not on our air cleaner listserv, please join now at If you have questions that are not answered in the web updates or by information provided here, please send us an email at or call 916-445-0753.

Questions about this web page or the listserv can be directed to our Air Cleaners email or call us at 916-445-0753.