California’s Air Cleaner Regulation (AB 2276)
In 2008, CARB enacted an air cleaner regulation to limit the ozone emissions from indoor air cleaning devices. The regulation requires all indoor air cleaners sold in California to be certified by CARB. To be certified, all air cleaners must be tested for electrical safety. Electronic air cleaners must also be tested for ozone emissions and meet an ozone emission concentration limit of 0.050 parts per million (50 ppb).