California Air Resources Board

California’s State legislature adopted Senate Bill (SB) 1206 in September 2022. SB 1206 prohibits a person from offering for sale or distribution, or otherwise entering into commerce in the state, bulk hydrofluorocarbons or bulk blends containing hydrofluorocarbons (HFCs) that exceed a specified global warming potential limit beginning January 1^st, 2025.  HFCs are greenhouse gases with potent climate impacts used primarily in the cooling sector for refrigeration, air conditioning and heat pumps, as well as in foams, aerosols, solvents, and fire suppression. 

SB 1206 allows the use of reclaimed HFCs to promote better recovery of HFCs from equipment during operation and at the end of life, thereby preventing emissions from high-GWP HFCs from millions of installed units and to prevent stranding existing equipment still using high-GWP HFCs. 

California's State legislature adopted Assembly Bill (AB) 663 in October 2025. AB 663 added a temporary exemption for HFCs exclusively used in very low temperature refrigeration or cooling applications designed to maintained temperatures below -58 degrees Fahrenheit (-50 degrees Celsius) until January 1, 2028. 

Sale Compliance Schedule of Bulk HFCs

SB 1206 and AB 663 prohibit the sale of bulk (or newly produced) HFCs as defined in the bill language, in accordance with the schedule below:

• Greater than 2,200 GWP starting 1/1/2025
• Greater than 1,500 GWP starting 1/1/2030
• Greater than 750 GWP starting 1/1/2033

SB 1206 and AB 663 does allow for the sale of any reclaimed HFC, as defined in the bill language. In essence, reclaim sales of all HFCs are allowed as long as the HFCs are from a United States Environmental Protection Agency certified reclaimer.  

Affected Sources

SB 1206 and AB 663 affects all sources that use HFCs which include foams, aerosols, solvents, fire suppressants, refrigeration systems, air conditioning and heat pumps.

As an example:

• R-404A and R-507, commonly used in refrigeration systems would be prohibited as of January 1^st, 2025.
• R-410A commonly used in air conditioning systems would be prohibited as of January 1^st, 2030.
• R-448A and R-134a, commonly used in refrigeration systems and air conditioning would be prohibited as of January 1^st, 2033.

State Owned or Operated Stationary Equipment Requirements

Beginning January 1^st, 2025, HFCs with a GWP greater than 750 that are not reclaimed, shall not be used to replenish any leaks or otherwise service stationary equipment owned or operated by the state.

HFC Assessment

SB 1206 directs CARB to post an assessment on its internet website by January 1^st, 2025, specifying how to transition the state’s economy, by sector, away from HFCs and to ultra-low GWP or no-GWP alternatives no later than 2035 through maximizing recovery and reclamation and increasing adoption of new low and ultra-low GWP alternative refrigerants.

For the full SB 1206 bill language please click here.

For the full AB 663 bill language please click here.