In 2017, the US Court of Appeals ruled that the EPA did not have the authority to reduce hydroflourocarbons, or HFCs, through the Clean Air Act. This section of the Clean Air Act removed certain high GWP refrigerants, like 404a, 410a, 134a, and 407a, from the EPA’s SNAP list for use in certain new products.
However, this week the California Air and Resources Board (CARB) adopted the EPA’s previously proposed SNAP rules. California says they are working to reduce their emissions to mandated state and federal levels. Under a senate bill authored by Ricardo Lara, the Lara Bill, California will reduce its HFC emissions by 40% below 2013 levels by 2030. Due to the US Court of Appeals overruling the SNAP rules California passed its own regulations to stay in line with their goals.