In July 2020, the Maryland Department of the Environment proposed regulations to phase out the use of certain HFCs in foam products, refrigeration, commercial air-conditioning, and aerosol propellants, recognizing the availability of environmentally preferable alternatives. MDE’s proposed regulations would reduce HFC emissions by adopting the stalled SNAP prohibitions for air conditioning and refrigeration equipment, aerosol propellants and foam uses. Under the proposed regulations, HFC emissions are estimated to be reduced annually by 25% by 2030, representing a total reduction of 4.95 metric tons of carbon dioxide equivalent over 10 years.