EPA Issues Final Technology Transitions Rule Under AIM Act

On October 5^th, EPA Administrator Michael Regan signed the Final Rule Technology Transitions authorized under the American Innovation and Manufacturing Act designed to phase down HFC use. The Final Rule restricts the use of higher-GWP HFCs in new aerosol, foam, and refrigeration, air conditioning, and heat pump (RACHP) products and equipment. EPA has set a maximum GWP limit on HFCs or HFC blends that can be used for new systems. Restrictions begin for many categories on January 1, 2025, with the latest restrictions going into place on January 1, 2028. It is important to note that this rule does not restrict the continued use of any existing products or RACHP systems. EPA has stated that allowing existing systems to continue to operate to the end of their useful life is important to ensuring a smooth transition in the phasedown of HFCs.

Provisions Specific to Cold Storage Warehouses

• Cold storage warehouses with 200 or more lb refrigerant charge, excluding high temperature side of cascade system – Global warming potential limit of 150
• Cold Storage warehouses with less than 200 lb refrigerant charge, or a high temperature side of cascade system – Global warming potential limit of 300
• Cold storage warehouses with high temperature side of cascade system – Global warming potential limit of 300
• The installation compliance date for cold storage warehouses will be January 1, 2026.

Additional information on the rule can be found below:

Text of Final Rule

Fact Sheet

FAQ

EPA Main Page on HFC Reduction