Technology Transitions HFC Restrictions by Sector

Beginning January 1, 2025, certain technologies may no longer use high global warming potential (GWP) hydrofluorocarbons (HFCs) or HFC blends. Prohibitions apply to the manufacture, distribution, sale, installation, import, and export of products containing restricted HFCs and on the installation of new systems that use restricted HFCs. More information on the sectors and subsectors, regulatory context, and ongoing rulemakings is available on the Technology Transitions Program website.

• Aerosols – Restricted Products by Sector and Subsector Table
• Foams – Restricted Products by Sector and Subsector Table
• Self-contained Refrigeration, Air Conditioning, and Heat Pumps – Restricted Products by Sector and Subsector Table
• Refrigeration, Air Conditioning, and Heat Pumps – Restricted Systems by Sector and Subsector Table

More information

• Final Rule Fact Sheet: Restrictions on the Use of HFCs in Certain Sectors – Find tables of restricted products for all sectors and subsectors

Aerosols – Restricted Products by Sector and Subsector Table*

Foams – Restricted Products by Sector and Subsector Table*

Self-contained Refrigeration, Air Conditioning, and Heat Pumps – Restricted Products by Sector and Subsector Table*

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• Subsector: Show All SubsectorsChillers (as a stand-alone product)Cold storage warehousesData centers, computer room air conditioning, and information technology equipment coolingHousehold refrigerators and freezersIndustrial process refrigeration (not using chillers)Motor vehicle air conditioningRefrigerated transportResidential dehumidifiersRetail food - refrigerated food processing and dispensing equipmentRetail food - refrigeration stand-alone unitsSelf-contained automatic commercial ice machinesStationary residential and light commercial air conditioning and heat pumps (e.g., window units, portable room air conditioning)Vending machines

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Refrigeration, Air Conditioning, and Heat Pumps – Restricted Systems by Sector and Subsector Table*

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• Subsector: Show All SubsectorsChillersCold storage warehousesData centers, computer room air conditioning, and information technology equipment coolingIce rinksIndustrial process refrigeration (not using chillers)Refrigerated transportRemote automatic commercial ice machinesRetail food - remote condensing unitsRetail food - remote refrigerated food processing and dispensing equipmentRetail food - supermarketsStationary air conditioning and heat pumps

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*Note: this is the Systems table, not Products

*These tables are for informational purposes only and should not be relied on for compliance purposes. Please refer to 40 CFR Part 84, Subpart B for full details.

1. Sale, distribution, and export of these products is prohibited three years after the manufacture and import compliance date.

2. See regulatory text for specific types of aerosol products subject to the later compliance date. Excludes metered dose inhalers using HFC-134a or HFC-227ea or defense sprays using HFC-134a as a propellant.

3. Includes blown foam, products incorporating blown foam, and pre-blended polyol products. Excludes composite structural preformed polyurethane foam for trailer use and for marine use.

4. New products only; does not apply to equipment that is operational during transport.

5. EPA is restricting the installation of new field-assembled systems. Components used to repair existing systems are not subject to these restrictions.

6. No installation compliance date for systems where all specified components were manufactured or imported prior to January 1, 2025. Refer to the Technology Transitions Reconsideration Rule for additional details. 

7. New systems with a GWP above 700 can be installed until January 1, 2027, so long as all components are manufactured or imported prior to January 1, 2026. New systems with a GWP above 700 can be installed until January 1, 2028, in buildings that were issued an approved building permit prior to October 5, 2023, as long as that permit approved the use of an HFC or blend containing an HFC in such a system, and all components used in that system are manufactured or imported prior to January 1, 2026 (refer to the Variable Refrigerant Flow Air Conditioning Final Rule for additional details).

8. Does not include chillers used in semiconductor manufacturing equipment with charge sizes of 100 pounds or less. Those restrictions are detailed in other rows in the table. Refer to the Technology Transitions Reconsideration Rule for additional details. 

9. Does not include refrigerated laboratory centrifuges and shakers. Those restrictions are detailed in another row in the table. Refer to the Technology Transitions Reconsideration Rule for additional details.  

10. For cold storage warehouses, an interim GWP limit of 700 applies on July 27, 2026. On January 1, 2032, the limit becomes either 150 or 300, depending on the charge size and configuration of the equipment. Refer to the Technology Transitions Reconsideration Rule for additional details. 

11. For supermarket systems, an interim GWP limit of 1,400 applies beginning January 1, 2027. On January 1, 2032, the limit becomes either 150 or 300, depending on the charge size and configuration of the equipment. Refer to the Technology Transitions Reconsideration Rule for additional details. 

12. For remote condensing units, an interim GWP limit of 1,400 applies on July 27, 2026. On January 1, 2032, the limit becomes either 150 or 300 depending on charge size and configuration of the equipment. Refer to the Technology Transitions Reconsideration Rule for additional details.