Report Highlights

Low GWP Refrigerants in the U.S.: Market Overview

U.S. demand for low GWP refrigerants reached an estimated USD 2.14 billion in 2024, driven by hydrofluorocarbon (HFC) phasedown obligations under the American Innovation and Manufacturing Act of 2020 (AIM Act, Division S of Public Law 116-260). Hydrofluoroolefins such as HFO-1234yf, alongside R-32 and R-454B blends, now dominate new equipment charges. Chemours and Honeywell lead production, while the market's form reflects federal allowance design more than private demand.

Government has been the dominant force in setting the market's timing and structure, whereas the private sector has led on chemistry, capacity, and system design. EPA's Stratospheric Protection Division allocates HFC production and consumption allowances under 40 CFR Part 84, and the Internal Revenue Code Section 4681 excise tax raises the cost of virgin HFCs. Arkema and Daikin have led on fluorochemical capacity and HVAC equipment engineering.

Policy-Driven Growth in U.S. Low GWP Refrigerants

The AIM Act directs EPA to cut HFC consumption by 40 percent in 2024, 70 percent in 2029, and 85 percent by 2036 relative to baseline. Scarcity-based allowance pricing raises the cost of legacy HFCs such as R-410A, pushing manufacturers toward HFO and A2L blends. The EPA Technology Transitions Rule, finalized in October 2023, then sets a GWP limit of 700 for new residential and light commercial air conditioning and heat pumps, converting allowance scarcity into mandatory product redesign.

The Inflation Reduction Act of 2022 adds demand-side incentives through Section 25C of the Internal Revenue Code, which provides a tax credit of up to USD 2,000 annually for qualifying heat pump installations. Home Efficiency Rebates under IRA Section 50122, administered by the Department of Energy, channel USD 8.8 billion through state energy offices. These subsidies lower installed cost of R-454B and R-32 systems, increasing installation volumes and therefore low GWP refrigerant charges per unit.

Regulatory Barriers and Compliance Costs

New refrigerants require EPA acceptability under the Significant New Alternatives Policy (SNAP) program, established under Section 612 of the Clean Air Act, before they can be sold for a specific end use. SNAP reviews typically take between six and 18 months, and each listing carries conditions that restrict charge size and system types. Flammable A2L refrigerants must also conform to UL 60335-2-40 and ASHRAE Standard 15, adding certification work that manufacturers report consumes several months of engineering time per product platform.

Section 608 of the Clean Air Act requires EPA-certified technicians and leak repair for appliances above specified charge thresholds, creating a training burden that extends to distributors. Annual reporting under the Greenhouse Gas Reporting Program (40 CFR Part 98, Subpart OO) adds compliance costs for suppliers of industrial greenhouse gases. California Air Resources Board regulations impose stricter leak-repair and recordkeeping requirements than federal rules, raising costs for manufacturers selling across multiple states.

Policy-Created Opportunities in the U.S. Refrigerant Transition

Heat pump demand under the Home Efficiency Rebates program creates a procurement pipeline for R-454B and R-32 suppliers, as state energy offices distribute rebate funds through contractor networks. Manufacturers that certify A2L products under UL 60335-2-40 early will capture share in the installation window that the Technology Transitions Rule opens. Suppliers with documented SNAP listings for multiple end uses will face fewer qualification delays during that window.

Refrigerant reclamation represents a second opportunity. The AIM Act treats reclaimed HFCs as a supply stream distinct from newly produced material, which gives certified reclaim operators access to recovered R-410A volumes as service activity rises. Firms operating reclaim facilities that serve the Section 608 service channel can capture margin while virgin supply remains allowance-constrained.

Market at a Glance

Leading Market Participants

• Chemours
• Honeywell International
• Arkema
• Daikin Industries
• Koura
• Carrier Global
• Trane Technologies
• Lennox International
• Emerson Climate Technologies
• Linde

Regulatory and Policy Environment

The AIM Act (Division S of Public Law 116-260) provides the primary legal framework, with EPA's Office of Air and Radiation administering allowance allocation under 40 CFR Part 84. Key compliance requirements include holding allowances for HFC production and import, obtaining SNAP listing for substitutes under Clean Air Act Section 612, and meeting Technology Transitions GWP limits for residential and light commercial systems from January 1, 2025. Scheduled changes include the 70 percent consumption reduction in 2029, which will tighten allowance availability for importers.

Compared with regional peers, the U.S. relies on tradable allowances, whereas the EU F-gas Regulation (EU) 2024/573 combines a phasedown with sector-specific bans and a 2050 phaseout objective. Canada's Federal Halocarbon Regulations, 2017 align with Kigali-era phasedown commitments while requiring separate import permits. The U.S. has not ratified the Kigali Amendment, so domestic obligations rest solely on the AIM Act, which offers greater pricing flexibility but less granular end-use prohibition than EU rules.

Long-Term Policy Outlook for U.S. Low GWP Refrigerants

By 2032, the AIM Act phasedown will hold HFC supply at 30 percent of baseline, leaving allowance scarcity as the dominant pricing force before the 2036 target. Further tightening of Technology Transitions limits is expected to move residential and commercial GWP thresholds lower for selected applications. Equipment makers will therefore redesign platforms around flammable A2L and natural refrigerant chemistries.

The per- and polyfluoroalkyl substances (PFAS) track is the largest unresolved risk. EPA's TSCA Section 8(a)(7) PFAS reporting rule captures HFO-1234yf under the OECD PFAS definition, and the EU's proposed universal PFAS restriction under REACH would affect HFO supply chains. Companies with diversified portfolios that include R-290 propane and R-744 carbon dioxide will gain share relative to single-chemistry producers.