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AB 663

Hydrofluorocarbon gases: sale and distribution prohibition: exemptions.

2025-2026 Regular Session Introduced by Tina McKinnor

California prohibits hydrofluorocarbon gas sales to phase down potent greenhouse gas emissions, with exemptions for essential uses where alternatives unavailable.

Chaptered by Secretary of State - Chapter 161, Statutes of 2025.
#hydrofluorocarbongases #exemptions #saleanddistributionprohibition
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Bill Summary · AB 663

Legislative bill overview

AB 663 prohibits the sale and distribution of hydrofluorocarbon (HFC) gases in California with specified exemptions for essential uses. The bill aligns California's environmental regulations with the federal Kigali Amendment to the Montreal Protocol, which commits nations to phasing down potent greenhouse gases. It became law in October 2025.

Why is this important

HFCs are powerful climate-warming gases used in refrigeration, air conditioning, and foam blowing applications. Phasing them out addresses a significant source of greenhouse gas emissions and supports California's climate goals. The exemptions allow continued use where safer alternatives don't yet exist, balancing environmental protection with practical industry needs.

Potential points of contention

  • Industry compliance costs: Manufacturers and service providers must transition to alternative refrigerants, potentially increasing equipment costs and service expenses for consumers
  • Exemption scope and duration: Questions about whether exemptions are appropriately limited and whether exemption timelines give industries adequate time to develop and deploy alternatives
  • Interstate commerce impacts: California's stricter standards may create competitive disadvantages for in-state businesses compared to less-regulated states, or increase prices for California consumers

Compiled from official sources — confirm details with the bill’s official record.

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