Regulation & law · 06/12/2021Updated: 10/17/2026 · 1 min read
EPA Proposes Listing of HFO-1234yf Refrigerant for Nonroad Vehicles
Summary
The Environmental Protection Agency (EPA) is proposing to list the refrigerant HFO-1234yf in motor vehicle air conditioning systems for certain nonroad vehicles, subject to specific use conditions, and to adopt industry safety standards for servicing these systems. The proposal also includes requirements for unique servicing fittings and a reference to the Toxic Substances Control Act regulations.
Original source language: Federal Register — All DocumentsOpen original release →