The United States Environmental Protection Agency (EPA) has released proposed Significant New Alternatives Policy (SNAP) Rule 27, expanding the list of acceptable refrigerants for motor vehicle air-conditioning (MVAC) systems, including R1234yf for buses and heavy-duty vehicles, plus the addition of R444A, R456A, R452A, R480A and R1234yf as acceptable retrofits in certain applications. Mobile Air Climate … Continue reading US EPA proposes YF for buses and heavy vehicles, lists potential retrofits
