Heat pumps, geothermal and AC
2026 Heat Pump Buyers Guide for Homeowners and Professionals
...refrigerant transition
A major regulatory shift took effect on January 1, 2026, requiring most new heat pumps to use low-GWP refrigerants. The industry has largely moved away from R-410A in favor of R-32, R-454B, and R-290 (propane).
R-290 (propane) is particularly notable for its near-zero GWP of 3 and its ability to ...
