A trans-isomer HFO refrigerant used in chillers, heat pumps, and aerosol propellants as a low-GWP alternative to R-134a. Its GWP is approximately 7 and it is classified A2L.
HVAC Glossary
R-1234ze(E)
Last updated: June 9, 2026
A trans-isomer HFO refrigerant used in chillers, heat pumps, and aerosol propellants as a low-GWP alternative to R-134a. Its GWP is approximately 7 and it is classified A2L.