Field glossary
A2L
ASHRAE safety class for mildly flammable, lower-GWP refrigerants, with added handling and ventilation requirements
Also defined as
- ASHRAE Standard 34 safety class for mildly flammable, lower-toxicity refrigerants such as R-454B and R-32
- An ASHRAE 34 safety class for low-toxicity, mildly flammable refrigerants such as R-32 and R-454B
Where this shows up
HVACRefrigeration accessories field guideHVACRefrigerant types and A2LHVACRefrigerant line brazing field guideHVACVRF commissioning field guideHVACSplit-system install field guideHVACRefrigerant leak detection field guideHVACRefrigerant charging field guideHVACDuctless mini-split install field guide