https://dallashvacauthority.com/r410a-r32-r454b-hvac-dallas/
R-410A Phase-Out and New Refrigerants in Dallas HVAC Systems
The refrigerant landscape in U.S. residential and commercial HVAC is undergoing a federally mandated transition away from R-410A, a hydrofluorocarbon HFC with...
phase outnew refrigerantsin dallas