Federal rules that took effect in 2025 quietly rewired how new home air conditioners and heat pumps are built, yet many ...

When a contractor suggests installing equipment that still uses last year’s refrigerant, you are not just choosing a model year, you are stepping into the middle of a national policy shift on how ...

Freon 12 is the Dupont trade name for flurocarbon refrigerant gas, CCl 2 F 2. The material has a molecular weight of 120.92. Its critical constants are: T c = 385 K, p c = 41.2 bars, and Z c = (p c v ...

EDITOR’S NOTE: One issue concerning counterfeit refrigerants is the possibility of contamination in such systems. A major report on this has been published by the AHRI under the title: “Reports of ...