Refrigerants & EPA
R-454B Refrigerant: The Complete Guide for HVAC Contractors
R-454B (brand name Puron Advance) is the primary replacement refrigerant for R-410A in residential and light commercial HVAC equipment. Equipment...
Refrigerants & EPA
Refrigerant Recovery: Procedures, Equipment, and Regulations
What Is Refrigerant Recovery and Why Does It Matter? Refrigerant recovery is the process of removing refrigerant from an HVAC/R system and…
Refrigerants & EPA
R-454B Refrigerant: Properties, Safety, and Transition Guide
R-454B is a hydrofluoroolefin (HFO) blend refrigerant composed of 68.9% difluoromethane (R-32) and 31.1% 2,3,3,3-tetrafluoropropene (R-1234yf) by weight. Designated by ASHRAE as…
Refrigerants & EPA
R-22 Retrofit Options: Drop-In Replacements and System Changes
Why R-22 Retrofit Matters R-22 (ASHRAE designation for chlorodifluoromethane, CHClF2) served as the dominant refrigerant in residential and commercial air conditioning for…
Refrigerants & EPA
R-410A Phase-Out: What HVAC Contractors Need to Know
R-410A has served as the dominant refrigerant in residential and light commercial HVAC systems since the early 2000s, replacing R-22 due to…
Refrigerants & EPA
Refrigerant Leak Detection: Methods and Best Practices
Refrigerant leak detection is the process of locating and quantifying the escape of refrigerant from a sealed HVAC or refrigeration system. A…
Refrigerants & EPA
Refrigerant Charging: Superheat and Subcooling Methods
Proper refrigerant charging is one of the most critical skills in HVAC service work. A system that is overcharged or undercharged by…
Refrigerants & EPA
Refrigerant Types: R-22, R-410A, R-454B, R-32 Compared
Refrigerants are the working fluids that make air conditioning and heat pump systems possible. They absorb heat from indoor spaces and release…