For many years, R-22 was the refrigerant of choice for commercial and residential air conditioning and heat pump systems. Supermarket refrigeration systems, industrial centrifugal chillers, and ...

[Editor's note: As the industry continues to look at creating cooling without R-22, one refrigerant that sometimes enters the equation is R-717, better known as ammonia or NH3. One compressor ...

Homeowners who have an air-conditioning system installed before 2010 could be in for a shock when their unit needs more Freon. While Freon, the Dupont/Chemours Co. brand name for the refrigerant R-22, ...