How much heat a gas traps compared with the same mass of carbon dioxide over a set period.
GWP compares a gas's warming effect with CO₂, which is defined as 1, usually over 100 years. Many HFC refrigerants have GWPs in the thousands, which is why lower-GWP refrigerants such as A2L blends are replacing them in new equipment.
Exam work areas
A · Safety and trade practice C · Planning installs and retrofits