What refrigerant classification does R-22 refrigerant fall under?

R-22 refrigerant is classified as A1 under the ASHRAE (American Society of Heating, Refrigerating, and Air-Conditioning Engineers) refrigerant classification system. This classification indicates that R-22 is non-toxic (A) and has a low flammability (1). It is important to recognize that non-toxic refrigerants are safe to use in typical applications without presenting a significant risk of harmful effects in case of exposure. Low flammability means that it would not easily ignite in air, making it safer to handle in routine handling and usage scenarios.

The classification system is essential for determining the safety and environmental impact of refrigerants. Each classification, including A1, A2, B1, and C1, provides specific information regarding toxicity, flammability, and environmental concerns, though R-22, being an A1 refrigerant, stands out due to its combination of safety and performance in cooling applications.