Class II refrigerants have an ozone depletion potential (ODP) less than what value?

Class II refrigerants, also known as hydrochlorofluorocarbons (HCFCs), are designated to have an ozone depletion potential (ODP) of less than 0.2. This classification is significant because it reflects the potential impact that these substances can have on the ozone layer. While they are less harmful compared to Class I refrigerants (like chlorofluorocarbons or CFCs), which have much higher ODP values and have largely been phased out due to their damaging effects on the ozone layer, Class II refrigerants still carry some risk. Thus, maintaining an ODP of less than 0.2 helps to minimize their environmental impact while providing a transitional option toward more environmentally friendly refrigerants. Understanding this classification is essential for technicians when selecting refrigerants for systems and ensuring compliance with environmental legislation.