Which refrigerants are associated with ozone depletion and commonly found in Type I equipment?

Prepare for the HVAC EPA Type I Test. Study with flashcards and multiple choice questions, each with hints and explanations. Get ready to excel in your exam!

Multiple Choice

Which refrigerants are associated with ozone depletion and commonly found in Type I equipment?

Chlorinated refrigerants are the ones linked to ozone depletion. When these compounds break down in the upper atmosphere, chlorine radicals catalytically destroy ozone molecules. Chlorinated refrigerants—chlorofluorocarbons and hydrochlorofluorocarbons, such as R-12 and R-22—were widely used in small, Type I equipment, so they’re the refrigerants most associated with ozone depletion. In contrast, refrigerants that don’t contain chlorine, like hydrofluorocarbons (R-134a), natural options such as CO2, and hydrofluoroolefins, do not deplete the ozone layer. So the answer pointing to CFCs and HCFCs best fits the question.

Chlorinated refrigerants are the ones linked to ozone depletion. When these compounds break down in the upper atmosphere, chlorine radicals catalytically destroy ozone molecules. Chlorinated refrigerants—chlorofluorocarbons and hydrochlorofluorocarbons, such as R-12 and R-22—were widely used in small, Type I equipment, so they’re the refrigerants most associated with ozone depletion. In contrast, refrigerants that don’t contain chlorine, like hydrofluorocarbons (R-134a), natural options such as CO2, and hydrofluoroolefins, do not deplete the ozone layer. So the answer pointing to CFCs and HCFCs best fits the question.

More practice questions