R-22 is a refrigerant most commonly used in ________ systems.

R-22 is a refrigerant most commonly used in ________ systems.

• A. Automotive air conditioning
• B. Residential air conditioning
• C. Commercial refrigeration
• D. Industrial cooling

Answer: (B)

R-22 is a refrigerant historically tied to residential air conditioning systems because it was the standard in many home split and central AC units for years. It has ozone depletion potential, so regulations have phased it out for new equipment and increased restrictions on servicing, leading to the shift to more environmentally friendly options like R-410A in new homes. Automotive A/C typically uses different refrigerants (such as R-134a or newer blends), while commercial refrigeration and industrial cooling rely on other refrigerants (like R-404A or R-507). So the refrigerant most commonly associated with traditional residential air conditioning is R-22.

R-22 is a refrigerant historically tied to residential air conditioning systems because it was the standard in many home split and central AC units for years. It has ozone depletion potential, so regulations have phased it out for new equipment and increased restrictions on servicing, leading to the shift to more environmentally friendly options like R-410A in new homes. Automotive A/C typically uses different refrigerants (such as R-134a or newer blends), while commercial refrigeration and industrial cooling rely on other refrigerants (like R-404A or R-507). So the refrigerant most commonly associated with traditional residential air conditioning is R-22.