SC HVAC Contractor Practice Questions - South Carolina HVAC Contractor License Exam

What is the proper method for determining if a residential AC system needs refrigerant?

If it's not cooling well, add refrigerant Measure superheat and/or subcooling and compare to manufacturer specifications Check if ice forms on the lines Simply top off every year

Correct Answer:

Measure superheat and/or subcooling and compare to manufacturer specifications

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