ASE S7 Air Conditioning Systems & Controls (School Bus) Practice Questions - ASE S7 - Air Conditioning Systems & Controls (School Bus) Certification Exam

A school bus A/C system uses R-134a. Which refrigerant identifier and service practice applies?

R-134a is a non-flammable HFC requiring SAE J2788 recovery/recycling equipment R-134a is a flammable HFO requiring spark-proof tools only R-134a is the same as R-12 and uses mineral oil R-134a requires no recovery because it is environmentally inert

Correct Answer:

R-134a is a non-flammable HFC requiring SAE J2788 recovery/recycling equipment

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