Which technician certification is required to service a 150-pound R-134a chiller, a medium-pressure appliance?

Recovery requirements · EPA 608 Type II. The correct answer, and the reasoning behind it.

Evacuation levels by charge size and equipment date, major repairs, and system-dependent limits.

The question

Which technician certification is required to service a 150-pound R-134a chiller, a medium-pressure appliance?

• AType I
• BType IICorrect answer
• CType III
• DNo certification is needed

Why “Type II” is correct

Type II certification covers medium-, high- and very high-pressure appliances other than small appliances and motor vehicle air conditioners. R-134a is a medium-pressure refrigerant, so this chiller is Type II work.

Source: 40 CFR 82.161(a); 40 CFR 82.152

Why the other answers are wrong

• Type I — Type I covers only small appliances with 5 pounds or less.
• Type III — Type III covers low-pressure appliances such as R-123 chillers.
• No certification is needed — Anyone who opens this circuit must be certified.

Practice more of this

More EPA 608 Type II practice questions, or see every EPA 608 practice test.