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Covers equipment containing 5 lbs or less of refrigerant — window AC units, refrigerators, freezers, and dehumidifiers. Focuses on safe recovery techniques for sealed systems.

Approx. 20 minutes

Covers high-pressure systems using refrigerants like R-22 and R-410A — residential and commercial AC, heat pumps, and refrigeration equipment. The most common certification for residential HVAC technicians.

Approx. 20 minutes

Covers low-pressure systems using refrigerants like R-11 and R-123 — large commercial chillers found in office buildings, hospitals, and industrial facilities.

Approx. 20 minutes

Passes all four sections — Core, Type I, Type II, and Type III — in a single sitting. Required for technicians who work across residential, commercial, and industrial systems. Most employers require Universal certification.

Approx. 80 minutes