ASE A7 Heating & A/C practice test
The A7 test leans hard on gauge-reading interpretation — what high and low side pressures together say about charge, airflow, and the expansion device — plus refrigerant handling rules and climate-control electronics.
Compared with R-134a, R-1234yf:
How the A7 test works
50 scored questions
+ ~10 unscored research questions
75 minutes
computer-based, at a test center
$62 per test
plus one $34 registration fee per order
Valid 5 years
then a shorter recertification test
ASE does not publish a fixed passing percentage — scores are scaled. Around 65–70% correct is the commonly cited range; aim above 80% in practice so you walk in with margin. The certificate is issued once ASE verifies your required work experience.
What the A7 test covers
The official task list for A7 Heating & Air Conditioning breaks down into these content areas — the practice bank above draws from all of them:
- A/C diagnosis — high/low-side gauge interpretation, poor cooling, and noise
- Refrigeration components — compressor, condenser, evaporator, TXV vs orifice tube, drier vs accumulator
- Heating and engine cooling — heater core, blend doors, and thermostat
- Operating systems and controls — blower circuits, automatic climate control, and actuators
- Refrigerant recovery, recycling, and handling — R-134a and R-1234yf
Frequently asked
- How many questions are on the ASE A7 test?
- The A7 test has 50 scored questions plus about 10 unscored research questions, with a 75-minute time limit.
- Is EPA Section 609 the same as ASE A7?
- No — Section 609 is the separate EPA credential required to buy refrigerant and service mobile A/C systems. A7 is the ASE competency certification; many technicians hold both.
- What should I drill hardest for A7?
- Pressure-gauge scenarios. Being able to read “both low”, “high high-side”, or “low side in vacuum” straight to a cause answers a large share of the test.