All 45 exams / T-series / ASE T7 Heating, Ventilation and Air Conditioning
T7
ASE T7 Heating, Ventilation and Air Conditioning
Medium and heavy trucks
What's on the T7 exam?
1
HVAC Systems Diagnosis, Service, and Repair
2
A/C System and Component Diagnosis, Service, and Repair
3
Heating and Engine Cooling Systems Diagnosis, Service, and Repair
4
Operating Systems and Related Controls Diagnosis and Repair
Content-area outline only, authored from ASE's public task-list structure. No test question, answer, or diagnostic scenario is reproduced from ASE or any prep publisher.
T7 quick reference T-series
Categoryrepair technician
Work experience2
Question count50
Time allowed60 minutes
Fee$62
Recert cycle5 years
Recert pathRetest (approximately half-length recert version) every 5 years, or the ASE Renewal App.
Source: https://ase.com/wp-content/uploads/ASE_MedHeavyTruck_Study_Guide.pdf.
Checked 2026-07-30.
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