Study guide
ASE T7 HVAC (Medium/Heavy Truck) study guide
Read a lesson, then practice the ideas you want to remember.
Lessons
- Plenum Air Doors: Blend, Mode & Recirculatio
- Air-Operated HVAC Controls & Actuators — Free Study Guide 2026
- Blower Motors, Speed Resistors & Pulse-Width
- Duct Systems, Cabin Air Filtration & Airflow
- Coolant Flow Control: Valves, Auxiliary Pump
- Heater Core Diagnostics, Clogging & Integrit
- Diagnosing Outlet Air Temperature Problems &
- Compressor Mountings, Drive Belts, Pulleys,
- Compressor Failure Analysis, Protection Devi
- Heavy-Duty Truck Compressor Types & Operatin
- Magnetic Clutch Diagnosis, Air Gap Adjustmen
- HVAC Control System Types, Control Panels, D
- Electronic Automatic Temperature Control & S
- Wiring Schematics, Clutch Relays & J1939 CAN
- Sleeper Cab Climate Systems & Auxiliary Powe
- Verifying the Complaint: Interview, Records,
- ASE T7 Exam Format, Task List & Question Str
- Shop Safety, PPE & Identifying the Truck's P
- Condensers, Ram Airflow & Fan Clutch Operati
- Evaporator Cores, Moisture Drainage & Freeze
- Refrigerant Hoses, Lines, Fittings, Service
- Metering Devices: Thermal Expansion Valves &
- Refrigerant Storage & Desiccant: Receiver-Dr
- Engine Cooling Fans, Shrouds, Grille Shutter
- Cooling System Tests, Radiators, Hoses & Cla
- Diesel Engine Cooling System Integration & T
- Refrigerant Leak Detection, Purity & Identif
- Manifold Gauge Pressure Analysis & Diagnosti
- Systematic HVAC Performance Testing & Diagno
- Superheat and Subcooling Analysis in Commerc
- Accurate System Charging, Charge by Weight &
- Environmental Regulations, Safety & Refriger
- Compressor Lubricants, System Flushing & Cle
- Refrigerant Recovery, Recycling & Deep Evacu
- Refrigerant Storage, Recovery-Cylinder Air C