Know what to expect
How Long Does an HVAC Repair Typically Take?
Most HVAC repairs take 1–3 hours, but more complex issues may require additional time. The duration depends on the type of repair, part availability, and system condition.
Factors That Affect HVAC Repair Time
The time needed for an HVAC repair depends on several factors, including the complexity of the issue and part availability.

Estimated Time for Common HVAC Repairs
- Capacitor or relay switch replacement: 30–60 minutes
- Thermostat replacement: 45–90 minutes
- Refrigerant recharge: 1–3 hours
- Compressor replacement: 3–6 hours
- Evaporator coil replacement: 4–8 hours
When Repairs Might Take Longer
Repairs may take longer if specialized parts are needed, if the system is difficult to access, or if multiple issues are affecting performance.