What you should expect your service technician to do during a service call.

A lot of people ask us about the procedures that our technicians actually follow when they go out on annual tune-up and cleaning of furnaces and central air conditioners. The following is actually a checklist of (in broad terms) what our techs do when they come to your home:

Outdoor Units

  • Inspect unit for proper refrigerant level and adjust if necessary.
  • Clean dirt, leaves and debris from inside cabinet.
  • Inspect base pan for restricted drain openings – remove obstructions as necessary.
  • Inspect coil and cabinet – clean as needed.
  • Inspect fan motor and fan blades for wear and damage – on older models lubricate as needed
  • inspect control box, associated controls / accessories, wiring and connections. Controls may include contactors, relays, circuit boards, capacitors, sump heat and other accessories. All control box and electrical parts should be checked for wear or damage.
  • Inspect compressor and associated tubing for damage

Indoor Units

  • Inspect and clean blower assembly (includes blower housing, blower wheel and motor).
  • On older models, lubricate motor and inspect and replace fan belt if neede.
  • Check combustion blower housing for lint and debris and clean as necessary.
  • Inspect evaporator coil, drain pan and condensate drain lines. Clean as needed.
  • Inspect for gas leaks in furnace.
  • Inspect burner assembly – clean and adjust as needed.
  • Inspect ignition system and safety controls – clean and adjust as needed.
  • Inspect heat exchanger or heating elements.
  • Inspect flue system – check for proper attachment to the furnace, any dislocated sections, and for signs of corrosion. Replace if necessary.
  • Inspect control box, associated controls, wiring and connections.
  • Clean or replace air filters.
  • Inspect conditioned airflow system (ductwork) – check for leaks.
Repair Checklist was last modified: July 8th, 2017 by HVAC Expert

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