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:
- 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
- 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.