Here is what a program like this may look like (keeping in mind that specific factors may vary from one system or unit to another):
OUTDOOR INSPECTION
- Clean and inspect cabinet and coil
- Clear all obstructions from condensate lines and drain pans
- Inspect compressor
- Lubricate and inspect fan motor and fan blades
- Test refrigeration system
- Inspect wiring, safety controls, switches and control box
INDOOR INSPECTION
- Clean and check blower assembly
- Lubricate belts and replace as needed
- Clean combustion blower housing
- Test safety controls
- Clean and clear drip pan, evaporator coil and condensate lines
- Inspect heat exchanger
- Clean and replace air filter
- Check duct system
- Tighten and check control box, connections and wiring
- Check thermostat controls