Tune-Up for Furnace/AC Includes:

Check fan blades for tightness	Check start and run capacitors	Set manifold pressure
Check evaporator coil	Lubricate fan motor	Test fan limit switch
Clean blower wheel	Monitor expansion valve	Check start and run delays
Inspect valves	Monitor refrigerant level	Clean or replace filters
Tighten electrical connections	Measure voltage differences	Measure amperage draw
Clean evaporator drain	Adjust bypass dampers	Adjust operating pressures
Check flue	Carbon Monoxide test	Clean combustion chamber
Evaluate safety controls	Clean and adjust burners	Clean heat exchanger
Measure temperature difference	Evaluate vent system	Clean condenser coil
Check combustion air	Check combustion air	Measure gas input
Check thermostat	Set burner adjustment	Test thermocouple