• Visually inspect furnace cabinet for defects, rust, moisture, and corrosion
• Clean and inspect burner compartment
• Clean and inspect blower compartment
• Clean blower motor end
• Clean inducer or vent motor end
• Check inducer or vent motor for visible cracks and corrosion
• Inspect igniter**
  Clean flame sensor**
  Clean pilot assembly and de-carbon thermocouple**
• Verify igniter operation
• Inspect the gas valve for signs of corrosion or leaks. Check the manifold gas pressure (adjust if necessary).
• Check the operation of gas valve staging**
• Check air filter and change if necessary (We can provide a filter for an additional charge.)
• Check blower control Verify “cool down” run after a call for heat is satisfied
• Inspect connections for low-voltage safety chain and limit/auxiliary controls
• Check blower door lock and safety switch operation
• Clean pressure switch port tube/barb connection
• Clean and clear condensate trap**
  Check condensate drain path**
  Check condensate pump for proper operation**
• Visually inspect venting/flue pipe
• Check furnace operation for vibrations, excessive or unusual noise
• Check temperature rise (adjust if necessary)
• Analyze combustion to evaluate if the furnace is safe to operate
• Verify that thermostat cycles (starts/stops) the furnace
• Inquire about thermostat batteries (assist in changing if necessary)
• Recommend any repairs or modifications noted during service
• Address any accessories that may require maintenance (humidifier, air purifier, etc.)
• Discuss the performed service and recommend a periodic maintenance schedule

Note: ** If applicable. Not all furnaces have this equipment.