 | Check the furnace and heat exchanger
for cracks and holes |
 | Check the burner and control |
 | Check and adjust the thermostat |
 | Check and adjust all safety controls |
 | Clean the pilot light |
 | Check the filter (will clean or change) |
 | Check the chimney |
 | Clean and adjust the burner |
 | Check for gas leaks |
 | Lubricate the bearing |
 | Adjust pressure regulation |
 | Check belts and adjustment |
 | Check the fan operation |
 | Check the complete furnace cycle |