Good on all furnace brands.
Price on oil furnace may be slightly higher.

n Check and adjust thermostat
n Check heat exchanger
n Check gas safety control
n Check limit safety
n Check fan control
n Check main burners
n Clean pilot assembly

n Adjust burner for efficiency
n Adjust gas pressure
n Lubricate motors
n Check and adjust belt
n Check air filters
n Check vent pipe
n Check complete furnace cycle