Furnace maintenance. Cleaned and serviced furnace. Tested inducer motor, pressure switches, ignitor, gas valve voltage and pressure, flame sensor, blower motor amperage and capacitor. Tested thermostat and heat exchanger. Cleaned drain trap and all hoses. Replaced furnace air filter that customer provided. Everything is in accurate working condition. System is operating and heating as it should at this time. Customer renewed annual VIP maintenance program.