Furnace maintenance. Cleaned and serviced furnace. Tested inducer motor, pressure switches, flame sensor, ignitor, gas valve voltage, blower motor amperage and capacitor. Checked thermostat and heat exchanger. Cleaned drain line. Replaced furnace filter that customer provided. Replaced humidifier pad that customer provided. Tested. Both systems are operating and heating as they should at this time. Performed free sump pump and water safety inspections.