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 out drain line. Replaced furnace filter that customer provided. System under warranty. Everything is operating and heating as it should at this time. Customer renewed VIP maintenance program. One visit is being used today and they will have one remaining for 2025 cooling season.