Furnace tune-up and safety inspection. Cleaned and serviced the furnace due to the 10-year VIP service plan. Tested all mechanical components. Cleaned all sensors. Replaced customer-provided furnace filter and humidifier pad filter. Cleaned condensation trap and all hoses. Cleaned pressure switch hoses. Tested gas valve voltage/inlet and outlet pressures. The heating system is clean, heating, and operating properly at this time. Performed free plumbing inspections.