Furnace tune-up and safety inspection. Cleaned and serviced two furnaces. Tested all mechanical components. Cleaned all sensors. Tested both gas valves and voltages/ inlet, outlet pressures. Replaced AprilAir furnace filter (410). Replaced the humidifier pad that the customer provided. Cleaned the condensation trap out of the basement furnace due to it being 96% furnace. Cleaned all pressure switch hoses. Both systems are clean, heating and operating properly at this time. Performed free plumbing inspections. Renewed annual VIP service plan.