Furnace tune-up and safety inspection. Cleaned and serviced furnace. Customer renewed VIP maintenance plan. Tested all mechanical components. Replaced furnace filters that the customer provided. I replaced the humidifier pad filter due to extreme calcification. Cleaned all sensors. Cleaned the condensation system. Tested gas valve voltage and inlet/outlet pressures. The system is clean, heating, and operating properly at this time. The customer will have one more visit prepaid for spring/ac visits of 2026. Performed a free plumbing inspection.