Furnace tune-up and safety inspection. Cleaned and serviced furnace. Tested all mechanical components. Cleaned all sensors. Cleaned exhaust pipe out. Tested gas valve voltage and inlet/outlet pressures. Found flame sensor very corroded and customer chose to replace it. Customer also renewed VIP maintenance plan. He will have both visits of 2026 prepaid. System is clean, heating, and operating properly at this time. Performed free plumbing inspections.