Furnace tune-up and safety inspection. Cleaned and serviced the furnace. Tested all mechanical components. Cleaned all sensors. Tested gas valve voltage and inlet/outlet pressures. Tested the 1st stage and 2nd stage heating. Changed the furnace filter that the customer provided. Merv 8. The system is clean, heating, and operating properly at this time. Performed free plumbing inspections. Customer renewed VIP maintenance plan. She will have both visits for 2026 prepaid.