Heating Maintenance on 34yr old Trane Gas Furnace system. Perform a tune-up and cleaning to help ensure reliable and safe operation. Inspect for cracks & deterioration of Heat Exchanger Check and clean Burners, brush and vacuumed-ok Check and clean Air Filter- replaced. x1) 16x25x1 provided by customer Check and clean ignition Assembly-ok Check and clean- flame sensor/Flame rod-ok Check and tested hot surface igniter Check Safety Controls-ok Check CO2-CO- okay Check electrical wiring and components-ok Check Gas valve & Gas Line-ok Check Combustion Air, intake & exhaust lines-ok Check Temperatures split Performance-ok Check and clean condensate water traps-ok Check Humidifier-N/A Old Fashioned. Customer plug in when ready to use Hum water panel- N/A Check and run Thermostats- operating at this time. Inspected water heater Check for water leak- no leakage at this time. Check gas valve and gas Line-ok Ran water heater, operating well at this moment. Ran system, left system operating well