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 16x25 Prestine Check and clean ignition Assembly-ok Check and clean- flame sensor-ok 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 settings Performance-ok Check and clean condensate water traps-ok Check and clean condensate pump- washed out. Check and cleaned Humidifier-ok Hum water panel- replaced with a new one Check and run Thermostat- operating at this time. Inspected water heater Check for water leak - tank is leaking needs to be replace (SAP) the HWH is shut down because the water leak. note customer has not hot water at the moment. Run system, left system operating well at this moment. recommended to the cus