Heating maintenance on x3 Amana Gas Furnace systems. 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. x2) 20x25x1 & 1) 20x20x1 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 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 and monitored systems & left system operating well at this time. Recommending to customer to replace x3 air movement system standard duty