Today I came to 111 Rainbow Falls Gate #66 to perform a furnace tune up and hot water tankless flush as part of the home sale. Furnace tune up: Upon tune up and inspection of the 9 year old system I tested and adjusted the gas valve, burners, gas pressure and temperature rise. Pulled and cleaned the flame sensor. Tested ignition system, inducing motor and assembly, blower motor and assembly, heat exchanger, humidifier, static pressures, tested and tightened all electrical connections, all safety switches and control board. The furnace is in good condition. All components are working well within manufacturers specifications. The humidifier pad should be replaced before winter. Water heater flush and inspection: The electric water heater is also 9 year old. There was a lot of sediment in the tank and it was hard to get it flowing but I managed to remove most of the sediment. The average lifespan of an electric tank is 8-12. The tank is working well at this time.