Limited time offer exp 6/5/2022preventive maintenance can save you a lot of money, avoid replacing major components to your hvac, or even entire system due to lack of maintenance, be stranded in the middle of the season etc, etc.Offer includes the following: inspection and testing safeties, co levels checking mechanical components motors, blowers, bearings, burners, pilot, heat exchanger, wiring, electrical, sensors, temperatures rise adjusting belts and performance.Offer does not include repairs, duct cleaning, etc.Residential new customers only, units in attics, crawls spaces will be extra,no floor furnaces,Offer its good for Fremont, Union city, Hayward, Castro valley, San Leandro, San Lorenzo, Newark