Comfort Club Gas Heating Maintenance , Monthly Plan Maintenance for (1) gas furnace/hot water boiler Includes replacing of standard fiberglass air filter (pleated higher performance filters can be added at an additional cost) , includes replacing blower belt (if applicable), grease or oil bearings, check gas pressure to the appliance, clean the condensate drain line on high efficiency appliance, check operation of all safety devices, check operation of operating controls, check all motors, visual inspection of the duct system or piping system. Perform a combustion analysis of the appliance. With a Comfort Club service you will also receive the added benefits of a 10% discount on repairs and diagnostic fees, service within 48 hours of placing the call and a water heater flush