3 system super tune up perfomed today. All systems are gas furnaces with straight cool condensers. 7.5 mfd blower capacitors in the main unit and the upstairs unit are out of spec and need to be replaced. Inducer motor for the main downstairs unit is amping high and making a grinding noise. Inducer needs to be replaced. No drain protection on the main downstairs system. Bedroom furnace is only two years old. All electrical connections on all three units are acceptable. Refrigerant levels are in range. All safeties are working properly. All systems running as they should at this time.