During today’s visit, performed maintenance and inspection on two basement, furnace units and one attic furnace unit. Inspected flue pipes and ductwork for leaks. Inspected overall cleanliness of the blower and burner compartments. Inspected pressure switches, flame sensors, igniters, and burners. The customer had already changed all filters, so spares were left for the customer. Upon inspection of the blower capacitors, found the master bedroom and the upstairs furnaces’ blower capacitors below specifications. Both capacitors are rated at 20 µF. It is recommended to replace these capacitors at this time. Performed ignition sequence on all systems and inspected flames. Inspected and draws for all blowers and inducer fan motors. Inspected temperature heat rise for all three systems, and temperature heat rise is within the ideal range. All three systems are functioning normally at this time.