During today’s visit, performed maintenance and inspection on one basement air handler, one basement furnace (dual fuel), and to outdoor heat pump units. Changed both filters. Filter sizes are 16 x 20 x 1, and 16 x 25 x 1. Inspected flue, pipe and ductwork for leaks. Inspected blower compartments, burner compartment, and coil compartment for overall cleanliness. Inspected all electrical components on both systems. Inspected temperature Heat rise for both systems. Inspected outdoor heat pump unit electrical components. both systems are functioning normally at this time. The customer is upgrading to have both systems on the monthly payment plan.