Arrived on site due to customer request of getting his heating system looked at. Customer does not have enough wires to run a duel fuel system. We recommend installing a Honeywell Pro 9000 thermostat with an EIM to limit the needed wires and adding an outdoor wireless thermostat for proper duel fuel operation. Provided customer pricing for a new heat pump system. Insured the unit was working properly upon leaving. Thank you for choosing CPI Plumbing & Heating Inc.