Properly Performed spring/fall maintenance 2 systems. Replaced all filters checked blower wheels for built up dirt/dust, cleaned flame sensors, cleared inducer ports, tested hot surface igniters, took delta Ts, cleared drain lines, tested safety switches, tested all electrical components, tightened all electrical connections, took running volts/amps, monitored systems operations. Customer did not renew their membership. They want to call office to discuss it before renewing.