Qwikswap qt6100 universal ecm constant torque motor replacement qwikswap is an aftermarket ecm constant torque motor replacement board. Qwikswap is a money saving solution to replacement of a failed oem constant torque ecm, x13 or selectech motor while adding performance improving variable blower speed control. Use qwikswap with a permanent split capacitor (psc) motor to replace the failed ecm blower motor!! no programming required. features: direct oem replacement when combined with any permanent split capacitor (psc) motor (120 & 208-230 vac) provides variable blower air flow (known to improve performance) qwikswap automatically selects the best blower speed (low, med or high) every time the unit cycles on. provides improved humidity removal (56% improvement at 82f outdoor air temp, 157% at 97f outdoor air temp) no need to wait for the oem motor to be ordered no motor programming required replaces all oem constant torque motors 1/3 to 1 hp replaces x13 and selectech constant torque ecm motors quickly wired using existing oem motor connection patent-pending high efficiency design with smooth quiet speed changes 6,000 amps, 100 joules surge protection electronics fully conformal coated to protected from moisture at 82f outdoor air temperature, improves eer by 4.8 to 6.6% at 97f outdoor air temperature, improves eer by 2.1 to 5.2%