The Nordyne 622337 Transformer 40VA 24V Sec 120V Primary is a reliable power component designed for Nordyne HVAC systems. It converts 120V line voltage to a stable 24V output, supplying power to thermostats, control boards, and other low-voltage components. https://www.partshnc.com/622337-nordyne-120v-pri-24v-sec-40va-transfor