The Cozy Heaters 78069 Transformer is a 24VA electrical transformer designed to convert a 120V primary input into a safe and reliable 24V secondary output for HVAC control circuits. It works by stepping down line voltage to the low voltage required for thermostats, relays, gas valves, and other control components. Commonly used in compatible Cozy Heaters furnaces, wall heaters, and ot... https://www.partshnc.com/78069-cozy-heaters-593-6-transformer