The Lochinvar & A.O. Smith 100111550 Transformer is a compact electrical component designed to provide low-voltage power to control circuits in compatible HVAC and water-heating equipment. Featuring a 120V primary and 24V secondary output with an 8.4VA rating, it reduces incoming line voltage to a safer level required by system controls. This transformer is used in compatible Lochinva... https://www.partshnc.com/100111550-lochinvar-ao-smith-transformer