Lochinvar & A.O. Smith 100112148 Switch 322056-301 and 104003000

and 104003000

If the noise is caused by a cracked hub

Built for durability and technical performance

Use a 393691 kit for Natural to LP transitions or a 394588 kit for LP to Natural gas conversions

this model is specifically designed for hot water heating systems

Lochinvar & A.O. Smith 100112148 Switch 322056-301 and 104003000The Lochinvar & A. O. Smith 100112148 Switch is a critical safety component designed for high efficiency water heaters and boilers. As a normally open pressure switch, it monitors negative air pressure created by the combustion air blower, ensuring the unit only proceeds to ignition once a proper draft is established. This genuine OEM replacement part is engineered to meet 2" WC specifications, providing the precision required to prevent hazardous gas