verify the part number against your existing burner controller and flame sensor type before installation

providing stable and repeatable linear movement

the Erie VT3313 provides the durability and hydraulic performance required for modern HVACR zoning projects

voltage spikes

Built with a NEMA 48 frame and a 1/2-inch diameter shaft

Lochinvar & A.O. Smith 100208324 Switch 320720-756 verify the part number againstThe Lochinvar & A. O. Smith 100208324 On Off Switch is a critical OEM replacement part designed for precise burner power control in high efficiency hydronic heating systems. As a veteran grade HVAC rocker switch, it provides a reliable interface for manual system cycling and emergency shutdowns. This specific 100208324 switch is engineered to meet the exact electrical specifications required for Lochinvar boiler models and A. O. Smith water heaters,