Lochinvar & A.O. Smith 100318326 Pressure Switch 321894-708 Contractors rely on this module

Contractors rely on this module for its heavy-duty construction and noise-immune synchronous drive

The Lennox 76K01 Blower Wheel is a high-performance 10x10 centrifugal fan wheel specifically engineered for direct drive blower assemblies in Lennox

Common Questions Is the Danfoss 119-5663 compatible with my current 119-3257 setup

Universal Compatibility: Operates on both 120V and 240V circuits for versatile field application

Lochinvar & A.O. Smith 100318326 Pressure Switch 321894-708 Contractors rely on this moduleThe Lochinvar & A. O. Smith 100318326 Pressure Switch is a critical safety component designed for precise water pressure monitoring in high efficiency Noble Fire Combi Boilers and NKC series units. Engineering to detect low water pressure conditions, this switch acts as a primary fail safe, preventing dry fire scenarios and potential heat exchanger damage by ensuring the burner circuit remains open unless sufficient system pressure is established.