Durable Construction: Built with robust materials to resist common failure points like moisture corrosion and heat stress

Ball Bearing Construction: Engineered for all-angle mounting

Burnout typically occurs due to incorrect voltage application

For contractors performing AC capacitor replacement

Verify the specific cooling tonnage and heating capacity configuration to ensure total system compatibility and direct fit installation in the field

Lochinvar & A.O. Smith 100109933 Switch 323269-701 Durable Construction: Built with robustThe Lochinvar & A. O. Smith 100109933 Blocked Inlet Switch is a critical safety component designed for high efficiency water heaters and boilers. Engineered to monitor atmospheric pressure within the combustion air intake, this OEM replacement pressure switch ensures the burner operates within safe pneumatic parameters. This specific blocked inlet switch kit is calibrated to a set point of 0. 77" Water Column, effectively detecting restricted airflow