Lochinvar & A.O. Smith 100112429 Switch Els PW 17895 The integrated thermal limiter acts

The integrated thermal limiter acts as a critical safety cutoff

Installing this replacement furnace heat exchanger optimizes energy consumption and maintains consistent indoor air quality

is a high-grade NBR (Nitrile Butadiene Rubber) elastomeric spider designed for jaw-type shaft couplings

making it ideal for low-pressure gas trains

Precision Calibration: Engineered for accurate propane gas flow regulation in power-vented units

Lochinvar & A.O. Smith 100112429 Switch Els PW 17895 The integrated thermal limiter actsThe Lochinvar & A. O. Smith 100112429 Blocked Flue Switch is a critical safety component designed for high efficiency water heaters and commercial boilers. As a normally closed thermal switch, it monitors the venting system for atmospheric pressure imbalances or physical obstructions that could lead to dangerous carbon monoxide accumulation. Engineered for precision, this OEM replacement part triggers a system shutdown if it detects flue gas backup,