Lochinvar & A.O. Smith 100208556 Sensor Kit 318423-701 Designed with 3/8" ODF solder

Designed with 3/8" ODF solder inlet and outlet connections

This heavy-duty thermal expansion valve power element

Whether you are troubleshooting a frozen heat pump coil or performing preventative maintenance

The 370V oval capacitor configuration ensures a drop-in fit for compact York

The Sporlan 168072 QC-1 is designed for conventional port Q series valves

Lochinvar & A.O. Smith 100208556 Sensor Kit 318423-701 Designed with 3/8" ODF solderThe Lochinvar & A. O. Smith 100208556 Limit Flue Sensor Kit is a critical OEM replacement component engineered for precise monitoring of exhaust temperatures in high efficiency heating systems. This flue limit rated sensor acts as a primary safety mechanism, detecting excessive heat within the venting system to prevent heat exchanger damage and ensure professional grade operational safety. Designed to replace legacy part numbers 100170535 and