For technicians performing a heat pump reversing valve replacement

Integrated Safety Controls: Includes primary and secondary thermal cutouts to prevent overheating during low-airflow conditions

It acts as a resettable fuse

Tank Longevity: Actively prevents rust-out and localized pitting in the steel lining

the internal separator core and filter element

Lochinvar & A.O. Smith 100109876 Switch Refrigerant For technicians performing a heatEnsure the safe and efficient operation of your liquid propane heating systems with the Lochinvar & A. O. Smith 100109876 Switch. This genuine OEM LP gas pressure switch is a critical safety component designed to monitor incoming fuel pressure and prevent burner ignition if levels fall below the required threshold. Specifically calibrated for propane applications, it features a fixed set point of 9. 0" WC (water column) to protect against low pressure