This filter is built to withstand the chemical interactions of modern refrigerants and oils

Optimized for low-temperature regulation

Its durable construction meets stringent factory specifications

This part is the primary collector pan only

Lochinvar & A.O. Smith 100277755 Pressure Switch 318423-701 This filter is built toThe Lochinvar & A. O. Smith 100277755 Pressure Switch is a mission critical component engineered for precise atmospheric monitoring in high efficiency boilers and water heaters. Calibrated to a . 95" WC (Water Column) set point, this OEM replacement pressure switch ensures the inducer fan is generating the correct static pressure before allowing the ignition sequence to proceed. As a veteran grade HVAC induction switch, it is designed to prevent