While this is a standard SPST pressure switch

you must wire specifically to the 0

Direct Drop-In Replacement: Seamlessly replaces the legacy ARE37C3E-IAA-959 model to minimize field modification time

This control is typically wired in series with the motor starter or contactor coil to manage liquid evacuation once the probe makes contact

Key Benefits for Contractors Solid-State Reliability: Replaces mechanical floats with a low-voltage probe system to prevent fouling and mechanical hang-ups

Bard HVAC 5650-040BX Reversing Valve 318973-401 While this is a standardFor contractors maintaining Bard HVAC systems, the Bard 5650 040BX Reversing Valve is your go to OEM replacement. This critical component, featuring 7 8 x 1 2 reversing valve connections and a robust 24V coil, is engineered for precise refrigerant flow management in heat pump applications. It directly replaces older models 5650 040 and 42W59, ensuring seamless integration and optimal system performance. Manufactured in the USA, this valve is essential