The Lennox 37K63 Thermistor Kit is a critical OEM replacement sensor designed for high-accuracy temperature monitoring in residential and commercial HVAC systems

including Snyder General

It requires a 208-230V or 460V three-phase power supply and is not compatible with standard 120V or 240V single-phase residential circuits

Sleek Professional Finish: The deep black color provides a modern

also identified as the 200RB3T3T solenoid valve

Carrier EF17BZ252 Reversing Valve THPU32HP7Y The Lennox 37K63 Thermistor KitThe Carrier EF17BZ252 Reversing Valve is a critical 4 way pilot operated component engineered for heat pump applications requiring precise refrigerant flow reversal. This direct replacement for EF17BG249 features a 1 2" suction and 3 4" discharge ODF (Over Deluxe Fitting) connection configuration, ensuring a leak resistant braze joint. Operating on a 24V AC solenoid coil, this valve facilitates the changeover between cooling and heating modes by