The Trane CNT3159 Pressure Switch is an essential high-pressure cut-out designed for precise refrigerant circuit monitoring in residential and light commercial HVAC units

Rugged Build Quality: Features a resilient 48 NEMA frame and OAO housing for superior thermal management during continuous duty cycles

meeting UL 810 safety standards for pressure-sensitive internal protection

but through MFT programming

This hot surface igniter is the reliable professional choice for restoring peak efficiency to ADF and ADFH model units

Lennox 20W36 Limit Switch 321894-709 The Trane CNT3159 Pressure SwitchThe Lennox 20W36 Limit Switch is a critical safety component designed for precise thermal regulation within Lennox residential furnace heating systems. Engineered as a 110 150F AUTO limit switch, this L150 40F thermal control monitors the heat exchanger temperature to prevent overheating conditions. When the high limit sensor detects temperatures exceeding the 150 degree threshold, it interrupts the burner circuit, resetting automatically once the