Lennox 20W36 Limit Switch 30067439-890 technicians can maintain system integrity

technicians can maintain system integrity while minimizing downtime

While designed primarily for R-410A

or the temperature setpoint

using this genuine OEM contactor is essential for maintaining precise control over electrical loads and ensuring the system operates within manufacturer specifications

Lennox 20W36 Limit Switch 30067439-890 technicians can maintain system integrityThe 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