Lennox 57W37 Limit Switch 322055-301 If the pressure switch is

If the pressure switch is failing due to poor drafting or water backup in the heat exchanger

Performance Rating: Delivers consistent static pressure support for appliances ranging up to approximately 353

this L160-20 temperature control provides the exact thermal tolerances required to prevent heat exchanger damage and ensure professional-grade furnace performance

vibration-resistant attachment within the air handler or furnace cabinet

Fast Response: Achieves full stroke travel in 1

Lennox 57W37 Limit Switch 322055-301 If the pressure switch isThe Lennox 57W37 Limit Switch is a critical safety component designed for precise thermal regulation in residential and commercial furnaces. This genuine OEM Lennox replacement part features an auto reset mechanism, ensuring the system returns to standard operation once temperatures stabilize. Engineered as a normally closed circuit, the switch is calibrated to open on temperature rise at 170F and close on temperature drop at 140F, effectively