Lennox 57W37 Limit Switch 322055-301 Performance Rating: Delivers consistent static

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

Key Benefits Precise Refrigerant Metering: Automatically adjusts flow based on evaporator load to maintain consistent superheat

and ECS series heat pumps

Always verify the electrical load against the manufacturer's specifications on the switch housing before installation

Lennox 57W37 Limit Switch 322055-301 Performance Rating: Delivers consistent staticThe 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