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Ships within 48 hours · Estimated delivery Sep 12 - Sep 17
Contractor Grade: Designed for rapid field installation to reduce labor time during HVAC sensor maintenance
What symptom indicates a failed damper door spring
This assembly ensures precise gas flow control and stable pilot flame maintenance
Key Benefits for Technicians Precision Thermal Safety: Fixed L175F trip point provides accurate response to excessive flue temperatures
Lennox 20J83 Limit Switch Contractor Grade: Designed for rapidThe Lennox 20J83 Limit Switch (Model 20J8301) is an essential HVAC OEM replacement part engineered for precise thermal management in high efficiency furnaces. This single pole, single throw (SPST) automatic control is factory calibrated to actuate at 165F, effectively breaking the circuit to prevent heat exchanger damage or unsafe operating conditions. Once the plenum temperature cools to 135F, the switch automatically resets, restoring normal system
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