Lennox 20J83 Limit Switch providing the necessary reach for

providing the necessary reach for complex evaporator coil placements

Key Benefits Precise Airflow Monitoring: Built with two sensing points to capture accurate differential pressure for VAV and fan terminal units

the T24 offers the headroom needed to prevent overheating in high-cycle environments

Key Benefits for Contractors Direct OEM Compatibility: Ensures exact fit for Rheem-Ruud 45-100834-80 specifications without the need for field modifications or splicing

Lennox 20J83 Limit Switch providing the necessary reach forThe 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