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typically used in systems not exceeding 160 psi at 250°F
it features a single pole single throw (SPST) configuration and utilizes a dual 1/4" barb connection for seamless integration with existing vacuum tubing
this genuine OEM part maintains the operational integrity of the HVAC control system
What are the signs of a failing heat exchanger in these units
Lennox 39H23 Coupler 320074-702 typically used in systems notThe Lennox 39H23 Damper Coupler is a critical OEM replacement part engineered for commercial and residential HVAC ventilation systems. As a right hand blade damper coupling, this component ensures the mechanical synchronization between the damper blades and the actuator shaft. Constructed from high grade, durable nylon, the 39H23 is designed to withstand the high cycle demands of modern economizers and air handling units without deforming or slipping.
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