brass flare fitting designed for high-pressure refrigeration and HVACR service

offering the same mounting footprint and technical specifications

Standard field testing involves checking for continuity across the terminals once the inducer motor reaches full speed

When you're out in the field servicing a 2

Lennox 15D57 Defrost Board R-410A brass flare fitting designed forThe Lennox 15D57 Defrost Board is a high performance OEM defrost control kit specifically engineered for direct replacement in Lennox heat pump systems. As a veteran grade HVAC replacement part, this kit integrates a demand defrost control logic that actively monitors outdoor coil temperatures via the included 28W71 ambient sensor harness. This prevents excessive frost accumulation and optimizes system efficiency during low ambient operation. The