maintaining maximum heat transfer efficiency

providing stable electrical overload protection and ensuring that the compressor operates strictly within its designated safety parameters to avoid premature mechanical wear

Does this unit function without a pressure differential

Whether you are performing a heat pump reversing valve replacement or an emergency system overhaul

Is the SFD-27S9-VV bidirectional

Lennox 98M85 Ignitor R-134A maintaining maximum heat transfer efficiencyThe Lennox 98M85 Ignitor (also identified by part number 100220 01) is an OEM silicon nitride hot surface ignitor designed for high performance gas furnace applications. Engineered specifically for Lennox, Armstrong, and Ducane heating systems, this replacement furnace ignitor produces a precise, high temperature spark to ensure consistent fuel ignition and reliable startup cycles. Unlike standard glass or silicon carbide alternatives, the 98M85