Lennox 98M85 Ignitor 318423-701 50" WC set point ensures

50" WC set point ensures the unit heater operates within the manufacturer's exact safety tolerances

Durable Bi-Metal Construction: Engineered to handle high-pressure environments and resist corrosion within the HVAC system

ensuring the HVAC zone control system operates at peak efficiency

For steam or high-temp applications

Corrosion Resistance: Utilizing an AISI 316L stainless steel enclosure and wetted parts for longevity in saltwater and aggressive media applications

Lennox 98M85 Ignitor 318423-701 50" WC set point ensuresThe 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