Lennox 40L81 Flame Sensor Kit Els PW 17895 Heavy-Duty Construction: Built to endure

Heavy-Duty Construction: Built to endure the high-temperature conditions of a furnace cabinet while maintaining SPST switch integrity

Built with a high-strength aluminum body and a corrosion-resistant center spider

it keeps the fan running to cool the heat exchanger while blocking the gas valve for safety

allowing for a streamlined installation in tight spaces

What are the symptoms of a failing pressure switch in a Bard unit

Lennox 40L81 Flame Sensor Kit Els PW 17895 Heavy-Duty Construction: Built to endureThe Lennox 40L81 Flame Sensor Kit is the critical genuine OEM replacement for maintaining combustion safety in Lennox HVAC systems. Engineered as a direct 1: 1 substitute for 40L8101 and LB 94701A, this kit is vital for the SureLight ignition system found in G23, G26, G32, and 90UGF series furnaces. As a veteran grade HVAC flame rod, it utilizes flame rectification to signal the control board, ensuring the gas valve remains bridged only when a stable