014-inch orifice size and is specifically engineered for 3/16" tube connections

Precise Safety Calibration: Maintains a strict 120°F to 140°F operating range to protect the gas furnace from overheating and potential cracks in the heat exchanger

What is the resistance curve for this sensor

maintaining operational efficiency and safety on the job site

preventing nuisance drop-outs in residential and commercial heating equipment

Lennox 36N77 Hot Surface Ignitor 014-inch orifice size and isThe Lennox 36N77 Hot Surface Ignitor is a critical OEM replacement part designed for high performance gas fired combustion systems. Also identified by the identical part number 36N7701, this nitride ignitor is engineered to withstand extreme thermal cycling within residential furnaces and boilers. As a direct fit HSI, it ensures precise gas ignition by delivering a robust heat source that interfaces seamlessly with the furnace's integrated control