Lennox 52W29 Flame Sensor

The Lennox 52W29 Flame Sensor is a critical safety component found in Lennox gas-fired furnaces. It acts as a watchful eye within the burner assembly, detecting the presence of a flame. This ensures safe and efficient operation by shutting down the gas supply if a flame isn't detected. This vital function prevents potential gas leaks and explosions. The sensor is a straight probe designed for simple installation and replacement. It can withstand the high temperatures present within a furnace, typically ranging from 1300°F to 1800°F. The sensor itself is compact, measuring 3 to 4 inches in length and only 0.01 to 0.03 inches thick.