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Durable Construction: Built to withstand the high-cycle demands of commercial and industrial HVAC environments
Precision Safety: High-sensitivity vent safety switch detects flue blockages to prevent CO poisoning
Using a standard socket wrench
meaning it will automatically close the circuit once the sensed temperature falls below the reset point
ensuring stability in unconditioned mechanical spaces
Lennox 12F19 Flame Sensor Durable Construction: Built to withstandThe Lennox 12F19 Flame Sensor is a critical safety component designed for precise flame rectify detection in residential and commercial gas fired heating systems. This genuine OEM part is engineered to monitor the burner's pilot or main flame, sending a continuous microamp signal to the furnace control board. If the 12F1901 furnace sensor fails to detect a flame, it immediately signals the gas valve to shut down, preventing hazardous gas accumulation.