you know that combustion performance starts with precise fuel metering

monitoring the internal cabinet air temperature to prevent heat exchanger damage and system overheating

Common Questions: How many microamps should a York flame sensor produce

requiring a technician to physically inspect the heat exchanger and burner assembly for venting issues or blockages before restoring operation

Field-tested for long-term cycling

Lennox 24W97 Pressure Switch you know that combustion performanceThe Lennox 24W97 Pressure Switch is a critical safety component designed for high performance monitoring of the ventor motor's vacuum levels. This OEM Lennox furnace part features a precise . 40" WC actuation point, ensuring that the burner ignition sequence only initiates when the inducer fan establishes optimal airflow. Built with a Single Pole Single Throw (SPST) configuration, it is rated for 24V AC systems at 5 Amps resistive, making it a