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Reliable Combustion Support: Provides the necessary draft for consistent pressure switch activation and safe burner operation
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Designed for single-phase compressor systems
Verified Fitment: Designed specifically for PG9MAA
Lennox 14A45 Pressure Switch 322838-754 Reliable Combustion Support: Provides theThe Lennox 14A45 Pressure Switch is a high precision, two stage OEM furnace replacement designed to ensure safe ignition and optimal inducer airflow. This dual pressure switch is factory calibrated with specific set points of . 50" and . 90" WC, acting as a critical safety limit that confirms the draft inducer is pulling sufficient vacuum before allowing the gas valve to open. As a direct replacement for the legacy Lennox 103613 03 and UniControl