Armstrong Air 57W79 Furnace Air Pressure Switch (0.70" WC)

Armstrong Air 57W79 Furnace Air Pressure Switch (0.70" WC)Armstrong Air 57W79 Pressure Switch 0. 70" WC OEM Replacement for 101432 14 The Armstrong Air 57W79 Pressure Switch is an OEM certified safety control designed to ensure proper airflow in gas furnace systems before ignition occurs. Calibrated to trip at 0. 70 inches water column (WC), this switch verifies that the inducer fan is creating adequate draft pressure, helping prevent burner operation under unsafe conditions. This pressure switch is factory

Armstrong Air 57W79 Pressure Switch – 0.70" WC OEM Replacement for 101432-14

The Armstrong Air 57W79 Pressure Switch is an OEM-certified safety control designed to ensure proper airflow in gas furnace systems before ignition occurs. Calibrated to trip at 0.70 inches water column (WC), this switch verifies that the inducer fan is creating adequate draft pressure, helping prevent burner operation under unsafe conditions.

This pressure switch is factory-tested for accuracy and includes a green identification label for quick field reference. It’s a direct replacement for part 101432-14 and several other legacy numbers, offering reliable performance in Armstrong Air and allied brand HVAC systems.

Key Features:

• OEM pressure switch for Armstrong Air furnaces

• Rated for 0.70" WC negative pressure

• Monitors inducer airflow before furnace ignition

• Helps prevent startup failures and ensures combustion safety

• Comes with green label for model verification

• Ideal for replacing faulty or inconsistent switches

Alternate / Replacement Part Numbers:

• 57W7901

• 101432-14

• 10143214

• 9370DO-BS-0020

• R45695-004

Whether you're servicing a pressure fault or performing scheduled maintenance, the 57W79 switch offers dependable airflow verification for consistent heating performance.