773-326

The Lennox Pressure Switch (0.80" WC) is a critical safety component designed for residential gas furnaces and HVAC systems. This air proving switch ensures that the inducer motor is creating the necessary draft to safely exhaust combustion gases before the ignition cycle begins. If your heating system is failing to ignite or displaying pressure switch-related error codes, this replacement part is essential for restoring reliable operation. Engineered for precision, it monitors the atmospheric pressure within the combustion chamber to prevent the buildup of dangerous fumes, ensuring your furnace operates at peak safety and efficiency.
Type: Air Pressure Switch
Size: Small
Application: Commonly used in gas furnaces and heating equipment to verify proper airflow and venting during the ignition sequence.
Specifications: 0.80 inch Water Column (WC) trip point; air-proving functionality; single-pole design.