773-307

This premium 2-stage air pressure switch is a critical safety component designed for modern high-efficiency gas furnaces. Functioning as an air proving switch, it monitors the negative pressure generated by the draft inducer motor to ensure proper venting of combustion gases before the heating cycle begins. If your furnace is short-cycling or failing to ignite due to pressure sensor errors, this dual-stage switch provides the reliable detection needed for both low-fire and high-fire operations. Crafted for precision and durability, it helps maintain optimal HVAC performance and ensures your heating system operates safely and efficiently.
Type: Air Pressure Switch
Size: Small
Application: Used in residential two-stage gas furnaces and HVAC heating systems to monitor draft inducer airflow and ensure safe combustion exhaust.
Specifications: 2-Stage configuration; Dual setpoints: -0.25" WC and -0.50" WC; Designed for negative pressure sensing in high-efficiency heating applications.