773-286

Ensure the safety and efficiency of your heating system with this premium two-stage air pressure switch. Designed for modern high-efficiency gas furnaces, this air-proving switch monitors the vacuum pressure generated by the inducer motor to verify proper combustion airflow and venting. By sensing specific pressure thresholds, it acts as a critical safety limit, preventing the furnace from igniting if it detects dangerous venting conditions or mechanical failures. This dual-stage component is engineered for HVAC systems that operate at multiple speeds, providing precise monitoring for both low-heat and high-heat cycles. If your furnace is experiencing ignition lockout, frequent cycling, or failing to start, replacing a faulty pressure switch can restore reliable heating performance and ensure your home remains safe.
Type: Air Pressure Switch
Size: Small / Compact
Application: Used in residential two-stage gas furnaces and HVAC units to monitor inducer fan performance and ensure safe exhaust venting before allowing the ignition sequence to proceed.
Specifications: Two-stage operation; Low-stage set point: -0.08" WC; High-stage set point: -1.49" WC; Diaphragm-actuated safety sensor; Designed for multi-speed induction systems.