Furnace Air Pressure Switch – Honeywell C341825P42 / C341825P45

Furnace Air Pressure Switch Specifications – Honeywell C341825P42 / C341825P45 Condition: Used – Cleaned and Fully Functional Manufacturer: Honeywell Product Type: Furnace Air Pressure Switch (Dual / Two-Stage Setup) Application Type: HVAC Safety Device – Airflow / Draft Verification Compatible Furnaces: High-efficiency gas furnaces requiring two-stage airflow monitoring Component Details: Part Number Pressure Rating Description C341825P42 1.25" WC OEM furnace replacement air pressure switch (low stage) C341825P45 2.10" WC Furnace air pressure switch for higher stage operation Function & Application: Monitors proper airflow from the inducer motor before furnace ignition Ensures safe operation of high-efficiency two-stage furnaces Prevents furnace operation if airflow or draft is insufficient Dual setup supports low-fire and high-fire stage verification Electrical & Mechanical Notes: Typically wired in low-voltage HVAC control circuits (24V AC) Normally open / Normally closed contacts depending on furnace configuration Direct OEM replacement for Honeywell air pressure switches Key Features: Dual-stage airflow monitoring Factory-calibrated pressure setpoints for safety OEM Honeywell design for reliability and longevity Easy replacement for Carrier, Bryant, Payne, and other high-efficiency furnaces Protects inducer motors and furnace combustion systems Condition: Used - Like new Curbside pick up: Yes