Nordyne 632445R Pressure Switch

For field technicians and contractors managing residential HVAC units, the Nordyne 632445R Pressure Switch is the mandatory OEM replacement part for ensuring safe furnace inducer motor operation. This single-pole single-throw (SPST) switch is factory-calibrated to a -1.10" WC (water column) setpoint, critical for monitoring vacuum pressure within the combustion assembly. As the direct updated version of the 632445, it carries forward the same 1/4 barbed connection for seamless pneumatic line integration without requiring field modifications. In high-efficiency and standard gas furnaces, this Nordyne pressure switch serves as a primary safety interlock, verifying correct drafting before the ignition sequence initiates. Whether you are servicing Intertherm, Miller, or Broan equipment, maintaining exact spec tolerances like this -1.10" WC rating is essential to prevent intermittent lockout codes and ensure reliable HVAC pressure control during peak heating cycles.

• OEM Compatibility: Engineered as a direct drop-in for Nordyne 632445, ensuring electrical and mechanical alignment.
• Precise Calibration: Fixed -1.10" WC setpoint maintains strict adherence to manufacturer safety protocols.
• Standardized Fittings: Features a 1/4 barbed connection for quick, secure attachment to existing vacuum hoses.
• Broad Brand Support: Designed for use across various brands including Maytag, Gibson, and Tappan furnace models.

• Is the 632445R compatible with older 632445 units? Yes, the 632445R is the official updated replacement for the original 632445 part number.
• What does a -1.10" WC rating signify? This indicates the specific vacuum pressure required to close the SPST switch and allow the furnace to proceed to ignition.
• Can this be used on other brands? While widely used in Nordyne/Nortek equipment, compatibility depends entirely on the -1.10" WC requirement and barbed port size.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.