Nordyne 632444R Pressure Switch

The Nordyne 632444R Pressure Switch is an essential safety component for residential condensing furnaces and draft inducer systems. This factory-authorized OEM furnace pressure switch is a single-pole single-throw (SPST) device preset to a precise -1.74" WC setpoint. It is designed to verify proper combustion air and inducer motor performance before allowing the ignition sequence to initiate. This specific model features a 1/4" barbed connection for standard vacuum tubing and is the primary 632252 replacement switch for Nordyne, Miller, and Intertherm units. As a high-reliability inducer air pressure switch, it ensures the furnace operates within narrow technical tolerances to prevent venting hazards. This part is critical for maintaining the safety loop in high-efficiency heating systems. Since it replaces obsolete part numbers 632252 and 632444, it offers a direct fit for contractors servicing older Nortek manufactured equipment.

Key Benefits:

• Ensures reliable system safety by requiring a precise -1.74" water column vacuum before burner ignition.
• Features a durable 1/4" barbed vacuum port to secure standard induction tubing without leaks.
• Serves as a high-compatibility Nortek replacement part, superseding discontinued models 632252 and 632444.
• Simplifies repairs for Intertherm and Miller furnaces where exact OEM electrical specifications are required.

Common Questions:

How do I verify if the 632444R is compatible with my furnace?
Verify the setpoint (-1.74" WC) and electrical configuration (SPST) on the data plate of your existing switch. This part is the direct OEM replacement for Nordyne/Miller parts 632252 and 632444.

What are the symptoms of a failing pressure switch?
Common indicators include the inducer motor running continuously without the burner igniting, or the control board flashing a 2-flash or 3-flash error code related to pressure switch stuck open or closed conditions.

Can I use an adjustable switch instead of the Nordyne 632444R?
For safety and proper gas valve timing, always use a fixed -1.74" WC pressure switch that matches the original manufacturer's specifications. Using the incorrect setpoint can lead to incomplete combustion or dangerous venting failures.

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.