Nordyne 632673 Inducer Pressure Switch

Description

Nordyne 632673 Inducer Pressure Switch Overview

The Nordyne 632673 is an OEM inducer pressure switch designed to provide reliable, accurate monitoring of draft inducer operation in Nordyne-brand heating systems. This pressure switch serves as a critical safety control, confirming that the inducer blower has established the correct negative pressure before allowing the ignition sequence to proceed — protecting the heat exchanger and ensuring safe combustion.

Key Features

• OEM replacement part engineered specifically for compatible Nordyne furnace models
• Monitors negative pressure created by the draft inducer motor to verify proper airflow
• Prevents ignition if adequate inducer pressure is not established, protecting against unsafe operation
• Direct drop-in replacement for fast, straightforward installation
• Durable construction built to withstand the demands of residential and light commercial heating applications

How It Works

The inducer pressure switch is a diaphragm-operated safety device connected to the inducer housing via a rubber hose. When the draft inducer motor runs, it creates a negative pressure (vacuum) that deflects the diaphragm and closes the switch contacts — signaling the control board that safe venting conditions exist. If the required pressure differential is not achieved, the switch remains open and the furnace will not proceed to ignition, preventing flue gas spillage and potential carbon monoxide hazards.

Application

• Compatible with select Nordyne-brand gas furnaces — verify your model number before ordering
• Ideal for HVAC technicians performing routine maintenance, safety inspections, or component-level repairs
• Suitable for residential and light commercial heating system service

Why Choose an OEM Pressure Switch?

Using a genuine Nordyne OEM pressure switch ensures the correct set-point calibration, connector compatibility, and long-term reliability. Aftermarket substitutes may not match the precise pressure rating required for your specific furnace model, potentially leading to nuisance lockouts or unsafe operation.

Ordering Information

• Brand: Nordyne
• Part Number: 632673
• Part Type: Inducer Pressure Switch