Westinghouse 632595R Furnace Pressure Switch 0.65/0.28 Wc 2 Stage

Product Description

The WESTINGHOUSE 632595R is a normally open furnace pressure switch rated at 0.65/0.28 inches water column (WC), designed for 2-stage condensing and non-condensing gas furnace applications. Furnace pressure switches monitor negative pressure generated by the inducer motor, confirming proper draft before allowing the control board to proceed with ignition. This switch features a dual-stage setpoint to match the two firing rates of a 2-stage furnace. Licensed HVAC technicians install and replace this component as part of routine diagnostic and maintenance service on residential gas furnace systems.

This pressure switch is specified for use on WESTINGHOUSE PGC2 2-Stage Condensing and Non-Condensing Furnace models. It is designed to operate in the proving circuit of the inducer assembly, where it signals the integrated furnace control board when adequate draft pressure is established at each stage of operation. Replacement is commonly required when the switch fails to close at the rated setpoint, causing lockout faults or preventing burner ignition on one or both stages.

Key Features

• Dual setpoint operation: 0.65 inches WC and 0.28 inches WC for 2-stage furnace compatibility
• Normally open configuration — closes on proof of adequate inducer draft pressure
• Designed for both condensing and non-condensing PGC2 furnace platforms
• Direct OEM-style replacement for simplified service and reliable performance
• Functions within the inducer proving circuit to support staged ignition sequencing

Compatibility

Specified for the WESTINGHOUSE PGC2 2-Stage Condensing and Non-Condensing Furnace series. Verify the pressure setpoint and port configuration against the original switch before installation.

Installation Notes

A licensed HVAC technician should perform this replacement. Shut off electrical power to the furnace at the disconnect or breaker before removing any components. Pressure switch hose connections should be inspected for cracks or blockages during replacement, as a compromised hose can cause the same fault symptoms as a failed switch. Follow applicable local mechanical codes and the furnace manufacturer service instructions when reinstating the unit to operation.

Technical Specifications

• Type: Pressure Switch
• Pressure Setpoints: 0.65 / 0.28 inches WC
• Switch Action: Normally Open (NO)
• Stages: 2-Stage
• Application: Condensing and Non-Condensing Gas Furnace

Standard Information

• Brand: WESTINGHOUSE
• Manufacturer Part Number: 632595R