Westinghouse 632495R Furnace Pressure Switch 0.80 in Wc Spst

Product Description

The WESTINGHOUSE 632495R is a furnace pressure switch rated at 0.80 inches water column (WC), designed as a safety and proving component in residential gas furnace systems. This single-pole, single-throw (SPST) switch monitors negative pressure generated by the inducer motor during the combustion cycle. When proper draft pressure is confirmed, the switch closes to allow ignition to proceed. HVAC technicians install and replace this switch as part of routine furnace service or when diagnosing inducer or venting faults. The single-port design connects to one pressure sensing tap on the inducer housing or condensate assembly.

This pressure switch is specifically used on the G7SC-1 Upflow/Horizontal Furnace configuration. It is suited for residential forced-air gas furnace installations where the appliance is oriented in an upflow or horizontal position. Technicians servicing furnaces in tight utility closets, attic installations, or horizontal crawlspace applications will encounter this configuration regularly. Always confirm the setpoint and port count match the original switch before installation.

Key Features

• 0.80 inches WC setpoint for accurate draft pressure proving
• SPST switching configuration for straightforward circuit integration
• Single-port design for direct connection to inducer pressure tap
• Compatible with G7SC-1 Upflow/Horizontal Furnace application
• Functions as a safety interlock to prevent ignition without confirmed draft

Compatibility

Designed for use on the G7SC-1 Upflow/Horizontal Furnace as specified by the manufacturer.

Installation Notes

A licensed HVAC technician should perform this replacement in compliance with local mechanical codes and the appliance manufacturer's service instructions. Disconnect power to the furnace and shut off the gas supply before removing the existing switch. Verify the pressure port tubing is free of cracks, moisture blockage, or debris before connecting the new switch. Do not bypass or jumper a pressure switch as a diagnostic shortcut in a live system.

Technical Specifications

• Pressure Setpoint: 0.80 inches WC
• Switch Type: SPST (Single-Pole, Single-Throw)
• Port Configuration: Single Port
• Application: G7SC-1 Upflow/Horizontal Furnace

Standard Information

• Brand: WESTINGHOUSE
• Manufacturer Part Number: 632495R