Westinghouse 904574 Furnace Vent Switch Kit

Product Description

The WESTINGHOUSE 904574 is a vent switch kit designed for use in gas furnace applications where the inducer and limit circuit require reliable pressure-sensing protection. This kit provides the components needed to monitor flue gas venting conditions, helping ensure safe furnace operation by detecting blocked or inadequate vent flow. It is installed by licensed HVAC technicians during routine service calls or as part of a component-level repair on affected furnace models.

This vent switch kit is used on L1RC and G6TC/L series gas furnaces. It is suited to residential heating applications where the original vent switch has failed or requires replacement as part of a broader inducer or limit system repair. Technicians servicing these furnace platforms will find this kit a direct-fit solution for restoring proper venting safety circuit function.

Key Features

• Complete vent switch kit for inducer and limit circuit applications
• Designed for use on L1RC and G6TC/L furnace models
• Supports proper flue venting protection and pressure sensing
• OEM-style replacement for simplified installation

Compatibility

Designed for use on L1RC and G6TC/L series gas furnaces as stated by the manufacturer.

Installation Notes

Installation should be performed by a qualified HVAC technician. Disconnect power to the furnace and shut off the gas supply before beginning any service work. Verify that the replacement switch matches the pressure specifications of the original component before installation. Follow all applicable local codes and manufacturer service documentation when reconnecting the venting and electrical circuits.

Technical Specifications

• Type: Vent Switch Kit
• Used On: L1RC, G6TC/L Furnace

Standard Information

• Brand: WESTINGHOUSE
• Manufacturer Part Number: 904574