Westinghouse 903979 Inducer Blower Motor M3 Furnace

Product Description

The WESTINGHOUSE 903979 is an inducer blower motor designed for 90-plus efficiency gas furnace applications. The inducer motor drives the combustion air blower assembly, pulling flue gases through the heat exchanger and exhausting them through the vent system before and during each heating cycle. This part includes a gasket for proper sealing at the blower housing interface. Installation is performed by licensed HVAC technicians during routine furnace service or when the original motor fails to start, runs intermittently, or draws excessive current.

This inducer blower motor is specified for use on the M3 Home Furnace platform. It fits into the induced-draft combustion system that is standard on high-efficiency condensing furnaces. Replacement is typically required when the original motor exhibits bearing noise, overheating, or failure to prove inducer operation to the integrated control board during the pre-purge sequence.

Key Features

• OEM-style replacement inducer blower motor for 90-plus efficiency gas furnaces
• Includes gasket for sealed mounting at the blower housing
• Designed for M3 Home Furnace platform applications
• Supports proper draft proving and pre-purge sequence operation

Compatibility

Designed as a direct OEM-style replacement for the M3 Home Furnace inducer blower assembly. No additional compatible model numbers were specified in the product data.

Installation Notes

Installation should be performed by a licensed HVAC technician. Disconnect all electrical power to the furnace at the disconnect switch and turn off the gas supply before beginning any service work. Remove the existing inducer assembly carefully, transfer or replace the gasket, and verify all electrical connections are secure before restoring power. Follow applicable local mechanical codes and the furnace manufacturer service documentation when completing the replacement.

Technical Specifications

• Type: Inducer Blower Motor
• Application: M3 Home Furnace
• Includes: Gasket

Standard Information

• Brand: WESTINGHOUSE
• Manufacturer Part Number: 903979