Lennox 11W57 Variable Speed Furnace Motor 1/2 Hp

Product Description

The LENNOX 11W57 is a variable speed motor designed for residential furnace applications. Rated at 1/2 HP, it delivers precise airflow control by continuously adjusting motor speed to match the heating demand of the system. Variable speed operation reduces energy consumption compared to single-speed motors and supports quieter, more consistent blower performance. Licensed HVAC technicians install this motor as a direct replacement when the original blower motor fails or when upgrading an existing furnace blower assembly.

This motor is intended for use in forced-air furnace systems where variable speed blower control is specified. It is suited for residential installations requiring consistent static pressure management across varying load conditions. The 1/2 HP output rating makes it appropriate for mid-capacity furnace blower applications. HVAC service professionals replacing a failed OEM motor will find this unit compatible with the mechanical and electrical layout typical of variable speed furnace platforms.

Key Features

• Variable speed operation for continuous airflow adjustment and improved efficiency
• 1/2 HP output rating suited for residential furnace blower assemblies
• OEM-style replacement designed for direct installation into compatible furnace units
• Supports quieter system operation compared to fixed-speed motor alternatives

Compatibility

Designed as an OEM-style replacement variable speed blower motor for residential gas furnace systems.

Installation Notes

Installation should be performed by a licensed HVAC technician. Disconnect and lock out all electrical power to the furnace before removing the existing motor or accessing the blower compartment. Verify motor mounting orientation and electrical connector compatibility before completing the installation. Follow all applicable local codes and the furnace manufacturer service documentation during replacement.

Technical Specifications

• Motor Type: Variable Speed
• Horsepower: 1/2 HP
• Application: Furnace
• Weight: 12.5 pounds

Standard Information

• Brand: LENNOX
• Manufacturer Part Number: 11W57