The Lennox 81W64 blower motor (part number 604253-03) is a genuine OEM replacement motor engineered for reliable, high-performance air movement in commercial and heavy-duty HVAC systems. Designed to meet Lennox factory specifications, this 1 horsepower blower motor delivers consistent airflow across multiple speed settings, making it suitable for furnaces, air handlers, and other air-moving equipment requiring precise control and dependable operation.

Operating on 460 volts, this motor is built for demanding applications where durability and efficiency are critical. The 5-speed configuration allows flexibility in airflow adjustment, with an operating range of approximately 600 to 1200 RPM to support various system requirements. Using an original Lennox motor helps maintain proper system performance, electrical compatibility, and long-term reliability compared to universal or aftermarket alternatives.

This blower motor is intended for professional HVAC installation. Compatibility should always be verified using the unit model number or manufacturer documentation prior to purchase.

Product overview
The Lennox 81W64 blower motor is an OEM HVAC motor designed to replace worn or failed blower motors in compatible Lennox systems. It provides powerful airflow, multiple speed options, and stable operation for commercial and residential HVAC applications that require a 460V motor.

 

Specification:

Manufacturer: Lennox
Part number: 81W64
Alternate part number: 604253-03
Motor type: Blower motor
Horsepower: 1 HP
Voltage: 460 Volts
Speed: 5 speed
RPM range: 600–1200 RPM (approximate)
Application: HVAC blower assemblies, furnaces, air handlers
Condition: New, genuine OEM
Installation: Professional installation recommended