Lennox 33W87 Motor

The Lennox 33W87 is an OEM standard-efficiency PSC blower motor designed for direct-drive applications in residential and light commercial air handlers and furnaces. Operating at 208-230V single-phase power, this 1/4 HP HVAC motor delivers a consistent 1075 RPM, effectively moving air through multi-speed configurations. Built with a NEMA 48 frame and a sleeve bearing system, it utilizes a belly band mounting orientation for horizontal installations. As a high-performance direct drive motor, it serves as a precise drop-in replacement for worn-out induction motors, ensuring the static pressure requirements of your furnace or air handler are met without excessive amperage draw. With a rated current of 1.7A and a requirement for a 10 MFD 440V capacitor, this Lennox replacement motor maintains OEM airflow profiles to prevent heat exchanger overheating or coil icing.

Key Benefits

• Verified Compatibility: Direct OEM replacement for part numbers 33W8701 and 100792-05, ensuring exact fitment in Lennox, Armstrong, and Ducane equipment.
• Optimized Performance: Features a 3-speed design to accommodate various heating and cooling airflow stages.
• Durable Construction: The 5.6-inch diameter 48-frame housing is engineered for standard belly band brackets.
• Efficient Airflow: 1/2-inch by 2.5-inch shaft supports standard blower wheel hubs for vibration-free operation.

Common Questions

What capacitor does the Lennox 33W87 require?
This motor requires a 10 MFD / 370-440 VAC run capacitor for proper torque and current regulation.

Can I use this to replace a 115V motor?
No, this is a 208/230V 1-Phase motor. Verifying supply voltage at the terminal block is required before installation.

Does this motor include the mounting bracket?
No, this is a motor-only replacement designed for use with your existing belly band or motor mount assembly.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.