Lennox 13H39 Motor

The Lennox 13H39 Blower Motor is a heavy-duty Nidec 13H3901 OEM replacement engineered for high-static residential and light commercial air handlers. This 3/4 HP HVAC motor operates on a 208-230V single-phase power supply at a standard 1075 RPM. Designed as a Permanent Split Capacitor (PSC) motor, it features a 5-speed tap configuration, allowing for precise airflow balancing across various heating and cooling stages. The 48Y frame motor utilizes a CCWLE rotation (Counter-Clockwise Lead End) and a 1/2-inch by 2.2-inch shaft, ensuring a direct fit for Lennox furnace blower motor assemblies and select Allied, Armstrong, and Ducane units.

For professional installation, this multi-speed blower motor requires a 20 MFD 370 VAC capacitor to maintain optimal torque and thermal efficiency. The internal sleeve bearings are designed for horizontal mounting, providing quiet operation and reduced vibration in high-duty cycle environments. With a full load amperage rating of 3.9-4.6 Amps, the Lennox 13H39 provides the necessary lift for systems requiring robust static pressure performance without compromising electrical efficiency.

• Precise Airflow Control: The 5-speed design enables fine-tuning of CFM delivery to match system requirements.
• Direct OEM Fit: Drop-in Lennox 13H3901 replacement for 48-frame blower housings, reducing field modification time.
• Industrial Build Quality: Features thermally protected windings and sleeve bearings optimized for 208-230V service.
• Broad Compatibility: Cross-references with Emerson US Motors LX7924 and various Armstrong/Ducane models.

What is the rotation for the Lennox 13H39 motor?
This motor is CCWLE (Counter-Clockwise Lead End), which is standard for most Lennox-style direct drive blower wheels.

Does this motor require a specific capacitor?
Yes, for proper phase shift and starting torque, you must use a 20 MFD / 370V capacitor. Using an undersized or aged capacitor may lead to premature winding failure.

Can I use this to replace a single-speed motor?
While technically possible if the 3/4 HP and 1075 RPM specs match, you must ensure your control board or fan relay is wired correctly to handle the multi-tap speed leads.

This item is not eligible for free shipping.

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.