Lennox 78F92 Motor

The Lennox 78F92 blower motor is a purpose-built OEM replacement motor designed for high-static residential and light commercial air handlers and furnaces. Engineering specifications include a 3/4 HP motor rating operating at 208-230V and a nominal speed of 1075 RPM. This single-phase HVAC motor features a reversible rotation capability, though factory-configured for CCWLE rotation, providing the necessary torque for consistent airflow across evaporator or heat exchanger coils. As a permanent split capacitor (PSC) motor, it requires a 10 MFD 370 VAC capacitor for proper phase shift and starting torque. The rugged 48 frame construction and sleeve bearing design ensure localized vibration dampening and quiet operation in horizontal mounting positions. This NEMA 48 frame blower motor is a direct drop-in for Lennox 78F9201, maintaining factory efficiency and system static pressure balance without the need for bracket modifications.

Key Benefits

• Precise OEM Compatibility: Engineered as a direct Lennox 78F9201 replacement to ensure exact shaft alignment and electrical lead integration.
• High-Efficiency Performance: The 3/4 HP 1075 RPM rating maintains the specified CFM requirements for optimized heat transfer.
• Multi-Speed Versatility: Features a 3-speed tap configuration, allowing for precise air balancing during system commissioning.
• Durable Construction: Built with a heavy-duty frame and high-grade copper windings to withstand high-demand thermal cycles.

Common Questions What are the electrical requirements for the Lennox 78F92 motor? This motor operates on 208-230V single-phase power at 60Hz. It is essential to use a new 10 MFD 370V run capacitor to ensure the 78F92 blower motor maintains its rated 1075 RPM and prevents winding overcurrent. Can the rotation of this motor be changed in the field? Yes, the Lennox 78F92 is a reversible HVAC motor. While it typically ships for CCWLE applications common in Lennox air handlers, the lead configuration can be swapped to match the specific blower wheel rotation required for your furnace or package unit. What frame size is the 78F92 and will it fit standard mounts? This is a standard 48-frame motor with a 1/2-inch diameter shaft. It utilizes a rigid base or hub ring mounting system, making it compatible with most Lennox furnace motor brackets found in residential split systems.

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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.