Lennox 10M78 Blower Motor

The Lennox 10M78 is a 1 HP variable-speed blower motor designed for compatible Lennox HVAC equipment requiring a programmed ECM motor. It is identified as Lennox catalog number 10M78 and manufacturer part number 104758-07.

This Lennox ECM blower motor operates on 120/240 VAC, single-phase, 50/60 Hz power and provides variable-speed operation up to 1250 RPM. The motor is rated at 11.5/6.9 amps and uses a 48-frame configuration with ball bearings, reversible rotation, horizontal positioning, and belly-band mounting. The shaft measures 1/2 inch × 4.5 inches.

Because this is a programmed ECM motor, compatibility can be application-specific. Contractors should verify the complete equipment model and serial number along with the original motor part number before ordering. Confirm the voltage, programming, mounting arrangement, shaft dimensions, rotation, electrical connections, and control requirements.

Key Benefits

• Genuine Lennox 10M78 blower motor
• Manufacturer part number: 104758-07
• 1 HP ECM variable-speed motor
• 120/240 VAC, single-phase, 50/60 Hz
• Variable speed up to 1250 RPM
• 11.5/6.9 amp rating
• 48-frame motor
• Belly-band mounting
• Reversible rotation
• Ball bearing construction
• 1/2 inch × 4.5 inch shaft

Common Questions

What type of motor is the Lennox 10M78?
The 10M78 is a 1 HP programmed ECM variable-speed blower motor, Lennox part number 104758-07.

What voltage does the Lennox 10M78 use?
It is rated for 120/240 VAC, single-phase, 50/60 Hz operation.

What is the speed of the Lennox 10M78?
The motor provides variable-speed operation up to 1250 RPM.

Can I replace another Lennox blower motor with the 10M78?
Compatibility should be verified using the complete equipment model and serial number and the original motor part number. Programmed ECM motors can be application-specific, so horsepower or physical dimensions alone should not be used to determine compatibility.

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.

This item is not eligible for free shipping.