Ruud 51-104356-09 Variable Speed Blower Motor 3/4 Hp

Product Description

The RUUD 51-104356-09 is a variable speed, direct drive blower motor designed for residential gas furnace applications. Rated at 3/4 HP and 120 VAC, 60 Hz, single-phase, this motor uses SelecTech variable speed technology to modulate airflow based on system demand. It is built on a 48Y frame with shell-band mounting, making it a purpose-built OEM replacement for forced-air heating systems. Licensed HVAC technicians typically perform this swap as part of a blower assembly service or motor failure diagnosis. At 15.45 pounds, the unit is a substantial direct drive assembly suited for standard residential furnace cabinets.

This motor is specified for use on RUUD R801C-MSA and R801T-MSA gas furnace models. Variable speed operation improves airflow consistency and can reduce noise compared to single-speed motors. The direct drive configuration eliminates belt and pulley components, reducing mechanical wear points. It is intended for forced-air gas furnace blower sections in residential installations where OEM motor specifications must be maintained for proper system performance and warranty compliance.

Key Features

• Variable speed SelecTech technology for demand-based airflow control
• 3/4 HP output on a 120 VAC, 60 Hz, single-phase power supply
• 48Y frame with shell-band mounting for OEM-style fitment
• Direct drive design eliminates belts and pulleys
• OEM replacement for RUUD R801C-MSA and R801T-MSA gas furnaces

Compatibility

Specified for use on RUUD R801C-MSA and R801T-MSA gas furnace models. Verify the existing motor frame, mounting type, horsepower rating, and voltage before installation to confirm fitment.

Installation Notes

Installation should be performed by a licensed HVAC technician. Shut off all electrical power to the furnace at the disconnect and confirm the circuit is de-energized with a meter before handling any wiring or removing the blower assembly. Secure shell-band mounting hardware to the manufacturer-specified method and confirm all electrical connections are tight and properly routed before restoring power. Follow applicable local codes and the furnace manufacturer service documentation throughout the replacement procedure.

Technical Specifications

• Motor Type: Variable Speed, Direct Drive Blower Motor
• Technology: SelecTech
• Horsepower: 3/4 HP
• Voltage: 120 VAC
• Frequency: 60 Hz
• Phase: 1-Phase
• Frame: 48Y
• Mounting: Shell-Band
• Height: 7.2 inches
• Width: 7.3 inches
• Length: 15.6 inches
• Weight: 15.45 pounds

Standard Information

• Brand: RUUD
• Manufacturer Part Number: 51-104356-09