The Nidec-US Motors 8904 Blower Motor is a direct-drive permanent split capacitor (PSC) motor designed for residential and commercial HVAC fan and blower applications. Rated at 3/4 HP, 115 VAC, single phase, 60 Hz, this motor operates at 1075 RPM with three selectable speeds for matching system airflow requirements. The motor is rated at 9.5 amps and uses a 48Y NEMA frame.
This 3/4 HP HVAC blower motor features reversible rotation, continuous air-over duty, automatic-reset thermal overload protection, and band/hub/stud mounting. It uses a 1/2-inch shaft and a 15 MFD, 370 VAC run capacitor. Speed leads are color-coded black for high, blue for medium, and red for low, with white as common.
Before replacement, verify horsepower, voltage, amperage, RPM, rotation, mounting, shaft dimensions, capacitor requirements, and blower application against the original motor nameplate.
Key Benefits
Manufacturer: Nidec-US Motors
Part Number: 8904
Product Type: HVAC Blower Motor
Motor Type: PSC Direct-Drive
Horsepower: 3/4 HP
Voltage: 115 VAC
Phase: Single Phase
Frequency: 60 Hz
Amperage: 9.5 Amps
Speed: 1075 RPM
Number of Speeds: 3
Frame: 48Y NEMA
Rotation: Reversible
Mounting: Band / Hub / Stud
Capacitor: 15 MFD / 370 VAC
Duty: Continuous Air-Over
Thermal Protection: Automatic Reset
Common Questions
What are the specifications of the Nidec-US Motors 8904? The 8904 is a 3/4 HP, 115V, single-phase, 1075 RPM, three-speed PSC blower motor rated at 9.5 amps.
Is the Nidec-US Motors 8904 rotation reversible? Yes. The motor is designed with reversible rotation for compatible HVAC blower applications.
What capacitor does the Nidec 8904 require? The specified run capacitor is 15 MFD, 370 VAC.
What are the three speed-wire colors? Black is high speed, blue is medium speed, red is low speed, and white is common.
Can I use the Nidec 8904 as a replacement for my existing blower motor? Compatibility should be confirmed by comparing the original motor specifications, including 3/4 HP, 115V single-phase power, 1075 RPM, amperage, rotation, 48Y frame, mounting arrangement, shaft dimensions, and capacitor rating.
How should I confirm compatibility before ordering? Check the original motor nameplate and equipment requirements. Do not select a replacement motor based only on horsepower and voltage.
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.
