Description
US Motors 1090 Blower Motor Overview
The US Motors 1090 is a reliable, purpose-built blower motor engineered for residential and light commercial HVAC air-handling applications. Rated at 1/15 horsepower and operating on 115V AC single-phase power, this motor delivers consistent, efficient airflow across three selectable speeds — making it an ideal direct replacement for a wide range of furnace and air handler blower assemblies.
Key Specifications
- Horsepower: 1/15 HP
- Voltage: 115V AC
- Phase: Single Phase
- Speed: 1100 RPM, 3-Speed
- Amperage: 0.80 Amps
- NEMA Frame Size: 42Y
- Motor Type: Permanent Split Capacitor (PSC)
- Enclosure: Open Air Over (OAO)
- Bearing Type: Self-Aligning Ball Bearing
- Mount: Resilient Base Mount
- Shaft: Dual 1/2″ Diameter
- Rotation: Clockwise (CW) Lead End
Design & Construction
Built around a 42Y NEMA frame, the US Motors 1090 features a resilient base mount that minimizes vibration transmission to the surrounding cabinet — reducing noise and extending the service life of adjacent components. The open air-over (OAO) enclosure is designed for applications where the motor is cooled by the airstream it is moving, as is typical in blower and air handler installations. Self-aligning ball bearings ensure smooth, long-lasting operation even in demanding duty cycles.
Permanent Split Capacitor (PSC) Technology
As a Permanent Split Capacitor motor, the US Motors 1090 offers superior energy efficiency and quiet operation compared to shaded-pole alternatives. PSC motors maintain a run capacitor in the circuit at all times, providing higher power factor, improved torque characteristics, and reduced energy consumption — all critical advantages in continuous-duty HVAC blower applications.
Dual Shaft & Multi-Speed Flexibility
The dual 1/2″ shaft configuration allows for flexible installation in a variety of blower wheel setups, while the three-speed capability gives technicians the ability to fine-tune airflow to match system requirements. Clockwise rotation at the lead end is clearly specified to ensure proper blower wheel performance upon installation.
Applications
- Residential and light commercial furnace blowers
- Air handler and fan coil unit blower assemblies
- HVAC replacement motor applications requiring 42Y NEMA frame
- Systems requiring multi-speed airflow control
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