Description
US Motors 8442UI — 3/4HP Open Air Over Motor
The US Motors 8442UI is a 3/4 horsepower, open air-over (OPAO) motor engineered for demanding direct-drive fan and blower applications in HVAC systems. Running at 1800 RPM, this motor delivers consistent, dependable performance across a wide range of commercial and residential installations.
Open Air Over Design
The OPAO (Open, Air Over) construction means the motor is cooled by the airstream generated by the fan or blower it drives — eliminating the need for a separate internal cooling fan and reducing overall motor complexity. This design is ideal for applications where the motor is mounted directly in the airflow path, such as evaporator coil fans, condenser fans, and direct-drive blower assemblies.
Key Features
- 3/4 HP output for reliable fan and blower drive capability
- 1800 RPM synchronous speed — smooth, efficient operation
- Open Air Over (OPAO) construction — airstream-cooled for in-duct and in-airflow mounting
- Direct-drive design simplifies installation and reduces maintenance
- Built to US Motors’ exacting quality and durability standards
- Suitable for commercial and residential HVAC fan/blower duty
Application
The 8442UI is well-suited for use in air handlers, fan coil units, evaporator blower assemblies, and other direct-drive HVAC fan applications where a compact, air-cooled open motor is required. Its 1800 RPM speed makes it a versatile choice for a broad range of fan wheel sizes and system configurations.
Why Choose US Motors?
US Motors, a brand of Nidec Motor Corporation, is a trusted name in HVAC motor technology with decades of proven performance in the field. The 8442UI continues that tradition — offering contractors and technicians a dependable replacement or new-installation motor backed by a reputable manufacturer.
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