Hermetic Motors
A. O. Smith is North America's leading independent supplier of hermetic motors for air conditioning and commercial refrigeration compressors. Quality A.O. Smith hermetic motors are used by many of the world's leading manufacturers of residential central air conditioners, commercial air conditioning equipment, commercial chillers, and heat pumps, as well as makers of walk-in coolers and refrigerated display cases.
From 5.5 inches to more than 15 inches in diameter and ranging in output from 1/2 to 500 horsepower, these precision rotor and stator units are engineered to withstand extremes in temperature, caustic and corrosive refrigerants and solvents, and deliver years of reliable service.
Fractional Horsepower Motors
Durable fractional horsepower motors are available in sizes ranging from 1/20th to five horsepower and include split-phase, permanent split capacitor, capacitor start, and polyphase models. We offer fractional horsepower motors for a wide range of residential and commercial applications:
Heating And Cooling Equipment
Universal lectricä Blowers: A.O. Smith shaded pole, permanent split capacitor and split phase induction motors are used in residential and commercial furnace blowers. Our 5 and 51/2 inch diameter motors are designed for direct-drive and belt-driven applications and come in a wide variety of mounting configurations.
Furnace and air conditioner fans: When quality, dependability, and innovative features count, count on A.O. Smith fan motors. 42-frame and 48-frame permanent split capacitor motors come in a variety of enclosures and mounting configurations. They are designed to stand up to the challenges of weather, humidity, and corrosive chemicals. Universal Electric motors offer quality, functionality, and economy in blower and draft inducer applications.
Replacement motors: A.O. Smith distributes a full line of quality A.O. Smith and Universal Electric replacement motors for HVAC applications. All replacement motors are designed to meet the original manufacturers' specifications for size and performance. Look in the Yellow Pages for heating and cooling contractors and electric motor supply houses that carry these fine products.
For more information, please refer to Catalog #150 on our "Catalogs" page.
Pools, Spas, And Jetted Tubs
A. O. Smith serves the pool and spa industry with a comprehensive line of switch and "switchless" electric motors that are designed to stand up to the weather, dirt, and pool chemicals. A. O. Smith's Conservationist motor combines our two-compartment design and a proven switch that provides years of reliable service. The Centurion line of two-pole 56 frame switchless pool motors bring dependability and economy to pool, spa, and jetted tub pumping applications. Our switchless design eliminated the majority of moving parts found in these motors, enhancing reliability. Neptune leisure water motors offer a unique 48 frame two compartment design with a tamper-proof switch and governor. Commander pool and spa motors meet European IEC standards. These quality motors are designed to the same specifications as the motors found in your equipment.
For more information, please refer to Catalog 1081 and 1082 on our "Catalog" page.
Pumps
Domestic water systems. 48 frame, two-compartment jet pump motors run quietly and reliably in above-ground jet pumps. The end-mounted switch offers ease of access and added conveience in these applications. Extensive testing helps determine that our jet pump motors can stand up to the constant starting and stopping and intermittent running times.
Sump, sewage and sprinkling pumps. A. O. Smith motors do the work in applications ranging from upright cellar drainers, immersible sump pumps, effluent and sewage pumps.
Specialty pump motors. A. O. Smith and MagneTek offer spark-proof and explosion-proof pump motors for gasoline pumps and related applications.
For more information, please refer to Catalog 1081 and 1082 on our "Catalog" page.
Other Applications
Residential and commercial ventilation. A. O. Smith offers a comprehensive line of fractional horsepower motors that provide the mechanical power to drive exhaust ventilators, attic exhaust fans, evaporative coolers, circulating fans, and industrial blowers. Ventilation motors range in size from 1/20th to 3 horsepower.
General purpose fractional horsepower motors. 42 and 48 frame reversible rotation motors designed for residential or commercial garage door and gate openers. Capacitator-start 48-frame and 56-frame rigid base motors for industrial farm applications. 56-frame open drip-proof motors for air compressors. We also make a wide variety of specialty motors, including totally enclosed fan-cooled (TEFC) and explosion-proof models.
Subfractional Horsepower Motors 
Compact, reliable C-frame subfractional motors are single coil, two pole shade pole style products. They are used in a wide range of air-moving applications where size and cost matter most such as bathroom and kitchen ventilation fans, appliances (microwave and convection oven fans, refrigerator evaporative cooler fans, dishwashers, and humidifiers), and portable medical equipment.
Blowers
complete line of crossflow/tangential and centrifugal blowers and induced draft combustion blowers is available from 20 cubic feet per minute (CFM) airflow to over 1200 CFM. These are typically used for electronic cooling, exhaust blowers, wood stoves, fireplace inserts and draft inducers.
In addition axial and radial flow fans for our subfractional C-Frame motors are available. The typical applications for these are refrigerators, duct air boosters, convection ovens and dishwashers.
Integral Horsepower AC Motors
These motors, designed for industrial and commercial applications, range in size from one horsepower to 400 horsepower for general purpose applications and up to 800+ horsepower for custom designs. They are available in two-pole, four-pole or six-pole configurations from stock, as well as, eight-pole and slower as custom designs. This product line includes open dripproof, totally enclosed fan cooled (TEFC), TEFC-severe duty, IEEE 841, explosion proof and inverter duty operation models. Our specialty product line includes washdown models for food service applications and motors designed for use with variable frequency drives.
Century® Commercial and Industrial Motors
General Purposes
- 1 - 400 Horsepower
- Rugged Century® and Century® Industrial are the backbone of our commercial and industrial line. These integral horsepower motors come in a wide range of ratings with styles and special features that make them the leading choice in tough industrial applications.
- Century® E-Plus and E-plus 3® motors offer energy-efficient designs and value-added features for industrial blower, pump, compressor, and conveyer equipment. These totally enclosed fan-cooled (TEFC) motors are designed for continuous duty and come in sizes ranging from 20 through 400 horsepower.
- Speed Engineered® inverter-duty motors are designed, built, and tested to be 100 percent corona free. These motors were developed for use with variable frequency drives and offer the special corona protection that traditional motors can't provide.
Special Purpose and Custom Design
- 1 - 800+ Horsepower
- Multi-Mount motors offer special features such as C-flange, drip covers, vertical and horizontal mounting options, and easy brake kit installation. Their versatility and dependability make them the motor of choice for numerous customers.
- Rapid Response Center - Many of our motors may be easily and quickly adapted to your small lot special needs in the A.O. Smith Rapid Response Center located in LaVergne (Nashville), Tennessee.
- These unigue products celebrate their 100th year of providing custom AC motor technology to machinery manufacturers worldwide.
- A.O. Smith designs, builds and tests at the McMinnville, Tennessee custom motor center.
Designs include:
- Water-cooled wound rotor
- Synchronous induction
- Copper bar rotor
- High-Speed
- High torque/slip
- Washdown
Applications include:
- Crane-hoist
- Elevator
- Laundry machinery
- Machine tool
- Offshore drill rigs
- Clean room ventilation
- Pumps, fans & compressors
- DC Motors
DC Motors
These durable permanent magnet and wound field motors range from 1/8 to 5 horsepower in open TENV and TEFC designs. A wide range of choices exist for general purpose applications, sealed washdown motors for food processing and food service, IEC metric motors, special purpose servo motors as well as low voltage and custom designs. Plus A.O. Smith offers a variety of options for DC motor speed control.
