A.O. Smith HF3G039N AC Fan Motor

The AO Smith HF3G039N AC Fan Motor is a compact, 1/4-horsepower blower motor designed for 115V AC service in residential HVAC equipment. Operated from a standard 60 Hz supply, it delivers approximately 1100 RPM to move air in air handlers, furnaces, and other blower assemblies that require a small, reliable motor. This model is documented in distributor listings as a 115V, 60 Hz, 1/4 HP motor and has been listed by AO Smith sources as discontinued by the manufacturer. Common applications include replacement in small- to mid-size HVAC blowers and air-handling units where a quiet, dependable motor is appropriate. When selecting a replacement, verify that your equipment’s voltage and frequency align with 115V AC and 60 Hz to ensure proper fit and operation.