Wagner Motors wg840587 Furnace Blower Motor 1/2 Hp 115V

Product Description

The WAGNER MOTORS wg840587 is a 1/2 HP direct drive furnace blower motor rated at 115 volts AC. It is designed for continuous duty air-over applications in residential forced-air heating systems. The motor features an automatic thermal overload protector and Class B insulation, making it a reliable replacement for standard 48 frame blower assemblies. It operates in a quiet, electrically reversible configuration and uses 370-volt run capacitors. Licensed HVAC technicians typically install this motor during blower section service or motor replacement on gas, oil, or electric furnaces.

This motor fits standard 48 frame mounting brackets and uses a standard shaft length, diameter, and flats configuration, which simplifies drop-in replacement in most residential forced-air furnaces. The 2.5-inch diameter hub rings are included to accommodate different blower wheel bore sizes. Its low power consumption profile suits it for systems where efficiency at the blower is a priority. Hub rings, standard frame sizing, and reversible rotation make it a versatile option across a range of single-speed blower applications.

Key Features

• 1/2 HP continuous duty motor rated for air-over operation
• Fits all standard 48 frame mounting brackets with no modification
• Electrically reversible rotation for flexible installation orientation
• Automatic thermal overload protector guards against overheating
• Class B insulation for reliable performance in furnace environments
• 2.5-inch diameter hub rings included for blower wheel fitment
• Compatible with 370-volt run capacitors, standard in residential HVAC

Compatibility

Designed as an OEM-style replacement for residential forced-air furnace blower assemblies using standard 48 frame direct drive motors.

Installation Notes

Installation should be performed by a licensed HVAC technician. Disconnect and lock out all power to the furnace before removing the existing motor or handling wiring. Verify capacitor voltage and MFD rating match motor requirements before energizing. Confirm shaft rotation direction is correct for the blower wheel before returning the system to service.

Technical Specifications

• Horsepower: 1/2 HP
• Voltage: 115 volts AC
• Drive Type: Direct Drive
• Frame Size: 48 Frame
• Hub Ring Diameter: 2.5 inches
• Insulation Class: Class B
• Duty Rating: Continuous Duty, Air Over
• Rotation: Electrically Reversible
• Capacitor Compatibility: 370 volts
• Thermal Protection: Automatic Thermal Overload Protector

Standard Information

• Brand: WAGNER MOTORS
• Manufacturer Part Number: wg840587