
Fasco D673 Inducer Assembly
The Fasco D673 inducer assembly is a heavy-duty, 1/50 HP replacement draft inducer designed for precise combustion air control in residential furnaces. This 115V shaded pole motor operating at 3000 RPM provides a reliable 100 CFM output to ensure safe flue gas exhaustion. Engineered as a direct replacement for Fasco 673, it is also a field-proven substitute for multiple OEM models including Heil-Quaker 610672 and Rheem-Ruud 51-21504-01. The unit features a 3.3-inch frame, 1.0 Amp draw, and sleeve bearings for quiet operation and longevity under high-heat conditions. Built with Class B insulation and an open motor enclosure, the D673 draft blower maintains thermal protection up to a 104°F ambient temperature. This single-speed, CWSE rotation assembly is critical for maintaining furnace pressure switch reliability and preventing system lockouts caused by inadequate venting.
Key Benefits- Universal Compatibility: Serves as a drop-in replacement for Fasco, Century, and several ICP/Rheem-Ruud furnace exhaust motors.
- Optimized Performance: Delivering 100 CFM at 3000 RPM ensures the correct air-to-fuel ratio for high-efficiency combustion.
- Industrial Build: Features a rugged shaded pole design and thermal overload protection to prevent motor burnout during long cycles.
- Sleeve Bearing System: Designed to minimize vibration and harmonic noise across the ductwork.
- Simplified Installation: Standard 3.3" frame and 115V lead configuration for fast field swaps.
What are the signs of a failing Fasco D673 motor?
Technicians typically look for grinding noises indicating worn sleeve bearings or a humming sound that suggests a seized rotor or capacitor failure.
Will this replace my Rheem or Heil inducer?
Yes, the D673 inducer motor is a common cross-reference for part numbers 51-21504-01 and JA1M139. Always verify the mounting flange and CFM requirements before installation.
Why is my furnace pressure switch not closing?
If the inducer assembly is not reaching 3000 RPM or if the blower wheel is obstructed, it won't create the necessary vacuum to engage the pressure switch, preventing the ignition sequence.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $214.42
-65%$214.42
$75.05Fasco D673 Inducer Assembly
The Fasco D673 inducer assembly is a heavy-duty, 1/50 HP replacement draft inducer designed for precise combustion air control in residential furnaces. This 115V shaded pole motor operating at 3000 RPM provides a reliable 100 CFM output to ensure safe flue gas exhaustion. Engineered as a direct replacement for Fasco 673, it is also a field-proven substitute for multiple OEM models including Heil-Quaker 610672 and Rheem-Ruud 51-21504-01. The unit features a 3.3-inch frame, 1.0 Amp draw, and sleeve bearings for quiet operation and longevity under high-heat conditions. Built with Class B insulation and an open motor enclosure, the D673 draft blower maintains thermal protection up to a 104°F ambient temperature. This single-speed, CWSE rotation assembly is critical for maintaining furnace pressure switch reliability and preventing system lockouts caused by inadequate venting.
Key Benefits- Universal Compatibility: Serves as a drop-in replacement for Fasco, Century, and several ICP/Rheem-Ruud furnace exhaust motors.
- Optimized Performance: Delivering 100 CFM at 3000 RPM ensures the correct air-to-fuel ratio for high-efficiency combustion.
- Industrial Build: Features a rugged shaded pole design and thermal overload protection to prevent motor burnout during long cycles.
- Sleeve Bearing System: Designed to minimize vibration and harmonic noise across the ductwork.
- Simplified Installation: Standard 3.3" frame and 115V lead configuration for fast field swaps.
What are the signs of a failing Fasco D673 motor?
Technicians typically look for grinding noises indicating worn sleeve bearings or a humming sound that suggests a seized rotor or capacitor failure.
Will this replace my Rheem or Heil inducer?
Yes, the D673 inducer motor is a common cross-reference for part numbers 51-21504-01 and JA1M139. Always verify the mounting flange and CFM requirements before installation.
Why is my furnace pressure switch not closing?
If the inducer assembly is not reaching 3000 RPM or if the blower wheel is obstructed, it won't create the necessary vacuum to engage the pressure switch, preventing the ignition sequence.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Fasco D673 inducer assembly is a heavy-duty, 1/50 HP replacement draft inducer designed for precise combustion air control in residential furnaces. This 115V shaded pole motor operating at 3000 RPM provides a reliable 100 CFM output to ensure safe flue gas exhaustion. Engineered as a direct replacement for Fasco 673, it is also a field-proven substitute for multiple OEM models including Heil-Quaker 610672 and Rheem-Ruud 51-21504-01. The unit features a 3.3-inch frame, 1.0 Amp draw, and sleeve bearings for quiet operation and longevity under high-heat conditions. Built with Class B insulation and an open motor enclosure, the D673 draft blower maintains thermal protection up to a 104°F ambient temperature. This single-speed, CWSE rotation assembly is critical for maintaining furnace pressure switch reliability and preventing system lockouts caused by inadequate venting.
Key Benefits- Universal Compatibility: Serves as a drop-in replacement for Fasco, Century, and several ICP/Rheem-Ruud furnace exhaust motors.
- Optimized Performance: Delivering 100 CFM at 3000 RPM ensures the correct air-to-fuel ratio for high-efficiency combustion.
- Industrial Build: Features a rugged shaded pole design and thermal overload protection to prevent motor burnout during long cycles.
- Sleeve Bearing System: Designed to minimize vibration and harmonic noise across the ductwork.
- Simplified Installation: Standard 3.3" frame and 115V lead configuration for fast field swaps.
What are the signs of a failing Fasco D673 motor?
Technicians typically look for grinding noises indicating worn sleeve bearings or a humming sound that suggests a seized rotor or capacitor failure.
Will this replace my Rheem or Heil inducer?
Yes, the D673 inducer motor is a common cross-reference for part numbers 51-21504-01 and JA1M139. Always verify the mounting flange and CFM requirements before installation.
Why is my furnace pressure switch not closing?
If the inducer assembly is not reaching 3000 RPM or if the blower wheel is obstructed, it won't create the necessary vacuum to engage the pressure switch, preventing the ignition sequence.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.











