Armstrong Furnace R44704-002 Induced Draft Assembly

The Armstrong Furnace R44704-002 Induced Draft Assembly is a critical OEM replacement component designed to maintain the integrity of the combustion cycle in high-efficiency residential and commercial gas furnaces. This 1/20 HP, 115V, 3200 RPM motor works as a draft inducer blower, creating the essential negative pressure required to pull combustion gases through the heat exchanger and safely vent them through the flue. As an exact functional equivalent to the 44704-001, this Fasco 702110930 based assembly ensures a precise fit and seamless integration with existing control boards and pressure switches. Operating at 1.55 Amps, this centrifugal fan assembly is engineered for high-cycle reliability in demanding HVACR environments. Replacing a seized or noisy induced draft motor with this genuine Armstrong Air furnace part restores factory-spec airflow, prevents pressure switch lockout codes, and ensures the vent pipe exhaust remains free of dangerous carbon monoxide buildup. Technical professionals prioritize this OEM inducer assembly for its balanced impeller and heavy-duty housing, which minimize harmonic vibration and operational noise.

Key Benefits for Technicians

• Direct OEM Replacement: Fully interchangeable with the 44704-001 and specifically calibrated for Armstrong Air furnace sequences.
• Integrated Safety: Restores the precise negative pressure needed to close the furnace pressure switch and initiate the ignition cycle.
• Optimized Combustion: Improves fuel efficiency by ensuring a consistent draft inducer airflow for the burners.
• Durable Construction: Features high-temperature-tolerant components and sealed bearings to withstand corrosive flue gas environments.

Common Questions & Troubleshooting

What are the signs that my R44704-002 assembly is failing?
Technicians typically look for a "no heat" call where the control board displays a pressure switch error. Physical indicators include a humming motor that fails to rotate, grinding noises from worn bearings, or visible corrosion on the housing. 115V power should be verified at the motor leads during the startup sequence to confirm the control board is sending the signal.

Is the R44704-002 compatible with other furnace brands?
While primarily designed for Armstrong Air and Ducane equipment, compatibility is strictly determined by the part number and electrical specifications. Always check the static pressure rating and mounting hole patterns if attempting to cross-reference with other Allied Air brands.

Does this assembly include the necessary gaskets?
This induced draft assembly is typically provided as a complete unit. Technicians should verify the seal against the collector box to prevent flue gas leakage and ensure the vent system operates at peak efficiency.

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.

This item is not eligible for free shipping.