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FASCO A155 draft inducer blower steel housing wire leads

FASCO

FASCO A155 Draft Inducer Blower 115V AC 1.4A 3000 RPM

SKU CH-BJJ2-R632N

Draft inducer blower for furnaces, 115V AC, 1.4A, 3000 RPM max motor speed, 400 RPM max fan speed, shaded-pole motor, Class B insulation, wire leads, replaces Armstrong 40425-002 and other models

  • 115V AC operation suits standard furnace wiring
  • 4A current draw keeps circuit loading low
  • 3000 RPM motor speed delivers strong draft induction
  • Shaded-pole motor design provides reliable single-phase starting
  • Direct replacement for Armstrong 40425-002 and 40425-003 models

Draft Inducer Blower for Furnaces

The FASCO A155 is a 115V AC draft inducer blower designed for furnace applications. It operates on single-phase power at 60 Hz with a current draw of 1.4 A. The shaded-pole motor features Class B insulation and connects via wire leads. This new component serves as a direct replacement for specific furnace models.

Airflow Capacity and Motor Speed

The blower delivers a maximum fan speed of 400 RPM while the motor reaches 3,000 RPM. Inlet diameter measures 4 7/8 in and outlet diameter is 3 3/4 in, defining the airflow path through the appliance. These dimensions determine the volume of combustion gases the unit can handle. Performance drops if the connected flue system exceeds the designed flow resistance.

Electrical and Compatibility Limits

Operation is limited to 115V AC, 60 Hz supply circuits. The unit replaces manufacturer model numbers 40425-002, 40425-003, 702110046, 702110325, 702111062 and FB-RFB425 for Armstrong furnaces. It is not suitable for appliances requiring different voltages, phases, or motor types. Installers must verify the exact model match before fitting.

How it compares

Measured against everything we stock in Heating & Cooling Controllers, at today’s prices. Recalculated every night.

Price $158.99
Pricier than about 77% of the 1,762 comparable items (median $45.99).

Specifications

Product
Brand nameFASCO

Questions about this item

Will the FASCO A155 draft inducer blower connect directly to the existing wire leads on my Armstrong furnace?

Yes, the unit uses wire leads for electrical connection and replaces Armstrong models 40425-002, 40425-003, 702110046, 702110325 and 702111062.

How can I verify the blower is running at the correct speed after installation?

The motor is rated for a maximum speed of 3000 RPM and the fan reaches up to 400 RPM at 60 Hz.

Does the FASCO A155 package include mounting gaskets or hardware, or must I source them separately?

The supplier description lists only the draft inducer blower itself; no gaskets, screws or additional hardware are mentioned.

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