The Fasco A163 is a direct-replacement draft inducer blower motor engineered for residential and light-commercial furnace applications. Running at 3400 RPM on standard 120V/60Hz power, this shaded-pole motor carries automatic overload protection and Class B insulation -- giving you a dependable drop-in solution for failed OEM inducers from Lennox, Emerson, Fasco, and AllTemp units.
Draft inducer motors are among the most failure-prone components in a forced-air furnace. When the inducer goes, the furnace locks out on a pressure-switch fault and won't fire. The Fasco A163 (NBK part 20209) is built to restore operation quickly without hunting down an obsolete OEM assembly.
At 3.3 inches in diameter and 6 lbs., this motor matches the physical envelope of the original units it replaces. The shaded-pole design provides reliable single-speed operation, and the open air-over enclosure allows the motor to be cooled by the airstream it moves -- consistent with the OEM design intent in these furnace housings.
Built-in thermal overload protector shuts the motor down before heat damage occurs, then resets automatically once the motor cools.
Rated for continuous operation up to 130 deg C winding temperature -- suited to the elevated ambient temperatures inside a furnace cabinet.
Simple, robust construction with no start capacitor required. Fewer components mean fewer failure points in a demanding heat-cycle environment.
Replaces over a dozen OEM and aftermarket part numbers from Lennox, Emerson, Fasco, and AllTemp -- one SKU solves multiple service calls.
This motor is used in gas furnace draft inducer assemblies where the OEM motor has failed or degraded. It is appropriate for service and replacement in:
Before ordering, confirm the motor diameter (3.3 in.), voltage (120V), and RPM (3400) against the failed unit's nameplate. Also verify the shaft rotation direction and shaft length match your existing inducer wheel, as inducer wheel hubs are directional and shaft engagement depth affects wheel clearance.
Draft inducer motors run every time the furnace fires -- often hundreds of cycles per heating season. Common failure modes include worn sleeve bearings (indicated by noise before lockout), open windings from thermal cycling, and seized shafts from corrosion when furnaces sit idle in humid conditions. Replacing just the motor rather than the full inducer assembly is the standard repair approach when the wheel and housing are undamaged.