A direct-replacement draft inducer blower motor engineered to restore proper combustion air flow and flue gas venting in Fasco and Trane furnaces. This PSC motor matches the original electrical and mechanical specifications of Fasco 7062-3972 and Trane 38040310, so installation is straightforward with no adapters or wiring modifications required.
The draft inducer is a critical component in modern induced-draft furnaces. It draws combustion air through the heat exchanger and pushes flue gases out the vent before the main burner ignites, ensuring safe, efficient operation. When the original motor fails -- common symptoms include no-heat lockouts, pressure switch faults, or audible bearing noise -- replacing it with a spec-matched unit like the Fasco A273 restores full function quickly.
This motor ships ready to install. The 13-inch lead wires with pin housing terminal connector match the original harness connector on the covered Fasco and Trane furnace models, so there is no need to splice or re-pin the wiring harness.
PSC motor design delivers consistent torque and quiet operation -- the same motor type used in original equipment on covered Fasco and Trane furnace applications.
Built-in thermal overload protection shuts the motor down if it overheats, preventing winding damage and reducing fire risk in confined furnace cabinets.
Precision ball bearings provide longer service life than sleeve-bearing alternatives, especially important in the continuous-duty cycling environment of a forced-air furnace.
Dual safety certification confirms the motor meets recognized standards for electrical safety in residential and light-commercial HVAC applications.
This motor is a verified direct replacement for the following OEM part numbers. Cross-reference your existing motor's label before ordering to confirm fitment:
Also sold under the NBK Parts number 12174. If you sourced this part through an HVAC distributor as NBK 12174, this is the same unit.
The A273 uses Class B insulation, rated for continuous operation up to 130 deg C winding temperature (with a standard 80 deg C temperature rise over a 40 deg C ambient). The open fan-cooled (OFC) enclosure allows airflow across the windings for self-cooling during operation. The motor is designed for open-air-over mounting, meaning the blower wheel airstream passes over the motor body -- consistent with the original inducer assembly design in covered furnaces.
Before installing, confirm the blower wheel (squirrel cage) from the original assembly is in good condition -- the motor ships without a blower wheel. Inspect the wheel for cracks, debris buildup, or imbalance and clean or replace as needed before mounting on the new motor shaft.