A direct-fit replacement draft inducer blower motor engineered to restore proper combustion air flow in Fasco and Lennox furnaces. This shaded-pole, single-phase motor handles dual-speed operation at 2850 and 3300 RPM with built-in thermal protection, making it a reliable service part for HVAC technicians and capable DIYers tackling furnace repairs.
The draft inducer blower is the heart of your furnace's combustion process. It pulls combustion gases through the heat exchanger and vents them safely outside before the main burner fires. When this motor fails -- often signaled by a slow-start lockout, error codes, or a furnace that won't ignite -- replacing it with the correct Fasco A206 unit gets the system back to factory performance without the cost of a full furnace replacement.
Fasco part number 12177 (also cataloged under NBK Parts 12177) is wound and rated to match the original motor's performance envelope exactly. The 3.3-inch frame, sleeve bearing construction, and 55-inch pre-terminated leads make installation straightforward with standard hand tools.
Runs at 2850 RPM (50 Hz) or 3300 RPM (60 Hz) to match North American and export furnace configurations precisely.
Integrated thermal overload protector shuts the motor down safely if operating temperatures exceed the rated ambient limit.
55-inch leads with a spade terminal connector and a stripped end allow direct connection to OEM furnace wiring harnesses with no additional splicing.
Class B winding insulation is rated for continuous duty at elevated temperatures, appropriate for the heat exchanger environment of residential furnaces.
The A206 uses a shaded-pole induction design -- the standard choice for draft inducer applications because it offers simple, brushless operation with no start capacitor required. The sleeve bearing is pre-lubricated and suited to the relatively light radial loads of an inducer wheel assembly. The open air-over enclosure relies on airflow from the inducer wheel itself for cooling, which is standard for this motor type. Do not run the motor uncoupled from its blower assembly for extended periods.
Before ordering, confirm the frame diameter (3.3 inches) and lead length (55 inches) match your existing motor. The spade terminal end connects to the furnace control board harness; the stripped end is typically used for a ground or a second speed tap depending on the specific furnace model. Verify rotation direction on the original motor before removal -- inducer wheels are directionally specific and the replacement motor should match.