D1192 Miller & Duo-Therm replacement draft inducer motor 1/40 hp 3000 rpm 5/16" shaft

The D1192 is an OEM‑style universal draft inducer / booster motor used in Miller, Duo‑Therm, and other mobile‑home furnace applications. This shaded‑pole motor drives the small inducer wheel responsible for establishing proper combustion airflow and negative pressure before ignition.

Built to original performance specs, the D1192 features a 1/40 HP shaded‑pole design, 3000 RPM operating speed, 115‑volt input, and a 5/16" diameter shaft. Ideal for replacing noisy, seized, or weak inducer motors that cause ignition lockouts, pressure‑switch faults, or poor burner performance.

Replaces; Duotherm 335, 3-14669, 3-15413, Fasco 7121-3931, Nordyne 301544, 301544000, S58-844 & S59-454.  Also in Duo-therm motor assembly 3-2072, among others.

Key Features

• OEM‑style replacement for Miller & Duo‑Therm furnaces

• 1/40 HP shaded‑pole motor

• 115V input

• 3000 RPM

• 5/16" shaft, 1.5" length

• 3‑3/8" diameter motor body

• 5‑1/3" overall length

• Universal draft inducer / booster application

Common Failure Symptoms

• Furnace won’t ignite

• Pressure switch not closing

• Loud humming or grinding

• Weak or no inducer airflow

• Motor overheating or seizing

Fasco universal draft inducer booster air burner motor with 120V switch. 120V. 1/40 HP. 3000 RPM.  Shaft size is 5/16" x 1.5" long.  5-1/3" long.  3-3/8" diameter or frame size. Shaded pole. .70 amps. Rotates counter clockwise when viewing from shaft end (CCWSE). 2 mounting studs at 2-7/8" apart.  

Replaces Duotherm 335, 3-14669, 3-15413, Fasco 7121-3931, Nordyne 301544, 301544000, S58-844 & S59-454.  Also in Duo-therm motor assembly 3-2072, among others.

Wiring: blacks to motor, reds to switch, green to ground. Shaft size is 5/16" x 1.25".