The Nordyne 903404 Combustion Blower Assembly is a genuine OEM draft inducer designed for select Nordyne, Intertherm, Miller, Frigidaire, Gibson, Maytag, Tappan, and Broan gas furnaces. This assembly creates the negative pressure required for proper combustion airflow, pressure switch operation, and safe venting of flue gases.

Engineered to factory specifications, the 903404 restores proper furnace operation when the original combustion blower becomes noisy, seizes, fails to start, or can no longer maintain adequate draft pressure. Installing the correct OEM inducer assembly helps ensure reliable ignition, proper pressure switch proving, and safe furnace operation.

Ideal for resolving pressure switch faults, ignition lockouts, inducer motor failures, excessive vibration, or reduced draft performance.

Cross‑Reference (Technician Binder Card Format)

Direct OEM

• 903404 — Nordyne Combustion Blower Assembly

Compatible Brands

• Nordyne
• Intertherm
• Miller
• Frigidaire
• Gibson
• Tappan
• Maytag
• Broan

Related OEM Inducer Assemblies

(Verify compatibility before replacing)

• 901996
• 903758
• 903773
• 904108
• 904111

Technician Notes

• Application: Gas furnace combustion air inducer
• Function: Creates draft for combustion and pressure switch operation
• Type: Complete blower assembly
• OEM Replacement: Yes
• Verify venting system is clear before replacing.
• Inspect pressure switch tubing and condensate drains.
• Check inducer wheel for damage or debris.
• Replace mounting gasket whenever possible.
• Confirm proper pressure-switch closure after installation.

Common Symptoms of Failure

• Pressure switch won't close
• Inducer motor won't start
• Furnace ignition lockout
• Excessive noise or vibration
• Slow startup of combustion blower
• Intermittent heating operation
• Error codes related to draft proving