904999 Nordyne Inducer Motor Assembly
904999 Nordyne Inducer Motor Assembly
Product Overview
904999 is a genuine OEM Nordyne inducer motor assembly engineered to evacuate combustion gases from the heat exchanger and maintain proper draft in residential and light-commercial gas furnaces.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 904999 |
| Type | Inducer motor assembly |
| Voltage | 115 / 120 V, 60 Hz |
| Amperage | See unit nameplate |
| Horsepower | See unit nameplate |
| Weight | 4.55 lb (2.06 kg) |
| Housing Material | Cast aluminum and steel |
| Box Dimensions | 10 × 12 × 12 in (254 × 305 × 305 mm) |
Cross-Reference Part Numbers
| OEM Part Number | Notes |
|---|---|
| 904999 | Current OEM Nordyne inducer motor; no predecessor |
Compatibility
Fits Nordyne, Miller, and Nortek Global HVAC furnace models that originally shipped with the 904999 inducer motor. Common furnace types include both condensing and non-condensing single-stage gas furnaces. Always verify compatibility by matching the old motor’s:
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Mounting flange dimensions
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Shaft length and diameter
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Electrical specifications
against the new assembly before ordering.
Technician Notes
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De-energize furnace at the main disconnect and shut off gas supply before servicing.
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Label and disconnect wiring harness connectors from the inducer assembly.
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Remove mounting screws; detach inducer and inspect the gasket—replace if brittle.
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Clear venting passages and condensate trap of any debris or scale.
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Position new inducer against the gasket/housing; torque screws evenly to OEM specs.
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Reconnect wiring, restore power and gas, then call for heat to confirm operation.
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Measure amp draw on startup—it should not exceed the nameplate rating—and listen for smooth ramp-up without vibration or unusual noise.