US Motors Nidec, N157 Inducer Motor, 0.33 HP, 3600 RPM, Single Phase, 115 V, 60 Hz

US Motors Nidec N157 Draft Inducer Motor

Ensure your furnace vents safely and efficiently with the US Motors Nidec N157 Inducer Motor. This heavy-duty shaded-pole motor is specifically engineered for high-efficiency Goodman and Janitrol furnaces. As a critical safety component, this motor creates the necessary draft to pull combustion gases through the heat exchanger and expel them through the exhaust flue.

Product Overview

The N157 is a high-speed, single-phase motor designed for 115V AC power. Operating at 3,000 RPM, it provides the consistent static pressure required to close the furnace pressure switch and initiate the ignition sequence. This motor is often provided with a new mounting gasket to ensure a secondary airtight seal, preventing dangerous carbon monoxide leaks into the mechanical room.

Technical Specifications

Compatibility and Cross-Reference

The N157 is a versatile replacement for a wide range of OEM part numbers from Fasco, Jakel, and Goodman:

• Goodman / Janitrol: B1859005, B18590-05, B1859005S, B40590-35, 10703, 3106
• Fasco: A157, 7002-2307, 7002-2771, 7002-3219, 7058-0229, 7058-1227
• Jakel: J238-112-11128, J238-112-11258, J238-112-11195, J2380-112-11258, J238-11128
• Rotom / Dayton: RFB185, R7-RFB185, RFB859, 4MH09, 41H438

Symptoms of a Failing Inducer Motor

When an inducer motor begins to fail, the furnace control board will typically prevent the burners from lighting. Watch for these indicators:

• Seized Bearings: The motor may emit a loud humming noise but fail to spin the blower wheel.
• Internal Short: The motor trips the furnace circuit breaker or the low-voltage fuse on the control board.
• Noisy Operation: A high-pitched screeching or rattling sound usually indicates that the internal shaded-pole bearings are worn out.
• Pressure Switch Errors: If the motor spins too slowly, it won't generate enough suction to close the pressure switch, resulting in a "failed to ignite" error code.

Installation and Safety Tip

When replacing the N157, always ensure the included gasket is properly seated against the collector box. An improper seal can cause the furnace to lose vacuum pressure or leak moisture (condensate). Always disconnect the 115V power supply and shut off the gas valve before attempting any electrical repairs on your furnace.

Shipping Information

• Continental US: Reliable shipping is available for all orders within the lower 48 states.
• Rapid Fulfillment: We understand that a failed inducer means no heat. We prioritize fast processing to get your furnace back in operation.
• Trusted Quality: We stock Nidec/US Motors components because they meet or exceed original equipment manufacturer standards for durability.

Warranty Notice

Please note, that on universal products, there is no warranty. They are purchased at the buyers choice and once installed, we cannot take them back or issue any kind of manufacturer warranty. Only OEM original products come with a warranty guarantee.

Order your Nidec N157 inducer motor today from Shorty’s HVAC Supplies and ensure your furnace operates safely all winter long.