25-inch internal diameter (ID)

micro-adjustable water level calibration

which triggers safety lockouts

Common Questions and Technical Concerns Can I use this housing for different 48-series tonnages

If your furnace is short-cycling or throwing a pressure switch error code

Nidec-US Motors N157 Inducer Motor 321702-401 25-inch internal diameter (ID)When you're troubleshooting a failed furnace exhaust system, the Nidec US Motors N157 Inducer Motor is a rugged, industry standard choice for draft inducer applications. This 1 30HP furnace inducer motor operates at 3000 RPM on a 120Vac (115V nominal) power supply, pulling a consistent 1. 6 Amps. Designed as a direct OEM replacement motor, it features a shaded pole motor design and is thermally protected with an automatic reset to prevent burnout