Condenser Fan Motor 1/4 HP 1075 RPM | Carrier P257-8728 Replacement NBK-20042

The NBK-20042 Condenser Fan Motor is a premium-quality aftermarket replacement designed for residential and light commercial air conditioning condensers, heat pumps, and refrigeration condensing units. This 1/4 HP PSC condenser fan motor delivers dependable performance, quiet operation, and long service life, making it an excellent replacement for worn or failed OEM condenser fan motors.

Designed as a direct replacement for numerous OEM motors from Carrier, Century, Fasco, Genteq, Mars, Nordyne, Rheem, York, and others, the NBK-20042 offers reliable airflow to help maintain proper condenser temperatures, improve system efficiency, and extend the life of your HVAC equipment.

Direct Replacement for:

• Carrier P257-8728
• Century FSE1026S
• Fasco D909
• Genteq 3728
• Mars 10728
• Marathon X412
• Nordyne 01-0161
• Packard 43732
• Rheem W51-14CJA1-01
• U.S. Motors 1860
• Wagner WG840728
• York S1-FHM3728

Key Features

• Direct replacement condenser fan motor for residential and commercial HVAC equipment.
• 1/4 HP permanent split capacitor (PSC) motor delivers dependable starting torque and efficient operation.
• Designed for air conditioning condensers, heat pumps, and refrigeration condensing units.
• High-quality bearings provide smooth, quiet performance and extended service life.
• Precision-balanced rotor minimizes vibration and operating noise.
• Reversible rotation for versatile installation.
• Built to meet or exceed OEM performance specifications.

Specifications

• Part Number: NBK-20042
• Motor Type: Condenser Fan Motor
• Horsepower: 1/4 HP
• Voltage: 208-230 VAC
• Frequency: 60 Hz
• Speed: 1075 RPM
• Phase: Single Phase
• Frame: 48Y
• Rotation: Reversible
• Bearing Type: Ball Bearings
• Enclosure: Totally Enclosed Air Over (TEAO)
• Shaft Diameter: 1/2 Inch
• Shaft Length: 6 Inches
• Capacitor Required: 5 MFD (Sold Separately unless otherwise noted)

Compatible Equipment Brands

Compatible with many HVAC systems manufactured by:

• Carrier
• Bryant
• Payne
• Trane
• American Standard
• Rheem
• Ruud
• York
• Coleman
• Luxaire
• Lennox
• Armstrong Air
• Ducane
• Goodman
• Amana
• Heil
• Tempstar
• Comfortmaker
• Arcoaire
• Day & Night
• ICP (International Comfort Products)
• Nordyne
• Frigidaire
• Intertherm
• Maytag

OEM Cross Reference Numbers

Carrier P257-8728 • Century FSE1026S • Fasco D909 • Genteq 3728 • Mars 10728 • Marathon X412 • Nordyne 01-0161 • Packard 43732 • Rheem W51-14CJA1-01 • U.S. Motors 1860 • Wagner WG840728 • York S1-FHM3728

Important Note

Please verify the original motor's horsepower, voltage, RPM, frame size, shaft dimensions, rotation, mounting style, and capacitor rating before ordering. Matching these specifications is essential for proper performance and equipment reliability.

Why Choose NBK Replacement Motors?

NBK replacement HVAC motors are engineered to provide dependable OEM-quality performance at an outstanding value. Every motor is built for durability, efficient airflow, and long service life, helping restore your heating and cooling equipment quickly while reducing costly downtime. Whether you're a homeowner, HVAC technician, or commercial maintenance professional, NBK motors deliver reliable performance you can trust.