A. O. Smith 4MB97 Condenser Fan Electric Motor

A. O. Smith 4MB97 Condenser Fan Electric Motor is a 3/4 HP outdoor condenser motor designed for air-conditioning equipment. It delivers 1075 RPM from a 460V supply and uses a 48Y frame, a standard footprint that aligns with many replacement motors in existing condenser fan assemblies. The motor is intended to drive the condenser fan in outdoor units, enabling heat rejection from the refrigerant to ambient air and supporting reliable cooling performance. The 48Y frame size provides compatibility with common mounting and shaft dimensions found in many AO Smith/Century condenser fans, helping technicians source straightforward replacements without major rework. The model designation 4MB97 helps ensure you’re selecting the correct replacement for equipment that originally used a 48Y-frame, 460V, 3/4 HP AO Smith condenser motor. This motor is typically used in residential and light commercial air-conditioning condensers, where matching voltage, frame size, and horsepower are essential for proper operation and safe maintenance.