A.O. Smith Century C-Face 1.0 HP Magnum Motor is a purpose-built, single-speed replacement designed for dependable performance in HVAC systems and other equipment that use a C-Face mount. Engineered by Century (A.O. Smith), this Magnum motor delivers proven reliability, efficient operation, and easy compatibility with existing installations.

Why this motor stands out for real-world use

• Dual-voltage versatility: rated for 115/230V operation, so you can match your current wiring without unnecessary rewiring or adapters.
• Compact C-Face design: a common, drop-in solution that aligns with existing mounting patterns, minimizing installation time and downtime.
• 1.0 HP Magnum power with a 1-S (single speed) configuration delivers solid torque for air handling, compressors, and other equipment that rely on steady, dependable motor speed.
• 60 Hz, 3450 RPM, clockwise rotation: optimized for standard two-pole configurations typical in HVAC and pump applications.
• Thermally protected & Insulation Class B: built to withstand typical indoor environmental conditions, protecting the windings under load and helping extend motor life.
• ODP enclosure with J form: open-drip-proof design combined with a form (J) that supports reliable cooling and straightforward maintenance.
• Ambient rating up to 50°C: suitable for typical installation environments without overheating concerns.

Key specifications at a glance

• Model / Type: CXF
• Horsepower: 1.0 HP
• Service Factor: 1.40
• Voltage: 115/230V
• RPM: 3450
• Rotation: CW (clockwise)
• Enclosure: ODP
• Insulation: Class B
• Ambient: 50°C
• Thermal protection: Yes
• Catalog reference: B128; Model 164303

Practical use cases and who benefits most

• HVAC condensers and air handling units: a reliable replacement for aging or failed C-Face magnum motors, reducing downtime and extending equipment life.
• Residential and light commercial cooling systems: supports consistent performance in cooling cycles, helping maintain steady airflow and compressor efficiency.
• Pool and pump systems with C-Face mounting: designed to withstand continuous operation in typical non-industrial environments.

Why choose this A.O. Smith / Century motor over alternatives

• Trusted pedigree: Century Electric Motors, part of A.O. Smith, brings decades of engineering expertise and global manufacturing support, ensuring consistent quality and availability for OEMs and aftermarket replacements.
• Cross-compatibility: engineered to align with common cross-referenced part numbers (e.g., 14542, 222439, 5222X, AOSB128, C1100, EB128, EST1102, MGT-60-5099), making replacement straightforward in many legacy systems.
• Repair-friendly design: thermally protected windings and robust insulation reduce risk of overheating during peak loads, helping you avoid costly shutdowns.

Installation and care tips

• Confirm dual-voltage wiring matches the equipment’s electrical supply to avoid overloading or underpowering the motor.
• Mount and align according to the C-Face adapter pattern used by your existing unit to ensure proper belt/pulley alignment and vibration control.
• Ensure airflow around the motor is unblocked, and verify that the ambient temperature remains within the 50°C rating for optimal performance and longevity.
• Regularly inspect the terminal box for tight connections and check for signs of wear or overheating during the first weeks of operation after replacement.

Seamless compatibility, dependable performance, and a trusted name—this A.O. Smith Century C-Face 1.0 HP Magnum Motor (B128) is built to keep your systems running smoothly. If you’re upgrading an aging motor or replacing a failed unit in HVAC, pool, or pump applications, this is a proven, drop-in solution that minimizes downtime and supports long-term reliability.