AOS Century 3 HP ST1302 56J Replacement Motor – Pool, Spa, HVAC

This 3.0 HP motor in a 56J frame is a dependable replacement built on a 75-year legacy of reliability from A.O. Smith / Century. Available by special order, it’s designed for residential, commercial, and light industrial use—perfect for pool and spa pumps as well as HVAC compressors.

• HP Rating: 3.0 HP continuous-duty motor suitable for common load requirements in pool/spa and HVAC applications.
• Frame: 56J frame compatibility to simplify retrofits and ensure correct mounting and shaft alignment.
• Model / Part: ST1302 – a proven Century/A.O. Smith replacement motor with a long track record in pool and spa equipment.
• Applications: Ideal for air conditioning compressors, pool/spa pumps, and other equipment requiring durable, reliable operation.
• Durability: Built to endure continuous service with the brand’s extensive manufacturing heritage and quality controls.
• Availability & Support: Special-order item supported by a broad distributor network and installation guidance for a smooth replacement.
• Efficiency Alignment: Designed to integrate with evolving efficiency practices and electronically controlled systems for improved overall performance.
• Compatibility Check: Before substitution, verify compatibility by reviewing the equipment nameplate for ST1302, horsepower, and frame; confirm shaft, mounting dimensions, and any required capacitors or control components.

Benefits: With the A.O. Smith Century ST1302 replacement motor, you gain a dependable, long-lasting solution that restores critical system performance—whether restoring comfort in HVAC setups or keeping pool and spa circulating smoothly. The 56J frame eases retrofit projects, while the 3.0 HP rating delivers solid starting torque and steady operation for compressors and pumps. This motor also supports modern efficiency trends, offering a practical upgrade path for contractors and homeowners who value reliability, easier installation, and continued service life. Remember to confirm nameplate details (ST1302, frame, horsepower) and any ancillary components needed for a seamless swap, ensuring optimal compatibility and performance.

This item is available by special order only

Built on a 75-year legacy of reliability, A.O. Smith Electric Motors and Century Electric Motors deliver durable power for homes, businesses, and industrial systems. The ST1302 model is a robust 3.0 HP motor housed in a 56J frame, designed as a dependable replacement that keeps your equipment—whether in HVAC, pool, or spa setups—operating smoothly and efficiently.

Why choose A.O. Smith / Century for replacement motors?

• Proven lineage with global reach: Regal Beloit America, the company behind Century and A.O. Smith, maintains operations across the United States, Mexico, China, and Europe, ensuring a steady supply chain and local support for OEMs and replacement projects.
• Extensive product family: from hermetic motors used in air conditioning compressors to fractional horsepower A/C and DC motors and integral horsepower motors, this line provides precise matchups for a wide range of equipment.
• Heritage in pool and spa equipment: Century/A.O. Smith motors have a long track record in the bath and spa market, including solutions like the Centurion switchless, permanent split capacitor motors for pools, spas, and jet tubs—now part of a broader, replacement-ready portfolio.
• Trusted distributor network and support: Bath & Spa Parts Online has carried Century/A.O. Smith replacement motors since the early 1980s, reflecting a deep commitment to quality replacements and informed installation guidance.

ST1302 3.0 HP, 56J Frame: what this motor delivers

• Reliable performance for HVAC and cooling systems: the 3.0 HP rating provides robust starting torque and steady operation for compressors and load requirements common in residential and light commercial setups.
• 56J frame compatibility: designed to fit a broad range of retrofit projects where mounting, shaft alignment, and frame size follow the 56J standard, helping to minimize downtime during replacements.
• Versatile applications: ideal for air conditioning compressor replacements and for pool/spa pump configurations that require durable, continuous-duty operation.
• Aligned with evolving efficiency trends: as the industry moves toward electronically controlled motors and optimized system performance, this product line supports those efficiency goals within a reliable, field-ready replacement option.

Practical guidance for a smooth replacement

Before substitution, verify compatibility by checking your equipment’s nameplate for the ST1302 model, horsepower, and frame requirements. Confirm shaft and mounting dimensions, wiring configurations, and any ancillary components (such as capacitors or control boards) that may be required for your specific installation. If you’re upgrading to a motor that supports newer efficiency practices, this family of products is part of a tested path toward improved performance and long-term service life.

Whether you’re an HVAC contractor, pool service professional, or a homeowner tackling a replacement, the A.O. Smith / Century 3.0 HP ST1302 motor offers a proven, dependable option with a strong legacy behind it. It’s a thoughtful upgrade that pairs practical installation compatibility with a broad network of support and replacement availability.