A.O. Smith Century Motor 1.0 HP [48Y] BN90 — a trusted OEM solution for replacing tired or obsolete motors across essential systems. With a heritage spanning more than seven decades, A.O. Smith Electric Motors and Century Electric Motors have long been the go-to choice for residential, commercial, and industrial applications. Since Regal Beloit Corporation acquired the electric products division in 2011, the same commitment to quality and reliability continues to power upgrades and rebuilds worldwide. Where this motor shines - Replacement reliability for HVAC and pool/spa equipment: designed to slot into a wide range of systems that rely on durable, electronically controlled performance. - Ideal for pool and spa connections: historically aligned with Centurion switchless lines and permanent split capacitor concepts, making it a familiar, dependable choice for swimming pools, spas, and jetted tubs. - Broad applicability across environments: suitable for residential homes, commercial facilities, and industrial setups that demand consistent motor performance. Key details that matter for installation - Horsepower: 1.0 HP - Frame size: 48Y - Model reference: BN90 - Brand lineage: A.O. Smith / Century, part of Regal Beloit America, with global operations to support OEMs and replacements Why choose this motor over generic replacements - OEM quality and compatibility: built to match the design and mounting footprints of the original equipment, reducing the guesswork during replacement and speeding up service calls. - Proven longevity and support: supported by a vendor network with decades of experience in motors for HVAC, pool, and pump systems, ensuring you can source parts and obtain guidance when needed. - Comprehensive product family: Bath & Spa Parts Online carries the complete Century/A.O. Smith replacement motor line, helping you find the exact match for older equipment without compromising performance. Who this is for - HVAC technicians and facilities engineers seeking a reliable replacement motor that aligns with original equipment specifications. - Pool and spa professionals replacing motors in circulating pumps, pool heaters, or spa jet systems. - OEMs and distributors who require consistent, field-proven motors with broad availability and legacy compatibility. What problems it solves - Downtime reduction: a true OEM replacement minimizes compatibility risk and installation time, helping systems return to service quickly. - Longevity and reliability: built on a long-standing engineering ethos to endure in demanding heating, cooling, and water-treatment applications. - Streamlined sourcing: easy access to a complete line of Century/A.O. Smith motors enables faster procurement and fewer substitutions. Practical tips for best results - Verify compatibility: confirm that your equipment uses a 48Y frame and supports a 1.0 HP motor before ordering. - Match mounting and wiring: check shaft size, mounting orientation, and electrical connection details against your existing setup and the equipment’s wiring diagram. - Plan for replacement harmonics: when upgrading within the Century/A.O. Smith family, aim to preserve the original drive and control relationships to maintain efficiency and reliability. If you’re updating a pool, spa, or HVAC system that relies on a proven, OEM-grade motor, the A.O. Smith Century BN90 1.0 HP 48Y motor delivers the trusted performance and compatibility you need. With decades of industry leadership behind it and support from a global network, this motor is a solid foundation for reliable operation across residential, commercial, and industrial applications.

WHY USE A.O. SMITH (AOS)/CENTURY PRODUCTS?
Regal Beloit America, Inc. (Century Electric Motors / A.O. Smith Electric Motors) is a leading supplier of electric motors for residential, commercial, and industrial applications. With operations in the United States, Mexico, China, and Europe, Regal Beloit America, Inc. has the ability to serve its customers electric motor needs on a global basis. We offer a comprehensive line of hermetic motors (used in air conditioning compressors), fractional horsepower A/C and D/C motors, and integral horsepower motors. We sell our products directly to original equipment manufacturers (OEMs), and replacement motors to HVAC and pool/pump distributors. Bath & Spa Parts Online is proud to say that we have carried and sold Century/A.O. Smith (AOS) replacement motors since we started in the Bath & Spa industry in the early 1980's. At this time, the company was introducing their Centurion switchless, permanent split capacitor motors for the swimming pool, spa, and jetted tub industries. A.O. Smith (AOS)/Century has been committed to providing quality products for more than 75 years, and that commitment continues today. If you have any questions about their product line, please feel free to ask us. We carry the complete line of their products!