Legacy reliability meets a compact, purpose-built design. The A.O. Smith Century C-Face 1/2 HP Motor, model B970 (2-S, 115V), is a discontinued line item that still serves as a trusted fits-for-maintenance option for older equipment built around Century/C-Face motors. If your system calls for a 1/2 horsepower, 115-volt motor with a C-face mounting, this unit presents a historically accurate match.

Key details at a glance

• Horsepower: 1/2 HP
• Voltage: 115V
• Mounting: C-Face (direct-mount style common to fans, blowers, and small drives)
• Designation: 2-S (model variant in the B970 line)
• Manufacturer status: Discontinued by the manufacturer
• Brand lineage: A.O. Smith / Century

Why this motor matters for your system

This motor is designed to drop into legacy assemblies that were originally outfitted with Century/C-Face units. Its robust, compact form factor supports straightforward mounting to compatible gearboxes, fan housings, and small drive systems without major rework. Because it’s a genuine Century component, it preserves the original performance envelope and electrical characteristics that your equipment was engineered to use.

Ideal applications

• HVAC components such as older air handlers and blower assemblies that rely on a 1/2 HP, 115V Century/C-Face motor
• Small industrial fans or belt-driven machines designed around the B970 family
• Legacy equipment where direct C-face mounting simplifies installation and alignment

Compatibility considerations

Before purchasing, confirm that your equipment matches the legacy attributes of this motor:

• Mounting pattern: C-Face interface to align with your current mounting plate or housing
• Shaft and couplings: ensure shaft length and diameter fit your existing drive assembly
• Electrical: 115V single-phase supply and wiring configuration match your control enclosure
• Rotation direction: verify your system’s required rotation to avoid misalignment or inefficient operation

As a discontinued model, sourcing may require checking reputable resellers, surplus vendors, or rebuilders. Ensure any unit you buy is tested and returns-friendly given its legacy status.

What to expect when sourcing

Because the B970 motor lines are retired from new production, you’ll likely encounter used, surplus, or remanufactured options. Look for documentation or markings that confirm:

• Model: B970 (2-S) and 115V ratings align with your existing system
• Physical fit: C-Face mounting, shaft length, and overall footprint match your current motor
• Electrical compatibility: correct wiring terminals or harness included for 115V operation

If you can’t locate an exact match, discuss with a service professional about compatible modern replacements that maintain the same frame size and mounting style, preserving fit and performance without extensive rework.

Practical tips for maintenance and installation

• Keep a precise record of your original motor’s specifications (model, HP, voltage, mounting) to ensure a correct match when sourcing replacements
• Inspect the mounting surface and shaft when installing a used unit to confirm smooth alignment and avoid undue load on bearings
• If replacing in an older control circuit, verify that the new motor’s electrical characteristics align with the existing wiring and protective devices

For technicians and homeowners maintaining legacy equipment, the Century A.O. Smith C-Face 1/2 HP Motor (B970) represents a historically accurate, direct-fit option that preserves the intended performance and fit of your original system. Given its discontinued status, approach sourcing as a careful, informed replacement, prioritizing exact matching of mounting, shaft, and electrical specifications to keep your equipment running smoothly.