Verified specifications
| Horsepower | 1 HP (full-rated) |
|---|---|
| Total HP (THP) | 1.65 THP (1 HP × 1.65 SF) |
| Service factor | 1.65 |
| Speed | 3450 RPM |
| Voltage | 115/208-230V, single-phase, 60 Hz |
| Full-load amps | 14.8/7.8-7.4A |
| Frame | 56Y (square flange) |
| Enclosure | Open drip-proof (ODP) |
| Motor type | PSC |
| Rotation | CCWPE (counterclockwise, pump end) |
| Shaft | 5/8" 303 stainless steel, threaded |
| Bearings | Sealed ball bearings |
| Thermal protection | Automatic |
| Insulation | Class B |
| Ambient | 50°C |
| Length | 13.40" overall |
| Listings | UL 1081 |
Full-rated: match total HP (THP = label HP × service factor) to the pump's requirements, and confirm full-rated vs up-rated before swapping.
56Y fitment: square-flange mount — the Pentair WhisperFlo / Challenger / Pinnacle and Sta-Rite Max-E-Pro / Max-E-Glas / Dura-Glas class.
Single-speed and CA/NY: California and New York require variable-speed replacement motors (Title 20) for most pool pump replacements; see the VGreen Evo line.
Shaft seal: replace the pump shaft seal whenever the motor is changed — a leaking seal is the #1 killer of new pool pump motors.
Dual branding: this stock number is sold interchangeably as A.O. Smith and Century — Regal Rexnord's aftermarket motor brand. Same motor, same specs; see the Century B2841V1 page.
Replaces the older B841, B2841, and EB841 stock numbers — same frame and THP.
Older variant merged: the B2848V1 is the older variant of this motor (115/230V only, 16.0/8.0A) — near-identical; match THP when swapping.
Insulation: published spec tables list Class B; one retailer's marketing page says Class F — we go with the spec tables.
Confirming the right replacement
Before we quote, compare these fields on your failed motor's nameplate. If any of them differ, send us a photo of the nameplate and we'll match it exactly rather than guessing:
- Full model number — including any suffix letters
- HP, RPM, and voltage
- Frame size (e.g. 284T) and enclosure (TEFC, ODP, etc.)
- Full-load amps
Other A.O. Smith models
- More A.O. Smith modelsBrowse every A.O. Smith model page we quote
- Century B2841V1Same stock number under Century branding — identical motor
Documented equivalent replacements
The motors below are published as replacements for this model in the cross-reference tables cited. We confirm the match against your nameplate before quoting:
| Documented equivalent | Cross-reference source |
|---|---|
| US Motors ASQ225 | Nidec US Motors Replacement Cross Reference (manufacturer) |
| Pentair OEM 011518 / 011773 — fits Pentair WFE-26 / WF-26 pumps | Century ALMOND CENTURION PRO catalog (manufacturer) |
Cross references via Nidec US Motors' published Replacement Motor Cross Reference (pool/spa), manufacturer-published. Crossed motors are documented replacements — match THP, frame, and flange to your nameplate before ordering. Pentair OEM crosses via Century's ALMOND CENTURION PRO Premium Replacement Pool & Spa Motors catalog (manufacturer-published).
Need a A.O. Smith B2841V1?
Send the nameplate off your failed unit. We'll confirm the match and quote the B2841V1 or a verified equivalent with availability and lead time.
Quote this motor