
Sunny Health & Fitness Magnetic Rower Review (SF-RW523021)
An honest Sunny Health & Fitness magnetic rowing machine review covering the 125cm dual rail, 16 resistance levels, quiet running, the SunnyFit app and who should skip it.
By Paul Kendrick, Cardio & Endurance Editor · Updated 18 July 2026
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MERACH has become one of the most popular home cardio brands on Amazon UK, and its magnetic rowing machines are a big reason why. This 16-level magnetic rower is a mid-budget model built around the things most home rowers actually want: quiet resistance, a smooth stroke, an app to track progress and a frame that folds away when you are done. The headline verdict is that it is an excellent value low-impact cardio machine for general fitness and weight loss, easy to live with in a normal home, as long as you go in knowing it is a consumer magnetic rower rather than a gym-grade air rower for competitive training.
How we review
This review is based on extensive research of verified owner reviews, MERACH's published specifications and comparisons with rival home rowers at this price. We have not run our own long-term endurance test of this exact unit, so we report only consistent, repeated findings, both the praise and the complaints, rather than one-off opinions. Prices and specs are correct at the time of writing and can change, and MERACH sells several similar models, so always check the current listing before you buy.
This rower suits people who want convenient, low-impact cardio at home without the noise or bulk of an air rower. Rowing is a genuine full-body workout that raises your heart rate while sparing your joints, which makes it a great choice for general fitness, weight management and anyone easing back into exercise. Regular activity of this kind is strongly linked to better heart health (British Heart Foundation on physical activity and heart health), and a rower makes it easy to hit the recommended weekly targets from home. It is less suited to competitive rowers or CrossFit athletes who want the exact feel and data of a Concept2, who should look at an air rower instead.
The 16 levels of magnetic resistance are the core of the experience. Magnetic braking is smooth and, crucially, near-silent, so there is no air rower whoosh to annoy the household or drown out the television. The lower levels give you an easy, steady glide for warm-ups and longer sessions, while the higher levels add enough load to get your heart and legs working. The honest limit is that a magnet cannot replicate the way an air rower's resistance ramps up the harder you pull, so the stroke feels a little more uniform and less dynamic than a fan-based rower. For fitness rowing, most people quickly stop noticing.
| Resistance type | Magnetic, 16 levels |
|---|---|
| Rail | Dual slide rail for a stable stroke |
| Monitor | LCD showing time, count, calories and more |
| Connectivity | Bluetooth to the MERACH app (and compatible third-party apps) |
| Storage | Folds upright, transport wheels fitted |
| Max user weight | Approx 158 kg / 348 lb |
| Best for | Low-impact home cardio, general fitness and weight loss |
The dual-rail design is a nice touch at this price, giving the seat two points of contact so the stroke feels planted rather than twitchy. The seat is padded, the handle and footplates are sensible, and the whole thing feels sturdy enough for everyday home use, backed by that high 158kg weight rating. Where it really scores for home users is storage: the frame folds so you can stand it up in a corner between sessions, and the transport wheels let you roll it out of the way. That folded footprint is a fraction of the full rowing length, which is exactly what makes a rower like this practical in a spare room or lounge rather than a dedicated gym.
Assembly is required out of the box, but it is a manageable job with the supplied tools, and most owners have it built inside an hour.
The built-in LCD monitor covers the basics: time, stroke count, calories and the like. It is functional rather than fancy, and if you want more, the MERACH app connects over Bluetooth to log your sessions, and many of the brand's rowers also pair with third-party apps like Kinomap for scenic routes and follow-along classes. That gives you a route to more engaging workouts without needing an expensive subscription screen built in.
On value, this is where the MERACH makes its case. It bundles quiet magnetic resistance, a stable dual rail, a folding frame and app support at a price well below premium rowers, which is why the brand sells so well. If you are comparing it against the wider field, our best rowing machine guide and best budget rowing machine guide put it in context, and if you are still deciding on a machine type, our rowing machine versus cross trainer comparison and the rowing machines hub are good next stops.
For a home magnetic rower it is a strong value pick. You get quiet magnetic resistance with 16 levels, a smooth dual-rail slide, an LCD monitor, app connectivity and a frame that folds for storage, all at a mid-budget price. It is not a Concept2-style air rower for serious athletes, but for general fitness, weight loss and low-impact cardio at home it does the job well.
Very quiet, which is one of its main selling points. Magnetic resistance works without the whooshing noise of an air rower, so you can row early in the morning or while others sleep, and watch television without cranking the volume. The main sound is the smooth glide of the seat along the rails.
Yes. The frame folds so you can stand it upright or tuck it away between sessions, which is a big plus if you are short on space. It is not featherweight, but transport wheels help you move it, and the folded footprint is far smaller than the rowing length.
This model is rated to a generous maximum user weight of around 158kg (roughly 348lb), which comfortably covers most people. As always, treat the maximum as a limit rather than a target, and check the exact figure on the current listing before you buy, as MERACH sells several models.
Yes, it connects to the MERACH fitness app over Bluetooth, and many of its rowers also work with third-party apps like Kinomap for scenic routes and classes. The app tracks your stats and adds guided workouts, though you can also just row using the built-in LCD monitor without any phone at all.

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