Rowing Machine NerdMerax Water Review
Water rower · ~$450
Merax Water
An affordable steel-framed water rower with a smooth pull and inclined tank, held back by a basic monitor, no app support and a short warranty.
The Merax Water is a metal-framed water-resistance rower aimed at the budget end of the market, typically selling for around $450. Rather than the wood construction used by reference designs like the WaterRower, Merax pairs a steel frame and aluminum-style rail with an inclined water tank that the brand says delivers a stronger pull than the flat tanks used on many rivals. The result is a machine that targets buyers who want the distinctive whoosh and self-scaling feel of water resistance without paying premium prices.
It is best understood as an entry-level water rower for home cardio rather than a performance or connected machine. The console is a simple LCD, there is no Bluetooth or app integration, and the warranty is short. For someone who values feel and stability over data and software, though, it covers the basics and undercuts most of the better-known water rowers on price.
Specifications at a glance
| Resistance type | Water (inclined tank, 6 fill levels) |
|---|---|
| Monitor | LCD: time, distance, strokes, strokes/min, calories, pulse, race mode |
| App / connectivity | None (no Bluetooth, ANT+ or app per most sources) |
| Assembled dimensions | 78 x 20 x 25.5 in (sources vary) |
| Machine weight | 72 lbs |
| Max user weight | 330 lbs |
| Slide rail length | ~43 in (fits users up to 6'3") |
| Storage | Stands vertically (not foldable) |
| Warranty | 6 months frame and parts |
Pros
- Genuine water resistance with a smooth, self-scaling pull that gets harder the faster you row
- Inclined tank and steel frame feel solid and stable even at higher stroke rates
- Six water-fill levels let you set baseline intensity to taste
- Long rail and wide footrests comfortably accommodate users up to about 6'3"
- Priced below most wood-bodied water rowers
Cons
- No Bluetooth, ANT+ or app connectivity, so no Kinomap/training-app integration
- Basic LCD monitor with no stored profiles or detailed performance data
- Short 6-month warranty is well below category norms
- Heart-rate readout requires a chest strap that is not included
Best for: Budget-minded home users who want an authentic water-rowing feel for low-impact cardio and don't need app connectivity or competition-grade data.
Resistance and feel
The Merax earns its keep on the pull. This is genuine water resistance, not a fan or magnet pretending to be water, so it self-scales: row harder and the paddle drags harder, ease off and it backs down. That gives the stroke an organic, never-quite-the-same feel that flywheel ergs cannot replicate, and the inclined 45-degree tank is the standout trick here. Angling the tank keeps the paddle deeper in the water through the drive, which firms up the catch and adds resistance you would normally only find on rowers costing several hundred dollars more.
The six fill levels are the real intensity dial. Think of the water as ballast: a low fill feels light and zippy and suits steady cardio or lighter rowers, while topping it up makes every stroke feel like dragging a heavier boat. It is worth experimenting early, because the angled tank can feel grabby for smaller or newer rowers, and dialing the water down a level or two smooths that out. Once you find your level, the pull is smooth and satisfying, which is the single biggest reason to buy a water rower in the first place.
Sound, water and maintenance
The whoosh is the point. Like every water rower, the Merax produces a rhythmic swish on each stroke that most owners describe as relaxing rather than intrusive, and at roughly 60 dB it will not drown out a TV at normal volume. That is a meaningfully different experience from the whir of an air rower, and for a lot of buyers the sound is half the appeal.
The trade-off is upkeep that an air or magnetic rower simply does not have. The tank holds real water, so you treat it with the included chlorine or purification tablets a few times a year to keep it clear, and you will occasionally top up or change the water. None of this is hard, but it is a recurring chore worth knowing about before you commit. One recurring owner complaint is worth flagging too: a minority report a loud cracking or knocking noise from the pulley, which points to occasional unit-to-unit quality variance rather than a universal flaw, so check yours works cleanly during the return window.
Monitor and features
This is where the Merax shows its budget roots, and where our score takes its biggest hit. The LCD covers the basics, time, distance, strokes and calories, plus a race mode that lets you compete against the machine or a prior effort, but it is a no-frills unit with no backlight, which makes it genuinely hard to read in a dim room. There are no stored user profiles and no detailed performance breakdowns, so progress tracking is largely on you.
More limiting is the total lack of connectivity. There is no Bluetooth, no ANT+ and no app support, which means no Kinomap, no Asensei-style coaching and no syncing your splits to a phone or watch. If you are the kind of rower who lives in a training app or wants to log every session automatically, this console will frustrate you fast. Heart rate is technically supported, but only via a chest strap that is not in the box, so budget a little extra if you care about HR zones. Buy this rower for the pull, not the screen.
Build, comfort and storage
The steel frame is the quiet hero. Owners consistently call it sturdy and stable even at higher stroke rates, the 330 lb capacity is believable, and the anti-corrosion finish suits a machine that lives next to a tank of water. The long rail and wide footrests comfortably handle users up to around 6'3", which is generous for a budget rower and better than many compact competitors. Assembly is straightforward, with most owners reporting under an hour.
Comfort is good rather than plush. The contoured seat sits at a friendly 16 inches off the floor for easy entry and exit, but it is hard ABS with no padding, so longer sessions may have you reaching for a seat pad. A few owners also find the footrests sit a touch high and close together and end up running them at their lowest setting. Storage is a genuine plus: stand it on end against a wall and the footprint shrinks to almost nothing, which makes it realistic for a spare room or apartment.
How it compares to the Sunny Phantom Hydro
The obvious rival in this class is the Sunny Health and Fitness Phantom Hydro (SF-RW5910), which typically sits just above the Merax in price. The two are closely matched on the things that matter: both use a steel frame, both offer real water resistance with multiple fill or resistance markings, and both are firmly budget machines with basic, non-connected consoles. The Phantom Hydro pushes its tank to a steeper 60-degree angle and packs a multi-blade fan inside, which gives it a slightly more aggressive resistance ceiling and a more compact upright footprint.
Where the Merax holds its ground is the longer rail and higher 6'3" accommodation, which makes it the safer pick for taller rowers, plus a price that often undercuts the Sunny. Neither machine solves the connectivity problem, so if app integration is your deciding factor, you should be shopping a different category entirely rather than splitting hairs between these two. For most buyers it comes down to height and price: tall rowers and bargain hunters lean Merax, while those wanting the punchiest pull and tightest storage lean Phantom Hydro.
Our take
Buy the Merax if you want the authentic water-rowing experience, the smooth self-scaling pull and the calming whoosh, on the tightest possible budget, and you are happy to treat the console as a basic clock and step counter. It is a strong fit for casual home rowers, taller users up to 6'3", and anyone who values a wood-rower feel without the wood-rower price.
Skip it if data and connectivity matter to you. There is no app support, no Bluetooth or ANT+, the monitor is dim and basic, the warranty is short by category standards, and you will be paying separately for a heart-rate strap. Serious trainees who want trustworthy metrics, structured workouts or app-based coaching should put their money toward a Concept2 RowErg or a connected rower instead. The 3.1 out of 5 reflects exactly that split: a likeable, honest pull wrapped in a bare-bones, dated feature set.
Our verdict
The Merax Water nails the one thing people actually buy a water rower for: a smooth, self-scaling pull and that relaxing whoosh, delivered on a genuinely sturdy steel frame with an inclined tank you would normally pay much more to get. For casual home rowers, taller users and bargain hunters who want the water-rowing feel without a wood-rower price, it is an easy machine to like.
But it is a budget machine through and through, and the compromises are real: a dim, dated console with no app support or connectivity, a heart-rate strap you have to buy yourself, light tank maintenance and a stingy warranty. Buy it for the feel, not the features. If you care about data, coaching or syncing your splits, spend up to a Concept2 RowErg or a connected rower instead. It lands at a fair 3.1 out of 5: a satisfying pull held back by everything bolted around it.
Frequently asked questions
- Does the Merax Water work with Kinomap or other rowing apps?
- No. The Merax has no Bluetooth, ANT+ or app connectivity, so it cannot connect to Kinomap, Asensei or any training app, and it will not sync workouts to your phone or watch. If app integration is important to you, this is the wrong rower.
- Is the Merax good for tall users?
- Yes, relatively. Its long rail and wide footrests comfortably accommodate rowers up to about 6'3", which is better than many compact budget water rowers. Taller users near that limit should still confirm the slide length covers their full leg drive.
- How much maintenance does the water tank need?
- Modest but real. You treat the water with the included chlorine or purification tablets a few times a year to keep it clear, and occasionally top up or change the water. It is easy, but it is upkeep that air and magnetic rowers do not require.
- Does it come with a heart rate monitor?
- No. The console supports wireless heart rate, but the required chest strap is not included, so you will need to buy a compatible strap separately if you want HR readings.
- How does the warranty compare to other water rowers?
- Poorly. The Merax carries a short warranty (around six months) that is well below category norms, where one to several years is common. Inspect the unit carefully during your return window, especially for any pulley noise, since coverage runs out quickly.
References
- Merax Rowing Machine, Water Rower for Home Use, 330 lbs Capacity, LCD Monitor - Amazon
- Merax Water Rowing Machine Review - RowingMachine-Guide.com
- Merax Water Rowing Machine Review: Crushes Rivals With Inclined Water Tank - Jay's Home Gym
Jordan Lockwood (BSc, CPT)
Certified personal trainer (CPT), sports-science graduate, and lifelong rower. Jordan writes and reviews every guide on Rowing Machine Nerd.