Concept2 RowErg vs WaterRower: air or water rower?

The short answer: Concept2 for data and limits, WaterRower for the living room

The two machines solve different problems, and the right one depends on the room more than the workout.

• The Concept2 RowErg is best for buyers who want comparable split times, a confirmed high weight limit, a choice of seat heights and the lower price at $990.
• The WaterRower Original Oak is best for buyers who want a quiet machine that looks like furniture and stands on end in a 20 by 22.25 in. footprint.
• Our pick for most buyers is the Concept2, because it costs $209 less and documents its limits more clearly.
• The disclaimer: grades come from Concept2's and NOHRD's published pages, read on October 21, 2026, not from sessions on either machine.

Side by side: the figures from both spec sheets

Everything below comes from concept2.com and nohrd.com/us on October 21, 2026. Arithmetic is ours.

• List price. Concept2: $990 standard legs, $1,155 tall legs. WaterRower: $1,199 standard rails, $1,249 XL rails.
• Resistance. Concept2: air flywheel with damper. WaterRower: water tank, no settings.
• Assembled size. Concept2: 96 x 24 in. WaterRower: 82.25 x 22.25 x 20 in.
• Space for use. Concept2: 9 x 4 ft recommended. WaterRower: no clearance figure published.
• Storage. Concept2: splits into two parts, no tools. WaterRower: stands upright with water in the tank.
• Seat height. Concept2: 14 in. or 20 in. WaterRower: 9 in.; $150 HiRise Adaptor sold separately.
• Machine weight. Concept2: 57 lb or 68 lb. WaterRower: 63.5 lb without water in one table, 67 lb in another.
• Maximum user weight. Concept2: 500 lb on its own test, 300 lb per EN 20957-7. WaterRower: 700 lb in one table, 330 lb in another.
• Inseam. Concept2: up to 38 in. WaterRower: XL rails recommended over 2 m tall; no inseam figure.
• Monitor. Concept2: PM5, two D cells. WaterRower: S4 Bluetooth, four AA cells.
• Apps. Concept2: ErgData free, 40+ others. WaterRower: WaterRower Connect free, other compatible apps.
• Warranty. Concept2: 5 years frame, 2 years moving parts and monitor. WaterRower: 5 years frame, 3 years parts, including commercial use.
• Returns. Concept2: 30-day money-back, buyer pays shipping. WaterRower: no US return window found on the pages read.
• Delivered price, lower 48. Concept2 standard: $1,045 with $55 shipping. WaterRower: shipping not stated on the product page.

Price: the Concept2 costs $209 less and documents its delivery cost

At list, the Concept2 RowErg is $990 and the WaterRower Original Oak is $1,199, a $209 gap, as of October 21, 2026.

Concept2 publishes its shipping table: $55 to the lower 48 for the standard model, so $1,045 delivered by our arithmetic. NOHRD's product page did not state a shipping figure in the sections we read, so we cannot give a delivered total for the WaterRower.

If you need a higher seat, the gap grows. Concept2's tall legs bring the price to $1,155. The WaterRower's HiRise Adaptor adds $150, for $1,349 by our arithmetic.

Neither machine needs a subscription. Both makers offer free apps, so long-term cost is close to the purchase price for both.

Limits: the Concept2 publishes clearer numbers

This is the largest documentation gap between the two.

Concept2 lists 500 lb as tested by Concept2 and footnotes 300 lb as tested to EN 20957-7. Both numbers are explained, and a buyer can choose which standard to trust.

NOHRD's page lists 330 lb in its overview table and 700 lb in its details table, with no explanation. A buyer near either figure cannot tell which applies.

Concept2 also publishes an inseam limit of 38 in. and offers an extra-long monorail beyond that. NOHRD recommends XL rails for people over 2 m tall but gives no inseam figure.

For heavier or taller buyers, the Concept2 is the safer purchase on documentation alone. Read the full Concept2 RowErg review for the specification table line by line.

Space: the WaterRower stores smaller; the Concept2 is longer in use

In use, the WaterRower is shorter: 82.25 in. against the Concept2's 96 in. That is about 14 in. less length.

In storage, the difference is larger. The WaterRower stands upright at 20 by 22.25 in. of floor, per NOHRD, without draining the tank. The Concept2 separates into two pieces; with standard legs, Concept2 lists the stored pieces at 25 x 33 x 54 in.

Concept2 also recommends 9 by 4 ft of clear floor in use. NOHRD publishes no clearance figure, so measure its footprint plus room to swing your arms and legs.

For a room where the rower must disappear daily, the WaterRower wins. Our small-space home gym guide compares floor area across other equipment types.

Comfort and access: the Concept2 sits 5 to 11 inches higher

Seat height matters more than most buyers expect, because every session starts and ends with getting down to the seat and back up.

The Concept2 offers 14 in. with standard legs and 20 in. with tall legs. Concept2 says the tall version is easier for people with tired knees or mobility limits.

The WaterRower seat sits at 9 in. NOHRD sells a $150 HiRise Adaptor to raise it; the product page does not state the resulting height.

For older users or anyone with knee pain, the Concept2 tall-leg model is the straightforward answer. Talk to a clinician if joint pain is the reason you are choosing low-impact cardio.

Versions: the tall-leg Concept2 and the XL-rail WaterRower solve different problems

Each maker sells one variant, and they are not equivalent.

Concept2's tall-leg RowErg, $1,155, raises the seat from 14 in. to 20 in. Concept2 says it is not needed for tall users, since both versions fit inseams up to 38 in.; it exists for easier getting on and off.

NOHRD's XL-rail WaterRower, $1,249 in the page data, lengthens the rails rather than raising the seat. NOHRD recommends it for people over 2 m tall.

So a tall buyer is covered by the standard Concept2, while a tall WaterRower buyer pays $50 more. A buyer with knee trouble pays $165 more on the Concept2 or $150 more for the WaterRower's HiRise Adaptor.

Noise and feel: the WaterRower is the quieter mechanism

Neither maker publishes a decibel rating, so this comparison is about how each machine makes resistance, not about measured sound.

The Concept2 uses an air flywheel inside a fan housing. Moving air is audible, and the sound rises with effort.

The WaterRower moves paddles through water in a sealed tank. NOHRD describes the sound as the soothing sound of water and markets minimal noise.

Feel differs too. Concept2 lets you change the stroke feel with a damper. The WaterRower has no setting; resistance follows force. Beginners may prefer having nothing to adjust, while experienced rowers may miss the damper.

Data: the Concept2 is the standard for comparable numbers

If you want your times to mean something outside your home, the Concept2 wins.

Concept2's page says events and races rely on the RowErg because results are consistent and comparable, and its online ranking holds over a million results. The PM5 feeds the free Online Logbook and ErgData.

The WaterRower's S4 monitor with Bluetooth connects to WaterRower Connect, which NOHRD says offers programmed workouts, performance tracking, heart rate and competition with other WaterRower users.

Both record your progress. Only the Concept2 produces numbers that line up with gym machines and published benchmarks. Heart-rate pairing works on both; our Garmin Forerunner 55 review covers a low-cost watch for the job.

Warranty and support: the WaterRower covers parts a year longer

Both makers give five years on the frame.

On parts, the WaterRower is ahead: NOHRD lists three years, including commercial use. Concept2 gives two years on moving parts and on the PM5 monitor.

On returns, the Concept2 is ahead: a 30-day money-back guarantee on factory-direct sales in the US and Canada, with the buyer paying shipping. We found no US return window on NOHRD's pages.

Both sell spare parts. Concept2 publishes manuals, schematics and maintenance guides in one support section. NOHRD states parts can be ordered individually. Read the full WaterRower Original Oak review for the warranty wording.

Upkeep: the Concept2 needs chain oil, the WaterRower needs water treatment

Neither machine is maintenance-free, and the chores are different.

The Concept2 runs a nickel-plated steel chain. Concept2's support section has a maintenance page for the RowErg, and the owner letter quoted on the product page mentions oiling the chain. The PM5 takes two D-cell batteries, topped up by flywheel power during workouts.

The WaterRower's tank needs purification tablets on a regular schedule, per NOHRD's FAQ. Two Puritabs and a water pump ship in the box. The wood benefits from occasional care products, and the rails and rollers should be kept free of dust.

The S4 monitor takes four AA batteries.

Neither job takes long. The difference is that a neglected chain gets noisy, while a neglected tank gets cloudy. Pick the chore you will actually do.

Assembly and delivery: both arrive in boxes, both need tools

The Concept2 ships in one box with standard legs, 68 lb, or two boxes with tall legs, 84 lb in total, per Concept2's shipping table. Tools and illustrated assembly instructions are included, and orders typically ship within one to three business days.

The WaterRower arrives in two packages, per NOHRD: a 28.5 x 23.5 x 24.5 in. box and an 84.25 in. long box for the rails. Assembly is required, and you fill the tank yourself with the included pump.

The long rail box is worth noting for apartment buyers. An 84 in. carton needs a clear turn in a hallway or stairwell, which is worth measuring before delivery day.

How we compared them

We read each maker's product page, specification tables, warranty statement and shipping information on October 21, 2026, and recorded every figure with its source.

Where a page disagreed with itself, as NOHRD's did on weight and user limit, we report both values and explain which we would rely on. Where a figure was missing, such as a decibel rating on either machine, we say so instead of estimating.

Scores use the same four pillars as every review on this site: ease, features, value and support. We did not run sessions on either rower, and nothing in this comparison describes one.

What owners report: one rating, one blank

Concept2's product page showed 4.9 from 264 reviews on October 21, 2026, collected on its own site.

NOHRD's US product page displayed no rating or review count for the Original Oak that day.

We could not read retailer reviews for either machine, so we do not weight owner feedback in this comparison.

Choose the Concept2 if, choose the WaterRower if

The decision is mostly about the room and the rower's body.

• Choose the Concept2 RowErg if you want the lower price, a clearly documented 500 lb rating, a 38 in. inseam limit or a 20 in. seat option.
• Choose the Concept2 RowErg if you want split times that compare with gym and race machines.
• Choose the WaterRower Original Oak if the rower will live in a living room and must look like furniture.
• Choose the WaterRower Original Oak if upright storage in a 20 by 22.25 in. footprint is the deciding factor, or if you want a 3-year parts warranty.
• Consider the Hydrow Wave instead if guided classes on a screen are what will keep you rowing; read the Hydrow Wave review for the membership costs.
• Consider no rower at all if your floor cannot spare 8 ft; the WalkingPad folding treadmill review covers a flatter option.

Building the rest of the room

Whichever rower you choose, conditioning is only half a home gym.

Adjustable dumbbells such as the Bowflex SelectTech 552 add strength work in a small footprint, and our adjustable dumbbells vs kettlebells comparison helps choose between the two. The adjustable weight bench guide covers the bench to go with them.

Our spec-sheet explainer applies the same reading method used here to any piece of equipment.

Bottom line

For most home rowers, the Concept2 RowErg is the better buy: $209 cheaper at list, clearer about its limits, higher off the floor and the reference machine for comparable numbers.

The WaterRower Original Oak earns its premium in a specific case: a shared living space where quiet, appearance and upright storage matter more than data. Before buying it, confirm the user-weight rating with NOHRD, because its own page lists two.

Frequently asked questions

Sources

Every figure on this page comes from the pages below, read on the date shown. Prices and specifications change - confirm at checkout.

• Concept2: RowErg product page (price, specifications, shipping, ratings) · checked 2026-10-21
• Concept2: RowErg warranty and money-back guarantee · checked 2026-10-21
• NOHRD US: WaterRower Original Oak product page (price, specification tables, warranty) · checked 2026-10-21
• NOHRD US: WaterRower range page and FAQ · checked 2026-10-21