Concept2 vs WaterRower: Air vs Water Resistance Rowing Machines Compared

Last updated January 2025

Concept2 vs WaterRower: Air vs Water Resistance Rowing Machines Compared

The rowing machine has experienced a remarkable renaissance in home fitness, driven by its unmatched full-body training stimulus, low-impact nature, and the visibility boost from popular fitness programs and streaming content. At the apex of this market sit two iconic brands: Concept2, the undisputed standard of competitive rowing and CrossFit for over four decades, and WaterRower, the premium alternative famous for its water-resistance mechanism and starring role in “House of Cards.”

These machines don’t just represent different brands — they embody fundamentally different approaches to simulating on-water rowing. Concept2’s air-resistance flywheel delivers quantifiable, performance-tracked rowing that has standardized indoor rowing competition worldwide. WaterRower’s water-tank system recreates the tactile feel and sound of pulling an oar through water, prioritizing sensory experience over data precision.

This research-backed comparison examines every factor that matters for home gym owners: resistance mechanics, noise characteristics, maintenance demands, build quality, monitoring capabilities, and the intangible factors of feel and motivation that ultimately determine which machine will earn your long-term commitment.

Brand Background and Heritage

Concept2: The Competitive Standard

Founded in 1976 by Dick and Pete Dreissigacker in Morrisville, Vermont, Concept2 began as an oar manufacturer for competitive rowing before introducing the Model A indoor rower in 1981. The company has since released the Model B, C, D, and the current RowErg (formerly Model D and E), with each generation refining the air-resistance flywheel mechanism that defines the brand.

Concept2’s dominance in competitive rowing is absolute. Every World Rowing Indoor Championship, CrossFit Games event, and Olympic training facility uses Concept2 machines. The Performance Monitor (PM5) provides standardized metrics that allow direct comparison of times across any machine worldwide — a feature critical to competitive rowers and essential for online leaderboards and virtual racing.

The company remains privately owned, manufactures primarily in the United States, and operates with a product-first philosophy that prioritizes function over aesthetics. Concept2 rowers are famously utilitarian — they look like gym equipment because they are gym equipment, designed to survive decades of commercial use.

WaterRower: The Aesthetic Alternative

WaterRower was founded in 1988 by John Duke, a former Yale and US National Team rower, with the explicit goal of creating a rowing machine that replicated the physical dynamics and sensory experience of rowing on water. The patented WaterFlywheel uses a paddle suspended in a water tank to create resistance, producing both the feel and distinctive sound of rowing through water.

Headquartered in Warren, Rhode Island, with manufacturing in the US and UK, WaterRower has positioned itself as the premium residential rowing experience. The brand gained massive mainstream visibility through its prominent placement in the Netflix series “House of Cards,” where Frank Underwood’s WaterRower became a character in itself. This exposure introduced millions of non-rowers to the brand and the concept of home rowing.

WaterRower’s philosophy centers on aesthetics and experience integration. Machines are handcrafted from solid hardwood (ash, oak, walnut, cherry, and others) with a design language intended to complement home interiors rather than dominate them. The company explicitly markets to residential users who want beautiful fitness equipment that doesn’t require hiding in a basement.

At-a-Glance Comparison

Overall Winner: Concept2 for performance and value; WaterRower for aesthetics and experience.

Resistance Types: Air vs Water

Air Resistance (Concept2)

The Concept2 uses a flywheel with fan blades that push against air. The harder you pull, the greater the air resistance — creating a naturally variable resistance curve that automatically scales with effort. The spiral damper (settings 1-10) adjusts how much air enters the flywheel housing, changing the “feel” of the stroke from light and quick (setting 1) to heavy and powerful (setting 10).

Performance characteristics:

• Resistance increases exponentially with stroke power — the harder you pull, the more it fights back
• No maximum resistance ceiling — elite athletes can generate power that would overwhelm water-resistance systems
• The damper setting affects drag factor but not “difficulty” — proper technique produces optimal speed at any setting
• Recovery between strokes is active — the spinning flywheel must be decelerated and re-accelerated each stroke

The air-resistance system rewards technique refinement. Small improvements in stroke efficiency produce measurable speed increases, making Concept2 rowing deeply engaging for performance-oriented users.

Water Resistance (WaterRower)

The WaterRower’s WaterFlywheel consists of a paddle suspended in a water tank. Pulling the handle rotates the paddle through the water, with resistance created by the paddle’s displacement. Like Concept2, resistance increases with effort — the harder you pull, the more water the paddle must move.

Performance characteristics:

• Resistance curve more closely mimics on-water rowing — the “catch” (start of stroke) feels heavier as the paddle engages stationary water
• Resistance is determined by water volume in the tank (add/remove water to change baseline)
• Maximum resistance is capped by water volume and paddle design — very strong users may find the top end limiting
• Recovery between strokes feels more like gliding on water — the paddle decelerates naturally in the water

The water-resistance system feels more organic and less mechanical. The acceleration through the stroke and deceleration during recovery more closely replicate the sensation of rowing a boat, which many users find more pleasant and sustainable for longer sessions.

Noise Levels: A Critical Difference

Noise is often the deciding factor for home gym owners, particularly those in apartments or shared living situations.

Check price at Amazon — Concept2

The Concept2 is objectively loud. At moderate intensity, it will be heard throughout most homes and apartments. At sprint intensity, it can disturb neighbors in adjacent units. This noise is the primary reason many apartment dwellers choose WaterRower or alternative cardio equipment.

The WaterRower’s sound profile is different — the swooshing water noise is generally perceived as more pleasant than the mechanical whoosh of Concept2’s flywheel, and at significantly lower volumes. Many users find the water sound meditative. It will still be audible in adjacent rooms but rarely disturbs neighbors through walls.

Check price at Amazon — WaterRower

Maintenance Requirements

Concept2 Maintenance

The Concept2 is famously low-maintenance — a primary reason for its commercial dominance:

• Chain: Lubricate every 50 hours of use (or monthly for regular users) with mineral oil or Concept2 chain oil — 2-minute task
• Flywheel: Vacuum or wipe out dust accumulation every 3-6 months
• Rail: Wipe clean of sweat and dust; no lubrication needed on the nickel-plated chain
• Monitor: Two D-cell batteries last 1-2 years; occasional firmware updates via USB
• Monorail: Inspect for wear; replace seat rollers every 5-10 years under heavy use

Total annual maintenance time: approximately 30 minutes. The Concept2 is essentially bulletproof — machines from the 1990s are still in active commercial use with minimal intervention.

WaterRower Maintenance

The WaterRower requires more attentive maintenance due to its water tank:

• Water purification: Add purification tablets every 6 months to prevent algae growth
• Tank cleaning: Empty, clean, and refill every 1-2 years depending on water quality
• Water level: Maintain correct water level for desired resistance baseline
• Bungee cord: Inspect and potentially replace every 3-5 years — the recoil mechanism depends on cord elasticity
• Wood frame: Periodic oiling or treatment depending on wood type and environment
• Tank seal: Inspect annually for leaks (rare but possible)

Total annual maintenance time: approximately 2-3 hours including biannual tablet additions and periodic tank maintenance. The water system adds complexity that the Concept2 simply doesn’t have.

Monitor Features: PM5 vs S4/SmartRow

Concept2 PM5 Performance Monitor

The PM5 is the gold standard of rowing monitors and a decisive advantage for performance-focused users:

• Metrics: Time, distance, pace (per 500m), watts, calories, stroke rate, heart rate (with HR strap)
• Memory: Stores workout data internally; transferable via USB or LogCard
• Connectivity: Bluetooth and ANT+ for heart rate straps; wireless racing capability
• Online integration: Direct connection to Concept2 Online Logbook, Strava, and third-party apps
• Games: Fish Game, Darts, Target Training for engagement
• ErgData app: iOS/Android companion for enhanced tracking and automatic logbook uploads
• Accuracy: Calibrated and consistent across all machines worldwide — your 2,000m time is comparable to anyone else’s

The PM5 enables structured training through preset workouts, pace boats, and interval programming. Most importantly, the online leaderboards and ranking system create endless motivation through competition — you can compare your times against every rower in the world, by age, weight, and gender categories.

WaterRower S4 and SmartRow

WaterRower offers two monitoring options:

S4 Monitor (standard):

• Metrics: Time, distance, intensity (arbitrary units), stroke rate, heart rate (with strap)
• Display: Basic LCD with limited data presentation
• Programming: Limited workout presets
• Connectivity: No built-in wireless connectivity
• Accuracy: Not standardized across machines — times aren’t directly comparable

The S4 monitor is widely considered the WaterRower’s weakest element. It provides basic feedback but lacks the sophistication, connectivity, and accuracy of the PM5.

SmartRow (upgrade — $245 additional):

• Metrics: All standard rowing metrics with improved power measurement
• Connectivity: Bluetooth for app integration
• App integration: SmartRow app with workout tracking, challenges, and virtual racing
• Accuracy: Significantly improved over S4 with force curve analysis

The SmartRow upgrade transforms the WaterRower into a viable performance training tool, but the additional cost brings total investment to $1,340-$1,940 — substantially above the Concept2’s price. Even with SmartRow, the ecosystem and competitive features don’t match Concept2’s mature platform.

Build Quality and Longevity

Concept2 Durability

The Concept2 RowErg is engineered for decades of commercial abuse:

• Frame: Aluminum I-beam monorail with steel front leg — corrosion resistant and structurally bombproof
• Chain: Nickel-plated steel chain — rarely needs replacement before 10+ years
• Seat: Contoured, durable composite — replacement seats available and affordable
• Footprint: Separates into two pieces for storage without tools
• User capacity: 500 pounds
• Commercial lifespan: 10-20 years of daily multi-user training
• Residential lifespan: Effectively indefinite with minimal maintenance

Concept2’s spare parts availability is exceptional — you can rebuild virtually any component, including parts for machines discontinued decades ago. This repairability supports the brand’s sustainability claims and ensures your investment lasts indefinitely.

WaterRower Durability

The WaterRower is built to residential standards with premium materials:

• Frame: Solid hardwood (ash, oak, walnut, cherry) with metal hardware — beautiful but susceptible to denting, scratching, and humidity damage
• Tank: Polycarbonate — durable and leak-resistant but can degrade with UV exposure
• Bungee recoil system: Requires periodic replacement (3-5 years typical)
• User capacity: 700 pounds (S4) or 1,000 pounds (club models)
• Storage: Stands vertically on end — minimal footprint when stored (21” x 20”)
• Residential lifespan: 10-15 years with proper maintenance
• Commercial lifespan: 5-8 years in multi-user environments

The wood frame requires environmental consideration — extreme humidity can cause warping, while dry conditions may create cracks. The WaterRower is best kept in climate-controlled spaces, not uninsulated garages subject to temperature and humidity swings.

Space Requirements

The WaterRower has a slightly smaller operating footprint and significantly more convenient vertical storage — a meaningful advantage for space-constrained homes. The Concept2’s two-piece separation is functional but less elegant and takes slightly more time.

Community, Following, and Resale Value

Concept2 Community

The Concept2 ecosystem is unmatched in rowing:

• Online Logbook: Millions of users, searchable rankings, challenges (Annual Million Meter Club, Holiday Challenge)
• Dark Horse Rowing, Training Tall: YouTube channels with extensive technique and workout content
• CrossFit integration: Standard equipment in every CrossFit box worldwide
• Competitive rowing: Official equipment for every indoor rowing championship
• Resale value: 60-75% of original price even after 5-10 years of use

WaterRower Community

The WaterRower community is smaller but passionate:

• WaterRower Club: Online community with workout sharing
• CityRow, Row House: Boutique studios using WaterRowers exclusively
• Aesthetic appeal: Strong following among design-conscious home gym owners
• Celebrity association: House of Cards legacy maintains brand recognition
• Resale value: 50-60% of original price for well-maintained machines

Who Should Choose Concept2?

Concept2 is the right choice if you:

• Value performance data — the PM5 and online ecosystem are unmatched
• Want competitive motivation — leaderboards, rankings, and challenges drive consistency
• Train at high intensity — the air-resistance system has no ceiling
• Prioritize low maintenance — minimal upkeep for decades of service
• May compete in indoor rowing — the competitive standard by definition
• Need commercial-grade durability — gyms, CrossFit boxes, multi-user households
• Plan to resell — exceptional resale value retention
• Don’t mind the industrial aesthetic — function over form
• Have space for the footprint — or don’t mind the two-piece split storage

Who Should Choose WaterRower?

WaterRower is the right choice if you:

• Prioritize aesthetics — beautiful furniture-grade hardwood that complements interiors
• Need quiet operation — significantly lower noise levels for shared spaces
• Love the water rowing feel — the sensory experience is genuinely superior for many users
• Have limited storage space — vertical storage is compact and elegant
• Want a pleasant sound profile — the water swoosh is meditative vs mechanical
• Train at moderate intensities — the resistance ceiling rarely limits recreational users
• Value craftsmanship — handcrafted hardwood construction
• Have climate-controlled space — to protect the wood frame
• Don’t need competitive data — basic metrics sufficient for fitness-focused training

The Verdict

The Concept2 vs WaterRower decision ultimately separates performance-focused rowers from experience-focused rowers.

Concept2 wins on every objective performance metric: superior data, standardized competition capability, lower maintenance, longer lifespan, better resale value, and a more extensive community ecosystem. For CrossFit athletes, competitive rowers, data-driven trainers, or anyone who derives motivation from measurable improvement and competition, Concept2 is the clear and correct choice. The $990 price represents exceptional value given the monitor capabilities and 20+ year lifespan.

WaterRower wins on subjective experience metrics: beautiful aesthetics, quieter operation, more pleasant sound, organic rowing feel, and compact storage. For home users who view rowing as sustainable cardio rather than competitive sport, who share walls with neighbors or family members, and who want equipment that enhances rather than detracts from their living space, the WaterRower delivers a genuinely superior daily experience. The premium pricing ($1,095-$1,695) purchases tangible aesthetic and acoustic benefits.

For the significant number of buyers who prioritize noise reduction above all else, the WaterRower’s 15-20 dB advantage is decisive. For everyone else, the Concept2’s combination of performance, durability, and value is difficult to justify paying more to avoid.

Both machines provide excellent full-body cardiovascular training. Both engage roughly 86% of muscle mass with minimal joint impact. And both, used consistently, will transform your fitness. The choice between them says less about which is “better” and more about what you value in your training environment.

Last updated: January 2025. Prices and specifications subject to change. Verify current details with manufacturers.