Narwal Flow 2: Specs, Features, Pros & Cons
At 95 mm tall, and able to climb tall door saddles, Narwal's Flow 2 is a hard-floor mopping specialist that can still get around an ordinary house. Its mopping hardware has no close equivalent in the category, and the rest of the robot is built to keep up.
Its mop is a flat track that runs under the robot and is rinsed with heated water while it moves, so the surface pressed against the floor keeps being replaced with a clean one. The track is held down with constant pressure, an arm extends it along the skirting, and the dock washes it hot between runs. The vacuum side keeps up. Suction is very high, a floating roller resists tangles, and the battery is large. Navigation combines a laser with twin color cameras for object recognition, and Narwal keeps that processing on the robot, with nothing sent off for analysis. It is Narwal's flagship and is priced like one.
What it gives up is mostly in daily routine. The onboard dust bin is small, so the robot returns to the dock often on a dusty day. The dock's drying air is cooler than on several rivals, and the track lifts only a little over carpet, so a deep-pile rug is poor ground for it. Narwal's app is also younger than those of the longest-running robot brands, and it shows its age in small quirks.
It fits a home of tile, wood or laminate where mopping quality decides the purchase, and where the owner will tolerate a few software rough edges for a mop mechanism no rival matches yet.
Category strengths
Where the Narwal Flow 2 beats the median
- Much stronger suction ?31,000 Pa vs 19,750 Pa (median)
- A much higher threshold clearance ?40 mm vs 24 mm (median)
- A bigger battery ?7,000 mAh vs 5,200 mAh (median)
- A bigger water tank ?130 ml vs 110 ml (median)
- A higher mop lift ?12 mm vs 10.5 mm (median)
- Slightly quieter operation ?56.5 dB vs 60.1 dB (median)
- A slightly higher mop wash temperature ?80 °C vs 75 °C (median)
- A slightly more compact design ?95 mm vs 96.8 mm (median)
Where the Narwal Flow 2 trails the median
- A lower warm-air drying temperature ?40 °C vs 50 °C (median)
How this VS Score was computed
Score 63: each known spec is measured against the median of all robot vacuums (58 products), then weighted; 50 means level with that median. In classes of six or more, a value beyond the class’s 10th–90th percentile range counts as that limit, so one extreme product cannot set the scale. 42% of the scoreable weight could be used; unknown values, features not applicable to this class and proxies (battery capacity where a rated life exists) add or remove nothing.
| Specification | This product | Cohort median | Score weight | Points moved |
|---|---|---|---|---|
| Suction power | 31,000 | 19,750 | 1.2 | +33.6 |
| Mopping | Yes | 79% of the class have it | 0.6 | +30.0 |
| Edge-cleaning extension | Yes | 79% of the class have it | 0.4 | +20.0 |
| Automatic mop removal | No | 37% of the class have it | 0.4 | −19.2 |
| Threshold clearance | 40 | 24 | 0.3 | +9.9 |
| Battery capacity | 7,000 — capped at the class’s upper range (6,400) | 5,200 | 0.5 | +6.0 |
| Water tank | 130 | 110 | 0.3 | +2.7 |
| Mop lift | 12 | 10.5 | 0.3 | +2.1 |
| Noise level | 56.5 — capped at the class’s lower range (56.9) | 60.1 | 0.4 | +1.2 |
| Warm-air drying temperature | 40 — capped at the class’s lower range (45) | 50 | 0.2 | −1.0 |
| Mop wash temperature | 80 | 75 | 0.3 | +0.9 |
| Height | 95 | 96.8 | 0.5 | +0.5 |
| Navigation | LiDAR | LiDAR | 1 | +0.0 |
| Dustbin capacity | 300 | 300 | 0.4 | +0.0 |
Not scored: Carpet detection (standard for the class (98% have it)); Cleaning modes (unknown: not scored); Max cleaning area (unknown: not scored); Mapping (standard for the class (98% have it)); Multi-floor maps (unknown: not scored); Obstacle avoidance (standard for the class (100% have it)); No-go zones (standard for the class (100% have it)); Runtime (unknown: not scored); Recharge & resume (standard for the class (95% have it)); Self-empty dock (standard for the class (91% have it)); Auto-refill mop (standard for the class (87% have it)); Mop self-cleaning (standard for the class (92% have it)); Automatic detergent dispenser (unknown: not scored); Dirt detection & re-mop (unknown: not scored); App control (standard for the class (100% have it)); Voice assistant (standard for the class (100% have it)); Scheduling (standard for the class (100% have it)); Zone / room cleaning (standard for the class (100% have it)); HEPA filter (unknown: not scored); Washable filter (unknown: not scored); Anti-tangle brush (standard for the class (98% have it)); Removable mop pads (unknown: not scored).
Editor’s note
Narwal's Flow 2 is the most interesting mopping robot of 2026, and for once the interesting part is not the suction number. The FlowWash system runs a rolling track mop that is rinsed with heated water continuously as it cleans, so the pad is not smearing yesterday's coffee across today's kitchen, which is the core failure of every spinning-pad design. Add 12N of downward pressure, an extending arm for edges, and a dock that washes at up to 80 C and the mopping hardware here is about as advanced as this category currently gets.
The vacuum side holds up too: 31,000 Pa rated suction, a floating anti-tangle roller, and a 7,000 mAh battery good for a rated 275 minutes, with a 2.5L dock bag Narwal rates at 120 days. Navigation uses dual RGB cameras plus LiDAR, and object recognition is strong: reviewers consistently rank it among the best at not eating cables. Processing stays on-device, which privacy-minded buyers will appreciate.
Now the caveats, because there are real ones. The onboard dustbin is a small 300ml, so the robot shuttles back to the dock more often in messy homes. Independent testing found stain removal good but short of what the hardware promises, and Narwal's app remains less mature than Roborock's, with more quirks and occasional connectivity complaints. The track mop also lifts only 12 mm, so deep-pile carpet homes should think twice, though carpet-avoidance modes are configurable.
This is a hard-floor specialist's machine, priced like one. If your home is mostly tile, wood or laminate and mopping quality is the reason you are shopping, the Flow 2 is the one to pick. For mostly carpeted floors, or for the most debugged software over the most ambitious hardware, Roborock's equivalent flagship is the safer spend.
Specifications
Quality bars show where each figure sits between the lowest and highest of the 58 robot vacuums this VS Score is measured against.
Cleaning
Navigation
Battery & dock
Design
Smart features
Maintenance & filtration
Sources and verification
Where the specifications come from
- Official product pageus.narwal.com
- Retailer listing (cross-check)amazon.com
Verification
- First published
- Specifications last checked
- Sheet completeness
- 29 of 39 specifications verified; the rest show as Unknown and are never estimated or scored
- Page type
- Product specification page — Compiled from the manufacturer’s published specifications and the cited sources; this is not a hands-on test.
- Basis
- Research-based: specifications and editorial text were compiled from the documents listed here and the manufacturer’s published data. We have not tested this unit ourselves; where independent measurements are mentioned they belong to the linked publication.
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The bottom line
The Narwal Flow 2 earns a VS Score of 63, above the median of the 58 robot vacuums it is measured against (a score of 50 is level with that median).
- Who it’s for
- Hard-floor-dominant homes where mopping quality is the whole point. The continuously self-washing track mop, heated dock and strong obstacle avoidance are the best mopping package here.
- Who should look elsewhere
- Carpet-heavy homes, given the track mop's modest lift, and anyone who prizes debugged, boring reliability over ambitious hardware. Narwal's app is still less mature than Roborock's.
- The trade-off that matters
- The most advanced mop mechanism in the category, paired with a small dustbin and younger software: the hardware is ahead of the experience.
- The main alternative
- Roborock Qrevo Edge 3 Pro: a safer all-rounder if your home mixes carpet and hard floors, with better threshold climbing and a steadier app.
The VS Score is calculated from the weighted specifications above, each measured against the median of comparable robot vacuums — a shortlisting guide, not a substitute for your own priorities. See how we score.
