Narwal Flow 2
Narwal’s flagship for hard-floor homes that want the best self-cleaning track mop and a low profile. Carpet-heavy homes get more from the cheaper Freo 20.
Amazon $1,499.99$1,499.99
The Narwal Flow 2 is the better robot vacuum overall, rated 3.9 to 3.5. The Narwal Flow 2 leads on cleaning and mopping. The Roborock Qrevo Slim costs $100 less ($1,399.99 vs $1,499.99).
Roborock Qrevo Slim
Only worth it deeply discounted for very low furniture; newer slim Roborocks clean better for less.
Amazon $1,399.99$1,399.99
Prices were last checked October 26, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Narwal Flow 2 for cleaning (measured 84% of sand from carpet, 88% of pet hair, no hair tangled vs measured 76% of sand from carpet, 80% of pet hair, some hair tangled (0.2)) and mopping (Roller, lifts 12 mm, extends to edges vs Dual spinning pads, lifts 10 mm, extends to edges).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every self-cleaning dock robot vacuum; a clear win is highlighted. How we rank explains each one.
| Factor weight | Narwal Flow 2 | Roborock Qrevo Slim |
|---|---|---|
| Overall rating | 3.9/5 | 3.5/5 |
| Cleaning 30% | 68 measured 84% of sand from carpet, 88% of pet hair, no hair tangled | 40 measured 76% of sand from carpet, 80% of pet hair, some hair tangled (0.2) |
| Value 25% | 11 $1,500 | 15 $1,400 |
| Dock 20% | 100 Self-empties the bin, washes the mop, hot-water mop wash, hot-air mop drying, doses detergent, optional water hookup | 100 Self-empties the bin, washes the mop, hot-water mop wash, hot-air mop drying, doses detergent, optional water hookup |
| Navigation 15% | 100 LiDAR + camera | 100 LiDAR + camera |
| Mopping 10% | 92 Roller, lifts 12 mm, extends to edges | 76 Dual spinning pads, lifts 10 mm, extends to edges |
Independent tests
Narwal Flow 2
| Tested by | Carpet deep clean | Pet hair | Hair tangle (0 = none) | Area per charge | Conditions |
|---|---|---|---|---|---|
| Vacuum Wars | 84% | 88% | 0 | 2,321 sq ft | Embedded sand in medium-pile carpet; flattened 2.5 in pet hair on carpet, two runs; 7 in hair tangle on hard floor (0 = none wrapped). |
Roborock Qrevo Slim
| Tested by | Carpet deep clean | Pet hair | Hair tangle (0 = none) | Area per charge | Conditions |
|---|---|---|---|---|---|
| Vacuum Wars | 76% | 80% | 0.2 | 1,160 sq ft | Embedded sand in medium-pile carpet; flattened 2.5 in pet hair on carpet, two runs; 7 in hair tangle on hard floor (0 = none wrapped). |
Specifications
| Narwal Flow 2 | Roborock Qrevo Slim | |
|---|---|---|
| Vacuum | ||
| Claimed suction | 31,000 Pa | 11,000 Pa |
| Main brush | Anti-tangle roller brush | DuoRoller Riser all-rubber brushes |
| Dustbin | - | 220 mL |
| Extending side brush | - | Yes |
| Mopping | ||
| Mop | Roller, lifts 12 mm, extends to edges | Dual spinning pads, lifts 10 mm, extends to edges |
| Mop lift | 12 mm | 10 mm |
| Leaves mop at dock | No | No |
| Extending mop | Yes | Yes |
| Water tank | 130 mL | 72 mL |
| Dock | ||
| Dock | Washes mop + empties | Washes mop + empties |
| Self-empties | Yes | Yes |
| Dust bag | 2.5 L | - |
| Washes mop | Yes | Yes |
| Hot-water wash | Yes | Yes |
| Hot-air drying | Yes | Yes |
| Detergent dosing | Yes | Yes |
| Water hookup option | Yes | Yes |
| Navigation & app | ||
| Navigation | LiDAR + camera | LiDAR + camera |
| Obstacle avoidance | Dual RGB cameras with an AI chip and vision language model; structured-light edge sensors | 3D sensors and RGB camera |
| Climbs thresholds | 30 mm | 20 mm |
| Matter | - | Yes |
| Voice assistants | Alexa, Google Assistant, Siri, Hey Nawa (built in) | Alexa, Google Assistant, Siri |
| Build | ||
| Height | 3.7 in (95 mm) | 3.2 in (82 mm) |
| Retracting LiDAR | No | No |
| Battery | 6,500 mAh | 5,200 mAh |
| Run time | - | Up to 3 h |
| Weight | 11 lb (5 kg) | 9 lb (4.1 kg) |
| Warranty | 1 year | 1 year |
| Released | 2026-04 | 2024-09 |