Narwal Flow 2 vs Roborock Saros 20
Researched by Riley Hart · prices checked Oct 31, 2026
As of Oct 31, 2026, the Narwal Flow 2 costs $1,300 and the Roborock Saros 20 costs $1,600, so the Narwal Flow 2 is $300 cheaper. The Narwal Flow 2 scores higher in our ranking (6.3 vs 5.8 out of 10). Pick the Narwal Flow 2 for pet homes with mostly hard floors. Pick the Roborock Saros 20 for low furniture and tall thresholds.
- Suction
- 31,000 Pa
- Navigation
- Laser based 3D mapping
- Mopping
- Yes
- Runtime
- 7,000 mAh battery
A well rounded flagship for homes with pets and mostly hard floors. Vacuum Wars measured strong suction, no hair wrap and good obstacle avoidance, and its retest after a firmware update rated the mopping well above average. Tom's Guide was less impressed with edges and corners, and the 3.74 in body will not fit under the lowest furniture.
Full Narwal Flow 2 review →- Suction
- 36,000 Pa
- Navigation
- 3D ToF and camera
- Mopping
- Spinning pads
- Runtime
- About 200 min
A strong pick for mixed carpet and hard floor homes with low furniture and tall door thresholds, since it is under 3.2 in tall and climbs higher steps than any robot Vacuum Wars has tested. Reviewers rate its suction and edge cleaning highly but split on mopping, and Tom's Guide found the pads streaky. If spotless mopping is your main goal, a roller mop model may suit you better.
Full Roborock Saros 20 review →Side by side
| Narwal Flow 2 | Roborock Saros 20 | |
|---|---|---|
| Price | $1,300 | $1,600 |
| 3 year cost | $1,300 | $1,600 |
| Our score | 6.3/10 | 5.8/10 |
| Rank in Floors | #31 | #39 |
| Status | on sale | on sale |
| Warranty | 1 year limited (Narwal warranty policy for purchases outside the EU and Switzerland) | 1 year limited (Roborock US store) |
| Suction | 31,000 Pa (brand claim); Vacuum Wars measured 1.92 kPa and 18 CFM, above average | 36,000 Pa (brand claim); Vacuum Wars measured 15 CFM airflow |
| Navigation | Laser based 3D mapping with dual 1080p RGB cameras and a 10 TOPS AI chip | StarSight Autonomous System 2.0 with 3D ToF sensors and an RGB camera, no LiDAR turret |
| Obstacle avoidance | TwinAI Dodge with dual cameras; Vacuum Wars scored 20 of 24 objects avoided | Recognizes over 300 obstacle types (brand claim); Vacuum Wars scored 17 of 24 objects avoided |
| Mopping | Yes, self refreshing track roller mop with 12 N pressure and 140°F water, lifts 10 mm on carpet | Yes, dual spinning pads with up to 13 N pressure, FlexiArm extending pad, 20 mm lift on carpet |
| Self empty | Yes, into a 2.5 L disposable bag; Narwal says a bag lasts up to 120 days without pets or 90 days with pets | Yes, auto empties into a disposable bag; Roborock says a bag lasts up to 65 days |
| Dock features | Washes the mop at 212°F, dries it at 104°F, doses detergent; Narwal also sells a version with auto refill and drainage | RockDock washes pads with water up to 212°F, dries at 131°F, auto refills water, doses detergent and dries the dust bag |
| Runtime | 7,000 mAh battery; Vacuum Wars measured 38 min in a studio vacuum and mop run, while 9to5Google cleaned about 1,300 sq ft without a recharge | 6,400 mAh battery; BGR cites about 200 min per charge and about 150 min to recharge |
| Dustbin | 300 mL onboard bin (Vacuum Wars) | 260 mL onboard bin (Vacuum Wars) |
| Height | 3.74 in (95 mm) per Narwal | 3.14 in (79.8 mm) robot height per Roborock |
| Pet hair | Vacuum Wars measured 88% flattened pet hair pickup and 0% hair wrap | Vacuum Wars measured 88% flattened pet hair pickup and 0% hair wrap |
| App | Narwal app with Siri, Alexa and Google Assistant; Vacuum Wars lists Matter support, but Narwal's product page does not | Roborock app with Matter, Alexa and Google Home support plus built in voice control |
| Threshold | Up to 1.57 in (40 mm) per Narwal; Vacuum Wars cleared 32 mm easily and 38 mm on a second try | Up to 3.46 in double layer thresholds with AdaptiLift Chassis 3.0 (brand claim); Vacuum Wars cleared a 57 mm single step |
| Best for | pet homes with mostly hard floors | low furniture and tall thresholds |
| Skip if | you need a robot under 3.5 in tall | mopping is your top priority |
Specs are maker claims unless a reviewer is named. Prices from the stores we link, checked daily.
What reviewers found
Narwal Flow 2
- Vacuum Wars (3.88/5): Lab tests found 84% sand removal from carpet, 88% flattened pet hair pickup, 0% hair wrap and 20 of 24 obstacles avoided; a retest after a firmware update put mopping well above average, but the studio vacuum and mop run lasted only 38 minutes. Source
- Tom's Guide: Picked up 100% of kitty litter on both floors, 100% of pet hair on hardwood and 80% on carpet, but only 30% and 20% of cereal; reviewer said edges and corners need manual cleaning and it does not live up to its price. Source
- 9to5Google: Cleaned about 1,300 sq ft with back to back vacuum and mop passes without stopping to recharge; reviewer rated it roughly equal to the Roborock Saros 20 but noted the taller body. Source
Roborock Saros 20
- Vacuum Wars (3.81/5): Lab tests found 89% sand removal from carpet, 88% flattened pet hair pickup, 0% hair wrap, 17 of 24 obstacles avoided, a record 57 mm threshold climb and an above average combined mopping score; battery coverage was slightly below average at about 1,038 sq ft per charge. Source
- CGMagazine (8.5/10): Performed strongly on pet hair, sand and fine dust on carpet and hard floors and fit under low furniture; reviewer flagged middling battery life, a small bin and trouble with loose cables. Source
- Tom's Guide: Picked up 100% of cereal and kitty litter on carpet and 70% of pet hair on carpet, but mopping left floors streaky and patchy and the pads fell off once crossing a cable. Source
Pros and cons
Narwal Flow 2
Pros
- Hot water track mop cleans sticky spills well
- No hair wrap in Vacuum Wars testing
- Above average obstacle avoidance and navigation
- Dust bag lasts up to 120 days
- Quiet robot and dock per several reviewers
Cons
- Expensive at $1,299.99
- 3.74 in tall, taller than Roborock's slim models
- Small 300 mL onboard bin
- Weak edge and corner cleaning in Tom's Guide testing
- False leak warnings from the dock in CGMagazine testing
Roborock Saros 20
Pros
- Very low 3.14 in body fits under most furniture
- Record threshold climbing in Vacuum Wars testing
- Strong suction and carpet pickup
- Excellent edge cleaning with extending arm and pad
- Dock washes pads in near boiling water
Cons
- Expensive at $1,599.99
- Mopping left streaks in Tom's Guide testing
- Small 260 mL onboard bin
- Still catches cables and gets stuck at times
Questions buyers ask
Which is better, the Narwal Flow 2 or the Roborock Saros 20?
The Narwal Flow 2 scores higher in our ranking (6.3 vs 5.8 out of 10). Pick the Narwal Flow 2 for pet homes with mostly hard floors. Pick the Roborock Saros 20 for low furniture and tall thresholds.
Which is cheaper?
The Narwal Flow 2 at $1,300, versus $1,600 for the Roborock Saros 20, checked Oct 31, 2026. Over 3 years with running costs: $1,300 vs $1,600.
What is the difference between the Flow 2 and the Saros 20?
Suction: 31,000 Pa (brand claim); Vacuum Wars measured 1.92 kPa and 18 CFM, above average on the Flow 2, 36,000 Pa (brand claim); Vacuum Wars measured 15 CFM airflow on the Saros 20. Navigation: Laser based 3D mapping with dual 1080p RGB cameras and a 10 TOPS AI chip on the Flow 2, StarSight Autonomous System 2.0 with 3D ToF sensors and an RGB camera, no LiDAR turret on the Saros 20. Obstacle avoidance: TwinAI Dodge with dual cameras; Vacuum Wars scored 20 of 24 objects avoided on the Flow 2, Recognizes over 300 obstacle types (brand claim); Vacuum Wars scored 17 of 24 objects… on the Saros 20.
Also consider
See all ranked →More comparisons
- Dreame X60 Max Ultra Complete vs Narwal Flow 2
- Narwal Flow 2 vs Roborock Qrevo Curv 2 Flow
- Eufy Omni S2 vs Narwal Flow 2
- Narwal Flow 2 vs Narwal Freo Z10 Turbo
- Ecovacs Deebot X12 OmniCyclone vs Narwal Flow 2
- Narwal Flow 2 vs Narwal Freo 20
- Ecovacs Deebot T90 Pro Omni vs Narwal Flow 2
- Narwal Flow vs Narwal Flow 2
All robot vacuums, ranked
See the ranking →Affiliate links. We may earn a commission. It never changes our score. Disclosure
We check prices every morning and compare them with each model's 2026 low. One email when real deals land, plus our 5 minute Friday roundup. Unsubscribe anytime.