Narwal Flow 2 vs Roborock Saros 20 Flow
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 Flow costs $1,700, so the Narwal Flow 2 is $400 cheaper. The Roborock Saros 20 Flow scores higher in our ranking (6.4 vs 6.3 out of 10). Pick the Narwal Flow 2 for pet homes with mostly hard floors. Pick the Roborock Saros 20 Flow for hard floor homes with 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 claimed
- Navigation
- Retractable LiDAR
- Mopping
- SpiraFlow 2.0 roller mop
- Runtime
- Not listed in minutes
A top end pick for homes with high thresholds, mostly hard floors and pets, since the roller mop and 3.46 in climbing set it apart. Reviewers praised its mopping and pet hair handling but noted weak corner and edge cleaning. Skip it if you want the cheapest way to get a self cleaning dock.
Full Roborock Saros 20 Flow review →Side by side
| Narwal Flow 2 | Roborock Saros 20 Flow | |
|---|---|---|
| Price | $1,300 | $1,700 |
| 3 year cost | $1,300 | $1,777 |
| Our score | 6.3/10 | 6.4/10 |
| Rank in Floors | #31 | #30 |
| Status | on sale | on sale |
| Warranty | 1 year limited (Narwal warranty policy for purchases outside the EU and Switzerland) | 1 year (Roborock US store) |
| Suction | 31,000 Pa (brand claim); Vacuum Wars measured 1.92 kPa and 18 CFM, above average | 36,000 Pa claimed (Roborock); House Digest could not verify it but estimated floors came out about 90% clean |
| Navigation | Laser based 3D mapping with dual 1080p RGB cameras and a 10 TOPS AI chip | Retractable LiDAR (RetractSense) that lowers under furniture, plus VertiBeam side structured light (Roborock) |
| Obstacle avoidance | TwinAI Dodge with dual cameras; Vacuum Wars scored 20 of 24 objects avoided | Reactive AI with structured light and RGB camera, 300+ object types, objects down to 3 cm wide and 3 cm tall (Roborock); House Digest saw it get lost once |
| Mopping | Yes, self refreshing track roller mop with 12 N pressure and 140°F water, lifts 10 mm on carpet | SpiraFlow 2.0 roller mop, up to 240 rpm, 15 N pressure, 16 pressurized outlets, extends up to 44 mm for edges and lifts up to 15 mm on carpet (Roborock) |
| 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 empty into a bag, up to 65 days without manual emptying (Roborock); bag size not listed |
| 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 | Roller wash with water up to 212°F, 145°F warm air drying, auto detergent dosing, warm water refill of the robot tank (Roborock) |
| 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 | Not listed in minutes; Roborock says up to 200 m² per charge in standard vacuum and mop mode, 6,400 mAh battery, 150 min full charge |
| Dustbin | 300 mL onboard bin (Vacuum Wars) | n/a |
| Height | 3.74 in (95 mm) per Narwal | 3.54 in robot height (Roborock landing page); the store page lists 89.8 mm |
| Pet hair | Vacuum Wars measured 88% flattened pet hair pickup and 0% hair wrap | House Digest said heavy pet fur left no hair balls on the dual anti tangle brushes |
| App | Narwal app with Siri, Alexa and Google Assistant; Vacuum Wars lists Matter support, but Narwal's product page does not | Roborock app; works with Alexa, Siri, Google Home and Matter; built in Hello Rocky voice assistant (Roborock) |
| Threshold | Up to 1.57 in (40 mm) per Narwal; Vacuum Wars cleared 32 mm easily and 38 mm on a second try | Double layer thresholds up to 3.46 in (88 mm) with AdaptiLift Traverse 3.0 (Roborock); House Digest saw it clear a baby gate with a thud |
| Noise | n/a | No dB figure from Roborock or the reviews we read; House Digest says Carpet Boost is the loudest mode |
| Best for | pet homes with mostly hard floors | hard floor homes with tall thresholds |
| Skip if | you need a robot under 3.5 in tall | you are on a budget or need spotless corners |
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 Flow
- House Digest (9/10): Floors came out about 90% clean with some crumbs left in corners. Mopping fully removed ketchup and barbecue sauce and left wood almost dry. It cleared a baby gate but got lost once and had underwhelming edge cleaning. Source
- EFTM (92%): Australian review gave vacuuming 93%, mopping 93%, app 92% and features 93%. It cleaned dried jam and tomato sauce, needed two passes for Vegemite and struggled with crumbs near cabinets. Charging was slow. 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 Flow
Pros
- Roller mop removed ketchup and sauce in testing
- Climbs double thresholds up to 3.46 in
- Dock washes the roller with near boiling water
- Strong pet hair handling with no hair balls
- Matter, Alexa, Siri and Google Home support
Cons
- High price at $1,699.99
- Corner and edge cleaning was weak in reviews
- App settings are hard to find
- Slow 150 min recharge
- Detergent sold separately
Questions buyers ask
Which is better, the Narwal Flow 2 or the Roborock Saros 20 Flow?
The Roborock Saros 20 Flow scores higher in our ranking (6.4 vs 6.3 out of 10). Pick the Narwal Flow 2 for pet homes with mostly hard floors. Pick the Roborock Saros 20 Flow for hard floor homes with tall thresholds.
Which is cheaper?
The Narwal Flow 2 at $1,300, versus $1,700 for the Roborock Saros 20 Flow, checked Oct 31, 2026. Over 3 years with running costs: $1,300 vs $1,777.
What is the difference between the Flow 2 and the Saros 20 Flow?
Suction: 31,000 Pa (brand claim); Vacuum Wars measured 1.92 kPa and 18 CFM, above average on the Flow 2, 36,000 Pa claimed (Roborock); House Digest could not verify it but estimated floors came… on the Saros 20 Flow. Navigation: Laser based 3D mapping with dual 1080p RGB cameras and a 10 TOPS AI chip on the Flow 2, Retractable LiDAR (RetractSense) that lowers under furniture, plus VertiBeam side… on the Saros 20 Flow. Obstacle avoidance: TwinAI Dodge with dual cameras; Vacuum Wars scored 20 of 24 objects avoided on the Flow 2, Reactive AI with structured light and RGB camera, 300+ object types, objects down to 3… on the Saros 20 Flow.
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