# Narwal Flow 2 vs Roborock Saros 20

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.

Prices checked Oct 31, 2026. HTML version: https://robotsforthat.com/vs/narwal-flow-2-vs-roborock-saros-20/

## 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 |

## 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](https://vacuumwars.com/narwal-flow-2-review/)
- 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](https://www.tomsguide.com/home/the-narwal-flow-2-looks-slick-but-its-performance-misses-the-mark-for-a-usd1-500-robot-vacuum)
- 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](https://9to5google.com/2026/06/24/narwal-flow-2-review/)

### 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](https://vacuumwars.com/roborock-saros-20-review/)
- 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](https://www.cgmagonline.com/review/hardware/roborock-saros-20-robot-vacuum/)
- 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](https://www.tomsguide.com/home/home-appliances/roborock-saros-20-review)

## 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.

Full reviews: [Narwal Flow 2](https://robotsforthat.com/robot/narwal-flow-2/index.md), [Roborock Saros 20](https://robotsforthat.com/robot/roborock-saros-20/index.md)