# Narwal Flow 2 vs Roborock Saros 20 Flow

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.

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

## 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 |

## 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 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](https://www.housedigest.com/2284562/roborock-saros-20-flow-review/)
- 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](https://eftm.com/2026/09/review-roborock-saros-20-flow-thge-best-all-rounder-281056)

## 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.

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