For homes with several floor types that want the dock to pick the right mop and solution for each room; buyers focused on carpet get more for less elsewhere.
Amazon $1,499.99
For homes with lots of hard floor that want a roller mop with flagship suction and threshold climbing.
- Washes mop + emptiesDock
- 89% measuredCarpet pickup
- LiDAR + cameraNavigation
- RollerMop
- 3.5 inHeight
- 5 h 1 minRun time
Price checked October 26, 2026. As an Amazon Associate we earn from qualifying purchases.
Part of the Roborock Saros 20 line: See every Roborock Saros 20 generation.
- Lifted 89% of sand worked into carpet, with nothing tangled, in Vacuum Wars’ tests
- Covered over 1,400 sq ft per charge in Vacuum Wars’ test
- Self-cleaning roller mop scrubs with fresh water the whole run instead of smearing dirty pads
- Climbs stacked thresholds up to 3.46 in
- Picked up 76% of pet hair from carpet in Vacuum Wars’ test, behind the standard Saros 20
- The most expensive Saros 20 version
- Mop lifts rather than detaching, so it relies on a shield to keep rugs dry
The Roborock Saros 20 family
Every Roborock Saros 20 model we rank, smallest first. Ratings compare each against its own type.
| Model | Dock | Rating | Price |
|---|---|---|---|
| Roborock Saros 20 | Washes mop + empties | 3.9/5 | $1,599.99 |
| Roborock Saros 20 Sonic | Washes mop + empties | 4.2/5 | - |
| Roborock Saros 20 Flow (this one) | Washes mop + empties | 3.8/5 | $1,699.99 |
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.
Independent tests
What independent testers measured, on their own test floors with their own units. Carpet deep clean and pet hair are the share of debris lifted; these feed the Cleaning score.
| Tested by | Carpet deep clean | Pet hair | Hair tangle (0 = none) | Area per charge | Conditions |
|---|---|---|---|---|---|
| Vacuum Wars | 89% | 76.2% | 0 | 1,421 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
| Vacuum | |
|---|---|
| Claimed suction | 36,000 Pa |
| Main brush | dual anti-tangle brush system |
| Dustbin | 245 mL |
| Extending side brush | No |
| Mopping | |
| Mop | Roller, lifts 15 mm, extends to edges |
| Mop lift | 15 mm |
| Leaves mop at dock | No |
| Extending mop | Yes |
| Water tank | 67 mL |
| Dock | |
| Dock | Washes mop + empties |
| Self-empties | Yes |
| Washes mop | Yes |
| Hot-water wash | Yes |
| Hot-air drying | Yes |
| Detergent dosing | Yes |
| Water hookup option | No |
| Navigation & app | |
| Navigation | LiDAR + camera |
| Obstacle avoidance | Reactive AI with RGB recognition, 300+ object types |
| Climbs thresholds | 88 mm |
| Matter | Yes |
| Build | |
| Height | 3.5 in (89.8 mm) |
| Retracting LiDAR | Yes |
| Battery | 6,400 mAh |
| Run time | Up to 5 h 1 min |
| Weight | 11.5 lb (5.2 kg) |
| Warranty | 1 year |
| Released | 2026-09 |
Alternatives in this type
Best for homes with mostly hard floors that want a hot-washed roller mop and a bag-free dock; carpet-heavy and pet homes will get more from cheaper rivals.
Amazon $849.99Dreame’s 2024 flagship, now hard to find new; worth it only at a deep discount, as the X50 and L-series robots clean better.
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Compare the Roborock Saros 20 Flow with any other robot vacuum →
More from Roborock: every Roborock product ranked.