Roborock Saros 20 Flow
No lab has tested it yet, so it is not in our ranking.
- 301 minRuntime per chargelonger than 62 of 65
- 1.8 inClimbs thresholds up tohigher than 57 of 65
- 0.6 inMop lift on carpethigher than 49 of 62
Is the Roborock Saros 20 Flow right for your home? Find out in 7 questions →
Before you buy, compare it with 2 recommended alternatives
Beside it, two models on sale today that come closest to it on score and price, with the same kind of station where we have them.
Green is the best of these 3, also when they share the lead.
| This model Roborock Saros 20 Flow Best on 3 facts | Higher score, 52% cheaper MOVA Z60 Ultra Roller Complete Best on 3 facts | Higher score, 27% cheaper Narwal Freo 20 Best on 3 facts | |
|---|---|---|---|
| Price and ranking | |||
| Lowest price | $1,499Amazon.com | $727MOVA (brand store) best | $1,099Narwal (brand store) |
| Score | not in our ranking | best | |
| Rank | – | rank 3 of 65 with an all-in-one station | rank 1 of 65 with an all-in-one station |
| Customer rating | ★ 4.2 · 4,501 reviews | – | ★ 4.4 · 59 reviews best |
| Mopping | |||
| Mop type same on all | roller mop | roller mop | roller mop |
| Mop lift on carpet higher is better | 0.6 in (15 mm) best | 0.6 in (14 mm) | 0.4 in (10 mm) |
| Automatic mop detach same on all | no | no | no |
| Washes the mop same on all | yes | yes | yes |
| Hot-air drying same on all | yes | yes | yes |
| Station | |||
| Station same on all | all-in-one station | all-in-one station | all-in-one station |
| Dust bag lasts longer is better | up to 65 days | up to 100 days | up to 120 days best |
| Plumbing hookup | – | no | – |
| Brush and obstacles | |||
| Anti-tangle brush same on all | yes | yes | yes |
| Obstacle avoidance | AI camera | 3D sensor (structured light) | AI camera |
| Climbs thresholds up to higher is better | 1.8 in (45 mm) | 1.9 in (48 mm) best | 1.6 in (40 mm) |
| Climbing system for high thresholds | yes (best) | yes (best) | no |
| Size, noise and age | |||
| Robot height lower is better | 3.5 in (9 cm) best | 3.8 in (9.6 cm) | 3.7 in (9.5 cm) |
| Noise not judged | – | 72 dB | – |
| On the market since | September 2026 | December 2025 | June 2026 |
Facts as the maker states them. A dash means the maker does not name it. Each model’s page gives the source of every fact. Noise is the maker’s own figure, so we do not judge it, and a customer rating only counts from 20 reviews.
Prices per store
On October 5, 2026 the lowest price for the Roborock Saros 20 Flow is $1,499 at Amazon.com, shipping to the United States included.
All prices include shipping to the United States. Sales tax is added at checkout. We may earn a commission when you buy through these links. It never changes our ranking.
| Store | Color | Price | Delivery time and returns | Reviews | Checked | Link to the store |
|---|---|---|---|---|---|---|
 Amazon.com blacklowest price sold by a third-party seller | black | $1,499lowest price since Sep 27: $1,499 | about 1–5 dayslowest pricereturns through the seller | ★ 4.2 (4,501) | 19 hours ago | Visit store ↗ |
Price history
Roborock Saros 20 Flow specifications
The numbers that matter first, then every fact by group. As published by the maker or the store we read it from.
Roborock · on the market since September 2026 · Also sold or tested as: Roborock Saros 20 Flow Complete source
Consumables: a 2.7 l dust bag in the station, which lasts up to 65 days.
Dimensionsrobot and dock
From the published dimensions. The robot passes under furniture with 3.6 in of clearance or more. The dock needs a spot 15 in wide and 17.9 in deep.
Suction and brushes 4 facts
- Suction power
Suction in pascal, as the maker measures it. More pascal helps on carpet, but it says little about how well the robot picks grit off a hard floor.
- 36,000 Pa
- Anti-tangle brush
A brush that guides hair to the side instead of letting it wind around the shaft. It saves the cutting work in homes with long hair or pets.
- yes
- Suitable for pet hair
Whether the robot copes with pet hair: a brush that hair does not wind around and a dock that empties the bin for you. Where the maker does not say so itself, we read it from those two.
- yes
- Dirt detection
A sensor notices where more dirt lies, at the doormat for example, and the robot cleans that patch longer or a second time.
- yes
Mopping 4 facts
- Mop type
How the mop is built: flat pads, two spinning discs or a roller. Discs press harder on dried-on dirt, a roller rinses itself while it works.
- roller mop
- Mop lift on carpet
How far the robot lifts the mop when it drives onto a carpet. From about 0.4 in (10 mm) a medium pile stays dry.
- 0.6 in (15 mm)
- Mop extends to the edges
The pad slides out along a wall or a baseboard, so the last few inches are mopped as well.
- yes
- Automatic mop detach
The robot leaves the mop at the dock before it vacuums a carpet, so the carpet never gets wet.
- no
Dock 10 facts
- Empties the dust bin
The dock empties the robot’s dust bin, usually after every run. You only empty the dock’s bag or bin.
- yes
- Bagless
The dock collects dust in a bin instead of a disposable bag. No bags to buy, but you empty it yourself.
- no
- Dust bag capacity
How much the dust bag in the dock holds.
- 2.7 l
- Dust bag lasts
How long the maker says a dust bag lasts with daily use. With pets or a lot of carpet it is shorter.
- up to 65 days
- Washes the mop
The dock washes the mop for you, so you do not rinse it by hand.
- yes
- Wash temperature
How hot the dock washes the mop. Above 140 °F (60 °C) grease comes off, which is what keeps a mop from smelling.
- 212 °F (100 °C)
- Dries the mop
The dock dries the mop afterwards, so it does not sit there wet and start to smell.
- yes
- Hot-air drying
Drying is done with warm air instead of cold. It is faster and it helps against smell.
- yes
- Dispenses detergent
The dock mixes detergent into the water itself, from its own bottle.
- yes
- Dock size (w × d × h)
The width, depth and height of the dock. Measure the spot you have in mind, and leave room for the lid and for the robot driving in.
- 15 × 17.9 × 17.8 in (38.1 × 45.4 × 45.1 cm)
Navigation and obstacles 7 facts
- Navigation
How the robot maps your home and follows that map. Lidar measures with a laser and works in the dark, a camera looks along and recognizes more.
- retractable LiDAR
- Obstacle avoidance
How the robot sees loose things on the floor, such as cables, socks or a pet accident. A camera with depth sensing sees more than a bumper that reacts on contact.
- AI camera
- Climbs thresholds up to
The highest threshold the robot takes, as the maker states it. Measure your own: the step into a bathroom or onto a balcony is often higher.
- 1.8 in (45 mm)
- Double threshold (two steps together)
Two steps close together, such as a threshold with a sliding-door track behind it: their combined height, as the maker measures it. Each brand measures with a different gap between the steps, so compare this figure across brands with care. For a single step, the threshold above applies.
- 3.5 in (88 mm)
- Climbing system for high thresholds
An extending leg or wheel that carries the robot over a high threshold. Without one it usually stops at about 0.8 in (2 cm).
- yes
- Camera on board
Whether the robot has a camera, and what for: to recognize obstacles, or also to show you a live picture of your home in the app.
- obstacle camera
- Stair-edge sensors
Sensors under the robot that see a drop, so it stops at the top of a staircase instead of falling down it.
- yes
Robot 4 facts
- Robot height
How tall the robot is. It decides whether it fits under your sofa, bed or cabinet.
- 3.5 in (9 cm)
- Robot diameter
How wide the robot is. Narrower gets between chair legs more easily, wider usually means a bigger dust bin.
- 13.9 in (35.3 cm)
- Robot weight
What the robot weighs. It counts most if you carry it up a staircase every day.
- 11.5 lb (5.2 kg)
- Dust bin in the robot
How much dust the robot holds before you empty it. It matters less with a self-emptying dock, which empties the bin after every run.
- 245 ml
Battery 3 facts
- Battery capacity
The capacity of the battery. It hints at the runtime, but how much the robot draws counts just as much.
- 6,400 mAh
- Runtime per charge
How long the robot cleans on one charge, at its quietest setting. After that it recharges and carries on where it stopped.
- 301 min
- Charging time
How long an empty battery takes to charge fully in the dock.
- 2.5 h
Smart features and warranty 4 facts
- Matter
Matter is the standard that lets devices from different makers work together. With it you can run the robot outside the maker’s own app.
- yes
- Voice assistants
Which voice assistants the robot works with, such as Google Assistant or Alexa.
- Alexa, Siri, Google Home
- Scheduled runs
You set days and times, and the robot starts by itself, also when you are not at home.
- yes
- Home Assistant
Whether the robot works with Home Assistant, the home automation software you run yourself. Official means the integration comes with Home Assistant itself, community that volunteers maintain it.
- official integration
Sources: us.roborock.com · amazon.com · vacuumwars.com · product.roborock.com · Manual · home-assistant.io
Frequently asked questions about the Roborock Saros 20 Flow
Does the Roborock Saros 20 Flow empty its own dust bin?
Yes. The station empties the robot’s dust bin after every run. The 2.7 l dust bag in the station lasts up to 65 days, the maker says.
Does the Roborock Saros 20 Flow wash and dry its own mop?
Yes. The station washes the mop itself, with water at 212 °F (100 °C). It then dries the mop with warm air.
Does the Roborock Saros 20 Flow work with Alexa, Google Home or Siri?
It works with Alexa, Siri and Google Home. It also supports Matter, so it fits into another brand’s app. Home Assistant has an official integration for this model.
How high a threshold can the Roborock Saros 20 Flow climb?
Thresholds up to 1.8 in (45 mm), the maker says. With its climbing system it also takes two steps close together, up to 3.5 in (88 mm) in all. Measure your own thresholds: the ones to a bathroom or balcony are often higher.
Does the Roborock Saros 20 Flow fit under low furniture?
The robot is 3.5 in (9 cm) tall, so it fits under furniture with at least 3.6 in of clearance. Its lidar turret retracts where space is tight.
Is the Roborock Saros 20 Flow suitable for pet hair?
Yes, the maker says. The brush guides hair to the side instead of winding it around the roller.
