SwitchBot S20
No lab has tested it yet, so it is not in our ranking.
- Mopping station washes and dries the mop
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 SwitchBot S20 Best on 2 facts | Higher score, same price MOVA S70 Roller Best on 4 facts | Higher score, 17% dearer Narwal Freo Z10 Ultra Best on 3 facts | |
|---|---|---|---|
| Price and ranking | |||
| The lowest price today at a shop that delivers to you, delivery included. A price with an asterisk comes from a shop abroad, and its delivery cost is our own estimate. Lowest price | – | 399 €Amazon.de best | 465 €Amazon.de |
| Our own score out of 10: 60% lab tests, 25% shop ratings and 15% the maker’s facts. Price does not count. Score | not in our ranking | best | |
| The labs that have tested this model, each linked to its own review. Tests | – | Just A Dad Approved | Just A Dad Approved |
| Where the model stands in our ranking, among the robots with the same kind of station. Rank | – | rank 7 of 64 with an all-in-one station | rank 6 of 64 with an all-in-one station |
| The average of the stars buyers give at the shops, with the number of reviews behind it. We only compare it from 20 reviews. Customer rating | ★ 3.7 · 57 reviews | ★ 4.3 · 136 reviews best | ★ 4.1 · 187 reviews |
| Mopping | |||
| 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. When it matters
Source
| roller mop | roller mop | spinning pads |
| How far the robot lifts the mop when it drives onto a carpet. From about 10 mm a medium pile stays dry. In this comparisonWhen it matters
Source
| – | 12 mm | 12 mm |
| The robot leaves the mop at the dock before it vacuums a carpet, so the carpet never gets wet. When it matters
Source
| no | no (assumed) | no (assumed) |
| The dock washes the mop for you, so you do not rinse it by hand. When it matters
Source
| yes | yes | yes |
| Drying is done with warm air instead of cold. It is faster and it helps against smell. When it matters
Source
| yes | yes | yes |
| Station | |||
| The station the robot returns to, and what it does by itself, such as emptying the bin or washing and drying the mops. Station same on all | all-in-one station | all-in-one station | all-in-one station |
| How long the maker says a dust bag lasts with daily use. With pets or a lot of carpet it is shorter. In this comparisonWhen it matters
Source
| up to 90 days | up to 100 days | up to 120 days best |
| The dock can be connected to the tap and the drain, so you never fill or empty a tank. It does need a connection nearby. When it matters
Source
| yes (best) | no | no (assumed) |
| Brush and obstacles | |||
| 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. When it matters
Source
| yes (best) | no (assumed) | yes (best) |
| 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. When it matters
Source
| AI camera | AI camera | AI camera |
| 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. In this comparisonWhen it matters
Source
| 20 mm | 22 mm best | 20 mm |
| An extending leg or wheel that carries the robot over a high threshold. Without one it usually stops at about 2 cm. When it matters
Source
| no (assumed) | no (assumed) | no |
| Size, noise and age | |||
| How tall the robot is. It decides whether it fits under your sofa, bed or cabinet. In this comparisonWhen it matters
Source
| 11.5 cm | 9 cm best | 11 cm |
| The noise in decibels, in the setting its source names: makers mostly give the standard setting, shops often the highest. 65 dB is like a vacuum at half power, 55 dB like a conversation. In this comparisonWhen it matters
Source
| – | 73 dB | 56 dB |
| The month the model first went on sale. It shows how old the technology in it is. On the market since | September 2025 | February 2026 | January 2025 |
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.
Price history
SwitchBot S20 specifications
The numbers that matter first, then every fact by group. As published by the maker or the shop we read it from.
SwitchBot · on the market since September 2025
Consumables: a 4 l dust bag in the station, which lasts up to 90 days.
Dimensionsrobot and dock
From the published dimensions. The robot passes under furniture with 12 cm of clearance or more.
Suction and brushes 5 facts
- Suction power
Among the models we track
10,000 Pa on this model
Lowest
600 Pa Highest
42,000 Pa Middle
6,000 PaHigher than 579 of the 900 models we track.
When it matters
- Deep-pile carpet and rugs, where dust sinks in.
- Pet hair, sand and crumbs trodden into fibres.
- On hard floors the gain from a higher figure is small: the dust lies on top.
Source: us.switch-bot.com · checked on 26 Sept
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.
- 10,000 Pa
- Anti-tangle brush
473 of the 493 models we track have this.
When it matters
- Long hair and pet hair, which wrap around a bristle brush.
- Homes where you would rather not cut hair off the brush.
- Short hair and few pets hardly tangle anyway.
Source: us.switch-bot.com · checked on 26 Sept
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
- Extending side brush
When it matters
- Corners and edges along kickboards, where a round robot leaves a strip of dust.
- Rooms with many walls and furniture edges.
- In open rooms with few corners it adds little.
Source: vacuumwars.com · checked on 29 Sept
The side brush swings out in a corner or along a kickboard, so the dust there is swept in too.
- yes
- Carpet detection
When it matters
- Rugs and carpets, where the robot should raise its suction.
- Mopping in a home with rugs, which have to stay dry.
- Without carpets or rugs it has nothing to detect.
Source: us.switch-bot.com · checked on 2 Oct
The robot notices when it drives onto a carpet. Most then raise their suction, and a mopping robot lifts its mop or leaves it at the dock.
- detects carpet and boosts suction
- Suitable for pet hair
When it matters
- Dogs and cats that shed.
- Long-haired pets, whose hair wraps around a brush.
- Without pets, ordinary hair and dust need nothing special.
Source: derived, no source of its own · checked on 2 Oct
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
Mopping 3 facts
- Mop type
When it matters
- Homes with a lot of hard floor that you want mopped, not just wiped.
- Dried-on dirt in a kitchen, which spinning pads or a roller scrub off better than a dragged cloth.
- If you only vacuum, the mop’s build decides nothing.
Source: us.switch-bot.com · checked on 26 Sept
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 extends to the edges
When it matters
- Kitchens and hallways where dirt gathers along the kickboard.
- Homes with many corners and table legs.
- In open rooms the strip it leaves along the wall is small.
Source: us.switch-bot.com · checked on 10 Oct
The pad slides out along a wall or a kickboard, so the last few centimetres are mopped as well. On this model: Assumed, not a stated fact: the maker's full specification does not name it, so we take it as no.
- no (assumed)
- Automatic mop detach
51 of the 108 models we track have this.
When it matters
- Homes with carpets or rugs that should stay dry.
- High-pile rugs that no mop lift clears.
- Without carpets the mop can stay on.
Source: derived, no source of its own · checked on 3 Oct
The robot leaves the mop at the dock before it vacuums a carpet, so the carpet never gets wet.
- no
Dock 11 facts
- Empties the dust bin
When it matters
- Pets, sand or a large home, which fill the bin every run.
- Dust allergy, since you rarely touch the dust yourself.
- In a small home with little dust, emptying the bin by hand takes a moment.
Source: us.switch-bot.com · checked on 26 Sept
The dock empties the robot’s dust bin, usually after every run. You only empty the dock’s bag or bin.
- yes
- Bagless
When it matters
- Not wanting to buy bags again and again.
- Pets, whose hair fills a bag quickly.
- With a dust allergy a sealed bag keeps the dust in when you throw it away, so bagless is no gain.
Source: amazon.com · checked on 26 Sept
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
Source: amazon.com · checked on 26 Sept
How much the dust bag in the dock holds.
- 4 l
- Dust bag lasts
Among the models we track
up to 90 days on this model
Lowest
up to 30 days Highest
up to 180 days Middle
up to 70 daysHigher than 308 of the 454 models we track.
When it matters
- Pets or a lot of carpet, which fill a bag faster than the maker’s figure.
- Counting what bags cost in a year.
- With a bagless dock there is no bag to replace.
Source: us.switch-bot.com · checked on 26 Sept
How long the maker says a dust bag lasts with daily use. With pets or a lot of carpet it is shorter.
- up to 90 days
- Washes the mop
297 of the 378 models we track have this.
When it matters
- Mopping several times a week, when rinsing pads by hand gets tiresome.
- Kitchens and hallways, where a mop picks up a lot of dirt.
- If you rarely mop, washing the pads by hand is little work.
Source: us.switch-bot.com · checked on 26 Sept
The dock washes the mop for you, so you do not rinse it by hand.
- yes
- Dries the mop
When it matters
- Mopping often, since a damp mop in the dock starts to smell.
- Humid rooms, where a mop dries slowly.
- If you take the pads off and wash them yourself, you will not miss it.
Source: us.switch-bot.com · checked on 26 Sept
The dock dries the mop afterwards, so it does not sit there wet and start to smell.
- yes
- Hot-air drying
245 of the 295 models we track have this.
When it matters
- Mopping daily, when the mop barely dries before the next run.
- A smell from the dock in a warm or humid home.
- If you mop only now and then, cold air dries the mop in time.
Source: us.switch-bot.com · checked on 26 Sept
Drying is done with warm air instead of cold. It is faster and it helps against smell.
- yes
- Dispenses detergent
When it matters
- Kitchens and greasy floors, where water alone leaves a film.
- Not wanting to add cleaner by hand each time.
- Some floors, such as oiled wood, are best mopped with water only, so there it adds nothing.
Source: us.switch-bot.com · checked on 26 Sept
The dock mixes detergent into the water itself, from its own bottle.
- yes
- Plumbing hookup
61 of the 154 models we track have this.
When it matters
- Mopping every day, without filling and emptying tanks.
- A spot near a tap and a drain, such as a utility room or under a kitchen counter.
- If the dock stands far from any plumbing, it is no use.
Source: us.switch-bot.com · checked on 26 Sept
The dock can be connected to the tap and the drain, so you never fill or empty a tank. It does need a connection nearby.
- yes
- Clean water tank
When it matters
- Large hard floors mopped every day.
- Being away for days while the robot keeps mopping.
- With a dock connected to the tap the tank is filled for you.
Source: amazon.com · checked on 26 Sept
The clean water tank in the dock, which wets the mop.
- 2.7 l
- Dirty water tank
When it matters
- Mopping every day across a large hard floor.
- Kitchens, where the water gets dirty fast and smells if it stands.
- With a dock connected to the drain you never empty it.
Source: amazon.com · checked on 26 Sept
The tank that catches the dirty water from the mop. You empty this one yourself.
- 2.5 l
Navigation and obstacles 6 facts
- Navigation
When it matters
- Several rooms, where a map lets you send the robot to one of them.
- Cleaning in the dark, which lidar does and a camera alone does not.
- In one open room even simple navigation covers the floor.
Source: us.switch-bot.com · checked on 26 Sept
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 recognises more.
- LiDAR turret
- Obstacle avoidance
When it matters
- Cables, socks and toys left on the floor.
- Pets, whose accidents a robot should steer around.
- In a home that is tidied before each run it matters less.
Source: us.switch-bot.com · checked on 26 Sept
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
Among the models we track
20 mm on this model
Lowest
3 mm Highest
60 mm Middle
20 mmHigher than 348 of the 914 models we track.
When it matters
- Door sills and raised strips between rooms.
- Thick rugs whose edge the robot has to climb.
- In a flat home with no sills it decides nothing.
Source: us.switch-bot.com · checked on 26 Sept
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.
- 20 mm
- Climbing system for high thresholds
When it matters
- Door sills higher than most robots can take.
- Thick rugs and raised doorsteps between rooms.
- In a home without sills it decides nothing.
Source: us.switch-bot.com · checked on 10 Oct
An extending leg or wheel that carries the robot over a high threshold. Without one it usually stops at about 2 cm. On this model: Assumed, not a stated fact: the maker's full specification does not name it, so we take it as no.
- no (assumed)
- Camera on board
When it matters
- Privacy, if you would rather not have a camera driving through your home.
- Small things on the floor, which a camera sees better than lidar alone.
- If the floor is tidied before each run, a camera adds little.
Source: derived, no source of its own · checked on 2 Oct
Whether the robot has a camera, and what for: to recognise obstacles, or also to show you a live picture of your home in the app.
- obstacle camera
- Stair-edge sensors
When it matters
- Homes with stairs or a step down into a room.
- A landing or a split-level floor.
- In a home on one level with no drops it has nothing to guard.
Source: amazon.com · checked on 5 Oct
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
Among the models we track
11.5 cm on this model
Lowest
5.6 cm Highest
14.5 cm Middle
9.5 cmHigher than 987 of the 1002 models we track.
When it matters
- Sofas, beds and cabinets with little room underneath.
- Dust that gathers under furniture you never move.
- With furniture on high legs or flat on the floor it decides nothing.
Source: us.switch-bot.com · checked on 26 Sept
How tall the robot is. It decides whether it fits under your sofa, bed or cabinet.
- 11.5 cm
- Robot diameter
When it matters
- Dining chairs and tables with legs close together.
- Narrow gaps between furniture and walls.
- In a room with little furniture the robot’s width decides little.
Source: us.switch-bot.com · checked on 26 Sept
How wide the robot is. Narrower gets between chair legs more easily, wider usually means a bigger dust bin.
- 36.5 cm
- Robot weight
When it matters
- Carrying the robot up and down the stairs to clean another floor.
- A home on several floors with one robot for all of them.
- If it stays on one floor, its weight does not matter.
Source: us.switch-bot.com · checked on 26 Sept
What the robot weighs. It counts most if you carry it up a staircase every day.
- 5.5 kg
- Dust bin in the robot
When it matters
- A robot without an auto-empty dock, which you empty by hand.
- Pets and long hair, which fill a small bin within one run.
- With an auto-empty dock the bin is emptied after every run, so its size hardly matters.
Source: smarthomecompared.com · checked on 5 Oct
How much dust the robot holds before you empty it. It matters less with an auto-empty dock, which empties the bin after every run.
- 310 ml
Battery 3 facts
- Battery capacity
Source: us.switch-bot.com · checked on 26 Sept
The capacity of the battery. It hints at the runtime, but how much the robot draws counts just as much.
- 4,000 mAh
- Runtime per charge
Among the models we track
180 min on this model
Lowest
45 min Highest
360 min Middle
150 minHigher than 557 of the 989 models we track.
When it matters
- Large homes or several floors cleaned in one go.
- Carpet, where the robot uses more power.
- In a small home most robots finish well before the battery runs low.
Source: amazon.com · checked on 5 Oct
How long the robot cleans on one charge, at its quietest setting. After that it recharges and carries on where it stopped.
- 180 min
- Charging time
When it matters
- Large homes, where the robot recharges in the middle of a run.
- Running several times a day.
- If it runs once a day, it has hours to charge.
Source: smarthomecompared.com · checked on 5 Oct
How long an empty battery takes to charge fully in the dock.
- 4 h
Smart features and warranty 4 facts
- Matter
46 of the 47 models we track have this.
When it matters
- Running the robot alongside devices from other makers in one app.
- Not wanting to depend on the maker’s own app.
- If the maker’s app is all you use, it adds nothing.
Source: us.switch-bot.com · checked on 26 Sept
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
When it matters
- Starting the robot by voice while your hands are full.
- A home already run with Alexa, Google or Siri.
- If you start it from the app or a schedule, you will not miss it.
Source: us.switch-bot.com · checked on 26 Sept
Which voice assistants the robot works with, such as Google Assistant or Alexa.
- Alexa, Google Assistant, Apple Home
- Warranty
When it matters
- A robot with a dock full of pumps and moving parts, where more can break.
- An expensive robot you plan to keep for years.
- For a cheap robot you would replace rather than repair, the extra years count for less.
Source: us.switch-bot.com · checked on 26 Sept
The warranty the maker gives in Germany. Consumer law here stands apart from it and can last longer.
- 1 year
- Scheduled runs
When it matters
- Cleaning while you are at work or asleep.
- A fixed routine, such as the kitchen after every dinner.
- If you start it by hand each time, you will not miss it.
Source: us.switch-bot.com · checked on 5 Oct
You set days and times, and the robot starts by itself, also when you are not at home.
- yes
Sources: us.switch-bot.com · vacuumwars.com · amazon.com · smarthomecompared.com
Frequently asked questions about the SwitchBot S20
Does the SwitchBot S20 empty its own dust bin?
Yes. The station empties the robot’s dust bin after every run. The 4 l dust bag in the station lasts up to 90 days, the maker says.
Does the SwitchBot S20 wash and dry its own mop?
Yes. The station washes the mop itself. It then dries the mop with warm air.
Does the SwitchBot S20 work with Alexa, Google Home or Siri?
It works with Alexa, Google Assistant and Apple Home. It also supports Matter, so it fits into another brand’s app.
How high a threshold can the SwitchBot S20 climb?
Thresholds up to 20 mm, the maker says. Measure your own thresholds: the ones to a bathroom or balcony are often higher.
Does the SwitchBot S20 fit under low furniture?
The robot is 11.5 cm tall, so it fits under furniture with at least 12 cm of clearance.
Is the SwitchBot S20 suitable for pet hair?
Yes, the maker says. The brush guides hair to the side instead of winding it round the roller.
The maker
SwitchBot
- Reviews on Trustpilot
- Headquarters: China
- Founded in 2016
- Owned by OneRobotics, China
SwitchBot makes smart home devices and home robots, among them the S20 robot, which sweeps and mops. The brand belongs to OneRobotics (Shenzhen) Co., Ltd., a company incorporated in China whose results are published on the Hong Kong stock exchange. The SwitchBot trademark has been in use in the United States since 2016 and is registered to the group's subsidiary Woan Technology (Shenzhen) Co., Ltd.
