C1
4 tests of the C1 Station bundle · C1 power setup untestedRead the findings →Dreame's square window-cleaning robot sold without its battery station, so it runs from a plug. It's good on large, regularly cleaned panes and reaches well into the edges. It's loud, and needs a socket near every window.
See the alternatives below, or switch market.
Where it sits in Dreame’s range
- C1This model
- C1 Station SLater Station variant listed on Dreame's support site
- C1 StationSame robot with a carry-around battery station
Feedback
What reviewers found
Every test we found used the C1 Station bundle, which carries this same robot. testen-mit-kopf.de was the most impressed, with glass left largely free of streaks and better corners than most rivals. Vonguru and TechRadar Netherlands found it very good on regularly cleaned windows but beaten by stubborn marks such as glue. heise bestenlisten rated the cleaning solid, level with an Ecovacs rival, but saw a slight smeary film, a shrill whine and stalls on low frames. None of the reviews we use tried the plug-in C1 by itself.
testen-mit-kopf.de, hands-on, Apr 2026 (tested on the Dreame C1 Station) · heise bestenlisten, hands-on, Mar 2026 (tested on the Dreame C1 Station; Test unit supplied by Dreame) · TechRadar Netherlands, hands-on (tested on the Dreame C1 Station) · Vonguru, hands-on, Dec 2025 (tested on the Dreame C1 Station)
Cleaning result
Mixed resultsGood on glass you clean often. testen-mit-kopf.de found it largely streak-free with better corners than most rivals, and Vonguru saw no marks on regularly cleaned windows. heise bestenlisten saw a slight smeary film, and TechRadar Netherlands found glue residue never came off.
Safety
Not enough evidenceReviewers tested the C1 Station, whose fall-prevention lock and floor anchor the plain C1 lacks the specifications, so nobody has judged the C1's own fall safety yet. On the Station, heise bestenlisten saw the robot overrun frameless edges and stop until rescued.
Surfaces it suits
Mixed resultstesten-mit-kopf.de found its sensors reliably spotted frameless edges and it handled tiles and mirrors, but it got stuck on a pane 27.5cm tall. heise bestenlisten saw it overrun frameless edges, and TechRadar Netherlands found floor-length windows confused it.
Ease of use
Not enough evidenceReviewers tested the C1 Station, which adds a battery and cable reel, so nobody has judged day-to-day use of the plug-in C1 yet. On the shared app, testen-mit-kopf.de found it clear but heise bestenlisten found it cluttered.
Noise
Mixed resultsheise bestenlisten measured close to 70dB, with a shrill whine that made staying in the room unpleasant. Vonguru found the noise about average, like a vacuum cleaner on a moderate setting, though still not one to run while children sleep.
Value
Not enough evidenceReviewers judged the price of the C1 Station, which costs more and adds a battery station, so nobody has weighed up the plain C1 at its own price yet. heise bestenlisten found the Station bundle expensive next to an Ecovacs rival.
Verdicts come from independent, hands-on, finished reviews. An area needs at least two of them before we say more than “Not enough evidence”. We don't score robots ourselves. How this works
Good on glass you clean often
TechRadar Netherlands got neat, often streak-free results on windows that weren't too dirty, but glue residue stayed put however many passes it made. Vonguru found regularly cleaned bay windows came out clean with no visible marks, while very dirty glass sometimes needed a second run or a cloth. heise bestenlisten saw visibly cleaner glass but not a streak-free finish, with a slight smeary film in places. Treat it as a way to keep windows clean, not to rescue neglected ones.
The corner brushes help
The C1 has a brush on each side. testen-mit-kopf.de found this gave noticeably better results at edges and corners than many window robots, though a tiny border could remain. heise bestenlisten agreed the brushes reach the very edge of the glass, and found them more effective than the fixed scrubbers on Ecovacs rivals. It warned that the bristles are fairly hard and could leave fine scratches on delicate glass or coatings, so check that Dreame and your glass maker allow a brush robot on that coating.
Loud, with a high whine
Dreame quotes 63dB(A), measured with the robot running free. heise bestenlisten put it at close to 70dB(A) in use, with a high, shrill whistle from the suction unit that made it unpleasant to stay in the same room. Vonguru thought the noise was about average, like a vacuum cleaner on a moderate setting, but still not something to run in the evening while children sleep. So it's a poor pick for cleaning while someone's working or asleep nearby. Dreame's safety instructions require supervision during use, per Dreame.
Frameless, small and odd-shaped panes
testen-mit-kopf.de found its four drop sensors reliably spotted where frameless glass ended. heise bestenlisten had a different experience: on frameless or low-framed windows it sometimes ran past the edge, lost suction and stopped with an error, needing rescue by hand, though it never fell. testen-mit-kopf.de also had it get stuck on a pane only 27.5cm tall, below Dreame's minimum, and found rounded corners could break its grip. TechRadar Netherlands saw floor-length windows confuse it now and then.
What the station adds
Dreame lists the same suction, spray, modes and noise for both versions. The Station adds a battery rated at about 180 minutes, a fall-prevention lock and a suction cup that anchors it to the floor, none of which the plain C1 has. It also means heise bestenlisten's complaints about the station, a fiddly slot for the robot and a flap that came apart, don't apply here. In exchange, the C1 needs a socket near every window.
All four reviews tested the C1 Station, which pairs this robot with a battery station. Their cleaning, noise and navigation findings apply to the C1; anything about the battery, weight or cable winder doesn't. heise's test unit came from Dreame. TechRadar's review is from its Dutch edition, heise's and testen-mit-kopf's are in German, and Vonguru's is in French.
Our take
Should you buy the C1?
Best for: Large windows cleaned regularly, with a socket nearby. Skip it if: You need it to clean quietly while you work or rest nearby.
The C1 is worth considering for large, regularly cleaned panes with sockets nearby, if you want the Station bundle's robot without carrying its power station. All four tests used that bundle, so standalone power and tether setup remain untested. Expect noise and manual pad washing. The C1 Station adds portable cleaning power; the WINBOT W3 Omni adds pad washing but also has a dock and water tanks to maintain.
The C1 is the robot from Dreame's C1 Station bundle, sold without the station. It sucks itself onto the glass, sprays from both sides ahead of a microfibre pad, and has small brushes on all four sides meant to reach right into the frame. You pick one of five cleaning modes with the app or the button, and it works its way down the pane on its own.
What you give up is the station's battery, its fall-prevention lock and the cable winder. So the C1 needs a socket within reach of each window, but you're carrying 1.6kg rather than a 7.6kg kit. Every test we found used the Station bundle, so the cleaning results carry over while nobody has tried the plug-in C1 by itself. It still won't take panes smaller than 30 by 40cm, and you move it between windows and finish off the corners.
If you want to clean windows far from a socket, the C1 Station is the version to look at.
Before you buy
The questions people ask about this one
Does it work on frameless glass?
Dreame says its sensors spot edges within 0.02 seconds, per the specifications. testen-mit-kopf.de found it reliably detected where frameless glass ended. heise bestenlisten had it overrun frameless and low-framed edges now and then, then stop with an error until rescued, although it never fell. Supervise every run and follow the tether instructions, per Dreame.
Does it leave streaks or edges?
On regularly cleaned glass, testen-mit-kopf.de found it largely streak-free and Vonguru saw no visible marks. heise bestenlisten found a slight smeary film and suggested wiping dry by hand for a perfect finish. Its corner brushes reach closer to the frame than many rivals, though a thin border can remain.
Can it clean small windows?
Dreame says panes must be at least 30 by 40cm, per the specifications. testen-mit-kopf.de tried a pane 27.5cm tall: the C1 managed one pass, then got stuck and had to be freed with the remote control. For small or divided panes, a compact robot is a better fit.
Can it do outside windows on an upper floor?
Only where the pane and the setup meet Dreame's instructions. Its safety guidance requires a secure indoor tether anchor, suitable weather and supervision, per Dreame. The cord's claimed 140kg strength isn't a guarantee against a fall. All four reviews used the Station bundle, and none checked how the standalone C1 is powered and tethered outside.
Does it need a special cleaning fluid?
Dreame supplies a 230ml bottle of its own cleaning solution. None of the reviews shows whether other household cleaners are suitable, so follow the model's fluid and dilution instructions. testen-mit-kopf.de used the solution undiluted, but that was its test setup, not approval for other products.
Alternatives
Other window-cleaning robots to compare.
C1 Station
Why consider it: The same robot with a battery station, so you don't need a socket by every window.
The compromise: The whole kit weighs 7.6kg, and it's just as loud.
WINBOT W2S OMNI
Why consider it: Its battery station frees it from the socket, and three tests found it cleans everyday dirt well and gets closer to the edges than most.
The compromise: Corners still aren't perfect, and you move it between panes and wash the pad yourself.
S7 Pro
Why consider it: Also mains-powered, with two pads that scrub, and TechRadar found it spot on at detecting frameless edges.
The compromise: Both of its reviewers saw streaks on dirtier glass.
Specs
Full specifications
Each specification names its source. Manufacturer claims are not independent test results; unconfirmed figures are labelled.
Owner reviews
Do you own the C1?
Tell people how it’s held up: cleaning, maintenance, faults and support. Owner accounts are shown separately from independent reviews.
Sources
Where this page’s findings come from
Editorial reviews
- testen-mit-kopf.de: Dreame C1 Station window robot test (German) ↗93.51 %Hands-on · Tested on the Dreame C1 Station
- heise bestenlisten: Dreame C1 window robot test (German) ↗Hands-on · Tested on the Dreame C1 Station · Test unit supplied by Dreame
- TechRadar Netherlands: Dreame C1 Station review (Dutch) ↗Value 3.5 / 5, design 4 / 5, set-up and app 3.5 / 5, cleaning 4 / 5Hands-on · Tested on the Dreame C1 Station
- Vonguru: Dreame C1 Station window robot test (French) ↗Hands-on · Tested on the Dreame C1 Station
Sources
Videos
- Search YouTube for Dreame C1 ↗Search results may include company demonstrations or similar models. Check the source and model name; a demonstration is not an independent performance test.