Windows are one of those surfaces that you can ignore for a surprisingly long time until the light is unfavorable or you suddenly realize how much “film” is actually collecting there – in our test, the Ecovacs WINBOT W3 OMNI will show whether it really does more than just “clean the window”. The window cleaning robot was only unveiled at CES 2026 in Las Vegas at the beginning of the year and is already available. We had it drive over typical glass surfaces, approached specific problem areas and took a close look at how much technology actually helps in everyday life and where users still need to take a closer look.
Technical data of the Ecovacs WINBOT W3 OMNI
| Model | Ecovacs WINBOT W3 OMNI |
|---|---|
| navigation | WIN-SLAM 5.0 |
| Operating mode | Mains operation or battery operation |
| Battery life | up to 70 minutes |
| Safety concept | 12-stage protection system |
| Negative pressure / adhesion (depending on communication) | up to 10,000 Pa, in some cases up to 8,000 Pa specified |
| Edge technology | TruEdge edge cleaning, edge proximity up to approx. 1.1 mm |
| Power failure protection | Emergency adhesion up to 30 minutes |
| Connection/fuse cable | 2-in-1 composite cable to the station, approx. 5.5 m |
| Tank on the robot | approx. 80 ml (tank for cleaning solution) |
| Fresh water tank (station) | approx. 1.3 l |
| Dirty water tank (station) | approx. 1.3 l |
| Window dimensions (max/min) | up to approx. 8.0 m × 2.5 m / from 30 cm x 40 cm |
| Base station | Station with pad wash function (“Vortex Wash”), approx. 10 kg |
| price | 699 Euro (RRP) |
Robot plus station, this is how the W3 OMNI arrives
In addition to the WINBOT itself, the box contains everything you need for operation. The robot, station, cable, pads and cleaning fluid are put together so that you can get started straight away after unpacking.
The Ecovacs WINBOT W3 OMNI is supplied with:
- WINBOT W3 OMNI
- Base station
- Power cable for the station
- Combined connection and safety cable (robot ↔ station)
- 2 mop pads
- 230 ml cleaning fluid
- Quick guide and manual
First impression: structure, workmanship, operating logic
Set-up is quick: place the station, connect the power supply, fill with cleaning fluid and fresh water, attach the pad – after a few minutes, the W3 OMNI is ready for use.
What you hold in your hands makes a very solid impression. The pad system can be easily removed and reattached without the feeling of damaging anything with every movement. The station is also stable and looks robust – visually, it is more purpose-oriented than design-conscious, which is the right balance for a device that is regularly assembled and disassembled. It is somewhat reminiscent of a miniature front-loading washing machine.
It takes a short time to get used to using it, but not long. The display guides you through the start process in a structured manner and always shows what is coming up next, meaning there is no guesswork. If you prefer to keep control via the app, you can map the same steps there and also change modes or call up status messages. For routine operation, however, the device control alone is often sufficient and the procedure is quickly understood.
Technology: What the W3 does differently to classic window robots
With window robots, it’s often the details that make the difference. Not because the basic idea is complicated, but because the typical weak points run through the entire category: Edge areas that are left out, vacuum breaks, streaks, inexplicable stops, too much or too little water. Ecovacs addresses this with the W3 OMNI with three technical focuses, namely navigation via WIN-SLAM 5.0, edge processing via TruEdge and the interaction of spraying, wiping and pad care via the station.
The basic principle is familiar. The robot adheres to the surface using negative pressure, follows structured paths, dispenses cleaning agents in a targeted manner and wipes with the pad. The difference lies in the surrounding area, specifically in the station, which can wash the pad in between so that it doesn’t just get dirtier and dirtier. How much this helps in practice depends on how dirty the windows are, but not having to wring them out manually after every window is a gain.
The edge logic is particularly important here. Many appliances work solidly on the surface but leave visible streaks on the frame, and this is exactly where TruEdge comes in. In the test, the edge function proved to be one of the most noticeable differences to older solutions, which are often more reserved at the edge than consistently clean.
Setup and app
The app fulfills its purpose. As already mentioned, it is particularly useful if you want to change modes, keep an eye on the status or have a little more control over special surfaces. At the same time, the system is not designed to be permanently attached to the smartphone. Once you get into the routine, you can do a lot of things directly on the device and quickly realize that the process almost runs itself after a few uses.
The remote control is not a feature that you absolutely need, but one that you will appreciate from time to time. Especially if you want to target a specific area or want to test how the robot reacts on an unfamiliar surface, it may be more practical than starting the complete automatic run straight away.
Pad system and station: how it really works
At this point, it is worth making a brief clarification, because the concept is easily misunderstood. Yes, the base station can wash pads. But the process is manual. You take the pad off the robot, place it in the station’s washing holder and after the washing process you have a pad that can be used again.
What happens inside is technically well thought out. According to the manufacturer, 16 high-pressure nozzles work at 20 kPa, four discs rotate through the fibers at 200 revolutions per minute, and a precision scraper then removes the dirty water, leaving behind exactly the right amount of residual moisture that the pad needs for the next use. There are two modes to choose from: the standard wash does this in one minute, the full wash takes around one and a half minutes and works more thoroughly. If you also want to keep the station itself clean afterwards, you can start an optional self-cleaning function.
This has two specific advantages: On the one hand, there is no need for the classic wringing out under running water, a real difference especially if you are working on several surfaces in succession. On the other hand, it is still a system where you have to do it yourself.
Anyone expecting a window robot to manage completely without intervention at this stage will probably be disappointed. Although the W3 OMNI significantly reduces the effort involved, it does not make it superfluous.
Ecovac’s WINBOT W3 OMNI in a practical test: windows, mirrors, doors and problem areas
For the test, we not only ran the W3 OMNI on a standard window pane, but also on several surfaces where window robots like to show their peculiarities: normal window surfaces, large mirrors, smooth doors, tiled areas with joints and a pane with a statically adhering privacy film, which we deliberately only tested under supervision.
On normal windows, it quickly becomes clear how the robot works. It moves in a structured manner, stays in the pattern, corrects itself at edges and works the surface in a comprehensible manner. At the same time, it becomes clear that the result is not completely streak-free in every situation. The window is clean, but if you take a closer look after the pass, you will occasionally find fine traces here and there – especially at the point where the robot stops after the pass.
The W3 OMNI works most stably on large mirrors because the surface is smooth and homogeneous and it has to make fewer “decisions” than with changing materials. It runs in a structured manner here, follows the edges in a comprehensible manner and covers the surface cleanly. Nevertheless, there was a typical weak point: A small area in the top corner remained visibly unclean, even after we had sent it over the surface again several times. For a really clean finish, this corner had to be wiped by hand – the rest of the mirror, on the other hand, was convincingly neat.
Smooth doors also work in principle, but with one limitation that you should be aware of. There were repeated dropouts at the height of hinges because the W3 OMNI sometimes misinterprets the geometry there and reacts with an air pressure message. This can be managed with a small temporary barrier, but if you want to clean doors regularly, you should plan for this workaround from the outset.
With tiles, it all depends on the joint structure. The robot masters large tiles with thin joints much better than small-format tiles with many and deep joints. This is understandable, because many joints mean many minimal edges, potential air channels and overall less stable conditions for negative pressure and movement. If you want to use the system on highly structured surfaces, you should adjust your expectations accordingly.
Finally, the experiment with the statically adhesive privacy film was interesting. The robot drove over it and held without the film and device coming off together. However, as films differ greatly in terms of adhesion, ageing and edge behavior, we would not formulate this as a general recommendation, and in this case we deliberately did not leave the run unattended.
Cleaning result: what is convincing – and what you have to accept
If you start from the point of view of “windows need cleaning”, you will be satisfied with the result in most cases. The W3 OMNI removes dirt film, reduces visible stains and ensures that glass surfaces look much clearer again. For us, this is the core performance of a window robot: not laboratory perfection, but a noticeable improvement without the traditional effort.
However, there is one point you should be realistic about: Freedom from streaks is not guaranteed in every situation. How clean the result looks in the end depends on the degree of soiling, the light angle and whether a surface is run once or twice. Certain coatings also react more sensitively than others. This does not fundamentally detract from the overall picture, but is part of the complete classification.
In the case of windows directly on a busy road, it has also been shown that a single pass is not always sufficient, depending on the condition of the pane. A second pass visibly improves the result, but costs time. It is precisely in such situations that the station concept pays off, because the pad can be refreshed in between without having to wash it out by hand.
Cable, handling and safety of the Ecovac WINBOT W3 OMNI in the test
With the W3 OMNI, safety is not only in the concept, but also in the small details. The combined connection and safety cable runs smoothly during use and can then be retracted again really smoothly at the touch of a button, which seems so natural after a few uses that you don’t even think about it anymore.
At the concept level, Ecovacs relies on several levels. The main cable is designed for pulling forces of up to 100 kg, the station attaches itself to the floor using a suction cup and, at 10 kg, has enough weight of its own to hold the robot in an emergency. It also features vacuum monitoring and automatic pressure equalization.
Ecovacs also advertises a power failure protection that is supposed to keep the robot on the window for up to 30 minutes, although this was difficult to verify in the test. As the W3 OMNI has a rechargeable battery anyway, it simply continues to run in the event of a power failure, and a real complete failure in normal operation is probably more of a theoretical nature. Overall, the safety concept did not show any weaknesses in the test, even if the robot should not be left completely unattended, especially in special areas.
For whom is the W3 OMNI worthwhile, and what are the alternatives?
At 699 euros, the W3 OMNI is not an impulse buy, and it doesn’t want to be. The set makes the most sense if you regularly clean large glass surfaces, i.e. floor-to-ceiling windows, conservatories, large mirrors or hard-to-reach exterior windows. If you have two standard windows in an old building, you are buying far more equipment than necessary.
However, if you do fall into this category, the W3 OMNI is currently the most sophisticated system on the market. The station concept with pad cleaning is new in this form and makes the difference particularly noticeable if you want to clean several areas in one pass.
If you want to spend a little less, you will find what you are looking for in Ecovacs’ own portfolio. The WINBOT W2S OMNI is available for around 530 euros and also delivers very good results with TruEdge technology, but does without the pad washing function of the station. If you want to save a little more, take a look at the W2 PRO OMNI, which offers a very similar cleaning performance for around 430 euros, but comes without an integrated storage solution.
Outside of the Ecovacs universe, the Dreame C1 with station is the most interesting alternative, which is currently available for around 470 euros. It also relies on a station solution and has impressed with solid results in tests, even if the overall concept does not quite reach the level of maturity of the W3 OMNI. If you’re looking for an uncomplicated entry-level model without all the fuss, you’ll find reasonable devices in the Hobot line starting at around 280 euros, which do not require a station and work well for occasional use on normal window surfaces.
Conclusion of our test: The Ecovacs WINBOT W3 OMNI is the most sophisticated system in its class to date
In our test, the Ecovacs WINBOT W3 OMNI shows quite clearly where window robots are heading: away from pure window cleaning and towards a system that combines navigation, edge work and pad care. On large glass surfaces, hard-to-reach panes and mirror-like surfaces, the setup really makes sense, especially if you want to clean such surfaces more than just once a year.
What you should keep in mind: Handles remain, freedom from streaks is not a guarantee, and 699 euros is an announcement. But if you take all this into account, you get a concept that is currently one of the most well thought-out in its category that we have had in our hands. Not perfect, but close to what is possible today.
The bottom line: the set is simply oversized for two standard windows in an old building. For everyone else who knows why they are getting a window robot, there is hardly anything more sophisticated at the moment.
- Strong system concept consisting of robot and station
- Structured navigation and convincing edge function
- Good results on large glass surfaces and mirrors
- Station makes pad care much easier (even if the step remains manual)
- Not consistently streak-free, depending on the surface and situation
- Special points such as hinges can provoke underpressure messages
- Small tiles with many joints are less suitable for the system
- Quickly oversized for small window set-ups
Ecovacs WINBOT W3 OMNI
Design & processing
Ease of use
Cleaning performance
Equipment
Price-performance ratio
94/100
The W3 OMNI is currently the most sophisticated system in its class: great on large surfaces, honest in its limitations, and with a station solution that makes everyday life noticeably easier. A clear recommendation for the right target group.
