ECOVACS WINBOT W2S PRO review: 10,000 Pa suction, TruEdge 2.0 corners and seven cleaning modes in a corded robot
The ECOVACS WINBOT W2S PRO Window Cleaning Robot gives you ECOVACS’s top cleaning hardware without the station: 10,000 Pa suction, TruEdge 2.0 edge brushes, a triple-nozzle spray on each side and seven cleaning modes. It cleaned closer to the frames than almost anything I have tested, but it needs an outlet nearby, you manage the cable and safety rope yourself, and it is heavier to hold than the compact robots.
Emily Carter
Hands-on review
Hands-on testing, research, specs
4 weeks
20 minutes
Jargon helpNew to window robots? Tap any dotted term to see what it means.
In this review
Yes, if your windows are within reach of an outlet and you want the cleanest edges without paying for a station. The WINBOT W2S PRO grips hard, cleans right into the frame and gives you more modes than you will ever need. The power cord limits where you can use it, you handle the cable and rope yourself, and if your windows are far from sockets, the Omni version is the better buy.
WINBOT W2S PRO at a glance
WINBOT W2S PRO pros and cons
- TruEdge 2.0 brushes clean right into frames and corners
- 10,000 Pa suction holds firmly on any smooth glass
- Seven modes plus a manual joystick in the app
- Needs an outlet within cable reach
- Cable and safety rope to manage yourself
- No carry station for storage or transport
Who should buy the WINBOT W2S PRO?
- Large windows and sliding doors near outlets
- Anyone who notices dirty frame lines
- Tinkerers who like choosing modes and steering
- Balconies or windows far from sockets
- People who want everything in one carry case
- A few small windows that are easy to reach
First impressions of the ECOVACS WINBOT W2S PRO
The ECOVACS WINBOT W2S PRO is the same cleaning robot ECOVACS puts in its Omni kit, sold on its own with a power cord instead of a battery station.
Out of the box, that makes it a simpler package: the robot, a power supply, a safety rope with a carabiner, a spare pad and a bottle of cleaning solution.
The robot is a substantial white square. It feels solid in the hand, a little heavier than I expected, with a big power button on top and a fill opening for the solution.
My first window was our patio slider from the inside, three steps from an outlet.
I plugged it in, filled the reservoir, fitted a damp pad, clipped the rope to a sturdy table leg and held the power button.
A voice talked me through it, the fan spun up and the robot locked onto the glass harder than any robot I had tested before.
It found the edges, worked across in neat lines and slowed at the frames while four little brushes swept the gap.
When it finished, the frame line was clean along all four sides. That was the moment I understood what this robot is for.
Over four weeks I used it on every window within cable reach, inside and out.
My first run: the patio slider from inside, a few steps from the outlet.
What the WINBOT W2S PRO actually is
The W2S PRO is a square, suction✕Suction (Pa)How hard the fan pulls the robot against the glass, measured in pascals. More pascals means a firmer grip, which matters most on outside windows and big panes.-based window robot that runs on mains power.
It sprays cleaning solution from triple nozzles on each side, wipes with a wide microfiber pad and plans its route with WIN-SLAM✕WIN-SLAM navigationECOVACS name for the robot mapping system. It measures the window first, then plans a tidy back-and-forth route instead of wandering. 4.0.
Its headline features are the ones that matter most on real windows: grip and edges.
The W2S PRO versus the W2S PRO Omni
The robot is the same. The difference is power and storage.
| Feature | W2S PRO (tested) | W2S PRO Omni |
|---|---|---|
| Power | Power cord, with backup battery | Battery station or plugged in |
| Where you can use it | Within reach of an outlet | Anywhere, up to 110 minutes |
| Storage | Robot, cable and rope separately | Everything in one carry case |
| Station display | No | Yes |
| Cleaning hardware | Same robot | Same robot |
| Best for | Windows near outlets | Windows far from outlets |
If all your windows are near sockets, the W2S PRO gives you the same cleaning for less complexity.
WINBOT W2S PRO design and setup
The square body is the key design choice.
Round robots leave curved, uncleaned patches in every corner of a rectangular window. A square robot fits the shape of the glass.
The pad covers almost the whole underside, so a lot of glass is touched on every pass.
Bumpers around the edge protect the robot and the frame, and the top has a single power button and an easy-fill solution opening.
Setting up for a clean
| Step | What I do | Why |
|---|---|---|
| 1. Power | Plug the robot in near the window | It runs on mains power |
| 2. Fill | Top up the reservoir through the top opening | The spray needs solution |
| 3. Pad | Wet, wring out well, fit securely | A loose or soggy pad streaks |
| 4. Rope | Clip the carabiner, anchor the rope | Essential on outside glass |
| 5. Attach | Hold power, place on glass | Voice confirms it is secure |
| 6. Mode | Pick a mode in the app if needed | Default works for most glass |
First setup, including the ECOVACS HOME app and a firmware update, took about 15 minutes.
Our tip: Plan your outlet before you plan your window. Check the cord reaches the far corner of the glass with slack to spare, or the robot will stop short.
Suction and safety
At 10,000 Pa, the W2S PRO has the strongest suction in the ECOVACS range, and you can feel it.
It locked onto every window I tried, including dusty outside glass, and never slipped once in four weeks.
ECOVACS describes a 10-stage protection system: six hardware fall-protection measures and three intelligent safeguards, plus the rope.
Bars show the order in which each layer acts, not strength.
If the power is cut
Because it runs on a cord, the backup battery✕Backup batteryA small battery inside the robot that keeps the suction fan running if the power is cut, so the robot stays stuck to the glass while it beeps for help. matters. If the plug is pulled or the power fails, it keeps the fan running for about 30 minutes so the robot stays on the glass and alerts you.
I tested this by unplugging it mid-run. It held on and beeped until I came back.
The spray system and cleaning pads
Triple nozzles on each side spray a fine mist ahead of the pad, whichever way the robot is moving.
That means the glass is always damp before it is wiped, which loosens dust, pollen, water spots and pet marks.
Compared with robots that spray from one or two nozzles, the coverage is wider and more even.
The reservoir holds 4.1 oz, so I rarely refilled it mid-session.
Pads
The large pad covers most of the underside, and a spare is included.
The spare is genuinely useful. After two or three dirty windows, a pad starts to spread grime instead of lifting it, and swapping takes seconds.
My ratings on similar glass, out of 10.
Our tip: Swap to the spare pad before the last windows of a session. The final panes look as good as the first.
TruEdge 2.0: cleaning right up to the frame
This is the W2S PRO’s best trick.
TruEdge✕TruEdgeECOVACS edge-cleaning system. Small spinning brushes reach into the strip of glass next to the frame that a flat pad cannot touch. 2.0 uses four edge brushes with dense felt bristles that sweep along the frame as the robot passes.
Together with the square body and bumpers, they let the robot clean the narrow strip next to the frame that most robots skip.
On our windows, frame lines were clean on all four sides after a normal run, and Edge mode tidied up anything left.
My cleaning ratings by part of the window, out of 10.
The tips of a few corners still had a trace of dust, but much less than I am used to from window robots.
Our tip: Wash the edge brushes every few sessions. They collect dust from the frames quickly, and clean brushes are what keep the edges sharp.
Seven cleaning modes and manual control
The W2S PRO has more modes than any robot I tested, all selected in the ECOVACS HOME app.
| Mode | What it does | When I used it |
|---|---|---|
| Fast | Quick pass for light dust | Inside windows cleaned recently |
| Thorough | Full, careful coverage | My everyday default |
| Deep | More intensive pass | Windows left for a while |
| Heavy-Duty | Most intensive | Outside glass after rain or pollen |
| Edge | Concentrates on the perimeter | Finishing doors and big panes |
| Spot | Focuses on one mark | Pet nose prints |
| Zone | Cleans one area of the window | Handle-height fingerprints |
Relative time per window from my test.
The joystick
The app also has a joystick-style manual control.
I used it to drive the robot to a single mark on a big window instead of running a whole cycle. It is responsive and easy to use.
Most of the time, though, Thorough plus an Edge pass was all I needed.
The ECOVACS HOME app
Without a station display, the app is where you do most of the choosing.
Setup was quick: add the robot, connect over Bluetooth, name it and run the firmware update.
After that, the main screen shows the robot’s status and a row of modes. Pick one, and the robot starts once it is attached.
The joystick screen is simple and responsive, with arrows to move the robot in any direction.
You do not need the app for a basic clean. Holding the power button starts the robot in its default mode, which is handy when your phone is in the other room.
| App feature | What it does | How often I used it |
|---|---|---|
| Mode selection | Choose from seven modes | Most sessions |
| Joystick | Drive the robot by hand | A few times a week |
| Status | See what the robot is doing | Now and then |
| Firmware updates | Install improvements | Once, at setup |
How well the WINBOT W2S PRO cleans
Cleaning was excellent and consistent.
Inside glass with dust, fingerprints and the cat’s nose prints came out streak-free after Thorough.
Outside glass with pollen and water spots cleared with Heavy-Duty, and only the dirtiest street-side window needed a second pass.
My ratings on a 10-point scale with the recommended solution.
ECOVACS rates its cleaning speed at about 5.5 inches per second, and it moved at a steady, unhurried pace that covered a big slider in a reasonable time.
The outside of the patio slider, done from the patio with the cord running inside.
Living with the power cord
The cord is the W2S PRO’s main compromise, so I paid close attention to it.
Indoors, near an outlet, it was a non-issue. I plugged in, cleaned and unplugged.
For outside windows, I ran the cord through a slightly open window or door, which worked but took more thought.
For our balcony, with no outlet nearby, it was impractical without an extension cord.
| Situation | How it went | My verdict |
|---|---|---|
| Inside glass near an outlet | Plug in and go | Excellent |
| Outside of ground-floor doors | Cord through a gap in the door | Good |
| Upstairs outside windows | Cord and rope through the window | Good, with care |
| Balcony with no outlet | Needed an extension cord | Fair |
If many of your windows are far from sockets, the battery-powered W2S PRO Omni is worth the step up.
Our tip: Keep the cord and rope on opposite sides of the robot’s path. When they cross, they can tangle and pull the robot off its route.
Outside windows
Outside glass is where strong suction and good edges matter most, and the W2S PRO was very good at it.
With 10,000 Pa of grip, I never worried about it on our ground-floor doors, and with the rope well anchored I was comfortable using it on upstairs windows too.
Pollen, dust and dried rain spots came off in Heavy-Duty mode. Bird droppings were the one thing I removed by hand first.
How many passes my outside windows needed.
Avoid hot, direct sun. The mist dries too fast and can leave streaks. An overcast morning gave me the best finish.
Which windows and surfaces it suits
The W2S PRO is happiest on large, flat, rectangular glass, which is where its square body and edge brushes pay off most.
I also tried it on a few surfaces beyond ordinary windows.
Sliding doors and picture windows
These were perfect. Big, flat panes let it plan long, efficient stripes, and the frames gave TruEdge 2.0 something to work along.
Bathroom mirror
Our large bathroom mirror was easy. Fast mode cleared toothpaste spots and fingerprints, and the robot detected the mirror’s edge without trouble.
Frameless shower glass
On frameless glass✕Frameless glassGlass with no raised frame around it, such as a shower screen, a mirror or a glass balcony rail. The robot must detect the drop-off with sensors instead of bumping into a frame., the robot relies on its sensors rather than a frame. It found the edge and cleaned up to it.
Soap film came off well over two runs. Heavy limescale needed a scrub by hand first.
| Surface | How it went | My verdict |
|---|---|---|
| Sliding doors | Fast, even, clean frame lines | Excellent |
| Large picture windows | Efficient stripes, sharp edges | Excellent |
| Mirrors | Quick, streak-free | Very good |
| Frameless shower glass | Good on film, scale needs prep | Good |
| Small windows | Works, but setup takes longer than the job | Good |
| Arched or odd shapes | Square body misses parts | Fair |
Our tip: Descale shower glass by hand before the robot’s first run. After that, weekly Fast runs keep soap film from building up again.
What using it is really like
A typical session took about three minutes to prepare and two to pack away.
Packing away is the part that differs from the Omni. You coil the cord, the rope and the robot separately, and store the bottle somewhere else.
I kept everything in a small plastic tub with a lid, which worked fine.
The robot is heavier to hold than compact models, so I used both hands to place and remove it on high glass.
The fan noise is a steady whoosh, fine to work alongside in the same room.
The living room slider: near an outlet, it is the perfect window for this robot.
Planning a whole-house cleaning day
With a corded robot, a big cleaning day is about outlets, not batteries. Here is how I planned mine.
First, I walked through the house and noted which outlet would serve each window, and where I would need an extension cord.
Then I grouped windows by outlet, so I could plug in once and clean two or three panes before moving.
Inside glass came first, upstairs to downstairs. Outside glass came after lunch, shady side first.
| Group | Windows | Plan |
|---|---|---|
| Living room outlet | Two sliders and a picture window | Thorough, then Edge on the sliders |
| Kitchen outlet | Kitchen window and patio door | Spot-clean grease first, then Thorough |
| Bedroom outlet | Two upstairs windows, inside and out | Rope to a radiator pipe, Heavy-Duty outside |
| Extension cord | Balcony door | Cord taped down along the floor |
The whole day took about 40 minutes of my own time: plugging in, fitting pads, anchoring the rope and lifting the robot on and off.
The robot did several hours of cleaning in that time, and every frame line came out clean.
Our tip: Map your outlets once and keep the list on your phone. Every future cleaning day then takes half the planning.
Robot versus cleaning by hand
I tested the W2S PRO against my usual cloth and squeegee on identical doors.
By hand, I was quicker on the first door. By the third, I was slower, my edges were worse and my arms were tired.
| Task | By hand | W2S PRO |
|---|---|---|
| One small window | Faster | Slower, because of setup |
| Three or more windows | Tiring and uneven | Consistent every time |
| Edges and frame lines | Precise if careful | Clean, thanks to TruEdge 2.0 |
| Upstairs outside glass | Ladder or stretching | From inside, roped |
| Your effort | All of it | Setup, cord and pad rinsing |
The robot is not about speed on one window. It is about doing every window properly without the effort.
How to get the best results
A few habits made a clear difference in my test.
- Wring the pad until it is damp, not wet. Drips are the main cause of streaks.
- Use Thorough as your default and save Heavy-Duty for outside glass.
- Finish doors and big panes with Edge mode.
- Swap to the spare pad before the last windows.
- Spot-clean bird droppings and paint flecks by hand first.
- Clean outside glass in shade or on overcast days.
- Keep the cord and rope apart so they do not tangle.
My judgment of how much each habit improved the final look of the glass.
Cleaning and maintaining it
| When | Task | Why it matters |
|---|---|---|
| After each session | Rinse and dry the pad | A dirty pad spreads grime |
| Every few sessions | Wash the edge brushes | Keeps edges sharp |
| After outside windows | Wipe the sensors and bumpers | Accurate edge detection |
| Each refill | Use the recommended solution | Avoids foam and clogged nozzles |
| Before high windows | Check the rope and carabiner | Your safety backup |
After four weeks, grip, route and edge cleaning were exactly as on day one.
Supplies, storage and long-term ownership
Ongoing supplies are pads and cleaning solution, the same as any window robot.
The washable pads last well if you rinse them after each session and let them dry fully. With the spare in rotation, I always had a dry one ready.
The 4.1 oz reservoir means fewer refills, and the fine mist uses solution sparingly.
ECOVACS recommends its own solution. Some household cleaners foam or leave residue that can clog the nozzles, so I stuck with it.
Storage without a station
This is the one area where the W2S PRO is clearly less convenient than the Omni version.
You have a robot, a power supply, a cord, a safety rope✕Safety tetherA strong cord that clips the robot to something solid indoors. If the robot ever lets go of the glass, the tether catches it before it can fall., a bottle and spare pads, and nothing to keep them together.
I solved it with a lidded plastic tub on the floor of the hall closet. Everything went in after each session, and nothing got lost.
Why it should last
The build feels solid, and after four weeks of regular use, inside and out, nothing had changed in grip, route or edge cleaning.
The parts that wear, pads and edge brushes, are designed to be replaced, so you are not throwing away the robot when they tire.
Noise, pets and family life
The fan noise is a steady whoosh, about as loud as a hair dryer on low.
In the same room it is obvious but not unpleasant. In the next room, with the door half closed, it fades into the background.
Our cat watched it suspiciously on day one, sniffed the cord on day two and ignored it after that.
The cord and rope are the things to watch with pets and children. Keep them out of walkways while the robot is running, and do not let anyone pull on either.
The voice prompts help here: everyone knows when the robot is attached, working or done.
Which homes it suits best
| Home | How well it fits | Why |
|---|---|---|
| House with sliders and big windows near outlets | Excellent | Full PRO cleaning with no station to carry |
| Apartment with outlets by each window | Very good | Cord is no problem |
| Home with a balcony and no outlet | Fair | Cord limits reach |
| Many small windows | Fair | Setup outweighs each job |
If you care about edges and your windows are near sockets, this is the best-value way to get ECOVACS’s top cleaning hardware.
Living with it: week one to week four
In week one I cleaned inside glass near outlets and tried every mode.
In week two I moved outside, learned to route the cord through a door gap and settled on Thorough plus Edge.
In week three I tried the joystick, Spot and Zone modes on the cat’s favorite patch of the patio door.
In week four it was routine: a window or two whenever they caught the light.
My overall satisfaction each week, out of 10.
What surprised me, good and bad
The best surprise was how sharp the edges were. I expected an improvement over round robots, but not frame lines this clean.
The second was how much I used the joystick. For a single nose print in the middle of a big door, driving the robot there was quicker than any mode.
The less welcome surprise was cord management on outside windows. It is not hard, but it is one more thing to think about each time.
And without a station, storage took a little organizing until I found a tub that held everything.
How each detail compared with my expectations before testing.
Common mistakes to avoid
The WINBOT W2S PRO is easy to use, but these habits hold it back.
| Mistake | What happens | Better habit |
|---|---|---|
| Cord too short for the window | Robot stops before the far edge | Check reach before you start |
| Cord and rope crossing | Tangles and pulls it off route | Run them on opposite sides |
| Rope tied to something light | No real backup | Anchor to something solid |
| Soaking-wet pad | Streaks and runs | Wring it out well |
| Dirty edge brushes | Dust smeared along frames | Wash every few sessions |
| Fast mode on dirty glass | Haze remains | Thorough or Heavy-Duty |
What I would change
A longer cord, or a simple bag that holds the robot, cord, rope and bottle together, would make it easier to live with.
Is the WINBOT W2S PRO worth the money?
For windows near outlets, yes.
You get the same robot as the more expensive Omni version: the same grip, the same TruEdge 2.0 edges and the same spray. You give up the battery station and the tidy storage.
If you regularly pay for professional window cleaning, compare that over a few years with owning the robot.
Ask yourself three questions. Are most of your windows near an outlet? Do clean frame lines matter to you? And can you live with storing a cord and rope separately?
If so, the W2S PRO is the smart way to buy ECOVACS’s best cleaning.
Where your money goes
Compared with lower ECOVACS models, you are paying for 10,000 Pa of suction, TruEdge 2.0 and the bigger tank.
Compared with the Omni version, you save by skipping the battery station. That is a good trade if your outlets are where your windows are.
In my test, the edges were the clearest upgrade over cheaper robots. They are what you notice when the sun comes through the glass.
How it compares with other ECOVACS window robots
| Feature | W2S PRO | W2S PRO Omni | W2S Omni | WINBOT MINI 2 |
|---|---|---|---|---|
| Power | Corded, backup battery | Battery station | Battery station | Corded, backup battery |
| Max suction | 10,000 Pa | 10,000 Pa | 8,000 Pa | 8,000 Pa |
| Edge cleaning | TruEdge 2.0 brushes | TruEdge 2.0 brushes | TruEdge scrubber | Four corner brushes |
| Tank | 4.1 oz | 4.1 oz | About 80 ml | Small |
| Modes | Seven plus joystick | Six | Five | Five |
| Best for | PRO cleaning near outlets | PRO cleaning anywhere | TruEdge with a station | Small windows |
| Your home | Is the W2S PRO a fit? | Why |
|---|---|---|
| Windows near outlets | Excellent | Full PRO cleaning, simpler kit |
| You notice frame lines | Excellent | TruEdge 2.0 |
| Balconies with no outlet | Fair | Cord limits reach |
| You want one carry case | Fair | The Omni version has one |
The square body is what lets it clean right into rectangular corners.
Other ECOVACS window robots I tested
For the same robot with a battery station, read my WINBOT W2S PRO Omni review.
For a station that also washes the pads, see my WINBOT W3 Omni review.
For small windows, my WINBOT MINI 2 review covers the compact option.
Which one is right for you: is the WINBOT W2S PRO your match?
4 quick questionsWINBOT W2S PRO specifications
From manufacturer data and my own testing.
How I tested and scored the WINBOT W2S PRO
For four weeks, I used the WINBOT W2S PRO on every window and door within cable reach in my house, inside and out.
I tried all seven modes and the app joystick, compared results with and without Edge mode and tested what happens when the power is cut.
I tracked pad condition, cord handling and how much I still finished by hand.
I then checked my notes against ECOVACS specifications and owner documentation.
- Cleaning (8.7): dust, pollen, fingerprints, pet marks, water spots and outside grime on windows and doors.
- Edge coverage (8.9): how close TruEdge 2.0 reaches to frames and corners, with and without Edge mode.
- Ease of use (8.2): setup, the power cord and rope, the seven modes, the app joystick, refills and storage.
- Safety (8.8): suction, the backup battery, the safety rope and carabiner, and the 10-stage protection.
The overall score of 8.6 is an editorial rating that reflects those four areas.
WINBOT W2S PRO FAQ
Is the ECOVACS WINBOT W2S PRO worth it?
Yes, if your windows are near outlets and you want clean edges. If your windows are far from sockets, the W2S PRO Omni is the better choice.
What is the difference between the W2S PRO and W2S PRO Omni?
The robot is the same. The Omni adds a battery station that stores, powers and anchors it, so you can clean away from outlets.
How strong is the suction?
ECOVACS rates it at 10,000 Pa, the highest in its range.
Does it need to be plugged in?
Yes, it runs on a power cord. A backup battery keeps it on the glass for about 30 minutes if power is lost.
What is TruEdge 2.0?
Four edge brushes with dense felt bristles that sweep along the frame so the robot cleans right up to the edge.
How many cleaning modes does it have?
Seven: Fast, Thorough, Deep, Heavy-Duty, Edge, Spot and Zone, plus a joystick in the app.
Can I use it on outside windows?
Yes. Anchor the safety rope to something solid and route the cord carefully.
How big is the solution tank?
4.1 fl oz.
Does it include a spare pad?
Yes, one spare pad is included.
Is it loud?
It has a steady fan noise, fine to work alongside in the same room.
How do I store it?
Coil the cord and rope, and keep the robot, bottle and spare pad together in a tub or bag.
Does it work on round windows?
It is designed for rectangular glass. Unusual shapes may not be fully covered.
Do I need the app?
Not for a basic clean. You need it for setup, choosing modes and the joystick.
Can I use an extension cord?
For windows far from outlets, an extension cord works. Keep it taped down and away from the rope. If you need it often, the Omni version with a battery station is more practical.
Senior home appliance tester
Emily has tested home appliances for a living since 2016, including five years as a test coordinator at a national consumer advocacy group, and has run HouseholdMe's cleaning tests since 2021. She has a degree in industrial design, so she looks at how a product is built, not just how it performs. She used the WINBOT W2S PRO for four weeks for this review, on every window and door within cable reach of an outlet in her home.
- Four weeks of hands-on testing of the ECOVACS WINBOT W2S PRO
- ECOVACS product specifications and owner documentation
- General window-cleaning and robot-safety guidance