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Window-cleaning robots · 3 MODELS IN DETAIL
ECOVACS WINBOT W2 OMNI and HOBOT-2S as robots, Kärcher WV 2 as a handheld alternative, with a verified Amazon ranking. Count your panes, check outside surfaces and frames – that's what decides whether a robot earns back its price.
Data checked 14/10/2026 · Bestpreisradar editorial team · How we compare
YOUR CHOICE IN THREE BUDGET TIERS
For a few reachable windows, a handheld unit is often enough. A window vacuum works in a different way to a robot.
Our recommendations by features and use case, not a complete market test. The tiers apply within the category; daily deals can change the price order. Source check: 15.10.2026.
Why this choice? Our comfort choice for lots of large glass surfaces: window robot with a portable station.
Before buying: Minimum window size 30 × 40 cm per the manufacturer. Check securing and pane suitability before every use.
Search current offers ↗Search for this model on Amazon ↗Advertising · model search, not a checked individual offer
Why this choice? Our mid-range choice for larger panes with an automatic route and two spray nozzles.
Before buying: A power cable and safety cord remain required. Windows larger than 40 × 40 cm per the manufacturer.
Search current offers ↗Search for this model on Amazon ↗Advertising · model search, not a checked individual offer
Why this choice? Our budget choice for a few easily reached windows: apply cleaning solution, wipe and extract the water.
Before buying: Not a robot: guiding it by hand and pre-cleaning remain your job.
Search current offers ↗Search for this model on Amazon ↗Advertising · direct model link; check execution in shopTHE KEY DIFFERENCES
3 models compared
| What matters in everyday use | ECOVACS WINBOT W2 OMNI | HOBOT-2S | Kärcher WV 2 Black Edition window vacuum |
|---|---|---|---|
| Product image | | | |
| Unit type | Window-cleaning robot with station | Window-cleaning robot with spray function | Cordless window vacuum (handheld) |
| Manufacturer | ECOVACS | HOBOT Technology | Kärcher |
| Evidence status | Model name; technical specs not yet cross-checked | Model name; technical specs not yet cross-checked | Listing title and Amazon rank confirmed |
| Security | not checked | not checked | not applicable (handheld) |
| Frameless panes | not checked | not checked | yes, manual guidance |
| Open check | Rope, backup power, cable, minimum size, tank | Rope, backup power, cable, minimum size, tank | – |
| Battery runtime (listing information) | – | – | 35 minutes |
| Amazon rank (24/09/2026) | – | – | No. 1 in window vacuums |
| Data basis | Amazon · product search ECOVACS WINBOT W2 OMNI (no verified data sheet) (DE) | Amazon · product search HOBOT-2S (no verified data sheet) (DE) | Amazon · listing page Kärcher WV 2 Black Edition (DataForSEO 24/09/2026) (DE) |
On small screens the table can be moved sideways. The linked data sheets state the exact variant.
Our assessment: The WINBOT W2 OMNI is ECOVACS's current window-robot model with carry and supply station. For conservatories, floor-to-ceiling windows and regular cleaning, it's the comparison candidate with a station.
The trade-off: We haven't yet cross-checked a manufacturer datasheet for this model. Read the safety tether, backup battery, cable length and minimum pane size on the ECOVACS site before buying.
Information checked on 14/10/2026. Not our own product test. Status: manufacturer data sheet not yet cross-checked.
Our assessment: HOBOT has sold the 2S for years, also as a Sichler variant in the TV-adjacent Pearl range. It's considered a reference for frameless operation and the spray function.
The trade-off: Noise, cable length and minimum size figures differ between retailers; we only publish them after checking the manufacturer datasheet.
Information checked on 14/10/2026. Not our own product test. Status: manufacturer data sheet not yet cross-checked.
Our assessment: On 24.09.2026, the WV 2 Black Edition was ranked No. 1 in the Amazon subcategory for window vacuums, with over 4,000 purchases in the past month (per Amazon). The title states 35 minutes battery runtime. For normal windows, showers and mirrors, it's the quick, affordable solution.
The trade-off: A window vacuum doesn't clean on its own: soaping remains manual work, and you won't reach upper-floor outside surfaces with it. Variants (Plus, Premium, Universal Home) differ in accessories.
Evidenced: Amazon bestseller rank No. 1 in "window vacuums" on 24/09/2026 · Amazon's Choice; over 4,000 purchases in the previous month (Amazon figure). Source: DataForSEO Merchant API (Amazon), amazon.de, Germany location. A rank reflects demand at the time of retrieval, not a quality judgement.
Information checked on 14/10/2026. Not our own product test. Status: listing title and rank confirmed via DataForSEO; data sheet not cross-checked.
IS A ROBOT WORTH IT FOR YOUR WINDOWS?
Count your panes and estimate width and height. Take the minutes per square metre from the robot's data sheet and from your own experience with the handheld unit.
Calculation: panes × width × height = area; area × minutes per m² = time per cleaning round. For the robot, positioning, rope and corner finishing add to this; for the handheld unit, soaping up does. Only the pure device time is compared.
DEMAND INSTEAD OF GUT FEELING
| Rank | Listing title (shortened) | Purchases in previous month |
|---|---|---|
| No. 1 | Search for this model on Amazon ↗ | over 4000 |
| No. 2 | Search for this model on Amazon ↗ | over 400 |
| No. 6 | Search for this model on Amazon ↗ | over 500 |
| No. 11 | Search for this model on Amazon ↗ | over 200 |
| No. 28 | Search for this model on Amazon ↗ | over 50 |
Ranks and purchase figures are Amazon's own figures at the time of retrieval; they show demand, not quality. Sponsored results aren't counted. Links are affiliate links (advertising).
FROM TV ADVERTISING
Pearl sells HOBOT robots as Sichler models, sometimes with their own accessories. Compare item number and generation before treating a price as cheaper.
TV shopping product guides →Affordable TV window vacs remain hand-held devices: soaping up is manual work, outer surfaces remain unreachable.
Calculate time required →It wipes the pane, but you still position it, attach the safety rope, change pads and finish off the corners yourself. You save time on large, hard-to-reach surfaces, not on small windows.
Only models with edge detection work on frameless surfaces. This is stated in the manufacturer's data sheet and matters for balcony railings and showers.
We haven't cross-checked the robots' manufacturer data sheets at this stage. We therefore only state confirmed information and flag the outstanding check.
NEW FLAT · CLEAR PLAN
From fridge to WiFi: check what you already have, mark what you need to buy, and add up your budget.
Open personal moving checklist →Editorial: Bestpreisradar · Data checked on 14/10/2026. We compare the models named using linked manufacturer and listing data, Amazon ranks from the DataForSEO Merchant API, and explicitly marked original tests. The recommendations are our interpretation of this information; we don't carry out our own lab tests. The selection doesn't cover the entire market.
Manufacturer data proves features, not automatically quality. Missing measurements are not replaced by stars or overall scores. Prices and availability are shown in the respective shop; a model search may include differing variants. The order is not a quality ranking.
Advertising: Amazon links are affiliate links. We receive a commission on qualifying purchases. Methodology and funding · Editorial team and contact
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