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Comparisons · Robot Window Cleaners3 robots · checked 16 Oct 2026

A situation

Are robot window cleaners worth it for just a few windows?

With only a few windows, a robot has to earn its setup on every pane: a cord to reach, a pane big enough to fit, and the minutes it takes. This page lays those out for three corded models.

Seen from the living-room floor, three white window-cleaning robots work the glass of a low two-part window, each on its own coral safety rope, and each gold mains lead runs over the window board and down into its plug in the wall sockets under it, past a squeegee left in a bucket.

This page checks

  1. List priceWhat it costs to buy
  2. Cord reachDistance from the outlet
  3. Smallest paneMinimum glass size
  4. Time per areaMaker speed figures
  5. WeightCarried to each pane
Ecovacs Winbot Mini

Ecovacs

Winbot Mini

IIAssisted63Capable
$239.99list
Where to buy

Owner reports surface consistent pad maintenance pattern after launch

Ecovacs Winbot W1 Pro

Ecovacs

Winbot W1 Pro

IIIConditional65Capable
No US list price
Where to buy

Ecovacs US product page shows no price; its US campaign page shows one

Winbot W2 Omni launch repositions W1 Pro as value-tier option

HOBOT 2S

HOBOT

2S

IIAssisted51Limited
$349list
Where to buy

HOBOT-2S window cleaning robot unveiled ahead of October 2021 US launch

Full specifications16 figures on record · 14 differ
Figure
Winbot Mini
Winbot W1 Pro
2S
List price
Winbot Mini$239.99
Winbot W1 ProNot on record
2S$349
Released
Winbot MiniJan 2025
Winbot W1 ProJun 2022
2SOct 2021
Power
Winbot MiniMains cable (4.7 m) with backup battery (30 min power-off protection)
Winbot W1 ProMains-corded with backup battery
2SMains-corded, 5 m cord
Backup hold
Winbot Mini30 min
Winbot W1 ProNot on record
2S20 min
Smallest pane
Winbot Mini8.7 in
Winbot W1 Pro11.8 in
2S15.7 in
Safety rope
Winbot Mini427 lb
Winbot W1 ProNot on record
2S331 lb
Cleaning width
Winbot Mini8.5 in
Winbot W1 Pro10.3 in
2S9.4 in
Weight
Winbot Mini2.9 lb
Winbot W1 Pro3.4 lb
2S2.87 lb
Charge time
Winbot Mini180 min
Winbot W1 Pro180 min
2SNot on record
Battery capacity
Winbot Mini11 Wh
Winbot W1 Pro9.6 Wh
2SNot on record
Battery type
Winbot MiniLi-ion
Winbot W1 ProLi-ion
2SLi-Po
Adhesion
Winbot Mini7,500 Pa
Winbot W1 Pro2,800 Pa
2SNot on record
Noise
Winbot Mini72 dB
Winbot W1 Pro72 dB
2S64 dB
Navigation
Winbot MiniWIN-SLAM 3.0 path planning with window-frame and obstacle detection.
Winbot W1 ProWIN-SLAM cross-pattern mapping with edge detection
2SEdge-Leakage Sensor: pneumatic edge detection at the window seal and on frameless glass, with a preprogrammed zigzag route, horizontal then vertical; no mapping or vision-based navigation
Connectivity
Winbot MiniWi-Fi
Winbot W1 ProWi-Fi
2SNot on record
Size
Winbot Mini8.5 × 8.5 × 2.2 in
Winbot W1 Pro10.6 × 10.6 × 3.1 in
2S9.45 × 9.45 × 3.39 in

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A handful of panes

What each window costs you in setup and time

All three plug into a wall outlet. Maker times run about 2.4 to 3 minutes per 10.8 sq ft (1 m²): 2.4 for the 2S, 2.8 for the W1 Pro, 3 for the Winbot Mini. A hands-on test of the W1 Pro took about 8 minutes for one side of a 25.5 by 66 in window.

EcovacsWinbot Mini
EcovacsWinbot W1 Pro
HOBOT2S
1List priceUS dollars, list price
Winbot Mini

$239.99

Maker product page, as held in our record
Winbot W1 Pro

No list price found

Ecovacs' US campaign page shows $399.99; the product page lists no price.

Ecovacs US campaign page
2S

$349

List price on HOBOT's US page.

HOBOT US product page
2Cord reachPower cord from robot to outlet
Winbot Mini

15.4ft (4.7 m)

Total power cable, robot to wall plug: 3.5 m DC cord plus 1.2 m AC cord. Converted from 4.7 m.

Maker product page
Winbot W1 Pro

15.4ft

Maker lists 4.7 m. A hands-on reviewer needed an extension cord for a second-floor window.

Ecovacs US page
2S

16.4ft

Maker lists a 5 m cord.

HOBOT product page
3Smallest paneMinimum glass size, short side
Winbot Mini

8.7in

Maker prints 8.66 x 9.84 in (22 x 25 cm). Short side shown.

Ecovacs product page
Winbot W1 Pro

11.8in

Maker prints 11.8 x 15.7 in (30 x 40 cm). Short side shown.

Ecovacs US page
2S

15.7in

Maker prints more than 15.7 x 15.7 in (40 x 40 cm).

HOBOT US product page
4Time per areaMaker speed figure
Winbot Mini

3 min per 11 sq ft (fast mode)

Printed as 3 min per square meter, plus or minus 10 seconds, in fast mode.

Maker product page
Winbot W1 Pro

2.8 minper 10.8 sq ft (1 m²)

Maker figure, 2 minutes 50 seconds, plus or minus 10 seconds.

Ecovacs US page
2S

2.4 minper 10.8 sq ft (1 m²)

Maker gives 4.7 in (12 cm) per second, about 10.8 sq ft (1 m²) in 2.4 minutes.

HOBOT product page
5WeightThe robot alone, carried to each pane
Winbot Mini

2.9lb

Maker product page, as held in our record
Winbot W1 Pro

3.4lb

Maker lists 3.4 lb (1.53 kg).

Ecovacs US page
2S

2.9lb

Maker lists 2.9 lb (1,300 g).

HOBOT US product page

Same on all three: plugged into a wall outlet, with a cord of 15.4 to 16.4 ft.

Close on an upstairs window sill, a square white window-cleaning robot lies face up where it was carried and set down, its coral safety rope clipped to a suction anchor stuck on the glass above it and its gold power cord run along the sill and down into a socket under it, with the garden treetops below the window.

Your home

How each one fits a home like yours

Set the conditions that describe your home. Each robot answers from its own Fit Check; nothing is scored until you choose.

Fit check

Describe your home

Pick what applies. Each robot answers from its own record.

Window style
Frame style
Building height
Across what you setEach robot’s own Fit Check
Winbot MiniSet a condition
Winbot W1 ProSet a condition
2SSet a condition
Window styleNot set
Winbot MiniNot set
Winbot W1 ProNot set
2SNot set
Frame styleNot set
Winbot MiniNot set
Winbot W1 ProNot set
2SNot set
Building heightNot set
Winbot MiniNot set
Winbot W1 ProNot set
2SNot set

Sources

Where every figure comes from

  • Winbot Mini · Ecovacs product page
  • Winbot W1 Pro · ecovacs.com/us product page and campaign page; one hands-on review, Jul 2023
  • 2S · hobot.us product page; hobot.com.tw 2S page

Each figure was read on a maker page or seller listing on 2 Oct 2026. Not found means the pages listed were searched and say nothing; it never means the robot lacks the feature.

Questions

What readers ask

How long does one window take?

Ecovacs gives 2 min 50 s per 10.8 sq ft (1 m²) for the W1 Pro and 3 minutes for the Winbot Mini. HOBOT gives about 2.4 minutes for the 2S. A hands-on test of the W1 Pro took about 8 minutes for one side of a window.

Do they need an outlet at every window?

Yes. All three are corded: the W1 Pro lists a 15.4 ft (4.7 m) cord, the Winbot Mini 15.4 ft (4.7 m) and the 2S a 16.4 ft (5 m) cord.

What do they cost?

The W1 Pro is $399.99 on Ecovacs’ US campaign page. HOBOT’s US page lists the 2S at $349. The Winbot Mini’s list price in our record is $239.99.

Common questions

What readers ask about this comparison.

Next up

Beyond windows: which glass robots work on mirrors, shower glass, and tabletops?

Read the comparison
Comparison ID: RV–CMP–7515 · Last reviewed Jun 23, 2026 · Based on owner reports, manufacturer documentation, and firmware release notes

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