# Ecovacs Winbot W2S Omni vs Ecovacs Winbot W3 Omni

As of Oct 26, 2026, the Ecovacs Winbot W2S Omni costs $600 and the Ecovacs Winbot W3 Omni costs $700, so the Ecovacs Winbot W2S Omni is $100 cheaper. The Ecovacs Winbot W3 Omni has a published review score and ranks #7 in our window cleaning robots ranking; the Ecovacs Winbot W2S Omni is not scored yet. Pick the Ecovacs Winbot W2S Omni for large glass doors and picture windows. Pick the Ecovacs Winbot W3 Omni for large picture windows and glass walls.

Prices checked Oct 26, 2026. HTML version: https://robotsforthat.com/vs/ecovacs-winbot-w2s-omni-vs-ecovacs-winbot-w3-omni/

## Side by side

| | Ecovacs Winbot W2S Omni | Ecovacs Winbot W3 Omni |
|---|---|---|
| Price | $600 | $700 |
| 3 year cost | $600 | $700 |
| Our score | Not scored yet | 6.3/10 |
| Rank in Windows | #11 | #7 |
| Status | on sale | on sale |
| Warranty | n/a | n/a |
| Suction | 8,000 Pa max, 3,000 Pa while moving (brand claim) | 3,300 Pa while moving (spec sheet); marketing also cites 10,000 Pa |
| Cleaning speed | 1 sq m in about 1 min 45 s in Fast Mode (brand claim) | 16 cm/s; 1 m² in about 1 min 35 s in Fast mode (brand claim) |
| Safety rope | Composite safety and power cable rated to 100 kg, plus a 1 m backup safety rope | Combined power and safety cord rated to 100 kg, plus a 1 m rope on the station |
| Battery backup | 4,500 mAh battery, 110 min runtime; stays attached 30 min or more at low power (brand claim) | Up to 130 min cordless runtime; stays attached over 30 min at low power |
| Spray | Three nozzle spray, 80 ml tank | Auto and app spray, 80 ml tank, about 50 m² per fill in Fast mode |
| Corners | TruEdge scrubber, reaches within 0.04 in of edges (brand claim) | TruEdge spinning edge scrubber, 1.1 mm edge accuracy claimed |
| Frameless glass | Supported, framed and frameless flat windows | Edge detection on frameless glass reported by Gizmodo; minimum glass thickness 3 mm |
| Base station | Portable station with auto cable take up, control panel and storage | 10 kg Vortex Wash station washes and re-wets the pad in about a minute |
| Noise | 68 dB (brand rating) | n/a |
| Cord length | n/a | 5.5 m (CyberShack) |
| Max window | n/a | 8 m wide by 2.5 m tall per run (CyberShack) |
| Best for | large glass doors and picture windows | large picture windows and glass walls |
| Skip if | your windows are small or split into many panes | you only have a few small windows |

## What reviewers found

### Ecovacs Winbot W2S Omni

- Teltarif: Cleaned dust and fingerprints evenly; light lines after the first pass shrank on a second pass; some moisture left at edges and drips on the sill. [Source](https://www.teltarif.de/en/fensterputzroboter-testbericht-ecovacs-winbot-w2s/news/100853.html)

### Ecovacs Winbot W3 Omni

- Gizmodo (via Gizmodo Japan translation): Cleaned a 4 by 3.5 ft window in about 2 minutes in Fast mode, but left streaks, missed parts of windows with tapered frames and once stopped after cleaning only one corner. Reviewer judged it hard to justify at $700. [Source](https://www.gizmodo.jp/2026/04/ecovacs-winbot-w3-omni-review-window-cleaning-robots-have-a-long-way-to-go.html)
- CyberShack (4.5/5): Results were better than hand cleaning with precise edge coverage over several weeks; left a faint outline where the pad stops and sometimes reported being stuck. [Source](https://cybershack.com.au/cleaning/ecovacs-winbot-w3-omni-review/)
- TechRadar (Netherlands): Station returned a clean, damp pad in about 1 to 1.5 minutes; good on normal dirt and edges, heavy build up still needed manual work. [Source](https://global.techradar.com/nl-nl/home/robot-vacuums/ecovacs-winbot-w3-omni-review-nl)

## Questions buyers ask

### Which is better, the Ecovacs Winbot W2S Omni or the Ecovacs Winbot W3 Omni?

The Ecovacs Winbot W3 Omni has a published review score and ranks #7 in our window cleaning robots ranking; the Ecovacs Winbot W2S Omni is not scored yet. Pick the Ecovacs Winbot W2S Omni for large glass doors and picture windows. Pick the Ecovacs Winbot W3 Omni for large picture windows and glass walls.

### Which is cheaper?

The Ecovacs Winbot W2S Omni at $600, versus $700 for the Ecovacs Winbot W3 Omni, checked Oct 26, 2026. Over 3 years with running costs: $600 vs $700.

### What is the difference between the Winbot W2S Omni and the Winbot W3 Omni?

Suction: 8,000 Pa max, 3,000 Pa while moving (brand claim) on the Winbot W2S Omni, 3,300 Pa while moving (spec sheet); marketing also cites 10,000 Pa on the Winbot W3 Omni. Cleaning speed: 1 sq m in about 1 min 45 s in Fast Mode (brand claim) on the Winbot W2S Omni, 16 cm/s; 1 m² in about 1 min 35 s in Fast mode (brand claim) on the Winbot W3 Omni. Safety rope: Composite safety and power cable rated to 100 kg, plus a 1 m backup safety rope on the Winbot W2S Omni, Combined power and safety cord rated to 100 kg, plus a 1 m rope on the station on the Winbot W3 Omni.

Full reviews: [Ecovacs Winbot W2S Omni](https://robotsforthat.com/robot/ecovacs-winbot-w2s-omni/index.md), [Ecovacs Winbot W3 Omni](https://robotsforthat.com/robot/ecovacs-winbot-w3-omni/index.md)