# HOBOT-2S vs W66: specs and price compared

A sourced, side-by-side comparison of the HOBOT-2S (HOBOT) and W66 (HUTT) among robot window cleaners.

## Side by side

| Spec | HOBOT-2S | W66 |
| --- | --- | --- |
| US price | $299 | not published |
| Brand | HOBOT | HUTT |
| Released | 2021 | — |
| Suction power (Pa) | — | 2600 |
| Cleaning speed mode | ~2.4 min/m^2, 12 cm/s movement speed | ~2.5 min/m^2; intelligent suction algorithm adjusts to dirt level |
| Battery backup min | 20 | 30 |
| Spray system | Dual patented ultrasonic nozzles, 108kHz, 15um mist; 2x26ml replaceable water tanks | 150ml intelligent water tank, wipes 70-90 sq m of glass per fill |
| Path planning | AI smart route planning (zigzag: horizontal pass then vertical) | Laser module measures range for accurate window-frame edge detection |
| Noise level (dB) | 64 | 65 |
| Safety tether | 4.5m rope rated to 200kg (per hobot.com.tw); some third-party specs list 150kgf | 5m safety cable (load rating not published) |
| Edge detection | Edge-leakage sensors + auto edge detection | Laser-based frame/edge ranging, more precise than prior HUTT models per manufacturer |
| Weight (lb) | 2.87 | 3.46 |

## Key differences

- Cleaning speed mode: HOBOT-2S ~2.4 min/m^2, 12 cm/s movement speed vs W66 ~2.5 min/m^2; intelligent suction algorithm adjusts to dirt level
- Battery backup min: HOBOT-2S 20 vs W66 30
- Spray system: HOBOT-2S Dual patented ultrasonic nozzles, 108kHz, 15um mist; 2x26ml replaceable water tanks vs W66 150ml intelligent water tank, wipes 70-90 sq m of glass per fill
- Path planning: HOBOT-2S AI smart route planning (zigzag: horizontal pass then vertical) vs W66 Laser module measures range for accurate window-frame edge detection
- Noise level (dB): HOBOT-2S 64 vs W66 65
- Safety tether: HOBOT-2S 4.5m rope rated to 200kg (per hobot.com.tw); some third-party specs list 150kgf vs W66 5m safety cable (load rating not published)
- Edge detection: HOBOT-2S Edge-leakage sensors + auto edge detection vs W66 Laser-based frame/edge ranging, more precise than prior HUTT models per manufacturer
- Weight (lb): HOBOT-2S 2.87 vs W66 3.46

## Sources

- HOBOT-2S: https://www.hobot.com.tw/hobot-2s/ (hobot.com.tw, verified 2026-08-01)
- W66: https://hutt.bg/en/hutt-w66-window-cleaner-robot (hutt.bg, verified 2026-08-01)

Canonical: https://frontdeskreview.com/gear/robot-window-cleaners/hobot-2s-vs-hutt-w66/
Cite: Per The Front Desk Review, HOBOT-2S ($299) vs W66 (not published) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/robot-window-cleaners/hobot-2s-vs-hutt-w66/
License: CC BY 4.0.