Best Robot Window Cleaners · head-to-head

WINBOT W3 Omni vs W66

A sourced, side-by-side comparison. WINBOT W3 Omni is cheaper at $699.99. Every spec and price links to its source.

Which is better: the WINBOT W3 Omni or W66?

The W66 wins 1 of the 1 specs we compare head to head; the other wins 0.

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Full spec sheet

marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.

Spec WINBOT W3 Omni W66
US price $699.99
BrandEcovacsHUTT
Released2026-01
Suction power (Pa) 10000 2600
Cleaning speed mode 8 modes (Fast/Deep/Thorough/Edge/Spot/Zone/Heavy-duty/Remote); 16 cm/s top speed, ~1m35s per 1x1m panel in Fast mode ~2.5 min/m^2; intelligent suction algorithm adjusts to dirt level
Battery backup min 130 30
Spray system 3-nozzle wide-angle spray, 80ml tank, >=70% spray coverage; Vortex Wash station auto-washes pads with 16 jets (~1 min cycle) 150ml intelligent water tank, wipes 70-90 sq m of glass per fill
Path planning WIN-SLAM 5.0 with 1mm dynamic obstacle avoidance Laser module measures range for accurate window-frame edge detection
Noise level (dB) 71.5 65
Safety tether 3-layer composite power/safety cable rated to 100kg, plus 1m backup rope 5m safety cable (load rating not published)
Edge detection Optocoupler edge sensor, 0.02s response; TruEdge retracting scrubber cleans to ~1.1cm of the frame Laser-based frame/edge ranging, more precise than prior HUTT models per manufacturer
Weight (lb) 4.9 3.46

Sources — WINBOT W3 Omni: ecovacs.com (verified 2026-08-01). W66: hutt.bg (verified 2026-08-01).

What's the difference between the WINBOT W3 Omni and W66?

Where the two actually differ on the specs we track (9 of 9). Matching specs are omitted.

  • Suction power (Pa): WINBOT W3 Omni 10000 vs W66 2600
  • Cleaning speed mode: WINBOT W3 Omni 8 modes (Fast/Deep/Thorough/Edge/Spot/Zone/Heavy-duty/Remote); 16 cm/s top speed, ~1m35s per 1x1m panel in Fast mode vs W66 ~2.5 min/m^2; intelligent suction algorithm adjusts to dirt level
  • Battery backup min: WINBOT W3 Omni 130 vs W66 30
  • Spray system: WINBOT W3 Omni 3-nozzle wide-angle spray, 80ml tank, >=70% spray coverage; Vortex Wash station auto-washes pads with 16 jets (~1 min cycle) vs W66 150ml intelligent water tank, wipes 70-90 sq m of glass per fill
  • Path planning: WINBOT W3 Omni WIN-SLAM 5.0 with 1mm dynamic obstacle avoidance vs W66 Laser module measures range for accurate window-frame edge detection
  • Noise level (dB): WINBOT W3 Omni 71.5 vs W66 65
  • Safety tether: WINBOT W3 Omni 3-layer composite power/safety cable rated to 100kg, plus 1m backup rope vs W66 5m safety cable (load rating not published)
  • Edge detection: WINBOT W3 Omni Optocoupler edge sensor, 0.02s response; TruEdge retracting scrubber cleans to ~1.1cm of the frame vs W66 Laser-based frame/edge ranging, more precise than prior HUTT models per manufacturer
  • Weight (lb): WINBOT W3 Omni 4.9 vs W66 3.46

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