Ecovacs Winbot W2 Pro Omni vs HOBOT HOBOT-S7 Pro
3 questions both answer, side by side. Every answer is backed by the dated sources at the bottom.
Side by side
Can a window robot clean the outside of windows?
Ecovacs says the W2 Pro Omni suits indoor windows through exterior glass, including floor-to-ceiling, small, frameless and tilting windows, with a portable battery station.
Good to know: Maker's description; TechRadar's first look covered windows, mirrors and shower doors, not outside panes. See also: can a window robot fall off the glass?
TechRadar used the S7 Pro on the outside of patio doors: the dirtier panes came out significantly cleaner but streaky, with visible paths and track marks, and it couldn't shift caked-on dirt or bird droppings.
Good to know: One reviewer, one unit, reviewed June 2025; lightly soiled indoor glass came out well. HOBOT's page doesn't say whether the robot is meant for exterior glass.
Can a window robot fall off the glass?
The W2 Pro Omni holds on by suction and is tied to its station by a combined power and safety cord in case suction lets go.
Good to know: Ecovacs lists a 12-stage protection system; TechRadar's hands-on was a first look, not a long-term test.
HOBOT lists a 4.5 m safety rope rated for 230 kgf and a built-in backup power supply that keeps the S7 Pro on the glass for 20 minutes with an audio alert if power fails; edge sensors detect frameless edges and gaps.
Good to know: Maker's specs. In TechRadar's review it fell off a window once and was caught by the rope, so attach it every time.
Can a window robot spray and wipe on its own?
The W2 Pro Omni sprays through three wide-angle nozzles and wipes with a wet mop.
Good to know: Maker's description.
The S7 Pro sprays water as a 15 µm mist through two ultrasonic nozzles, with a concentrated spray for stains, and wipes as it moves.
Good to know: Maker's description. TechRadar found it sprays at intervals, not continuously, and its two 80 ml tanks need topping up about every pane.
Only checked for one of them
Can a robot clean your windows?
The Winbot W2 Pro Omni held on by suction and cleaned windows, mirrors and shower doors in hands-on use.
Good to know: Uses a safety tether in case suction fails. First-look test, not a long-term review.
How we know (4 sources)
Hands-on first look at the Ecovacs Winbot W2 Pro Omni on windows, mirrors and shower doors. It holds on by suction, with a safety tether to the power pack in case it lets go.
Read the sourceGlobal product page for the Winbot W2 Pro Omni, read Oct 23, 2026: a portable station with a built-in battery, an automatic cable coiler, controls and storage; a two-in-one cable that combines safety and power cords; three-nozzle wide-angle spray with a wet mop; and a 12-stage protection system. Reopened Oct 26, 2026: Ecovacs says it suits 'indoor windows to an exterior glass surface', including floor-to-ceiling, small, frameless and tilting windows, with a 1 m safety rope at the bottom of the station; stays attached for over 30 minutes at low battery.
Read the sourceRuth Hamilton's hands-on review of the Hobot S7 Pro, read Oct 26, 2026: list price $439 / £329 at the time. She used it on indoor glass and on the outside of her patio doors. Lightly soiled indoor glass came out well, but the dirtier outside panes, though much cleaner, were left streaky with visible paths and track marks, and outdoors much of the mist blew away in the breeze; it can't remove caked-on dirt or bird droppings. The mist sprays at intervals from two 80 ml tanks, enough for about one side of one patio-door pane. It fell off a window once during testing and she caught it by the safety rope, so she says to always attach it. It cleaned a 1.3 m² pane in about 7.5 minutes (HOBOT advertises 1 m² in 2 min 36 s), refused a 32 cm wide window, and must be moved by hand from pane to pane. Downsides: awkward remote, shrill voice prompts and, at the time, no app support.
Read the sourceHOBOT's product page for the HOBOT-S7 Pro window robot, read Oct 26, 2026: a 4.5 m safety rope rated for 230 kgf of pulling force, and a built-in uninterruptible power supply that keeps the robot on the glass for 20 minutes with a continuous audio alert if power fails. Edge-Leakage-Bumper (ELB) sensors detect air leaking at window seals or frameless edges, and gaps between panels, so it suits frameless glass; silicone bumpers protect frames. Dual ultrasonic nozzles turn water into 15 µm mist, plus a concentrated Spot-on Spray for stains. Runs from a 4 m power cord (extendable to 8 m); HOBOT lists 1 m² in 2.6 minutes. The page doesn't say whether it is meant for exterior glass, and shows no price.
Read the source