Independent rankings
Window cleaning robots whose makers rate them for panes at least 2 m tall, ranked on the pane they fit, the glass one tank covers and route planning.
A patio door or a stairwell pane is where a window robot earns its keep, and where a small one runs out of water halfway up. Only machines whose maker states a largest pane at least 2 m tall are listed, with that pane on every row; a robot that states no largest pane is left out however well it cleans, because without the figure nobody can say it covers glass that tall. Weighted on the size of pane the maker rates it for, how much glass one tank covers and whether it plans a route rather than bouncing off the frame.
4 / 17 models evaluated · Updated
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Dreame's C1 with an 8,000 Pa motor and a portable battery station: corner brushes, 14 cm/s with resume and return to start, a 140 kg-rated cable, 63 dB, panes to 2.5 × 4 m, on glass, marble or tiles.
Quiet 5,500 Pa window robot with corner brushes, a 14 cm/s planned route that resumes and returns to its start, a 140 kg-rated tether and a battery-station kit sold separately.
Largest pane: 250 × 800 cm
Highest on this list · Largest pane: 250 × 800 cm
MOVA's first window robot with a base station: 10,000 Pa, panes to 2.5 × 8 m, rated for 90 m² of wet cleaning, an 80 ml tank with warm water, corner brushes, 80 minutes off the mains, 3-year warranty.
MOVA's light 8,000 Pa window robot: sprays from a 120 ml tank for 32 m², plans a Z or N route, talks you through the job in 15 languages and holds on for 30 minutes after a power cut.
Which window robots fit your glass, how they hold on when the power fails, what the rope and the backup battery are for, and which ranking to open next.