Best Tosima Window Cleaning Robots (2026)

The X1 is the Tosima that most clearly does what the others only describe. Its 85 ml tank is the largest in the range and has a window so you can read the level, which prevents the dry-pad surprise that mid-pane refills cause. Two ultrasonic nozzles atomise the water into mist that wets the cloth evenly.

The listing names a backup battery and a maximum-suction pump, though it does not give a runtime or a pascal figure, which is a gap worth noting. Against the W5, the X1 has a bigger tank but less detail on adaptive grip, so it fits owners who clean larger panes more than those who want the most documented grip system.

Wash the pads after each use, rinse the nozzles occasionally, and check that the tank cap seals fully. Use a rope on any window above waist height, since the listing offers no rope specification. Fill the tank only to the marked line and let the pad soak through for a few seconds before you set the robot on the glass, so the first pass does not skate over a dry cloth and leave dust trails behind.

The W5 is the best documented grip system in the range. A variable-frequency pump moves between about 2400 and 3200Pa depending on what the robot senses on the glass, while the title advertises a 6400Pa maximum, so read the pair as a working range and a ceiling. Bidirectional ultrasonic spray wets the pad on both directions of travel.

The 65 ml tank is visible from outside, which is helpful, though smaller than the X1. A triple safety system is listed, which is a general statement. Compared with the WA9C Pro, the W5 has two nozzles instead of four but gives clearer information on suction behaviour, so it suits people who want predictability.

Keep the pads clean and swap them when the fibres mat. Wipe the suction seal before every run, use the rope on elevated panes, and note that the same name appears on two listings, so check the model you are ordering.

With four nozzles the WA9C Pro wets a pad more evenly than any two-nozzle sibling, and six cleaning modes give it the widest set of path choices in the range. Dirty or sticky glass benefits most, because even dampness is what loosens a film before the pad crosses it.

Its safety description includes power-failure protection, which is the feature that matters most for a mains-powered robot on glass. The listing does not publish a number for it, so treat it as a promise to verify at purchase. Against the X1, it has finer spray but a smaller stated tank, so on a big window it will need a refill sooner.

Rinse all four nozzles with clean water every few weeks, because more nozzles mean more places to block. Keep the cord clear and wash the pads after each job. When switching between its six modes, start with the one that matches your pane shape, because a top-down mode on a wide, short window wastes time on repeated turns, while a side-to-side pass finishes it in a fraction of the cycles.

The W6 Pro is the top of the stated suction range at 6400 to 7200Pa, and it comes with both an app and a remote so you can choose how to control it. A storage box in the package is a small but real convenience, since a window robot needs a clean, dry place that is not a cupboard floor.

That suction range is the highest published in this lineup, which helps on tall or awkward panes where a firmer seal builds confidence. The trade is that the listing says less about the spray system than the X1 or WA9C Pro, so check the tank size at purchase.

Store it in the box with the pads removed and dry. Check the seal ring for dust each time, and use the rope. If you rarely use the app, the remote alone is fine. Keep the box for the life of the robot, since it protects the pads and the suction ring from dust between seasons, and a robot that sits for months on a shelf is the one whose seal fails first.

The W3 is an earlier model that stays in the lineup for a simple reason: its feature set is stated plainly. A dual-direction auto-spray wets the pad as it moves, an anti-drop sensor and edge detection form part of a triple safety system, and the robot works out the size and shape of the window by itself.

It is a plain design with fewer modes than the WA9C Pro and a less detailed suction story than the W5, so it suits straightforward rectangular windows. Compared with the W2 it adds spray in both directions, which means better finish on the return pass.

Because it is an older model, check that spare pads and cloths are available, since a robot that outlives its pad supply quickly becomes a drawer item that nobody uses. Wash the pads after use, wipe the sensors that detect the edge, and use the rope on any pane above waist height.

The W2 is the lowest-suction and lowest-tier Tosima here, with 3800Pa and AI 3.0 path planning, and it is the one to look at for a small flat. Microfibre pads, anti-fall sensors and edge detection cover the basics.

At this rating it is less suited to textured or very large glass, because less suction leaves less margin if the surface is dirty. Against the W3, the W2 leaves out the dual-direction spray, so expect a slightly less even finish on a dirty pane.

Keep the glass free of loose dust before you start, wash the pads each time and check the seal. Use the rope even on small windows, because a lighter robot still falls if the grip lets go. If a pane has a dark, deeply soiled patch, wipe that spot by hand first, because a low-suction robot that drags over a gritty smudge is more likely to lose its seal at exactly that point.