Window Robots

Buying advice

Check how your windows open before buying

A window robot only helps with the outside of the glass if you can place it there safely from indoors. BS 8213-1:2004, the British code of practice on window safety in use and during cleaning, deals with how far people can safely reach and with safety restrictors. Look at your own hinges: tilt-and-turn and reversible sashes often let you reach the outer face, while top-hung casements fitted with restrictors may not. Never remove a restrictor to get a robot through the gap, particularly in rooms that children use, and check the opening lets you pass the robot out and back without stretching.

Match the robot to the glass you have

A 2021 survey in IEEE Access sets out the ways window-cleaning robots attach to glass, move and clean, which helps when you read a maker's description of its own design. For a home, the questions are practical. If you have self-cleaning glass, tinted film or privacy film, ask the maker whether its pads and any cleaning fluid are safe on those surfaces. If a double-glazed unit has misted between the panes, no robot will clear it, so get the unit repaired first. In hard-water areas, ask whether the maker recommends distilled water for a streak-free finish.

Choosing between Winbot and the HOBOT range

Looking at the listings in October 2026, published prices on this page sat between about $250 and $500, from the HOBOT 388 to the Ecovacs Winbot W2 Omni, and all of them showed a price. Since the HOBOT 388, 398 and 2S come from one maker, ask HOBOT to set out what changes between them so you pay only for differences you will use. Think honestly about how often you clean windows: a robot used a few times a year should pack away neatly and take little setting up. Keep the box and receipt until you have tried it on every kind of window in the house.

What to look for

• Pad shape, and how close it cleans into corners and along edges
• Tether length and anchoring for upper-floor or outside panes
• Noise level, if you plan to run it while the household is at home

Common questions

Is a window robot safe to use upstairs?

Follow the maker's guidance for each model. Window robots are typically used with a safety tether anchored indoors, and some include backup power to stay on the glass if the mains supply cuts out.

Does a window robot replace a window cleaner?

For regular upkeep of glass you can reach, it can take on much of the job. Very high, large or hard-to-access windows may still need a professional.

Sources and further reading

• A survey on techniques and applications of window-cleaning robots — IEEE Access.
  Peer-reviewed review of how window-cleaning robots move, hold on to glass, clean and sense, in homes and high-rises.
• BS 8213-1:2004 Windows, doors and rooflights: design for safety in use and during cleaning — BSI.
  Code of practice on designing windows that occupants can open and clean safely, covering reach and restrictors.