Window Cleaning Robots

Buying advice

Fitting window robots into a cleaning round

The robots on this page are compact suction units suited to internal glazing, glass partitions and shopfront panes, not façade machines for a building's upper storeys. Robots for high-rise glass and façades are a separate class; a 2019 survey in the International Journal of Precision Engineering and Manufacturing-Green Technology groups them by how they climb, attach and clean. For a contractor or facilities team, the useful question is whether a robot can work one pane while a person cleans the next. Trial that on your own sites with a stopwatch before you buy units for a whole team.

Keep window robots inside your height plan

HSE's guidance on window cleaning at height asks duty holders to avoid working at height where they reasonably can, for example by cleaning from inside or using water-fed poles from the ground. A suction robot can support that approach on glass staff can reach from inside a room, but placing it on an outer pane, or retrieving it after a fault, can mean leaning through an opening. Put those moments in your risk assessment rather than treating the robot as the control measure. For exterior glass above ground level, compare the robot against the water-fed pole methods set out in the Federation of Window Cleaners guide written with HSE.

Budgeting for robots across several sites

Looking at the listings in October 2026, the Ecovacs Winbot W2 Omni carried the top sticker at roughly $500 and the HOBOT 388 the smallest at roughly $250, and no listing was quote-only. For a cleaning business the larger costs sit around the unit: spare pads so a dirty set can be washed while a clean set works, replacement safety cords when they wear, and extension leads suitable for the sites you visit. Decide who washes pads and inspects cords at the end of each shift. Keep a spare unit so a fault does not stop a round, and log run times so you can see which sites justify a robot.

What to look for

• How it stays on the glass, and its backup if power is interrupted
• Spray system: built-in water spray or manual pre-wetting of the pads
• Edge detection for frameless glass, and the smallest pane it can work on

Common questions

Can a window-cleaning robot clean the outside of my windows?

Many can work on either side of the glass, as long as you can place the robot on the outer pane and secure its tether. Check each model's guidance before using it on upper-floor windows.

Will it work on mirrors and shower screens?

Most work on any smooth, flat glass, including mirrors and glass doors. Textured glass and very small panes may not suit them.

Sources and further reading

• Survey on glass and façade-cleaning robots: climbing mechanisms, cleaning methods, and applications — International Journal of Precision Engineering and Manufacturing-Green Technology (Springer).
  Peer-reviewed review of robots that climb building glass and façades, grouped by how they attach, move and clean.
• Working at height whilst window cleaning — Health and Safety Executive (HSE).
  How UK duty holders should plan window cleaning to avoid or control work at height, with water-fed poles as one option.
• Safety in window cleaning using water-fed pole systems — Federation of Window Cleaners, with HSE.
  Industry guide, written with HSE input, on cleaning glass from the ground with water-fed poles and limiting body strain.