The suction pad on my window-cleaning robot is losing grip and the unit slides
Home Nura guide — category: Window Cleaning Robots
Diagnosis
Warning: this symptom can point to a serious hardware defect. Stop using the device until the cause is found. We recommend contacting the manufacturer or an authorized repair centre before you try to use it again.
Recommended steps
Unplug it right away and stop using the device. Document the symptom (photos, video, sounds), then contact the manufacturer's support. If the device is still under warranty, keep your proof of purchase handy: this kind of failure is exactly what the warranty is for.
Repair or replace?
If the problem persists after these checks and the appliance is no longer under warranty, compare the repair estimate with the cost of a new model.
If you decide to replace it
Window Cleaning Robots: the shortlist from our buying guide
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Best overall
Ecovacs Winbot W2 Omni
Portable battery station, self-winding safety cable, three-nozzle spraying and edge detection for frameless glass.
Photo: © ECOVACS
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Best value
Cecotec Conga WinDroid 1090 Double Spray Connected
Double spray, 8 modes, app and remote control, safety cord and a roughly 30-minute battery in case of a power outage.
Photo: © Cecotec
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Best for frameless glass
Hobot 2S
Compact and light, two ultrasonic nozzles, edge sensor, 4.5 m rope and a backup battery lasting up to 20 minutes.
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Other common problems in this category
These issues affect the same type of appliance — each one comes with a diagnosis and the recommended steps.
- Window Cleaning RobotsMy window-cleaning robot keeps losing grip and nearly falls
- Window Cleaning RobotsMy window-cleaning robot leaves streaks after every pass
- Window Cleaning RobotsMy window-cleaning robot beeps non-stop and reports low suction
- Window Cleaning RobotsMy window-cleaning robot leaves a streak in the centre of the glass every pass
Frequently asked questions
Usually, yes, if the failure shows up during the warranty period and isn't caused by misuse. A product in the Window Cleaning Robots category bought new from an authorized retailer normally comes with a manufacturer's warranty: check its length in the manual or on the brand's website. Consumer protection rules also vary by province and territory, so keep your proof of purchase.
If you're still within the store's return window, a return or exchange is usually the fastest fix. After that, the manufacturer's warranty takes over: its customer support can arrange a repair or a replacement. Even outside the warranty, the manufacturer can often repair the device for a fee. Either way, keep your proof of purchase.
Our public methodology lowers the Nura Score /10 of any model in the Window Cleaning Robots category whose recurring failures are documented in owner reviews. A model that breaks down too often never tops our rankings, whatever the brand.
Generally, yes. Routine maintenance, such as cleaning, replacing a gasket or recalibrating, is part of normal use and doesn't usually affect your warranty. Irreversible changes to the hardware are what can cause problems. For a product in the Window Cleaning Robots category, stick to the steps described in the manufacturer's manual and read the warranty terms before going any further.
When a product fails in its first few months of normal use, the cause is usually a manufacturing defect. Contact the seller or the manufacturer with your proof of purchase and a description of the symptom: for a model in the Window Cleaning Robots category that is still under warranty, this is the typical case for a free repair or replacement. Warranty terms vary by brand, so read yours.