Smart Window Cleaning Robots | Compare Models & Specs

Four lines on each product page do the separating: suction, spray system, pane geometry and the anti-fall method. Suction runs from 3,000 Pa up to 6,000 Pa depending on the model, and it is what holds the robot to the glass against wind load on upper floors. Spray is dual-spray, 4-way ultrasonic or none at all — the wider the spray, the more of the pane is pre-wetted before the pads pass, which is the difference between lifting water spots and smearing them across the glass. Geometry decides the body: a square ultra-thin unit suits tight framing, while the G8 kit carries a triangular head and a telescopic pole for A-frame and awkward panes. Anti-fall is either a UPS hold through a power cut or a triple anti-drop mechanism. Those four lines tell you which model fits the glass you actually have.

The robot holds on with vacuum, so the number that decides whether it stays put is measured in pascals, not watts. At ground level a 3,000 Pa unit is working against its own weight; at the 30th floor it is also working against wind load on the glass, which rises with height and with gusting. That is why the range tops out at 6,000 Pa, and why several models pair high suction with a UPS hold that keeps the pump running through a power cut. For low-rise villas and shopfronts 3,000 Pa is enough; for curtain walls and towers, buy the top of the range. Check the minimum pane size as well — a very small pane gives the suction less glass to hold on to.

Yes, and more than most buyers expect. A dry pass drags dust across the glass and leaves the fine grey film that shows up in low sun; the spray is what turns that into something the microfibre pads can lift and the squeegee can push off. Dual-spray models wet two lines as the robot travels, 4-way ultrasonic spray covers the pane from four directions and suits mineral-heavy water and coated glass, and pad-only models are for maintenance passes over glass that is already clean. If you are quoting commercial work, price the spray version from the start — a second visit to re-clean streaked glass costs more than the upgrade.

The minimum depends on the model and on how much customisation you need, rather than being one figure for the whole range. The S9 dual-spray model is held for ready-to-ship wholesale at a low 200-unit MOQ, which makes it the natural first order for testing a market. We also support mixed-model orders for qualified wholesale and OEM buyers, so you can build a portfolio across several price points without meeting a separate minimum on every sku. Send us your target market and expected annual volume and we will confirm the structure in writing.

Lead time depends on your configuration and order volume, so treat any single figure with suspicion. Stock orders dispatch from inventory in days. Logo OEM runs are scheduled once artwork is approved and the deposit is settled, because artwork preparation, carton printing and manual production sit between approval and assembly. Deeper ODM projects add a sampling round and a certification review before production begins. All three stages can slip during a peak manufacturing season or a certification backlog, so build contingency into your launch plan and ask for the schedule in writing against your exact configuration before you commit to a fixed date.

For the main export markets expect CE for the EU and EEA, FCC for the United States, and RoHS compliance on hazardous-substance restrictions. Because these are lithium-ion powered devices, battery transport documentation — transport test summaries and classification documents — is a separate requirement on top of product certification and has to be passed to your freight forwarder. Window robots also carry a safety element that ordinary small appliances do not: the anti-fall system and its safety rope are frequently a customer safety-review and insurance condition, so confirm the redundancy specification against the exact model you are buying rather than the range as a whole.

Plan by facade, not by floor area. A robot works one pane or one continuous glass run at a time, and the real constraint is repositioning, power and water between runs, so the practical unit of planning is the number of separate glass planes an operator can reach and start within a shift. A villa, a shopfront or a single sunroom is a one-robot job. A tower with independent curtain-wall sections, or a route covering several buildings a day, is normally planned as two or more units with one supervisor, so a stalled unit does not stop the schedule. Buy one unit first, time a real shift on your own glass, then size the fleet from what you measured rather than from a data sheet.

Four things, and they take minutes: wash the microfibre pads after every working day, because a pad loaded with grit scratches coated glass; empty and rinse the water tank and let it dry before refilling, or the spray nozzles start to leave spotting; wipe the suction seal, the drive tracks and the drop-detection sensors with a damp cloth so the vacuum stays sealed and the safety cut-off behaves predictably; and charge the battery to storage level rather than to full. Keep the remote, the app login and the telescopic pole with the case so a job can be finished without a second trip. If suction weakens, the usual cause is a contaminated seal or a partly blocked nozzle, not a failing pump.

Five repeat offenders: running the unit dry over dusty glass, which grinds grit into the pads and the suction seal; leaving a powered-off unit stuck to a pane, when nothing is holding the vacuum; using an abrasive or strongly acidic cleaner on coated, low-e or tinted glass instead of the spray system and water; ignoring a slowing spray until the nozzle clogs solid; and storing the pack flat and empty for months, which shortens lithium life faster than any other habit. A unit that gets clean pads, a rinsed tank and a charged pack will outlast one that is run hard and put away wet.