Lubluelu CHYW201 (window-cleaning robot with dual spray): our review

The living room picture window can look reasonably clear until afternoon sunlight picks out every neglected patch. That is where handing over the repetitive wiping starts to sound appealing. The CHYW201 advertises suction among the highest levels for window cleaning robots, a substantial specification for a machine that works against vertical glass. We like that strong starting point. It is also among the best overall in our scores.

Keep the distinction clear: suction helps the robot attach to the surface; it does not tell you how readily dried grime will lift. Cleaning liquid, the cloth, and what has settled on the glass all influence the result. Compatibility covers framed windows and mirrors, with outdoor cleaning supported. For household glass with a surrounding frame, this is a convincing set of essentials. Corners still need realistic expectations, whatever the suction specification says.

A spring Saturday can disappear into the sunroom before you have even reached the sliding door. The large reservoir gives this robotic window cleaner more time between refills, so fetching cleaning liquid should interrupt the job less often. That is a practical attraction when several broad panels are waiting. Your Saturday has other applicants.

Dual spray and a quick cleaning mode round out the cleaning equipment. The appeal is straightforward: liquid delivery is built into the robot, and a quick option is available when you want to address routine marks. Neither feature establishes how stubborn residue will respond. Will you mainly be keeping up with fingerprints, or tackling glass that has gone neglected through winter? That distinction matters more than an appealing mode name. A generous tank supports a longer session; it does not turn every dirty surface into the same chore.

An upstairs pane can look close enough from the floor until you need to lift a stopped robot off it. A loss of power there calls for a way to retrieve the robot, and the UPS backup battery is advertised to keep it attached for longer than the category average. That extra holding time is for retrieval. It is not permission to leave the room or continue cleaning after the power supply fails.

The practical constraint is the outlet: cleaning requires mains power, so arranging the cord remains part of the job. Before starting, follow manufacturers' instructions to secure a safety tether to a fixed anchor and stay nearby, particularly when working outside upstairs. Those precautions do not guarantee attachment. Outdoor compatibility also does not make rainy weather suitable; manufacturers advise keeping exterior cleaning for dry conditions. Decide how you will retrieve the robot before placing it beyond comfortable reach.

Ecovacs WINBOT W2S OMNI has higher suction pressure than CHYW201 at 8000 Pa, making it the alternative to consider if maximum advertised suction is your priority. That is an upward step within a category where the main model already stands strongly. It should not be mistaken for evidence that CHYW201 lacks adequate suction.

Ecovacs WINBOT W2S OMNI has lower water tank capacity than CHYW201 at 80 ml, leaving less liquid aboard before a refill. For a sunroom full of glass, that is a meaningful tradeoff. Ecovacs WINBOT W2S OMNI has a similar overall score to CHYW201, so the choice turns on which specification suits your routine. With CHYW201, remote control lets you give commands without relying on an app. Want a large reservoir and straightforward controls? This model has a clear reason to stay on your shortlist.