The first industry standard for window-cleaning robots, QB/T 8242—2026, has been implemented, with Ecovacs participating in drafting

"Will it fall off?"

This is the thought that flashes through everyone's mind the first time they place a window-cleaning robot on the glass. No manufacturer dares to write "never falls" in its marketing; when it comes to high-altitude work, no one can bear the responsibility behind those four words.

What a window-cleaning robot sells is not just cleaning power, but the promise that risk has been taken over by technology.

Window-cleaning robots are becoming an increasingly obvious variable in the home robot industry.

IDC data shows that in the second quarter of 2026, global window-cleaning robot shipments were about 847,000 units, up 59.8% year on year, a growth rate notably higher than the 21.5% growth of the overall household cleaning robot market in the same period. AVC data shows that from 2020 to 2025, the Chinese market grew from 480 million yuan to 1.7 billion yuan, a compound annual growth rate of 28.6%.

Production capacity is also expanding. According to Cailianshe, Ecovacs' WINBOT line had monthly output of only a few thousand to ten or twenty thousand units in its early years; after volumes picked up in 2025, monthly capacity moved from the 100,000-unit level to the 200,000-unit level. In 2025, global window-cleaning machine shipments were about 2.373 million units, up 70.4% year on year, and the industry expects them to exceed 3 million units in 2026.

Behind the volume growth is, in essence, the growth of "trust."

01 A "small category" that is scaling up

Cleaning glass is probably the household chore people should least do by hand: low-frequency yet essential, simple yet dangerous.

High-rise residences, large floor-to-ceiling windows, and sealed exterior windows have long been cleaning blind spots. There are only two traditional approaches: lean out and take the risk, or pay someone.

What robot vacuums solve is what you can do but don't want to do; what window-cleaning robots solve is what is hard to do safely yourself.

The difference lies in the consequences. If a robot vacuum misses a corner, it is only an experience issue; if a window-cleaning robot misjudges a window edge, it is a safety issue. So its first value is not saving time, but moving people away from danger.

But the other side of market expansion is that unstable experiences are amplified along with it. When monthly capacity jumps from ten or twenty thousand units to the 200,000-unit level, any fluctuation in a component will be amplified across millions of shipments.

Consumers want the machine to take on the risk for them, yet in actual use they still need to attach a safety rope, confirm glass conditions, and watch it run. Long-term hands-on tests by overseas review organizations show that such products can handle floating dust and routine maintenance, have limited capability against stubborn stains, and in most scenarios cannot do without manual placement, transfer, and supervision.

This is not a new problem. Inability to clean edges and corners, loud noise, and suitability only for large flat glass were the norm for early window-cleaning products; several years on, the basic experience has improved greatly, but edge blind spots, inability to remove stubborn stains, and the need for manual supervision remain common shortcomings faced by products of all brands.

For a machine working on glass dozens of stories up, a millimeter-level blind spot corresponds to a difference in users' sense of "control."

Li Xiaohua, product line director of Ecovacs' WINBOT, recounted an internal debate at a briefing: in the early years, some on the team believed that if a certain window occasionally got stuck and 95% of scenarios could be covered, "it should basically meet user needs."

But in-home research overturned that idea. In one user's home, a large floor-to-ceiling window always caused the machine to get stuck in a distant corner; although the sticking point was only that one window in his home, it got stuck every time, and the user's choice was simply not to clean that window at all.

"If this window is the main window in his home, then for him it's not a 1% stuck rate," Li Xiaohua said. "It's a question of 0 and 1."

Moreover, because window-cleaning machines serve a safety function, consumers' tolerance for them is naturally lower.

What is harder is mass production.

Building a good prototype does not mean being able to stably produce millions of units. The safe adhesion of a window-cleaning machine depends on the fan, seals, air-replenishment efficiency, structural strength, and sensor coordination. Variables hidden inside components, such as the upper and lower limits of fan air-replenishment efficiency and the rebound consistency of sealing cotton after aging, can all affect the machine's stability on the glass surface. Competition will ultimately enter the manufacturing stage.

Ecovacs says its R&D and manufacturing use a collaborative mechanism. When structures, components, or functions change, processes, tooling, and testing methods are adjusted in sync, and products must pass multi-dimensional verification of function, performance, safety, and abnormal conditions. What it aims to solve is turning laboratory metrics into production-line quality control, and then into a stable experience in consumers' hands.

Standards set the common baseline for the industry; company standards answer whether a product can keep working in more complex environments, and whether that capability can be replicated in every machine.

The gap between "meeting the standard" and "leading the experience" lies precisely here.

02 The first industry standard lands, but "meeting the standard" is not the end point

On October 13, 2026, the first industry standard for window-cleaning robots, QB/T 8242—2026 "Household and similar use window-cleaning robots," was publicly promoted, and it takes effect on December 1. The standard was led by the China Household Electric Appliance Research Institute; Ecovacs is one of the whole-machine enterprises that participated in drafting it, alongside Shanxi Jiashida, Beijing Hete, and several testing institutions.

It covers operational protection, cleaning performance, test methods, inspection rules, marking, and instructions for use; defines scenarios such as vertical flat glass, glass with adhesive frames, glass with non-adhesive frames, and frameless glass; and defines concepts such as safety devices, cleanliness, and cleaning cycles.

It targets a long-standing difficulty of comparison. Brands explain adsorption force and cleaning capability in different ways, making parameters hard for consumers to understand. The standard translates brands' language into unified test methods and turns "trust" into measurable indicators.

The first version of the industry standard sets quantitative thresholds: overall cleanliness of no less than 70%, edge and corner cleanliness of no less than 65%, and operational durability of no less than 200 hours.

But all standards have boundaries; they must be strict enough, yet not so high that most enterprises cannot reach them. Industry standards are a floor, not a ceiling.

For the window-cleaning robot category, the first difficulty the industry standard faces is not even setting indicators, but defining terms: what counts as adsorption failure, abnormal operation, and what working conditions power loss, getting stuck, and obstacle crossing each constitute, and so on. Before 2026, each brand had its own way of describing these concepts. The first thing the first version of the standard does is draw unified definitions for these terms.

Li Xiaohua also revealed another trade-off that is being formulated. Ecovacs' internal testing standards cover far more scenarios than the industry standard. "If we followed Ecovacs' current testing standards and included all user scenarios as test items, I would worry that when the industry standard is first released, not many products in the industry would actually be able to meet it."

In other words, the "low threshold" part of the first version of the industry standard is partly the result of a deliberate trade-off. First establish the standard, then talk about raising it. Under the current mechanism, standards cannot be adjusted for two to three years after publication, and a revision takes about a year from initiation to implementation, so this system will run stably for three to four years. The industry standard sets no high threshold for performance indicators such as cleaning effectiveness; what it accomplishes is "from 0 to 1."

In Leiphone's view, problems follow: a standard can define basic safety and cleaning capability, but it is very difficult to cover all household windows.

Glass under standard working conditions is only the starting point; irregular windows, narrow windows, and window surfaces with obstacles are the real dividing line. If a machine that "meets the standard" gets stuck, misses spots, or leaves water streaks in a real home—situations that often require human intervention—how should the word "meets the standard" be understood?

This is precisely the tension between industry standards and company standards, and the dividing line between leading players and ordinary players.

03 Ecovacs' Real Test

Ecovacs is one of the earliest entrants in this category. It initiated R&D in 2011 and launched its first product, Winbot, in 2013.

It entered early, and that brought another advantage.

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Ecovacs summarizes this as the "flow of foundational technology" between different product lines.

This explains why Winbot iterates faster than the category itself, and also foreshadows its next step: the perception upgrades and cleaning-structure evolution that Deebot went through will most likely be repeated on Winbot.

The base-station products launched from late 2023 to 2024 combine the power supply and safety rope and use a built-in battery as a fallback for low-battery scenarios; Ecovacs sees this as a turning point.

Market feedback was direct.

All View Cloud data shows that in 2025 Ecovacs accounted for more than 60% of domestic sales of window-cleaning robots, ranking first in the Chinese market for five consecutive years, with a 62.3% share in the first quarter of that year; in the first quarter of 2026, its share of the online high-end market above 2,000 yuan reached 96.5%. IDC data shows that in 2025 its global shipments were about 1.195 million units, a 50.30% share, and in the first half of 2026 shipments were 1.075 million units, a 57.60% share, ranking first globally.

But being No. 1 in share also means bearing a heavier burden of explanation. A company that sells "safety promises" must accept stricter scrutiny than one that sells "cleaning efficiency."

In the end, competition in window-cleaning robots is not about who makes a machine that looks more like a robot, but about who can push uncertainty lower. Competition has extended from features to standards, supply chains, manufacturing, and global service systems.

The industry still needs to solve at least three things in the next stage: adaptation to complex window types, the upper limit of cleaning effectiveness, and further reduction of manual intervention.

Modern households want to hand dangerous, tedious, low-frequency labor to machines. But technology has not eliminated risk; it has only shifted risk into product design, standard testing, user operation, and corporate responsibility.

Standards are the starting point of trust, but not trust itself.

04 Conclusion

Ecovacs judges that the future home robot may not be an "all-capable robot" that does everything, but more likely a collaboration between general-purpose robots and specialized robots:

Embodied intelligence handles understanding tasks and scheduling devices, while the machine that actually climbs onto exterior windows is still one specially designed for glass, frames, air pressure, and fall risks.

Ecovacs' significance as a sample lies not only in its leading market share, but also in the fact that it has witnessed and participated in the formation of an emerging category throughout the process.

From project initiation in 2011 and the launch of its first product in 2013, from standalone machines to base stations to participating in drafting the first set of industry standards, and ultimately going overseas, what Ecovacs has gone through is both the life cycle of a product and a typical way for Chinese companies to define an emerging category.

But taking rules overseas is harder than taking products overseas.

Li Xiaohua acknowledged during the group interview, "If global standards are ultimately defined by two or three domestic brands themselves, whether they can actually influence other overseas brands, countries, and users is a fairly big question."

In Leiphone's view, the statistical calibers of the various figures in this article differ, but they all point to one thing: this category has entered scaled growth, and Ecovacs is now in a position where more people are observing it through a magnifying glass.

After the standard is implemented, more players will be attracted to enter, and product prices, functions, and forms will all become more diverse. Being the first to enter a category does not mean continuously holding the power to define it; the market ultimately belongs to those who turn certainty into industry common sense.