Dreame is one step ahead of the competition with its world-first steam cleaning robot vacuum — but I'm wondering if this is one step too far

A few too many limitations

by · TechRadar

News By Ruth Hamilton Published 9 September 2026

(Image credit: Future)

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  • The Aqua20 Pro Ultra Roller X Complete is Dreame's new flagship robovac
  • World's first robovac to use heated steam at 180°C as part of its mop system
  • Can also clear double-step thresholds up to an impressive 3.9in / 10cm

When I spoke to a load of major robot vacuum brand execs about where they thought robovacs were heading in the next five-to-10 years, a common theme cropped up: the desire to close the performance gap between manual and robotic floor cleaners. That's not just the vacuuming power, but the mopping prowess too.

And so, at IFA 2026, we have the world's first robot vacuum with steam cleaning powers: the Dreame Aqua20 Pro Ultra Roller X Complete. It's an exciting prospect, but based on the demo I saw, I'm not sure I'd be throwing out my manual steam cleaner any time soon.

The Aqua20 Pro Ultra (I'm not typing the full name each time) vaporizes water into 356°F / 180°C steam, which is pushed out through four outlets along the roller edge. This steam is designed to loosen tough, dried-on stains. The roller then gently scrubs them away, using hot water.

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On the demo I saw, the steam function seemed quite gentle — there wasn't enough to be visible on a still photo, although you can see it in the video clip above. My first concern about the system is that there might not be enough steam to really make an impact.

The second is that because the heating happens inside the bot itself, using it has a big impact on battery life. I spoke to Dawn Chen, a Director at Dreame, and he confirmed that with the steam function on, the robot's runtime is around 30 to 40 minutes, compared to around four hours with it off. Steam needs to be switched on and off manually, in the app, and can only be used for a zone that's less than 10 square meters in size. Chen explained that the function is meant for spot-cleaning only; to tackle stubborn and dried on stains.

That runtime is fairly limiting. It makes it difficult to use the steam function as part of a more extensive cleaning session, which is a situation I expect will be common.

Making it work

The process of adding the steam function caused Dreame a few headaches. "During this R&D process, we faced two main problems. The first is about the limescale. Because we are turning the water into steam, this process will produce a lot of limescale," Chen explained. "To solve this problem, we added some limescale remover inside the robot, in the pipeline."

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