Roborock Saros 20 Review: Plenty of power and minimal bulk

The Roborock Saros 20 is one of those robotic vacuums that, after a few days of intensive use, make you realize how the segment has reached a surprisingly mature level. Not because it does “one more thing” than others, but because it tackles in a concrete way some historical limits of the category: height, thresholds, hair tangles, thick carpets and real dirt management.

I used it for weeks in a ground-floor apartment with a garden and three dogs. This means dirt dragged inside every day, wet footprints when it rains, hair in industrial quantities and ongoing dirt.

In short, it is the worst possible context for a vacuum robot. And it is precisely in this scenario that the Saros 20 convinced me, especially thanks to its enormous suction power and some clever touches that many would surely appreciate.

Roborock Saros 20 Review: 36,000 Pa of power really make the difference

Roborock Saros 20 video review

Design and materials

The first thing that catches the eye about the Roborock Saros 20 is its thickness: 7.98 cm. And to be clear, this isn’t a marketing number thrown out there; it’s a real difference compared to the usual top-of-the-line models with a LiDAR tower. Because no, here there is no tower, and it has been replaced by the new StarSight Autonomous System 2.0 that eliminates the classic upper “mushroom” and allows the robot to slip under furniture up to 7.95 cm. In my case it passed under low furniture where others stopped. And when you have three dogs, the dirt under the furniture is a constant.

It integrates a small dust container that will be automatically emptied as needed, and an 80 ml water reservoir that will be filled before and during cleaning, so that the wash cloths can stay damp at the right level.

And speaking of the washing cloths, at the bottom you’ll find two rotating mops that can extend to avoid wetting carpets or to allow the robot to operate in suction-only mode: as seen for the Saros 10r, the washing cloths can be detached autonomously and left directly in the charging base.

At the center of the Roborock Saros 20 we find the DuoDivide system, which adopts a completely different approach from traditional single brushes. It isn’t a single continuous unit, but a structure composed of two counter-rotating rollers designed to funnel dirt toward the center, where it is immediately sucked into the main duct. The peculiarity isn’t just in the opposing motion of the rollers, but in the speed difference between the two segments, which helps to “break” tangles before they can form.

In daily use, especially in a house with three dogs like mine, this solution has proven extremely effective. Hair is collected consistently and, more importantly, does not tend to wrap around the brush as often happens with more traditional systems. Maintenance remains necessary, but the frequency with which I had to intervene manually was noticeably lower than the average of robots tested in recent years.

Regarding washing, one of the two rotating mops can extend laterally thanks to the FlexiArm system, thus adhering better to the edges and reaching the areas close to walls. And it’s a concrete solution, not just for show: along baseboards and low furniture the coverage is decidedly more precise. The front side brush follows the same philosophy, able to extend to improve pickup in corners and automatically lift when needed, exactly as happens for the washing cloths when the robot detects a rug.

The build is solid, premium, with quality plastics and impeccable assembly. You can feel it’s a high-end product even just lifting it, and thanks to the AdaptiLift Chassis 3.0, a mechanical system that lifts the chassis using rotating arms and auxiliary wheels, the robot analyzes potential obstacles, lifts the front part and then the whole body to climb over them.

Let’s talk about thresholds up to 8.8 cm in total (4.5 cm + 4.3 cm on dual steps). In my apartment, the threshold between the indoors and the garden area has always been a limit for other models. The Saros 20 cleared it without violent bumps, without “bumping”, but climbed over it in a controlled manner.

Anyway, removing the LiDAR tower could have been a risk. But Roborock has actually introduced one of the most advanced systems I’ve seen on a home robot. The Dual-Transmitter 3D ToF solid-state system projects over 21,600 sensor points at a sampling rate 21 times higher than traditional systems. Together with the RGB camera, the robot recognizes over 300 types of objects.

Even the charging and self-cleaning dock introduces tangible daily life novelties. The new RockDock is a complete self-maintenance station that washes the mops with water at 100°C, dissolving grease and residues, then dries them with hot air at 55°C to prevent bad odors. In a home with pets this feature is essential, because mops stay dry and do not develop bad smells over time.

The base automatically empties the dust, refills the clean water, and cleans its own tray, drastically reducing manual maintenance. It’s bulky, yes, but buyers of this class know they need space for the base.

Suction Power and Cleaning Quality

The HyperForce motor reaches 36,000 Pa. On paper that’s an impressive figure, but what matters is the real result. Fine dirt carried in from the garden, sand, dust and especially hair: the Saros 20 collects all of it with above-average effectiveness, but in my view the real difference is made by the DuoDivide system with a pair of counter-rotating brushes: hair is directed toward the center and sucked directly, while the speed difference between the brushes helps to break tangles.

I can’t claim it’s magically maintenance-free, because periodic cleaning remains necessary, but compared to other robots I had to intervene much less often thanks to how the suction duct is designed and how it handles dirt: it’s one of the few robots able to maximize the space available inside the integrated container, “compressing” almost the dirt it inhales, so auto-emptying during cleaning isn’t always required and the whole process is faster.

Even the FlexiArm side brush has a design tuned to self-liberate from hair using centrifugal force. In a home with three dogs this really makes a difference in the long run.

Another interesting aspect is how it handles carpets. The Roborock Saros 20 automatically lifts the chassis up to 30 mm when it detects a rug and increases suction power. In my case I have medium-pile rugs near the entrance where a lot of dirt accumulates. The robot cleans them effectively and can handle heights up to 3 cm without getting stuck.

I won’t dwell too much on the Roborock Saros 20 app because, once again, it represents one of the brand’s historic strengths. The interface is mature, stable and incredibly complete: in my view it remains one of the best in the realm of robotic vacuums. It’s precisely through the app that the Saros 20’s true potential is unlocked, especially regarding the smart features.

Con SmartPlan 3.0 the robot analyzes usage patterns and automatically adapts strategy, suction power and washing level based on the environments. You can leave total autonomy to the AI, allowing it to decide how to intervene on different surfaces, or manually adjust every parameter: from suction power in Pa to the amount of water distributed on the floors.

The mapping is completely automatic and very precise. After the first cycle, the floor plan is generated in detail and can be easily edited: you can divide or merge rooms, assign names to spaces and set customized configurations for each. Each room can have a different combination of suction and washing, with cycles programmable by days and times.

The management of no-go zones is intuitive: you can create virtual walls or exclusion areas with a few taps, preventing the robot from entering certain parts of the house or crossing specific thresholds. In a home with animals or delicate objects, this flexibility makes a difference.

There is no shortage of integration with the smart ecosystem thanks to Matter support, which allows seamless connections to Alexa, Google Assistant and Siri. The video monitoring feature is also interesting, useful for checking pets when you’re away.

On the security front, Roborock has integrated UL Diamond data protection certification, a detail that may seem minor but which, given the presence of cameras and advanced smart features, is anything but irrelevant.

Battery life

Even in terms of autonomy the Roborock Saros 20 performs quite well. It includes a battery that, in real use, guarantees coverage more than adequate even in demanding scenarios.

In my case, on an area of about 100 square meters, setting maximum suction and a higher wash water level, it completed the entire cycle in about an hour and a half, using a little more than half of the available charge. And we’re talking about the most stressful condition possible, not an “eco” mode.

Translated into practical terms, this means that even larger homes aren’t a problem. It’s realistic to think it can cover areas approaching 200 square meters on a single charge, depending on the settings used and the environment’s complexity. And if the battery isn’t enough, the smart recharge system allows the robot to return to the base and automatically resume cleaning from the exact point it left off.

Selling price and considerations

The selling price of the Roborock Saros 20 is 1,499 euros but, via the box below, you can buy it on Amazon at 1,289 euros. So no, it isn’t exactly an inexpensive vacuum robot. But even if it’s a figure clearly not suitable for everyone, in my view it’s fairly in line with what has become the high-end market, for the brand and all its direct competitors.

The question is: is the asking price worth it? In my case, with three dogs and a garden, yes. Because it isn’t just a powerful vacuum robot, but a complete system that cleans really well and drastically reduces the time spent on daily cleaning.

It isn’t perfect; no robot is. But it’s one of the few that can really handle heavy dirt situations without becoming a daily management hassle.

If you’re looking for the best robot vacuum for a home with pets and challenging thresholds, the Roborock Saros 20 is today one of the most complete and technologically advanced solutions available on the Italian market.

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