Robot vacuums have come a long way and can now clean into corners, along baseboards, and reach nooks and crannies. However, most of them come with a top-mounted LiDAR dome, which prevents them from cleaning under low furniture. The Roborock Qrevo Slim, solves this problem, thanks to an advanced navigation that removes the need for a top-mounted dome.

In essence, it’s very similar to the Roborock Qrevo Master, offering most of the same features. These include hot water mop washing, a dual roller brush, as well as a robotic side brush and an extending mop pad. It also comes with a self-cleaning dock, helping to minimize maintenance. It’s different from the Qrevo Curv, though. The latter comes with an innovative DuoDivide brush and a modern-looking dock, but still uses a LiDAR dome for navigation.

The Qrevo Slim is a great option if you’re looking for a robovac that cleans under low furniture. It packs advanced cleaning features, making it almost as good as Roborock’s flagship, the S8 MaxV Ultra. In this detailed review, let’s see how it compares to other models, and whether it’s worth buying.

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Basic but modern design

The Qrevo Slim looks very similar to the rest of the Qrevo lineup, but comes exclusively in black. The dock remains vertical, with both water tanks placed at the top and directly accessible. A removable panel at the front discreetly conceals the dust bin. Both the dock and the robot feature small patterned stars, highlighting the Roborock Qrevo Slim’s PreciSense navigation system. The lower part of the dock houses the baseplate, which comes with built-in scrapers that keep it clean. Thankfully, you can also remove the washboard and wash it in the sink for added convenience.

The robot looks slightly different from most other ones. Indeed, while it keeps a circular shape, it loses the top LiDAR dome. This makes it thinner than other models, as it only measures 8.2cm. To navigate, it uses the new PreciSense system. The combination of LiDAR and ToF sensors on both sides generates an accurate 3D map of its surroundings. It also comes with a built-in RGB camera, allowing it to safely detect and avoid obstacles.

On the underside, the Qrevo Slim features a two rotating mop pads, including an extending one. It also features the DuoRoller brush, combining two liftable rollers to capture dirt efficiently. In addition, its FlexiArm side brush extends to clean corners and tight areas.

Great app packed with features

When setting up the Roborock Qrevo Slim, it starts by mapping your house. Its sensors allow it to identify and separate rooms autonomously. You can edit the map to adjust the rooms to your liking. In addition, you can create no-go zones, and even adjust the floor surface or place the furniture on the map. The Qrevo Slim can save four different maps, and automatically recognizes which one to use based on the environment.

The SmartPlan mode lets the robot intelligently adjust the cleaning strategy. You can also take a personal approach by adjusting the suction power, mop dampness, and even the room cleaning sequence. These settings can be globally or room-specific, useful to clean busy rooms more thoroughly than sleeping areas.

The app also allows you to customize plenty of advanced options. For example, you can set the robot to clean along the floor direction or automatically re-mop dirty areas. Similarly, depending on your preferences, the robot can lift its mop pads when encountering carpets, avoid them, or even clean them with wet mop pads. Similarly, you adjust the mop washing water temperature, their drying duration, and how often to wash them. In addition, you can set off-peak charging hours, which helps save a few bucks by charging the robot when energy is cheaper

The Roborock Qrevo Slim also comes with an onboard camera. It serves for both remote home monitoring with two-way audio, but also to take pictures of potential obstacles.

To interact with the robovac, you can use Google Assistant and Alexa. In addition, the built-in Hello Rocky voice assistant works quite well and understands most commands. However, it’s a shame you can’t ask it to clean two rooms in a single command.

Powerful vacuuming performance

The Roborock Qrevo Slim comes with an 11,000Pa suction power, which is slightly higher than the Qrevo Master. This is more than enough to tackle dirt and dust on hard floors, but also on carpets. The dual roller approach allows the robot to capture dirt more efficiently and reach deeper into grouts. In addition, the FlexiArm robotic brush automatically extends to clean corners, along baseboards, and even furniture legs.

It’s also particularly efficient on carpets, as the combination of strong suction power and the DuoRoller brush make it a winning combo. Also, the Qrevo Slim automatically increases its suction power, helping it clean carpets more thoroughly.

Regardless of your cleaning needs, the Qrevo Slim can easily tackle dirt and leave your floors clean, free of dirt and dust. However, I’ve noticed hair often gets tangled around the roller and brush, which can block them and impact performance.

Strong mopping results

The Roborock Qrevo Slim comes with two rotating and liftable mop pads, including an extending one to clean along baseboards and in corners. The dock washes both mop pads before, during, and after the cycle, helping them stay clean and warm, providing better results.

Also, since the robot comes with a small onboard water tank, it continuously dampens the mop pads while cleaning. This ensures the mops don’t run dry, while also minimizing how often the robovac needs to return to the dock.

The cleaning results are excellent, with the Qrevo Slim removing stains and leaving floors sparkling. It can tackle dried and tough stains with minimal effort, thanks to the pad pressure and heated water. For optimal results, you can even put some detergent in the tank, which is ideal to remove dried and greasy stains. It’s unfortunate there’s no dedicated detergent tank line on the Dreame L40 Ultra, though, as this would have prevented you from doing it manually. The extending mop also does a good job at reaching into corners and cleaning along baseboards.

For the hardest stains, the robot can automatically re-mop areas it recognizes as dirty. With this, you’re sure your floors are left completely clean, even when they’re particularly dirty.

Improvable navigation system

The Roborock Qrevo Slim comes with an innovative navigation system. Instead of relying on the traditional LiDAR dome, it uses a 3D time of flight system with a dual light solid-state LiDAR. This allows it to be significantly thinner than other models, enabling it to clean under low furniture.

Roborock claims this improves its navigational abilities, even in challenging environments. In real life, and after testing it for about a month, my opinion is a bit more mixed. It does a good job finding its way around the house, but it’s also gotten lost several times or took very usual paths to reach its destination. This is not what I’m used to with Roborock products, and I have to admit the traditional LiDAR dome is globally better for navigation compared to the new PreciSense system. In all fairness, the robot only got completely stuck once, and this was due to a jammed side brush rather than navigational issues. Otherwise, the Qrevo Slim managed to find its way home autonomously, despite struggling with how to get there. Thankfully, Roborock can continue to improve the navigation system over time with over the air updates.

Obstacle recognition is quite reliable, thanks to the built-in RGB camera. The latter detects obstacles, including small ones like cables. The robot gets relatively close to them, but still manages to avoid them efficiently. It even takes pictures of obstacles and plots them on the map, allowing you to see what blocked its way.

Acceptable noise levels and battery life

The Qrevo Slim is relatively quiet, which means you can use it even if you’re at home. It won’t bother you if you’re working or watching TV, especially on the lowest settings. I find it to be a bit louder than the Roborock Qrevo Pro, but this is normal given it has a stronger suction power.

The dock does make a bit of noise, especially when emptying the dust bin or washing the mop. Thankfully, this process doesn’t last too long. Also, you can use Roborock’s Do not disturb mode, which allows you to deactivate some of the noisiest features during your preferred timeframes.

As for the battery life, the Qrevo Slim can clean about 150 square meters on a single charge. Of course, this depends on the cleaning settings, but it’s built to tackle large areas without needing to recharge. Should the battery run low, it can automatically return to its dock to recharge before resuming its task.

Easy to maintain

The Roborock Qrevo Slim is relatively easy to maintain, especially the docking station. Indeed, its large water tanks and dust bag mean you don’t have to worry about them too often. Also, the built-in scrapers in the baseplate scrape dirt during mop washing, ensuring it stays relatively clean. Roborock has also worked on a dock self cleaning new mode you can launch from the app. Unlike other ones, it doesn’t require you to scrub it manually, and the entire process is automated. You can still clean it manually, and the detachable design means you can remove it and easily wash it in the sink.

The bristleless rollers minimize hair entanglements, but they still need some manual cleaning about once a week to remove trapped debris. The side brush is particularly prone to entanglements, so you’ll have to manually remove them every few days, especially if you have pets at home.

As for the mop pads, they require minimal maintenance. The dock washes them using hot water and dries them with hot air, minimizing the spread of bacteria and mildew that can cause bad odors. However, I recommend machine washing them on high temperature about once a month. Indeed, unlike the S8 MaxV Ultra, the Qrevo lineup doesn’t use a dedicated high-speed brush to clean the mop, meaning it’s not always thoroughly cleaned.

Is the Roborock Qrevo Slim the right robovac for you?

The Roborock Qrevo Slim is a fantastic choice if your primary concern is cleaning under low furniture, thanks to its slim profile and innovative PreciSense navigation system. It excels in this area where most robot vacuums with bulky LiDAR domes fail. Additionally, its advanced features, such as hot water mop washing, extending mop pad for edge cleaning, robotic side arm, and powerful 11,000 Pa suction, make it a capable and versatile cleaning companion.

However, for the majority of users, the Roborock Qrevo Master may be the better choice. It comes at a slightly lower price point, offers a proven and more reliable navigation system with its traditional LiDAR dome, and still provides excellent cleaning performance. While the Qrevo Slim is ideal for specific scenarios like tackling hard-to-reach spaces, the Qrevo Master delivers better overall value, making it a more practical choice for homes without significant low-clearance furniture.

Ultimately, the decision comes down to your specific needs. If you’ve struggled with cleaning under low furniture in the past, the Qrevo Slim is worth the investment. Otherwise, the Qrevo Master offers a more balanced package at a friendlier price.

Pros	Cons
Cleaning performance	Improvable navigation
App features	Average build quality
Edge and corner cleaning	No automatic detergent dispensing
Advanced functionality (hot water, baseboard cleaning)	Expensive
Slim design

Q&A