Roborock Qrevo Curv 2 Flow 60-Day Review: A Solid First Step Into Roller Mops

This unit was purchased by VacuBots and is not sponsored by Roborock.

The Qrevo Curv 2 Flow is Roborock's first attempt at releasing a robot vacuum with a mop roller instead of spinning mop pads. We've been running the mid-tier unit through its paces for the last several months, and this is our 60-day review.

Specs

The Curv 2 Flow boasts up to 20,000 Pa of suction and comes with Roborock's anti-tangle DuoDivide main brush, two spinning side brushes and the SpiraFlow mop roller.

The Curv 2 Flow is quite thick, measuring 4.7 inches tall, making it difficult to get under most household furniture, including sofas and chairs.

The sleek, white Curv base station has been upgraded to wash the mop roller at up to 167 degrees Fahrenheit, an increase for the Curv lineup. The dock can also dry the mop roller at up to 131 degrees Fahrenheit to prevent bacteria and odors from developing.

Enter the SpiraFlow

Roborock says its extra-wide 270-millimeter SpiraFlow mop roller delivers 15 newtons of downward pressure (3.4 pounds), which is 2.5 times more mopping pressure than a traditional robot vacuum with spinning mops.

The roller itself spins at 220 rpm to help scrub away stubborn, sticky messes and can even extend outward, allowing it to clean within 10 millimeters of baseboards, walls and furniture.

Eight, fairly large, hydration points continuously wash the roller while its built-in scraper diverts dirty water and debris into the onboard dirty water reservoir. When the unit detects carpet, the roller automatically lifts 15 millimeters, and a thick, protective shield engages to prevent the mop from dampening the floor.

Unboxing and Setup

The Curv 2 Flow ships in a plain brown box with its multifunctional dock, internal cleaning tray, dirty water tank, clean water tank, pre-installed dust bag, plastic dust bag compartment cover, matching white power cord and product manual. No additional accessories, supplies or sample detergents are included in the basic retail package.

Mapping, App Setup and Technology

The Curv 2 Flow follows the same setup procedure as most other Roborock units. After you download the Roborock app and power on your device, you are required to hold down power and home to initiate the Wi-Fi setup procedure.

Once the unit is ready, it will pulsate blue, and you can pair it to your app. The Curv 2 Flow does have Bluetooth to facilitate the setup process but will use Wi-Fi for permanent control.

Mapping using its top-mounted LiDAR sensor is straightforward. The app prompts you to initiate a quick map, sending the unit to scan your home before returning to its base. A floor plan with room divisions is automatically generated. You can manually rename, merge, delete or reconfigure room spaces as needed.

In our experience, the quick map itself was fairly accurate, but the AI-generated room labeling was not. We had to manually divide rooms, rename rooms, change the direction of our wood flooring on the map, and set tiled rooms. Carpeted rooms were misidentified as tile.

The Roborock app offers multiple modes, including SmartPlan, vacuum followed by mop, vacuum and mop simultaneously, and customize. While there is a vacuum-only mode, a mop-only mode is not available.

Other app features include the ability to create a daily or weekly schedule, a do-not-disturb mode, and settings for carpet cleaning, floor cleaning, the dock and reactive obstacle avoidance.

This unit does not have the Adapt-Lift chassis feature that comes on the CurvX and has minimal threshold support at .79 inches. Thresholds must be marked on the map.

The Curv 2 Flow also features Roborock's "Hello Rocky" built-in voice assistant, full Matter 1.4 support (including support for rooms and battery levels), remote camera viewing and pin-and-go navigation.

Navigation and Obstacle Avoidance

The unit performed well on its first run. It navigated using Roborock's tight pathing algorithm making mostly straight lines on both carpet and hardwood. Coverage was good, and navigation from the base station to individual rooms functioned as expected.

The Curv 2 Flow relies on a hybrid setup of a single RGB camera with a structured light sensor to identify objects and depth. The onboard LED automatically activates in dim lighting so the camera can still function.

Roborock claims the Curv 2 Flow can detect up to 200 types of objects — about two-thirds as many as its Saros line — and can spot obstacles as small as 30 millimeters tall and 50 millimeters wide, including charging cables. Objects smaller than that, or flat items like paper and clothing, will not be detected.

Overall, we found this mostly held true. However, the unit failed to identify cables near the wall in some of our carpeted areas.

During our review period, the unit consistently bumped into wooden furniture legs, walls and doors. To protect delicate furniture and prevent scratching, we recommend adjusting the obstacle avoidance settings from the default "high coverage" mode to "less collision." This dramatically improved the Curv 2 Flow's obstacle avoidance performance.

If the system identifies a pet, it can actively throttle down its suction and brush speed to avoid startling it. However, we did not test this feature. The app also allows for live remote viewing and two-way audio to check in.

It detected carpeted mats on both wood and tile flooring, and identified wall-to-wall carpeted rooms after a first vacuum run. The initial quick map was continually refined after multiple full home cleanings that included both vacuuming and mopping. Navigation was rock solid from the start in cluttered rooms like our home office and game room.

No-go zones were automatically suggested, and after multiple rounds, the map became well-adjusted to our home.

Cleaning Performance, Battery Life and Charging

When it comes to suction, the Curv 2 Flow delivers impressive results across hard floors. Its massive up to 20,000 Pa of suction easily lifts surface dirt and pet hair and its anti-tangle DuoDivide main brush does an excellent job of preventing hair wrap.

However, carpet performance was poor. The Curv 2 Flow's main DuoDivide brush doesn't match the overall debris pickup performance on carpet or hardwood of the older DuoRoller brush featured on Roborock's S8 MaxV Ultra.

The SpiraFlow mop roller consistently handled wet messes as expected. Using its 15N of mopping pressure, it managed to mop up spilled coffee, sweet tea and soda with ease.

The Curv 2 Flow's upgraded ReactiveAI obstacle recognition also properly identified ketchup and mustard on our dark wood flooring and switched to mop-only mode before attempting cleanup. Side brushes and the main brush roller were lifted and the vacuum motor turned off.

Dried stains were handled in two passes, going both left to right and up and down. While some residue still ended up on the unit's wheels, the main brush did lift and the vacuum motor turned off.

The roller's ability to extend outward is a huge plus, allowing it to get closer to walls and under cabinets. However, results weren't perfect. The Curv 2 Flow frequently missed certain areas near furniture, doorways and baseboards.

The Curv 2 Flow's thicker chassis size also prevented the extending roller from thoroughly cleaning under our kitchen and bathroom cabinets, but it came closer than many other robot vacuums, including our Eufy Omni S2.

The unit features two side brushes. However, neither side brush extends, leaving corner cleaning disappointing.

The Curv 2 Flow has a 5,200 mAh lithium-ion battery, about average for the mid-tier price range, and a runtime of up to three and a half hours in quiet mode.

Higher suction modes and carpet boost drain the battery much faster. Based on our experience, it took around three and a half hours to charge from 15% to 100%.

Limitations, Maintenance and Quirks

Curv 2 Flow, like all robot vacuums, is not without some limitations and quirks.

The biggest missing feature on the Curv 2 Flow is automatic detergent dispensing. To use detergent, you'll need to manually add a capful of compatible solution to the clean water tank at each fill-up.

While we didn't find it to be a deal killer, it's just one more thing you need to remember if you have a busy lifestyle.

Curv 2 Flow also only has 8 hydration points. While they are larger that other mop rollers we've used, that's less overall points compared to other mop roller models that frequently have up to 12 or more. Because of this, the mop roller can become dry on longer cleaning cycles and streaking may occur on certain floor types especially light-colored flooring or tile.

Saturation levels were adequate on our wood flooring and left minimal streaking.

The onboard dustbin capacity on the Curv 2 Flow is 324 milliliters, roughly a 20% increase over the CurvX, allowing it to hold more debris before it needs to be emptied. The dust bag is also slightly larger at 2.5 liters. However, it's hindered by the storage area available in the compact Curv base station.

Even with the roomier dustbin, the Curv 2 Flow's filter easily became caked with debris and dust, including food particles like rice, due to the lack of a pre-screen filter. It will need to be cleaned regularly. The filter is washable, but we suggest giving it at least 24 hours to dry before reusing.

The onboard water reservoir was easy to remove and clean. Be careful with the multitude of tubes and rubber gaskets while cleaning, as they are easily removable.

We also found the unit to aggressively clean doorway entrances and thresholds even when they weren't selected as part of a zone or room clean.

Final Scores

Bottom Line

If your home is mostly hardwood or tile, the Curv 2 Flow could be the perfect robot vacuum for you. It’s a solid first attempt at a roller mop from Roborock and comes in an attractive package.

Curv 2 Flow’s strong mopping pressure, AI recognition and automated hot-water dock take the chore out of cleaning up tough, sticky spills, while the heavy-duty suction and tangle-free brush handle hair with ease.

For bare-floor households, the combination of increased scrubbing power and rock-solid navigation makes the Curv 2 Flow a highly capable, low-maintenance cleaning companion at a mid-tier price.

Pricing and Availability

The Roborock Qrevo Curv 2 Flow lists for $999 and is available on the Roborock Store, Amazon, and other retailers.