Where It Fits in the Lineup
Roborock makes a lot of robot vacuums. Understanding where any single model fits can feel like decoding a secret language. Here is the short version.
The company sells four main series. The Q series is the budget line. The S series sits in the mid-to-premium range and uses vibrating mop pads. The Qrevo series focuses on advanced mopping with spinning pads and self-cleaning docks. The Saros series is the new ultra-premium line with features like retractable LiDAR and, on one model, a robotic arm that moves obstacles out of the way (and the one that climbs stairs).
The Curv 2 Flow belongs to the Qrevo family but introduces something genuinely new: Roborock’s first roller mop. Most Qrevo models use dual spinning mop pads. The Curv 2 Flow replaces those pads with a 270mm roller that continuously washes itself with fresh water from onboard tanks. The roller approach borrows from competitors like Narwal and Dreame. Roborock adds its polished navigation and app experience on top.
At $999, the Curv 2 Flow sits in the upper-mid tier. Entry-level Qrevo models like the Qrevo S start around $350. The flagship Qrevo CurvX runs $1,500 with 22,000 Pa suction and hot water mopping. The Saros line pushes past $1,600. The Curv 2 Flow shipped in January 2026.
My Testing Context
I have been using Roborock vacuums for years. My previous robot was a QX Revo from Costco, one of the older Q series models with dual spinning mop pads. It served us well. It also had real limitations that became obvious the moment the Curv 2 Flow started its first run.
Our home has a mix of tile, hardwood, and area carpets. We live in the Northeast with an Australian Shepherd who sheds year-round. This winter brought heavy snow, which means sand and salt tracked in constantly on paws and boots. The Curv 2 Flow handled all of it without issue. The only surprise was water consumption.
The QX Revo uses 5,500 Pa of suction and spins its mop pads at 200 RPM. The dock handles water. The robot does not carry onboard water tanks for mopping. It picks up water from the dock, mops, and returns periodically for washing. This approach works. Floors get cleaned. The Curv 2 Flow just does it better.
The Curv 2 Flow works differently. It carries clean water onboard. Eight nozzles continuously feed fresh water to the roller during cleaning. A scraper removes dirty water into a separate onboard waste tank. The roller stays clean throughout the cycle instead of redistributing grime across your floor.
What I Actually Noticed
The suction difference hit me first. My Australian Shepherd has a thick double coat that sticks to everything. The Curv 2 Flow pulls more of his hair from carpets than the QX Revo did. You can see it in the difference on the floor after the first run.
The mopping difference was more dramatic. Our tile floor showed every flaw with the QX Revo. After it finished, you could still see streaks and smears. The floor looked damp, not clean. The Curv 2 Flow leaves it noticeably cleaner. Less smearing. No visible residue. The tile feels different underfoot.
The mopping difference was more dramatic. Our tile floor showed every flaw with the QX Revo.
The waste water tells the story. After a cleaning cycle, the Curv 2 Flow’s dirty water tank looks genuinely disgusting. Dark water. Visible grime. The roller was pulling dirt out that the spinning pads had just been moving around.
Trade-offs exist. We refill the dock’s water tanks more often than we did with the QX Revo. The QX Revo has a 5-liter clean water tank in the dock. Roborock does not publish the Curv 2 Flow’s dock tank capacity, which is frustrating. Based on refill frequency, I estimate it holds less. More importantly, the Curv 2 Flow uses water continuously throughout cleaning, pumping it through 8 nozzles to keep the roller wet. More water means better cleaning. It also means more refills.
The robot runs noticeably quieter. Navigation feels smarter. The dock takes up less floor space. These are nice bonuses on top of the core improvements.
How It Sees Your Home
The Curv 2 Flow uses what Roborock calls Reactive AI 2.0 for obstacle avoidance. This deserves explanation because it represents a real upgrade over older models.
Older Roborock robots like the QX Revo use Reactive Tech. This relies on sensors and basic algorithms to detect objects in the path. It works. It also bumps into things and gets confused by unusual obstacles.
Reactive AI 2.0 combines 3D structured light with an RGB camera. The robot actually sees objects, identifies what they are, and decides how to respond. It can recognize over 200 types of objects: shoes, cables, pet bowls, toys, and yes, pet waste. It works in daylight and darkness.
In practice, this means less prep work before cleaning. You do not need to pick up every cable or move every shoe. The robot spots them and routes around. It is not perfect. Extremely thin objects or unusual shapes can still cause problems. But it represents a meaningful improvement over bump-and-navigate approaches.
The camera also enables pet features. The robot can recognize cats and dogs, reduce suction to avoid startling them, take photos when it encounters them, and help you locate them while you are away. In practice, these features are inconsistent. I asked the robot to find my Australian Shepherd while he was lying in plain sight. It could not identify him. The pet recognition seems to work best with pets standing or moving. Treat these features as nice-to-have extras rather than reliable tools.
Privacy and Security
A robot with a camera rolling around your house raises obvious privacy questions. Roborock addresses this directly.
The Curv 2 Flow carries two third-party certifications for security
The camera is switched off by default. You have to manually enable it in the app settings. The Curv 2 Flow carries two third-party certifications for security: TUV Rheinland certification for ETSI EN 303 645 (the leading European cybersecurity standard for consumer IoT devices) and UL Security Capabilities Verified Diamond rating. These are not marketing badges. They represent independent audits of the device’s security practices.
If you never enable the camera, the robot still navigates perfectly using LiDAR alone. The camera-based features like pet recognition and video calling require opt-in. For privacy-conscious households, you get a fully functional vacuum and mop without ever activating the camera.
How It Performs
The Curv 2 Flow handles daily cleaning without supervision. The 20,000 Pa suction pulls debris from hard floors and carpets alike. For reference, the QX Revo delivers 5,500 Pa. That is nearly a 4x increase in raw suction power.
The DuoDivide brush system deserves attention. If you have ever spent 10 minutes cutting hair off a vacuum brush with scissors, this design exists specifically for you.
Traditional vacuum brushes are one continuous roller. Hair wraps around them. It tangles. It builds up. You have to cut it off manually. The DuoDivide brush is split down the middle with a gap between the two halves. Hair gets guided toward that center gap and sucked directly into the dustbin before it can wrap around anything. Roborock claims 0% hair tangling rate and 100% hair removal rate. In my testing with an Australian Shepherd, the brush stayed clean after weeks of daily use.
Roborock claims 0% hair tangling rate and 100% hair removal rate. In my testing with an Australian Shepherd, the brush stayed clean after weeks of daily use.
Navigation is reliable. The robot maps rooms accurately on the first run using PreciSense LiDAR. It creates detailed 3D maps in real time and plans efficient routes. Open floor plans that confuse other robots pose no problem here. Multi-floor mapping works well across up to four levels.
Carpet handling is smart. When the robot detects carpet, the roller mop lifts 15mm. A roller shield deploys underneath to create physical separation. This keeps the carpet dry while allowing the robot to vacuum it. No manual intervention required.
Battery life covers most homes comfortably. The 5,200mAh battery delivers about 228 minutes in efficient modes. A 1,000 square foot space takes roughly 40 minutes and uses about 20% battery. Deep clean modes with double passes need 2-3 hours but deliver dramatically better results.
Where It Excels
The roller mop sets this robot apart. This is worth understanding because it represents a fundamentally different approach to robot mopping.
Traditional robot mops use spinning pads. The pads pick up water from the dock, spin against the floor, and return for washing. The problem: they spread dirty water around until they return to base. Your floor gets damp. It does not necessarily get clean.
The Curv 2 Flow’s 270mm roller receives fresh water continuously from eight hydration nozzles during cleaning. A precision scraper removes dirty water into a separate onboard waste tank. The roller stays clean throughout the cycle. This is why users report dirty waste water even from floors that looked clean. The robot is actually removing grime instead of redistributing it.
The roller applies 15N of pressure at up to 220 RPM. That is 2.5x more pressure than the original Qrevo Curv. Combined with the continuous fresh water, it handles sticky messes like coffee, ketchup, and muddy paw prints in a single pass.
When the robot returns to dock, the roller gets a deep clean. The dock washes it with 75 degrees Celsius hot water, rolling it in both directions to loosen stubborn dirt, food residue, and greasy stains. Roborock claims 99% bacteria removal rate, verified by TUV. After washing, warm air dries the roller to prevent mold and odors.
Edge cleaning is genuinely good. The Edge-Adaptive Roller Mop extends to clean within 10mm of walls, baseboards, and furniture corners, with a maximum extension of 43mm (about 1.7 inches). Roborock claims 100% edge sweeping coverage. In practice, it reaches areas that spinning-pad robots miss entirely.
At 63 dB in balanced mode, you can take phone calls while it cleans nearby. The dock runs louder during mop drying but stays under 60 dB.
One Real Limitation: Cabinet Clearance
The Curv 2 Flow measures 3.8 inches at its lowest point, not counting the LiDAR tower on top. My kitchen cabinets sit 3.5 inches off the floor. The robot cannot get under them. Even if clearance were not an issue, the roller only extends a maximum of 43mm (about 1.7 inches) during edge cleaning. My cabinets have a 3-inch floor depth. The roller comes up well short. If your kitchen has a similar setup, plan to sweep that zone manually.
App Experience
I have been using Roborock vacuums long enough that the app feels second nature. New users should find setup straightforward.
When you first run the vacuum, you have options. You can just let it clean and it will vacuum and mop while building a map. Or you can do a quick mapping run first. I mapped about 1,000 square feet in under 12 minutes. Larger homes will take longer.
Scheduling works well once you understand the system. I run room-by-room cleaning during the day and routines at night. Routines take some setup but offer real flexibility. You can define zones within rooms. In my case, I clean the kitchen floor and then the path my dog takes back and forth to the door. Running this at night means fresh floors every morning.
This model gives you more control over water usage. If you clean frequently, dial back the water flow and use a simpler route pattern. You will refill the tank less often.
Voice Control: Not Ready Yet
Voice control sounds good on paper. In practice, mine responds about 15% of the time when the robot is idle and almost never when it is running. It is not a dealbreaker but do not buy this robot expecting hands-free commands. A software update could fix it. Right now, use the app.
Maintenance
Maintenance is minimal but not zero. You will need replacement dust bags periodically. Too bad Roborock still uses bags instead of a reusable canister system. Replacement parts like rollers and brushes last months before needing attention. The dock tray needs occasional cleaning, though this version simplifies the process with fewer pieces to remove compared to my previous model.
Do not flip the robot upside down with the dirty water tank installed. The app warns you. I ignored it. Dirty water leaked behind the tank and into the chassis. It also leaves a sooty residue that builds up if you miss it. Pull the tank before flipping it. Then wipe down the cavity while you are in there.
QX Revo vs Curv 2 Flow: Key Specs
| Feature | QX Revo (Costco) | Qrevo Curv 2 Flow |
|---|---|---|
| Suction Power | 5,500 Pa | 20,000 Pa |
| Mop Type | Dual spinning pads | Self-cleaning roller |
| Mop Lift Height | 7mm | 15mm |
| Onboard Water Tanks | No (dock refills robot) | Yes (continuous feed) |
| Main Brush | Single rubber | DuoDivide anti-tangle |
| Obstacle Avoidance | Reactive Tech (sensors) | Reactive AI 2.0 (camera + 3D) |
| Height (lowest point) | 3.15 inches | 3.8 inches |
| Price (MSRP) | ~$700 | $999 |
Why You Refill More Often
If you are coming from a QX Revo or similar spinning-pad robot, the increased water use may catch you off guard. Here is why it happens.
The QX Revo’s dock holds 5 liters of clean water. The robot visits the dock periodically to wet its spinning pads. Between dock visits, it mops with whatever water it picked up. This approach conserves water while still getting floors clean.
The Curv 2 Flow uses water continuously. Eight nozzles feed fresh water to the roller throughout cleaning. The roller never mops with dirty water because the scraper removes waste into the onboard tank in real time. More water consumption is the direct trade-off for that continuous fresh water delivery.
Roborock does not publish the Curv 2 Flow’s dock water tank capacity, which makes direct comparison difficult. Based on how often we refill, I estimate it holds less than the QX Revo’s 5 liters. Regardless, the continuous water flow means you will refill more often even if the tanks were identical.
Wrapping Up
The Curv 2 Flow is a genuine leap forward in home floor cleaning. Twenty thousand pascals of suction, a self-cleaning roller mop, and navigation smart enough to handle a full house without supervision. The DuoDivide brush tackles pet hair without tangling. The dock washes and dries the roller automatically. The app gives you full control without burying you in menus.
Every run proves the technology works. The dirty water tank tells the story. What comes out of your floors after the first cycle will surprise you — and that is exactly the point.
Every run proves the technology works. The dirty water tank tells the story. What comes out of your floors after the first cycle will surprise you — and that is exactly the point.
At $999 you are buying one of the best roller mop systems available. It is a first-generation product with first-generation pricing. That price will come down. The clean floors are immediate.
The Curv 2 Flow is the robot vacuum upgrade most households have been waiting for.
The Bottom Line
The Curv 2 Flow is not a perfect robot. It cannot squeeze under low kitchen cabinets, voice control is more wishful thinking than working feature, and you will refill the water tank more than you expected. None of that is unusual for a first-generation product pushing new technology.
What it does right is harder to ignore. The roller mop is a genuine step forward. Dirty floors get clean instead of just damp. The waste tank tells the whole story after every run.
At $999 you are paying to be early. Prices on new robot vacuum tech drop fast. If you can wait, you will probably pay less in a year. If you cannot, you will not regret it.
