The Eufy OMNI S2 is the brand’s newest flagship robot vacuum and mop combo that made its debut at CES 2026 during a series of media events. After getting an early look at the model and reviewing its specifications, we’re particularly interested in whether the S2 can address some of the performance gaps observed in Eufy’s earlier S Series flagship.
The Eufy Omni S2 is a flagship robot vacuum and mop combo designed to deliver powerful automated cleaning with upgraded hardware and AI navigation. It features AeroTurbo 2.0 suction rated up to 30,000 Pa with multi-cyclone airflow for longer-lasting suction, an extending side brush for improved corner cleaning, and detangle brush technology designed to reduce hair wrap. For mopping, the HydroJet 2.0 self-cleaning roller mop spins at high speed, applies roughly 15 N of downward pressure, continuously washes itself with clean water, and extends toward edges while lifting to avoid carpets. Navigation is powered by CleanMind AI with 3D MatrixEye 2.0 vision and ToF sensors, enabling 3D mapping, detection of 200+ obstacles, and adaptive cleaning based on room type and mess detection. The robot can cross thresholds up to 42 mm and automatically adjust for carpets up to about 2 in thick. It pairs with a UniClean automated dock that empties debris, washes the mop with hot water, dries it with hot air, refills water, and recharges the battery, while also producing disinfecting electrolyzed water and offering a built-in aromatherapy system with multiple scents. The Omni S2 also appears aimed at addressing several user concerns seen with its predecessor, including weak carpet performance, difficulty navigating thick rugs, and hair tangling on the main brush. The redesigned brush system, higher suction rating, and chassis-lifting capability are intended to improve cleaning on carpets and prevent the robot from getting stuck on plush rugs.
Auto Empty Station: Self Empties Debris | Washes Mop Roller | Washes Mop Roller with Hot Water | Dries Mop Roller | Dries Mop Roller with Heated Air| Self Cleaning | Dirty Water Sensor
Mopping: Lifts Mop Roller on Carpets | Extending Mop Roller for Hard to Reach Areas
Hardware: Auto Extending Side Brush for Hard to Reach Areas |Up to 42mm Threshold Crossing | Removes Hair from Brush Roll
Performance: Carpet Boost Settings | Stain Detect
Mapping / Navigation: Multi Level Maps | Virtual Barriers and No Go Zones
Obstacle Avoidance: 200 Objects Recognized
Controls: Third-Party Voice Control Options
| Scores | Eufy Omni S2 | Average Robot Vacuum Tested |
|---|---|---|
| Vacuum Wars Overall | TBD | 2.58 |
| Features | TBD | 3.28 |
| Mopping Performance | TBD | 2.39 |
| Obstacle Avoidance | TBD | 3.39 |
| Pet | TBD | 3.42 |
| Navigation | TBD | 3.21 |
| Battery | TBD | 2.56 |
| Performance | TBD | 3.56 |
| Official Battery Life: 180 Minutes | Navigation Type: 3D ToF Sensor |
| Official Suction Power: 30000 Pa | Dust Bin Size: 350ml |
| Obstacle Avoidance Type: 3D ToF Sensor, Single Camera, & LED | Objects Recognized: 200 |
| Multi Level Maps: Yes | Virtual Barriers: Yes |
| Detergent Capacity: unknown | Disposable Bag: 2.5L |
We reviewed the S2’s predecessor, the OMNI S1 Pro, and we were impressed with how it performed with obstacle avoidance and its mopping abilities, but we weren’t happy with how it behaved on carpets, so much so that we didn’t recommend it for homes with a lot of carpets or rugs. The new OMNI S2 specs seem to be focused on that exact problem, which we’ll go into in a moment. We’ll also briefly talk about why our official review for this model has been delayed.
How Vacuum Wars Tests Robot Vacuums: Step into the world of Vacuum Wars, where real-world tests, straight-forward reviews, and no sponsored products redefine robot vacuum evaluations.
Hardware and Mopping Upgrades: HydroJet 2.0
The S2 comes with the second-generation HydroJet 2.0 roller mop, which has a few more features than its predecessor. The HydroJet continuously washes itself with clean water and scrapes off used water into a dirty water tank, a design that prevents dirty water from being left behind and is extra good for processing liquid spills.
Compared to the S1, the S2 version has greater downward pressure, moving from 10N on the S1 Pro up to 15N on the OMNI S2. It also spins at a higher speed, jumping from 170 RPM to 240 RPM. Whether that makes it a better mop remains to be seen.
One major improvement for mixed-flooring homes is the mop lifting capability; the roller itself lifts 1.1 inches (approximately 28mm), which is a significant increase over the 0.5-inch (13mm) lift on the S1 Pro, and allows the S2 to vacuum carpets without getting them wet.
Another really important hardware change is that the S2’s roller extends to the side, which should improve coverage along the edges of walls and furniture.
See also: How Vacuum Wars Tests Robot Vacuum Mops
Vacuuming Performance and Hair Management
As far as vacuuming upgrades, the S2 introduces an extending side brush to sweep debris out of corners, something that the S1 wasn’t able to do.
Also, the main brush is now designed with a gap in the middle that retracts to release hair that might otherwise wrap around the brush.
This is an interesting change because the original S1 really did not perform well when it came to hair management in our tests. On the S1 Pro, 2.5-inch pet hair pickup was only 65% compared to the 82% average, and it struggled with long hair, leaving 26% tangled against a 21% average. So, this could be a real improvement if it holds up during testing.
Eufy advertises a multi-cyclone airflow feature that can remove finer particles and keep filters from clogging, which can supposedly keep suction higher for longer.
The S2 is advertised as having 30,000 Pa of official suction, which is almost three times higher than the 8,000 Pa found on the S1 Pro. Higher official suction numbers don’t always mean better vacuuming, but a jump this big could have an impact.
The S2 also has a fragrance-dispensing module with three different scents to choose from—Citrus and Basil, Bamboo and Sage, or Bergamot and Lychee—which is a nice extra feature.
Solving the Carpet Problem: Chassis Lifting
The S2 has a threshold climbing ability of 1.38 inches (35mm) on a single tier, compared to the 20mm on the S1 Pro. Double-tiered climbing can even reach up to 1.65 inches (42mm).
In addition to mop lifting and threshold climbing, the S2’s whole chassis can lift automatically, supposedly allowing it to clean high-pile carpets that are up to 2 inches (5cm) thick.
One of our biggest criticisms of the S1 was that it repeatedly got stuck on higher-pile rugs, and it was such a problem that we even recommended placing no-go zones around them. The original OMNI S1 also struggled to vacuum deeply into carpets, receiving an extremely low score of 61% in our carpet deep clean test, well below the 78% average. So, if the new S2 is able to navigate plush carpets and clean them effectively, that would represent a meaningful improvement over the OMNI S1 Pro.
Navigation and Intelligent Features
As far as navigation and intelligence goes, the Eufy S2 is equipped with embedded 3D Time-of-Flight sensors to route the house and create a 3D map. It also uses MatrixEye 2.0, a camera-based system which can help the robot identify and avoid objects that are at least 1 cm (0.4 in) tall.
According to Eufy, it can also identify different types of messes and tailor its cleaning strategy accordingly. The S2 is also programmed to avoid rug tassels and supposedly avoids rugs altogether if they are less than half a centimeter thick, which would prevent the vacuum from getting caught up on very lightweight mats.
The Base Station and Water Sanitation
The S2’s base station is similar to the S1 with a couple of changes. It’s still pretty tall, which is a design choice that makes it easier to reach water tanks and the LCD controls without having to bend over it. A big shift from the S1 is that the S2’s base electrolyzes the water used for mopping and mop washing, whereas the S1 Pro used ozonated water.
Electrolyzing water means passing regular water through an electrical process to make it mildly disinfecting. While that doesn’t directly increase cleaning power the way detergent does, it can help to reduce bacteria and keep the mop roller cleaner.
Apart from that, the base station does all the automations you would expect at this price tier: washing the mop with hot water, drying it with hot air, and collecting the dirty water and debris from the robot. It also has intelligent dirt detection, which can trigger a second cleaning if the used water is very dirty, and it supports fast charging.
Top 20 Robot Vacuums
Vacuum Wars’ always up-to-date rankings of the best robot vacuums. Because we purchase every unit ourselves, each recommendation is built on hands-on data. Our work now spans more than 150 models, giving us a deep benchmark for judging cleaning power, navigation smarts, battery life, and advanced features such as obstacle avoidance and mopping.
Why the Delay?
From these specs, it looks like the S2 is addressing the biggest complaints we had about its predecessor. So, it’ll be interesting to see how the S2 does in our tests. We purchase all of our robots ourselves, which means that we’re only able to receive a unit when it becomes widely available.
As it happens, Eufy paused their launch of the S2, which was scheduled for an early January release. Users on Reddit reportedly received an email from Eufy announcing a recall of the models purchased during the pre-order phase, which they said was in order to address a hardware issue. We don’t know what the issue was, but when we can get the OMNI S2 into our studio, we’ll put it through our series of independent tests to see how the robot performs in practice.
Check back here on this channel for our official unsponsored review of the Eufy OMNI S2. You can also check out all of our current favorite robots on our Top 20 Robot Vacuums list.
Eufy OMNI S-Series: Generation Comparison
| Feature | OMNI S1 Pro | OMNI S2 (New) |
| Mop System | HydroJet | HydroJet 2.0 |
| Downforce Pressure | 10N | 15N |
| Roller Mop Speed | 170 RPM | 240 RPM |
| Mop Lifting Height | 0.5 in (13mm) | 1.1 in (28mm) |
| Official Suction | 8,000Pa | 30,000Pa |
| Max Threshold | 20mm | 35mm (up to 42mm) |
| Chassis Lifting | No | Yes (up to 5cm) |
| Water Sanitation | Ozonated Water | Electrolyzed Water |
| Deep Clean Score | 61% (Below Avg) | Pending Testing |
| Hair Tangle Rate | 26% (Above Avg) | Pending Testing |
Eufy Robot Vacuum Buyers Guide 2026
We break down the key differences across Eufy’s robot vacuum lineup to help you decide which features are worth the upgrade—and which ones you can skip. From affordable basics to advanced models with smart navigation and self-emptying bins, we highlight the need-to-know details so you can find the best Eufy for your home and budget. See the Guide
