After a slightly bumpy start because of a delayed lunch, we finally secured the new Eufy Omni S2 and brought it into our studio. Over the last few weeks, we have put it through our rigorous series of studio evaluations to see exactly how this brand-new flagship handles real-world messes. In this review, we will break down the genuine pros and cons of Eufy’s premium offering, exploring its engineering advancements and revealing where it ultimately stands on our Top 20 Robot Vacuum list.
Vacuum Wars tests robot vacuums using a rigorous 100+ point inspection process. All products are purchased independently and reviewed without sponsorships of any kind, making our results some of the most trusted in the industry.
The Quick Verdict: Eufy Omni S2
The Eufy Omni S2 is a premium flagship robot vacuum and mop combo that successfully fixes the carpet-cleaning issues of its predecessor. With industry-leading obstacle avoidance and robust suction, it is an exceptional option for busy homes with mixed flooring, though a drop in raw mopping stain performance means it isn’t a one-size-fits-all solution.
Best For
- Homes with a mix of thick carpets and hard floors
- Pet owners dealing with heavy hair shedding
- Busy households requiring top-tier, completely hands-off obstacle avoidance
Pros
- Exceptional 87% carpet deep-cleaning sand pickup
- Flawless 24/24 perfect score in our studio obstacle avoidance tests
- Zero hair wrap thanks to the split DuoSpiral main brush design
Not Ideal For
- Homes consisting almost entirely of hard floors with stubborn, dried-on stains
- Massive residential layouts that require maximum single-charge battery range
- Layouts with high, complex room dividers or deep sliding door tracks
Cons
- Mopping stain score dropped 20% below our studio average
- Slower navigation efficiency limits its calculated square footage per charge
- Struggled to consistently clear 32mm thresholds in physical trials
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The Eufy Omni S2 is Eufy’s flagship robot vacuum and mop, pairing its AeroTurbo 2.0 vacuum system with 30,000Pa of suction, a DuoSpiral split main brush, an extending side brush, and the HyperStream 2.0 self-cleaning roller mop. In testing, it excelled on carpets, removing 87% of embedded sand compared to the S1’s 61%, while lifting more than 88% of flattened pet hair from carpet. Its anti-tangle brush design also achieved a perfect score, with no hair wrapping during the 7-inch hair test. Obstacle avoidance was another standout, earning a flawless 24 out of 24 by avoiding every object in both standard and torture tests. The roller mop spins at 240 RPM, applies 15N of downward pressure, lifts 28mm over carpet, and is supported by the Uniclean dock, which washes the roller with 140°F water, dries it with 131°F hot air, auto-dispenses detergent, fast charges the robot, and stores up to 68 days of debris. Downsides include below-average mopping stain performance with an 82-point score, reduced water output, lower-than-average navigation efficiency and estimated square footage per charge, some fine debris scattering on hard floors, inconsistent 32mm threshold climbing, and no live camera viewing despite the onboard camera. See additional info
Price as of July 1, 2026
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 | 4.15 | 2.58 |
| Features | 4.06 | 3.28 |
| Mopping Performance | 2.80 | 2.39 |
| Obstacle Avoidance | 4.90 | 3.29 |
| Pet | 4.71 | 3.42 |
| Navigation | 2.93 | 3.05 |
| Battery | 1.93 | 2.17 |
| Performance | 4.26 | 3.56 |
| Official Battery Life: 180 Minutes | Navigation Type: Embedded 3D ToF Sensor |
| Official Suction Power: 30000 Pa | Dust Bin Size: 330ml |
| Obstacle Avoidance Type: 3D ToF Sensor, Single Camera, & LED | Objects Recognized: 200 |
| Multi Level Maps: Yes | Virtual Barriers: Yes |
| Detergent Capacity: 330ml | Disposable Bag: 2.5L |
The Omni S2 is a vacuum and mop combo utilizing a roller-style mop paired with a highly automated, multifunctional base station. Positioned at the top of Eufy’s current floorcare lineup, it carries a premium price tag to match its flagship status. This model directly succeeds last year’s S1 Pro (see our review), which blew us away with its hard floor mopping performance but struggled with carpet-based pickup and navigating over thicker pile rugs.
The Omni S2 did a great job correcting those carpet shortcomings through a redesigned brush and advanced chassis lifting.
Carpet and Vacuuming Performance Upgrades
Vacuuming on this model is exceptional. Powered by Eufy’s AeroTurbo 2.0 technology, the S2 has an official suction rating of 30,000 Pascals, backed by a sealed five-layer filtration system that prevents fine debris from escaping into the air during a run.
More importantly, the mechanical chassis lifting mechanism is more advanced than its predecessor. Eufy claims the S2 can vacuum carpets up to two inches thick, providing the mobility on plush rugs that the S1 struggled with.
And it did a good job in our carpet deep clean test. In this test, we embed a precise amount of sand into medium-pile carpet and calculate the percentage the vacuum could remove. While the older S1 only managed a disappointing 61%, the new Omni S2 surged ahead by a wide margin, pulling up 87% of the sand—a score that sits comfortably above our current studio average of 78%.
Studio Test Snapshot: Flattened Pet Hair Pickup
The story was much the same when it came to pet hair pickup on carpet. For this test, we press two-and-a-half-inch hair strands into the carpet fibers to replicate real-world conditions. The S2 retrieved 88.5% of the hair, easily outperforming both the studio baseline and the previous generation.
One driver for this leap in performance is the new brush system. The Omni S2 uses dual side brushes, one with an articulating arm that extends to sweep debris out from deep corners. Beneath the chassis, Eufy introduces the DuoSpiral main brush—a split-roller system featuring a distinct center gap designed to channel hair into the suction port instead of allowing it to wind around the roller.
Studio Test Snapshot: 7-Inch Hair Tangle Rate
This mechanical design worked flawlessly during our 7-inch hair tangle evaluation, yielding a perfect 0% tangle metric, compared to the S1’s average wrap rate of 26%.
General debris pickup on both hard floors and carpets proved reliable across a range of particle sizes. We did observe minor scattering of finer particles on hard surfaces during the initial pass due to the rotational speed of the side brushes, though it recovered the stray debris on the second pass.
As an added luxury feature, the chassis houses an integrated fragrance dispenser that accepts specialized cartridges, offering three scent options to freshen the air while cleaning.
Vacuuming Performance Metrics: Studio Snapshot
| Test | Eufy Omni S2 | Eufy Omni S1 | Studio Average |
| Carpet Deep Clean Test | 87.0% | 61.0% | 78.0% |
| Flattened Pet Hair Pickup | 88.5% | 65.0% | 82.2% |
| Hair Wrap Comparison | 0.0% (No Wrap) | 26.0% Wrap | 26.0% Wrap |
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.
Flawless Obstacle Avoidance
One of the most impressive milestones achieved by the Omni S2 lies within its navigation and obstacle avoidance suite. Marketing under the name 3D MatrixEye 2.0, this system pairs advanced 3D Time-of-Flight (ToF) sensors with a single front-facing camera, supported by an automatic LED light matrix for low-light tracking.
Eufy states that the AI-powered camera recognizes over 200 distinct household items. Its 3D environmental mapping can tailor cleaning paths based on specific room categories.
When subjected to our standard obstacle course and our high-difficulty torture test, the Omni S2 delivered a perfect score, successfully navigating around all 24 test objects without a single collision. To put this in perspective, the only other robot vacuum in our testing history to achieve a perfect 24-out-of-24 score is the Roborock Saros 10R (see our review).
Studio Test Snapshot: Obstacle Avoidance (Objects Cleared)
- Eufy Omni S2: 24 / 24 Perfect Score
- Eufy Omni S1: 22 / 24
- Studio Average: 16 / 24
See also: How Vacuum Wars Tests Obstacle Avoidance
The HyperStream 2.0 Roller Mop
The Omni S2 uses the next generation HyperStream 2.0 roller mop, a continuous self-cleaning design that constantly applies fresh water directly onto the spinning roller. At the same time it scrapes used water into an on-board dirty water tank. This design is great at handling wet spills compared to dual spinning pads or vibrating flat pads, as it actually removes liquid messes from your floors rather than spreading them along the surface.
The engineering upgrades are clear on paper: rotational speed has been bumped to 240 RPM, and downward scrubbing force has risen to 15 Newtons. Additionally, the entire roller can lift 28 mm when the robot detects carpet. This allows the S2 to manage mixed-flooring environments in a single cleaning run, though users seeking total carpet protection can still program the vacuum to avoid rugs and carpets entirely through the app.
Multifunctional UniClean Base Station
Complementing the robot is the high-profile UniClean station. This dock features a vertical design with a slender footprint, minimizing floor space while placing the internal maintenance tanks at a more comfortable, ergonomic height.
The station features built-in water electrolysis, providing a continuous sanitizing effect for both floor maintenance and internal component cleaning.
During the post-cleaning cycle, the dock washes the mop roller with heated 140°F (60°C) water before initiating a forced-air thermal drying cycle at 131°F (55°C) to inhibit bacterial growth and odor. The UniClean dock also handles automatic detergent dosing, houses a real-time LCD touchscreen status display, supports fast charging, and provides an auto-empty dustbin with disposable bags rated for up to 68 days of hands-off debris storage.
Software and Ecosystem Integration
Eufy’s mobile app remains a strong positive for the overall user experience, with healthy ratings on both Android and iOS. The user interface offers a rich feature set for tailoring cleaning settings, multi-floor environments, and detailed 3D floorplans. Within the app, users can draw virtual boundaries, establish localized no-go zones, set no-mop restrictions, and modify per-room cleaning parameters.
App Store Consumer Metrics
- Android App Rating: 4.4 / 5 Stars
- iOS App Rating: 4.7 / 5 Stars
For smart home enthusiasts, the ecosystem integrates with major third-party voice assistants and supports the Matter smart home connectivity protocol. While the robot features a front-facing camera for object sensing and recognition, Eufy doesn’t offer remote live-video viewing features within the app software.
Top 20 Robot Vacuums
Explore Vacuum Wars’ always up-to-date rankings of the best robot vacuums, based on independent, hands-on testing. We purchase every unit ourselves and have evaluated more than 150 models, giving us a deep benchmark for cleaning performance, navigation, battery life, and advanced features like obstacle avoidance and mopping.
Where the Omni S2 Struggles: Cons to Consider
While the Omni S2 exhibits flagship-tier engineering, we did run into a few drawbacks. These aren’t necessarily fatal flaws, but several performance metrics fell below our average scores and are worth noting.
Despite the upgrades to rotational speed and downward pressure over the S1 Pro, the Omni S2 struggled on our dried stain tests. It achieved a score of only 82 points in this category—marking a significant 20% drop below the studio baseline, and a big drop from the exceptional score from the original S1.
We think that this performance drop is tied to the robot’s conservative water output. The S2 restricted its on-floor fluid output to a mere 0.35 grams compared to the average of 1.07 grams. While low water volume helps prevent surface streaking, it can sometimes make a mop struggle to break down dried stains. Even though its overall combined mopping score is above average, it was a big step backward from the S1, which scored way above the average. These results aligned with early consumer feedback in online communities like Reddit, where users reported some inconsistent results.
Mopping Metrics: Studio Snapshot
| Test | Eufy Omni S2 | Eufy Omni S1 | Studio Average |
| Dried on Stain | 82 | 136 | 108 |
| Water Penalty | 0.35g | 0.90g | 1.07g |
| Combined Mopping Score | 28.9 | 38.1 | 20.3 |
Navigation efficiency also underperformed compared to the earlier S1. The S2 recorded a navigation efficiency metric of 0.64 square meters per minute, falling behind the studio average of 0.71 and the 0.83 achieved by the previous S1 model. While battery efficiency was close to the average at 1.58 minutes per one percent of battery life, combining the slower navigation with the battery consumption gave the S2 a lower estimated square feet per charge than the average at 1,088 square feet.
Navigation Metrics: Studio Snapshot
| Test | Eufy Omni S2 | Eufy Omni S1 | Studio Average |
|---|---|---|---|
| Navigation Efficiency (sq meters/min) | 0.64 | 0.83 | 0.71 |
| Battery Efficiency (mins per 1% drop) | 1.58 | 1.77 | 1.56 |
| Estimated Max Coverage Per Charge | 1,088 sq ft | 1,572 sq ft | 1,170 sq ft |
Because the robot integrates continuous smart resumption and quick-charging station hardware, this lower area threshold won’t be a breaking issue for standard residential floor plans. However, for users trying to maintain extensive, wide-open living areas on a single charge, it’s a dip to keep in mind.
Our final critique is threshold climbing. Eufy rates the S2 to climb single thresholds up to 35 mm and double thresholds up to 42 mm. But in our single-threshold test, it only cleared a 32 mm threshold once in three attempts. If your home has tall thresholds, room transitions, or deep sliding door tracks, you may run into occasional issues.
Conclusion and Final Verdict
The Eufy Omni S2 improves on the S1 Pro in several important ways. It has much better carpet deep cleaning, an effective anti-tangle brush system, and excellent obstacle avoidance. If your home has a lot of carpet or pet hair, the S2 is the better choice.
Its biggest trade-off is mopping. It did not scrub dried-on stains as well as the S1 Pro, and its navigation was slower than average. If your home is mostly hard floors and mopping performance is your top priority, the older S1 Pro may still be the better fit.
Overall, the Omni S2 fixes most of the S1 Pro’s biggest weaknesses while remaining a strong all-around robot vacuum and mop. It earned a spot high on our Top 20 Robot Vacuum list at the time of testing, making it an easy recommendation for shoppers looking for a high-end robot vacuum.
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
Compare the Eufy Omni S2
See how the Eufy Omni S2 compares to other Eufy robot vacuum and mop combos. Select a model to view the full comparison. You can also compare additional models using our robot vacuum comparison tool.
Eufy Omni S2
