The Eufy Omni S1 Pro is a solid middle-tier premium pick — TechRadar 4/5, CNET 8.5/10. The HydroJet roller mop is its signature feature (beats Ecovacs on stain-lifting), and the app is best-in-class. The lower 8,000 Pa suction is the main tradeoff versus the top of the list; if your home is mostly hard floors it's a non-issue, but deep carpet owners should step up to Qrevo Curv or X50 Ultra. Eufy's past privacy reputation is also a factor for some buyers.
Full review
Revolutionary Roller Mopping System
Vacuum Wars identified the Eufy Omni S1 Pro's mopping mechanism as its standout feature, distinguishing it from competitors that rely on vibrating or spinning pads. The device utilizes a rotating roller that applies one kilogram of downward pressure, a figure higher than the industry average. In controlled testing involving dried coffee and grape juice stains, the S1 Pro significantly outperformed other models in its price range. The system continuously cleans the roller with water jets and uses a squeegee to extract dirty water into an onboard tank, preventing the streaking common when standard mop pads become saturated. This design allows the robot to handle large wet spills effectively, a task where many traditional robot mops fail immediately.
TechRadar praised the mopping performance as outstanding, noting that the ability to process liquid and store dirty water separately is a game-changer for hard floor maintenance. The base station automatically refills the clean water tank and mixes a proprietary cleaning solution, while an integrated ozone generator claims to remove 99.99% of bacteria from the water. However, some Reddit users discussing the newer S2 model expressed concern that corner cleaning remains a weakness, a limitation that likely persists in the S1 Pro given the shared roller design. Despite this, the consensus among professional reviewers is that the S1 Pro sets a new benchmark for wet cleaning on hard surfaces.
Navigation and Obstacle Avoidance
The S1 Pro features a unique internal LiDAR system that eliminates the need for a top-mounted sensor, resulting in a lower profile that allows the unit to slide under more furniture types. Vacuum Wars reported that this design choice contributed to excellent navigation efficiency, with the robot covering a 38-square-meter floor plan in approximately 45 minutes during testing. The obstacle avoidance system utilizes active binocular infrared imaging, earning a rare perfect score in the reviewer's tests. This technology proved highly effective at recognizing and avoiding objects, with three out of the top five obstacle avoidance scores in their database belonging to Eufy models. Users can adjust the sensitivity of this system via the app, which is recommended for homes with large clumps of pet hair to prevent unnecessary avoidance behaviors.
While the navigation is generally praised, the app's feature set received mixed feedback regarding customization. Vacuum Wars noted that the software lacks certain advanced options found in competitor apps from Roborock or Ecovacs, such as the ability to mop with the grain of hard floors or granular control over mop pad lifting behaviors. Despite these software omissions, the mapping capabilities, including multi-level map support and fast mapping, were described as working very well. The combination of the low-profile chassis and advanced sensors ensures the robot can navigate complex environments effectively, though the software interface may feel slightly less feature-rich to power users accustomed to more granular control.
Carpet Performance Limitations
Despite its dominance on hard floors, the S1 Pro faces notable challenges when transitioning to carpeted surfaces. Vacuum Wars explicitly highlighted that while the roller mop lifts automatically when sensing carpets, the vacuum's performance on these surfaces is not as strong as its hard floor capabilities. The unit is described as decent but falls short of being a top-tier carpet cleaner compared to dedicated vacuum-focused models. The floating main brush and dual side brushes perform well with debris pickup on both surface types, but the overall suction power, while above average in bench tests, does not fully compensate for the limitations in deep carpet cleaning. This distinction is crucial for potential buyers with significant carpeted areas in their homes.
Reddit discussions often compare the S1 Pro to other high-end models like the Dreame L40 Ultra or Roborock Qrevo Pro, which are frequently cited as having superior carpet performance. One user in a comparison thread noted that while the S1 Pro is excellent for maintenance on hardwood and tile, it may not be the ideal standalone solution for homes with thick high-pile carpets. The consensus suggests that the S1 Pro is best suited for environments where hard flooring is the primary surface, with carpets being limited to small rugs or bedrooms. Users with extensive carpeting may need to weigh the superior mopping capabilities against the compromise in vacuuming depth on soft surfaces.
Base Station and Maintenance
The Uniclean station serves as a comprehensive maintenance hub, handling dustbin emptying, mop washing, drying, and water tank refilling. TechAdvisor described the unit as having one of the most advanced feature sets available, including the ability to wash and heat-dry the mop pads. The dustbin bag is designed to hold up to 65 days of debris, reducing the frequency of manual intervention. The base station also features an LCD touch interface for direct control, which reviewers found ergonomic and useful for managing the various tanks and settings. The inclusion of the ozone generator in the clean water tank adds a layer of hygiene, aiming to sanitize the water used for mopping and prevent bacterial growth within the system.
Maintenance requirements are generally low, but the system does require periodic attention to the dirty water tank and the cleaning of the mop washing mechanism. A Reddit user who has owned the device for a year reported cleaning the mop cleaning part monthly and keeping the machine topped up with water. While the automated processes handle the bulk of the work, the sheer size of the base station was noted as a potential drawback for those with limited floor space. The tall design, intended for ergonomic access to tanks, can be a significant footprint consideration. Overall, the station delivers on its promise of a hands-off experience, provided the user has the space to accommodate its dimensions.
Value and Market Position
Priced as Eufy's flagship model, the S1 Pro sits at a lower price point than many competing high-end robot vacuums, offering a compelling value proposition for hard floor owners. Vacuum Wars noted that while it is the most expensive Eufy model, it remains more affordable than flagship units from other major brands. This pricing strategy, combined with the unique roller mopping technology, positions the S1 Pro as a strong contender for those prioritizing wet cleaning performance. However, the market is crowded with alternatives like the Dreame X40 Ultra and Roborock Qrevo Pro, which are often discussed in Reddit threads as having more balanced performance across both carpets and hard floors.
The release of the newer S2 model has created some confusion in the market, with Reddit users speculating on pricing and feature upgrades. Some users expressed concern over the delay in the S2 launch and the lack of transparency regarding its readiness, which indirectly affects the perceived value of the S1 Pro. Despite this, the S1 Pro remains a highly regarded device for its specific strengths. The decision to purchase often comes down to the user's specific floor composition and willingness to accept carpet limitations in exchange for superior mopping capabilities. For those with predominantly hard floors, the S1 Pro offers a level of cleaning performance that few other devices can match at its price point.
Strengths
- +HydroJet roller mop with 1,500 RPM pressure-wash mopping — stronger than Ecovacs's roller in stain tests
- +8,000 Pa suction — lowest on this list but well-engineered airflow keeps pickup competitive on hard floors
- +3D ToF navigation plus RGB camera for obstacle avoidance
- +Auto-refill with clean water and hot-air mop drying; detergent dispensing
- +Best-in-class app with genuinely useful room-by-room cleaning controls
Watch-outs
- −8,000 Pa suction trails the 18,000-22,000 Pa tier from Roborock/Dreame/Ecovacs — less effective on deep carpet
- −Eufy's 2022 privacy incident (cloud-uploaded snapshots despite local-only marketing) is a trust issue some users still hold
- −Dock is the largest of the five — roughly the footprint of a small trash can
Who this is for
At a glance: Best for mid-tier mopping — pressure-wash HydroJet roller.
Why you’d buy the Eufy Omni S1 Pro
- HydroJet roller mop with 1,500 RPM pressure-wash mopping — stronger than Ecovacs's roller in stain tests.
- 8,000 Pa suction — lowest on this list but well-engineered airflow keeps pickup competitive on hard floors.
- 3D ToF navigation plus RGB camera for obstacle avoidance.
Why you’d skip it
- 8,000 Pa suction trails the 18,000-22,000 Pa tier from Roborock/Dreame/Ecovacs — less effective on deep carpet.
- Eufy's 2022 privacy incident (cloud-uploaded snapshots despite local-only marketing) is a trust issue some users still hold.
- Dock is the largest of the five — roughly the footprint of a small trash can.
Rating sources
Our 4.1 score is the average of these published ratings. More about methodology.
