The Eufy Omni S2 Robot Vac Matches the Power of My Upright Dyson, and It Even Sanitized My Floors

7 min readI’ve tested a lot of robot vacuums and cordless stick vacs, so I find it hard to get excited about a new release as they all tend to feel the same after a while. So what made me want to get my hands on the Eufy Omni S2 wasn't a number; it was a shape. Nearly every robot vacuum base station I've seen sits low and wide, which means bending or crouching to swap the water tanks. The Omni S2's station stands tall and narrow instead, and that design sold me before I'd seen it clean a floor.Once I had it running in my house, however, the shape turned out to be the least interesting thing about it. This robot vacuum and mop combo takes on carpet and hardwood with real suction. Its split brush roller never tangles with pet hair, and it mops with electrolyzed water and downward pressure combined with a rolling brush for sanitized floors. Plus, it hands off nearly every gross maintenance task to its base station.I've run it in a house with six pets and daily foot traffic, and it's the robot vacuum I'd hand my credit card over for without a second thought.Pros30,000 Pa suction with no fadeMop sanitizes as it cleansBase station takes care of maintenanceConsOnly one front-facing sensorNo mop-only or vacuum-then-mop modesKey SpecsSuctionUp to 30,000 PaNavigation3D MatrixEye 2.0 with ToF sensor, RGB camera, and CleanMind AIRuntimeUp to 179 minutes (vacuum only); up to 150 minutes (vacuum and mop)Base Station12-in-1 UniClean Station (auto-empty, mop wash, hot-air dry, detergent dispense)Vacuum Dimensions12.79 x 13.66 x 3.78 in.How I Tested the Omni S2I ran the Omni S2 almost daily for six weeks across hardwood, tile, and low-pile rugs in a house that sees constant pet traffic. I also compared it to the Eufy Omni E25 and Levoit Aero I already had in rotation so I could see how it stacked up against machines I know well.Lauren BongardThe Eufy Omni S2 uses sensors and a camera lens to navigate its way through your home.I tracked how it handled everyday debris and pet hair and avoided the occasional cat toy or pair of shoes, and I ran a few more targeted tests too: checking how well it picked up cat litter, letting spills sit on the kitchen floor overnight to see if the mop could lift them, and comparing suction on the same stretch of carpet with what my other robot vacuums could do.I also paid attention to the maintenance side, since that's where robot vacuums can start to feel like a chore instead of a convenience. That meant tracking how often I had to wipe down the sensors and camera lens, whether hair or debris built up on the wheels, if the brush needed manual cleaning, how quickly the dust bag filled between changes, and how simple it was to refill and rinse the water tanks.The Design Saves Space—and My BackThe base station's taller, narrower footprint is a style choice, but it also changes how I interact with the machine. Swapping the dirty water tank for a clean one takes seconds, and I barely have to bend to do it.The side fill hole on the clean water tank is easy to open and access, and I appreciate the reassuring click on the dirty water tank’s wider opening that makes it easy to clean. Eufy also built lights into the water tanks, so I can tell at a glance whether they're seated correctly, and at night, the glow doubles as a soft nightlight.Lauren BongardThe base station is narrow and tall, allowing you to take care of maintenance a lot easier.It Doesn’t Miss a Thing, Even in the DarkThe robot has its own lights too, positioned so I can watch dust and debris swirl into the intake as it cleans. It gives me instant visual confirmation that the suction is doing its job, and it lets me know whether I should run the vacuum more often in certain rooms.It also lights its own way. If it’s cleaning in a dark hallway, corner, or room with the lights off, it turns on its own spotlight to see what it's doing. I never have to think about flipping a switch before I start a cleaning session.I still do a quick walkthrough before cleaning to clear obvious hazards, but I inevitably miss something—a cat toy, a stray shoe, a phone charger cord. The Omni S2 has consistently avoided everything I've forgotten to pick up. The navigation system recognizes more than 200 types of objects, which tracks with what I’ve experienced.Powerful Suction Without the NoiseThe Omni S2 pulls at up to 30,000 pascals (Pa), and I noticed the difference immediately, especially in high-traffic spots that get flattened over time. What surprised me more is that the suction never gets loud. I run this vacuum while I'm on calls in the next room and rarely notice it's working.That suction doesn't taper off, either. Eufy calls it fade-free, and it’s 100 air watts of consistent airflow that pulls dirt, allergens, and pet hair out of the base of carpet fibers instead of just skimming the surface. Air watts measure usable suction, and most robot vacuums don’t even bother listing this number because it’s usually so low. Hitting 100 puts the Omni S2 closer to the power I’m used to getting from a solid cordless stick vac or my Dyson Ball Animal 3 Extra upright than what I’d expect from a robot.It also comes with a practical bonus—two extending side brushes that reach under the heating vents and along baseboards where dirt and hair can dust-bunny up.No More Fighting Tangled BrushesBetween six shedding pets and my own long hair, I've cut stranded strands out of vacuum brush rollers more times than I can count. The Omni S2 uses a DuoSpiral main brush, which splits into two separate rollers with a gap between them to funnel hair into the suction port instead of letting it wrap around. I haven't dealt with a single tangle since I started testing it.The five-stage filtration holds up, too. Rooms smell cleaner, and the air coming off the base station during emptying doesn't carry that stale dust smell some stations leave behind.The Rolling Mop Sanitizes FloorsMost robot mops use spinning pads that get dirtier the longer they clean, meaning the water spreading across your floor gets dirtier too. Instead, the Omni S2 uses a rolling mop paired with electrolyzed water and 15 newtons of downward pressure. That’s far more scrubbing force than I ever expected from a robot.Eufy says that combination eliminates 99.99 percent of bacteria on every pass. I can't verify a number like that myself, but even with two dogs tracking things in from the yard all day, my floors have never felt cleaner under my bare feet.That process does use more water, both while mopping and while the station cleans the roller afterward, but you can dial that up or down depending on the floor, and the machine manages all of it without extra effort. The mop also extends slightly beyond the robot's body, so it catches edges and corners that a flush-mounted pad would miss. Plus, it lifts automatically when it senses carpet, so I never have to think about cleaning order or manually switch modes between rooms.The Base Station Does the Dirty WorkThis is where the Omni S2 pulls ahead of nearly everything else I've tested. The station washes the mop roller with 140-degree Fahrenheit water. It's not quite the scalding-hot mop water my Dreame H15 Pro Heat uses, but it's hot enough to do the job.Afterward, the base station dries the mop roller with 131-degree Fahrenheit hot air, so I'm never handling a damp, dirty mop head or worried about musty mop odors. It also dispenses its own detergent, and the dust bag collects and holds debris for up to 68 days before it needs changing.I don't clean the roller or the station myself at all. The whole point of a robot vacuum is cutting down on chores, and this one delivers on that promise. My Eureka J15 Pro Ultra also handles its own washing and drying, so this kind of hands-off maintenance is fast becoming what I expect from a flagship robot vacuum.The App Keeps Me in ControlSetup and pairing were straightforward, and the app makes it easy to track the robot in real time, whether it's vacuuming, mopping, charging, or running its own maintenance cycle. I can clean the whole house with one tap, target individual rooms or zones, and set a cleaning profile, such as deep intensity with max suction, and apply it across every room instead of adjusting each one individually. I also like being able to set the robot’s collection bin to auto empty every 15 minutes, which keeps suction strong.You can adjust base station settings in the app.Lauren BongardThe Eufy Omni S2 will map out your home, and you can set no-go zones, carpets, and more.Lauren BongardYou can customize options by room within the app.Lauren BongardControl isn't limited to the app, either. The base station has its own LCD touch screen with touch-sensitive buttons built into it, so I can start a cleaning cycle, bring the robot back to charge, or trigger maintenance functions right at the dock without pulling out my phone.If I'd rather not touch anything at all, the Omni S2 also connects to Alexa, Google Assistant, or Siri. Between the app, the touch screen, and voice control, there's no scenario where I'm stuck without a way to start it.Two Small Downsides to ConsiderThe Omni S2 only has a front-facing sensor, so it moves in a slightly jerky pattern along straight edges. However, it does clean along these edges by weaving in and out of them instead of going in a smooth, straight line. There's also no automatic setting for mopping only or for vacuuming then mopping. So if either is a regular part of your routine, you'll need to get creative with a workaround.If having a dedicated stick vacuum on standby for quick spot cleaning matters more to you than a single robot doing it all, a combo setup like the SwitchBot K10+ Pro Combo covers that gap. Or, for something smaller and less expensive to keep on hand, the Levoit LVAC-300 works well, too.Final ThoughtsThe Eufy Omni S2 is the robot vacuum I'd recommend to anyone who’s tired of babysitting their machine and who wants sanitized-clean floors.The rolling mop stays clean the whole time it works, the base station handles the parts of robot ownership I used to grumble about, and the suction is strong enough to get deep into carpet fibers without giving my home a mechanical soundtrack. Moreover, the tangle-free brushes, sanitizing capabilities that feel built for a house full of pets, and a design that saves me from bending and lifting make this robot vacuum memorable on every level.Factor in the single front sensor and the lack of a combined mop-then-vacuum mode if either matters to your routine. But for daily maintenance in a busy, pet-filled home, the Omni S2 is the most capable, lowest-effort robot vacuum I've tested this year.Shop the Eufy Omni S2 Robot VacuumMore Robot Vacuums We RecommendLauren Bongard is a full-time freelance writer focusing on home improvement, lifestyle, and reviews. She loves to find the details that make projects personal, practical, and purposeful. Lauren writes for Angi.com, Real Simple, trade publications, and more. When she’s not writing, she’s wrangling a herd of rescue pets, doing DIY projects, baking, and digging in her garden in the shadow of Montana’s Bridger Range.