eufy Omni S2 Review: The Robot Vacuum That Actually Smells Good

Anker is a pretty well-known charging brand, but these days, Anker does a whole lot more than that and has a number of sub-brands. Including eufy. For Anker, the eufy sub-brand basically covers all of their home appliance products, like robot vacuums. The eufy Omni S2 is actually the first Anker-branded robot vacuum I've used in almost a decade - that's not even an exaggeration. And I have to say, eufy has a really good robot vacuum here. Of course, this is their high-end $1,599 robot vacuum, so it should be good for that price. But let's jump into the review and tell you the good, the bad, and the ugly about this new robot vacuum. The eufy Omni S2 does come with a nice and tall base, which is quite compact, but still does all of the functionality that you'd expect from a robot vacuum in this price range. It can refill the water reservoir in the S2, clean the mop, empty the dustbin, and even add soap into the water reservoir. Something that we haven't seen from a lot of other robot vacuums. Now, to make this base as sleek as it is, eufy did have to move some compartments around. So underneath the clean water tank, is the dustbag. It took me a while to figure out where this actually is, because on most other robot vacuums, it is located in the front, with a door that opens. The vacuum itself is a nice two-toned color, with the front being black and the back half being a sort of silver color. But the cover is actually slightly transparent. So you can see the motor working while it is cleaning. It's a cool change from a lot of other robot vacuums. But unfortunately, it is still a glossy finish, which means it scratches pretty easily. It tends to get stuck underneath my TV console every single time I run the vacuum (it just doesn't learn), and that leads to the front portion being pretty scratched up. This isn't as thin as some other robot vacuums on the market, but there's a good reason for it. This is a robot vacuum that is capable of 30,000Pa suction power. That is quite impressive, considering, just a couple of years ago, we were impressed by vacuums with around 3,500Pa. This means it's going to pick up everything off of your floors, even dirt and dust that you can't see. eufy Omni S2 is able to increase its suction power when it is on carpet, versus being on hardwood, tile, or laminate flooring. This is really good for those with pets, as that pet hair can really get everywhere. "During the nearly three months with this robot vacuum, the Omni S2 has had no obstacle collisions." Navigation is quite good here, with CleanMind AI which is powered by 3D MatrixEye 2.0 and it is able to detect over 200 different objects. This helps it either avoid the objects, or change up the cleaning strategy. During the nearly three months with this robot vacuum, the Omni S2 has had no obstacle collisions. The only time I've needed to rescue it, is when it gets stuck under other objects - like my TV Console. Which I am truly puzzled why it hasn't learned it can't go all the way under it. We've had robot vacuums with the ability to use soap in the water reservoir before, but being able to include a scent is not something we've seen before. eufy has developed a few different scent cartridges that fit into the Omni S2 and emit a scent while it's cleaning. Leaving your home smelling really good. "I've run this robot vacuum around 19 times, cleaning almost 4,000 square feet, and the scent cartridge is still about 80% full." Currently, eufy has three scents available. This includes Bamboo and Sage, Citrus and Basil, or Bergamot and Lychee. These do last for quite some time, too. I've run this robot vacuum around 19 times, cleaning almost 4,000 square feet, and the scent cartridge is still about 80% full. It's a really nice touch, and one that I hope other robot vacuums will add in the future. eufy is selling these cartridges separately, so you can get another three-pack for $27. Which is not a bad price at all, about $9 per cartridge. I've already touched on the performance aspect of the Omni S2 a little bit. But let's start with the vacuuming portion. It is able to max out at 30,000Pa for suction and 100AW. That's quite powerful for a robot vacuum, and really puts it on par with upright vacuums. Meaning that it's not going to leave anything behind. To put this to the test, I've run it on the main floor of my townhouse quite often. Even running it twice a day, to see just how much dirt, dust and other debris it picks up, that I don't even see. And it's a lot. It's a lot more than you'd think. But then again, I do have a dog that is currently growing her summer coat, and seems to always be shedding. So she does a good job of putting robot vacuums like the eufy Omni S2 through its paces. I actually prefer this vacuum over some of its competitors that I've used recently. It seems to do a better job than others from 2025 from Roborock, ECOVACS and Eureka. Which is quite impressive, to say the least. Now, onto the mopping side. Unfortunately, I don't have a lot of space for the vacuum to mop, since it's basically just the kitchen and the foyer that has laminate flooring. But during the winter, it did get a really good test, with all of the snow, salt, etc., that gets tracked in and melts in the foyer. And the Omni S2 did a really good job of cleaning that up. But it doesn't quite get all the way to the edges of the room and the corners. So it can't completely replace a mop, unfortunately. This is despite the HydroJet 2.0 mop being able to extend and cover more parts of the floor, all the way to the edges, with ease. But to be fair, most robot vacuums I've tested, even those that have extending mops, have this issue. So it's not unique to eufy. I do wish it could wash the mop in real-time like some of ECOVACS latest robot vacuum and mop combos. But you can set the Omni S2 to go back and clean the mop after a certain period of time, too, if you're worried about spreading bacteria around. Finally, the base. The base does what it's supposed to do. It cleans the mop, dries the mop, and empties the dustbin. As always with robot vacuums like this, you do want to empty that dirty water tank often, or it can really start to smell. I typically empty mine every couple of days. But the clean water tank only needs to be filled about once a week, usually less. The base also has Eco-Clean Ozone, which is able to produce ozone from tap water and use it to deep clean surfaces. So sometimes, if you look at your base, you will notice what looks like steam or smoke inside the clean water tank. But it's okay, that's just the ozone doing its job. The only complaint I have with the base is that it sometimes doesn't fully empty the dustbin. Sometimes stuff gets caught, and it doesn't actually empty. This happens with other robot vacuums too. But what I'd like to see changed is, giving me a notification saying, hey the dustbin isn't empty. Otherwise, I'll run it again, or a few more times and it ends up really packing that dustbin and making it so it definitely can't be emptied when docked. Otherwise, it's a really well thoughout dock. And the entire cleaning performance of the eufy Omni S2 is quite good. The eufy app is actually a really good app. It's mostly the same as the other robot vacuum apps on the market these days. Where you have your products on the main page, that you can then enter to manage. But something that eufy has added here that I really like, is the ability to add a scheduled task, and see the dirty water reservoir level. Once you jump into the Omni S2 page, you'll see the floorplan of your home there, where it has identified the different rooms, as well as furniture and other things in those rooms. From here, you can swipe up to set up a task for it to start. Including vacuuming and mopping, or just vacuuming, how many times to clean the room, where to set the water flow, etc. There is also AI available to automate this. For instance, if you are running the vacuum daily, you likely don't need the most intensive cleaning options on for each cleaning. In the Settings, you'll also find options for all of the features of the Omni S2. Including some quick actions for the dock, like washing the mop, drying the mop, and emptying the dustbin. Overall, the app is very easy to navigate, and easy to use. The only thing I'd like to see change is, a maintenance section in the Settings. Currently the only way to see the maintenance page and when you might need to replace parts, is by tapping on the dirty water reservoir tile on the main page. Here you can see how much time is left on each part before it needs attention. If money is no object and you want the best cleaning performance in a robot vacuum right now, the eufy Omni S2 is a really compelling option. The 30,000Pa suction is genuinely impressive, the CleanMind AI navigation kept it collision-free for nearly three months of testing, and little touches like the scent diffuser make it feel more premium than the competition. It's not just a gimmick machine - it actually outperformed some of the most well-regarded robot vacuums from Roborock, ECOVACS, and Eureka that I've tested recently. That said, $1,599 is a lot of money for a robot vacuum, no matter how good it is. And it does have its quirks - the dustbin doesn't always empty cleanly, the mop still can't quite get into corners, and somehow after nearly three months it still hasn't figured out to stay away from my TV console. These aren't dealbreakers by any means, but they're worth knowing going in. If you're already in the market for a high-end robot vacuum and mop combo, the eufy Omni S2 absolutely deserves a spot at the top of your shortlist. But if you're on the fence about spending this much, there are solid options at lower price points that will still do a great job. The Omni S2 is the kind of vacuum you buy when you want the best - and for the most part, it delivers on that promise.