I Tested the Yeedi S20 Infinity Robot Vacuum – and Its Quiet but Powerful Performance Almost Blew Me Away

The Yeedi S20 Infinity is part of the premium, flagship genre of robot vacuums, with high price points that may not appeal to everybody. But if you're looking for genuine hands-free cleaning, this is worth the spend.

It runs more quietly than the best robot vacuums out there, and it does an outstanding job vacuuming and mopping, doing much of your home's deep cleaning for you.

It uses cleaning solution, which is something that I wish more robot vacuums would do. After all, you wouldn’t mop your floors with plain water, so why would you have your robot vacuum do the same? The Yeedi S20 Infinity [at Amazon] is also Matter-certified, meaning it can connect to any smart home system out there. Read on to find out why I rate it so highly.

The One-Minute Summary

It can be tough to recommend a premium product sometimes, because as good as they are, they’re expensive and there are cheaper models that often punch above their weight. That’s the case for the Yeedi S20 Infinity.

The Yeedi S20 Infinity [at Amazon] performs better than most of the competition. It runs very quietly while still doing a stellar job vacuuming and mopping. It also has a very long battery life and has most of the features one could think of, including being able to connect to any smart home ecosystem.

That being said, it’s pricey, and the Yeedi S14 Plus is much cheaper and covers 90% of the same territory. You’ll have to decide if paying the difference is worth the smart home support and the deeper clean owed to higher suction and dedicated cleaning solution.

The Yeedi S20 Infinity is available for $1,599.99 at Amazon.

Yeedi S20 Infinity: Specifications

Yeedi S20 Infinity: Setup

When unboxing the Yeedi S20 Infinity robot vacuum, I was struck by how little assembly was required, but also how tedious certain aspects of it still are. When I pulled everything out of the box, the side brush was already installed on the robot vacuum itself. In fact, on the unit, all I had to do was remove some plastic wrapping and the foam lining.

The base station took a little more work, however. The whole thing is on the heavier side so it takes a bit of muscle to get it out of the box, and there’s a base plate that needs to be installed.

Everything is covered in clingy plastic that needs to be peeled off section by section. While I appreciate the fact that it’s there to keep the base station safe during transport, it does mean a little extra work to unbox, and it isn't the most eco-friendly design choice. In total, fully unboxing the Yeedi S20 Infinity takes maybe five minutes.

Setting it up is fairly straightforward. Besides powering the base station and the robot vacuum, most of the work is during the app and smart home setup, which mostly consists of following the on-screen prompts, though you do need to pair the robot vacuum (there’s a button to hold down next to the power slider) and you should know the WiFi info of the network you’ll be connecting to.

Of course, it’s not fully set up at this point, as it needs to map your home. Getting it to do so is a press in the app, but it takes some time to go from room to room and map out the floor plan. I found that once that’s done, the map created is fairly accurate. It’s worth noting that you can’t fully set up the Yeedi S20 Infinity robot vacuum without a smart phone.

Before running, you'll need to fill up the clean water tank and the regular and hard cleaning solution reservoirs if you chose to get them, as they’re an additional purchase.

Yeedi S20 Infinity: Design and Features

The Yeedi S20 Infinity follows the looks of most of the other Yeedi robot vacuums I’ve tested. Its colorway is a black and gray affair with splashes of red, usually on levers or buttons. The robot vacuum itself is flat on top – great for fitting under furniture where dust tends to build up – with a removable faceplate that hides the power slider, pairing button, and onboard dustbin.

There’s also the onboard water reservoir on its back, which is pretty small. Where this robot vacuum is a little different than most, though similar to other more premium models from Yeedi, is how it’s arranged underneath. The brushroll used is the kind of anti-tangle one I see a lot with alternating lines of brushes and silicone that’s good for dealing with lots of hair, especially as a vacuum for pet hair. There’s just one side brush, which has a unique angle to push debris in front of it instead of kicking away.

And the Ozmo Roller 2.0 mopping roller brush is probably the most innovative improvement that I’ve seen on a robot vacuum. Not only does it extend out to mop edges, but its form factor means that it’s spinning but doing so in a forward to back motion instead of a circle like most mop pads that spin. This means that it mops up spills instead of moving contents around.

While you can control the Yeedi S20 Infinity through the app, and there’s plenty of fine tuning such as turning off the voice that announces every little thing the robot vacuum is about to do or scheduling cleaning, this robot vacuum supports the Matter smart home standard. This means that it can be connected to just about any ecosystem and voice assistant you use.

The base station also holds a few important design improvements and features. Notably, it holds both regular and heavy-duty cleaning solution, for different spills. The base station will also wash and dry the mop regularly during and after cleaning. Also worth noting is that while you do have to buy those cleaning solutions separately (both the regular and heavy duty solution is available at Amazon), you won’t have to buy dust bags as the base station’s dust bin is a removable, reusable canister that can easily empty into the trash the one time a month it’s required.

A little less impressive are the size of the water tanks. It’s not a dealbreaker, but the robot vacuum likes to wash its mop fairly regularly so under default conditions, I have to fill up the clean water tank and empty the dirty water tank every two to three uses.

What Is the Yeedi S20 Infinity Like to Use?

When it comes to interacting with the Yeedi S20 Infinity, I find using it to be on par with any other recent robot vacuum I’ve used. While there’s a button on the vacuum itself that will set it to start cleaning, this is the kind of device where I instinctively turn to the app for whatever I plan to do, whether that’s creating a schedule or choosing the parameters of a cleaning.

Adjusting the parameters is easy per usual as everything is in a menu that you can pull up from the bottom. Choosing vacuum and mopping strengths and the number of passes gives quite a bit of flexibility. However, if you don’t want to think about it, there is an AI mode that will adjust on the fly, which makes things more intuitive.

While I don’t recommend robot vacuums for deep cleaning your home – even when they’re as powerful as this one – in its day-to-day use, I’ve found the Yeedi S20 Infinity to do a fantastic job of keeping dust and debris off the floor. Pet dander, little pieces of food, and random dust all get sucked up for a floor clean enough that I don’t mind walking across it barefoot.

I was also impressed by how silent this robot vacuum is. The last robot vacuum I tested was the Yeedi S14 Plus, which I already found to be on the quiet side. The S20 Infinity is even quieter (unless you have it at max vacuum suction settings), running at around 56 dB. Of course, the self-emptying on the base station is louder at 76 dB but that takes a very short amount of time.

The object avoidance was good as it recognized objects quickly and navigated around them. Plus, you can toggle a setting in the app to take a wider berth to objects – essentially an “avoid hitting my dog” button.

It mops the floors evenly with its wide, six-inch cleaning path. I didn’t find any streaking or uneven washing, and as I’ve used this robot vacuum on carpet, I didn’t have to worry about the roller getting the carpet wet as it automatically lifts up when used.

Lastly, since I used the Yeedi S20 Infinity in a carpeted room that was on a different floor, it had to last at least half an hour of testing without using up too much battery. And since the battery life its very long, rated at 254 minutes, it’s not something I had to worry about. Of course, it does have fast charging to the tune of 6% of the battery in three minutes if you somehow manage to run that battery out.

The Yeedi S20 Infinity is available for $1,599.99 at Amazon.

Yeedi S20 Infinity: Vacuuming Tests

For the vacuuming tests, I ran the Yeedi S20 Infinity by cleaning hardwood flooring and low-pile carpeting. I used flour, sugar, lentils, and cereal to see how well this robot vacuum would do with debris of various sizes. While it had already done a good job with dust and pet dander, using these controlled tests was illuminating in a way I didn’t expect.

The Yeedi S20 has 19,500Pa of suction, which means that it should vacuum everything up in its path without mercy. While it certainly does have powerful suction, it still had some areas it struggled in.

Now, it sucked up the lentils and cereal with aplomb, besting the Yeedi S14 Plus that tended to shoot lighter particles like lentils out like it’s playing hockey. And it did so effectively on both hard and carpeted flooring.

It handled getting pieces of debris at the edges well on hardwood, though it struggled a bit on carpet between the carpet and the molding, which is one of the hardest cleaning tasks and not something I can really hold against the robot vacuum.

That brings up probably the most important point for a flagship robot vacuum, and that’s the fact that no matter how powerful one is, it can’t beat manual deep cleaning with your best vacuum cleaner. Whether it’s cleaning up lentils at the edges of my carpet, mopping up large amounts of ketchup, or getting a bunch of flour and sugar, most robot vacuums aren’t going to be able to spot clean a big mess as easily as I can with a regular vacuum.

Vacuuming up sugar and flour definitely highlighted that shortcoming as well as any other test or observation. Namely, the Yeedi S20 Infinity took a long time and multiple passes to mostly suck up these smaller particles on hard flooring as it did on carpeting. However, it did better on carpeting as it mostly captured all the sugar and flour, while I had to manually clean up some remnants on hard flooring even after two passes.

Yeedi S20 Infinity: Mopping Tests

When it comes to mopping, the Yeedi S20 Infinity has a leg up on most other robot vacuums. It’s actually surprising how few robot vacuums use additional cleaning solution, considering the goal is clean floors. Along with the eufy Omni S1 Pro, the Yeedi S20 Infinity is one of the few.

Also in its favor is its “Ozmo Roller 2.0” brushroll, which rolls the same way as a regular brushroll as opposed to either a flat pad that’s pressed against the floor or the spinning round mop pads that a lot of premium models come with.

This roller then combines the even cleaning surface of the former flat pad and the spinning pressure and motion of the round mop pads. It’s the best of both worlds and it showed in our mopping tests.

The Yeedi S20 Infinity sucked up the mustard and ketchup that I set out in front of it quickly and in one pass. Now, this isn’t a true replacement for the best vacuum-mop combos, despite the marketing, as it does get overwhelmed a bit with a lot of liquid. In this test, even though it did two passes and got most everything it was supposed to, it did still leave thin lines of mustard and ketchup at the edges of its cleaning path.

It did at least get to the edges of the room with some ketchup I had squirted over there. And it left the rest of the floor outside of the remnants it left behind very clean. While another pass would have probably gotten the rest of what was left, I was impressed with its mopping skills.

The Yeedi S20 Infinity is available for $1,599.99 at Amazon.

Yeedi S20 Infinity: Maintenance

The aforementioned vacuuming and mopping tests provided a good chance at looking under the hood. After all, learning how to clean a robot vacuum is going to affect its performance and longevity.

Luckily, it’s mostly straightforward. The brushroll and the cage that contains it are easy to remove, making it easy to get to anything that gets tangled in there. A filter that sits behind the Ozmo Roller 2.0 mopping brushroll comes out just as easily to be emptied out and cleaned.

Outside of that and the filter inside the robot vacuum’s own dustbin, none of the other parts are easily removable, if removable at all. That mopping brush may get washed and cleaned in the base station, but the area behind it is basically inaccessible to clean. And when you’re mopping up a bunch of ketchup and mustard, you’re probably going to have to clean the underbelly of this robot vacuum somehow.

As far as the routine maintenance goes, the base station does a good job of automatically emptying the robot vacuum’s contents into its own dustbin every time the robot vacuum docks. And that dustbin is big enough that it will only need emptying once a month. I also appreciate that it's a canister and not a dust bag that eventually needs replacing, with more recurring purchases.

The water tanks are a little bit smaller than average. I have filled up the clean water tank after every other clean and emptied the dirty water tank almost as much. I do appreciate the fact the Yeedi S20 Infinity always washes and dries its mop roller, but it’s probably a major reason why it runs through water so quickly.

How Does the Yeedi S20 Infinity Compare?

With an MSRP of $1,599.99 at Amazon, the Yeedi S20 Infinity robot vacuum fits into the premium flagship level of robot vacuums, not only for its price but also its feature set. Not only is there the high suction vacuuming and spinning brushroll for mopping, but Alexa and Google Support are built in as is the ability to use two actual cleaning solutions. It's often discounted though, as it is now at the time of writing, with almost a third off the full asking price at Amazon.

The Yeedi S14 Plus is an interesting comparison, mostly because its MSRP of $1,199.99 is also out of reach for many, but the frequently discounted price of $549.99 puts it within reach of those that are price conscious. You don’t have any smart home ecosystem support and you can’t use a cleaning solution, but it’s still a very solid option that will get you most of the way there for a much smaller spend.

The Eufy Omni S1 Pro has a similar MSRP to the S20 Infinity, but is often discounted to as low as $900. It also uses cleaning fluid to help with mopping but doesn’t have the suction power of either Yeedi robot vacuums.

How I tested the Yeedi S20 Infinity

There is a lot that goes into how we test vacuums, which includes going through the app with a fine tooth comb, running benchmarks, and simply living with the product to see how it fits into everyday cleaning.

For the Yeedi S20 Infinity, I used it for a week running it every day in an area regularly occupied by five adults, two French Bulldogs, and a reclusive cat. I ran it typically with vacuum and mop functionality together, though I’ve run it with just one or the other for testing.

As far as targeted tests go, I tested it using a quarter cup of sugar, lentils, and cereal, testing with each type of substance individually on both hard flooring and carpet. I also tested the mopping by running two tests, first with a quarter cup of ketchup and second with the same amount of mustard.

The Yeedi S20 Infinity is available for $1,599.99 at Amazon.

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