eufy E28 Matic Robot Vacuum and Mop, 20,000 Pa, Portable Carpet Cleaning | Roller Mop with HydroJet System, All-in-One Robot Vacuum and Mop Combo, Zero-Tangling, Corner-to-Edge Cleaning (Upgraded)
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Arrives
Wednesday, Jul 22
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Size: E28 FabricCare
Features
- Autonomous Cleaning with Self-Washing Roller Mops and HydroJet System: Enjoy hands-free operation as the robot self-cleans the roller mops 2 times per second in real-time, ensuring continuous freshness for seamless whole-home cleaning.
- The World's First Detachable Deep Carpet Cleaner in Robot Vacuum: Coffee spills on carpets, pet accidents on sofas, wine stains on chairs, or muddy car seatstackle them instantly without bulky equipment. Enjoy professional deep cleaning for your fabric furniture with E28.
- 20,000 Pa Strong Suction for Professional Carpet and Floor Care: Experience powerful pickup that eliminates stubborn dust, pet hair, and debris, ideal for robot vacuum for carpet cleaning with carpet detection to adjust suction automatically.
- DuoSpiral Anti-Tangle Brushes for Effortless Pet Hair Management: Designed to prevent hair and fur wrap from the start, reducing manual cleanup and boosting efficiency in homes with pets.
- Full Edge Coverage via CornerRover Arm for Comprehensive Pet Hair Removal: Ensures complete reach along walls and corners, perfect for managing pet hair in hard-to-access spots as part of autonomous cleaning.
- All-in-One Station with Auto Mop Washing for Total Convenience: Streamlines maintenance with self-emptying, self-washing roller mops, self-refilling, and more, supporting fully autonomous cleaning cycles.
- Keep firmware updated through the app to help your device deliver dependable cleaning with expanded functions.
- WiFi & Voltage Compatibility: 2.4GHz WiFi supported (no 5GHz support). Voltage: 110V confirms that the selected version matches your country or region.
Description
Visit the Store At eufy we believe all great smart home products need to be thoughtfully built from the start. From whole-home security to smart cleaning solutions, eufy's technology brings you expert protection and deep cleaning that's tailored to your lifestyle and creates human-first technology that enlivens the lives of everyone around you. Because care is what makes a house a home, everything we build is built with care for you. eufy, Built with Care Visit the Store The world's first 2-in-1 HydroJet floor washing robot vacuum with detachable portable deep cleaner. Our HydroJet Deep Cleaning System uses a two-scraper structure to clean the roller mop in real-time, ensuring continuous cleanliness. With 1 kg downward pressure and an 11.4 in mop, E28 mimics hand scrubbing to tackle the stubborn stains. DuoSpiral Detangle Brushes reduce hair entanglement by 53%*, so you don't have to get your hands dirty to keep your vacuum running. *Compared to previous models. The unique CornerRover arm extends for seamless edge and corner cleaning, minimizing the need for manual assistance. The HydroJet Deep Cleaning System delivers instant self-cleaning, ensuring no leftover mess after mopping. HydroJet System prevents dirt from spreading and ensures a thorough, spotless clean throughout your home.
Brand: eufy
Model Name: E28
Surface Recommendation: Hard Floor, Carpet, Wood, Tile
Special Feature: Auto Mop Washing, Obstacle Avoidance, Self-Emptying
Color: Black
Surface Recommendation: Hard Floor, Carpet, Wood, Tile
Other Special Features of the Product: Auto Mop Washing, Obstacle Avoidance, Self-Emptying
Controller Type: App Control, Button Control, Voice Control
Filter Type: others
Battery Life: 24 months
Battery Type: Lithium Ion
Voltage: 110 Volts
Capacity: 2.5 liters
Power Source: Corded Electric
Batteries are Included: Yes
Control Method: App, Push Button, Touch, Voice
Form Factor: Robotic
Brand Name: eufy
Model Name: E28
Included Components: Battery, Robot, Water Tank
Model Number: T2352
UPC: 194644272494
Manufacture Year: 2025
Item Type Name: Robotic vacuum
Manufacturer: eufy
Unit Count: 1.0 Count
Color: Black
Recommended Uses For Product: Cleaning hard floors, carpets, wood, and tile surfaces; deep cleaning carpets; handling messes on various fabric surfaces; corner-to-edge cleaning
Number of Power Levels: 1
Noise Level: 57 Decibels
Portable: Yes
Indoor Outdoor Usage: Indoor
Number of Wheels: 2
Number of Speeds: 1
Item Dimensions L x W x H: 19.06"L x 14.61"W x 17.32"H
Item Weight: 44.6 Pounds
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Jul 22
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 11S
I have been an iRobot Roomba buyer since 2007. My last Roomba bit the dust this month, and I did a ton of research before buying a replacement. I went with the Eufy for a few reasons: price point, cleaning power, quietness, and sleek design. Price: Very reasonable. Almost reasonable enough that I'd consider getting another one for my second floor. For now I'll just carry it upstairs. Cleaning power: This thing sucks... It's suction is much stronger than my Roombas have had. It picks up so much dust and pet hair. We do a full vacuum every other week with my Dyson, so I think of the robot vacuum as a supplemental vacuum. I was shocked at how much was in the dustbin after it's inaugural cleaning! The picture attached to this is from that cleaning. It also gets a ton of dust in the little dust filter. In one of the video reviews I watched, the reviewer said it didn't pick up anything in that dust filter... So maybe my carpet is particularly dusty, because it has a thick layer after each cleaning. Quietness: I work from my home office, and this thing is quiet enough that I don't even turn it off during conference calls. This might be the thing I am most impressed with. My last Roomba was LOUD-- you couldn't even have a conversation with someone in the same room, let alone someone on speakerphone. Sleek design: I love/hate this. It definitely looks modern and cool, and more like an art piece than an appliance, but it shows all my finger prints, and now I keep a glasses cleaning cloth nearby so I can rub it down. I suppose if I only use the remote and never pick it up, this won't be an issue. A few considerations: I was hoping to find a robot vacuum that wouldn't eat my carpets' tassels, but I don't think that vacuum exists. I have only used the Eufy 4 times so far, and it doesn't always get its brushes wrapped around the long tassels, but it does sometimes. It seems to realize it sooner than my Roomba did at least. The Roomba would sometimes rip gobs of them off in a single cleaning. I try to tuck them under the edge of the rug and that doesn't seem to bother Eufy. It has pulled off probably 2 tassels so far. The cleaning pattern seems pretty random. I saw some other vacuums that chart out complex maps of your home, and Eufy doesn't seem to do that. But, it doesn't seem to matter, because it still hits every spot in the rooms. I'm a little concerned about durability. My Roombas ran for many, many years with easily replaceable parts. We'll have to see if Eufy has the same longevity. All in all- I'm very happy with my purchase and definitely recommend it!
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Reviewed in the United States on September 7, 2018 Reviewed in the United States on September 7, 2018 by LB
Size: 11S
Background: I have a shedding dog, so I bought this in hopes that by running it every-day, it would pick up on some of the dog hair on the floor. What I like: -VERY easy to use. -easy to follow instructions -has a sticker on the bottom so if it ever stops and beeps, you can flip it over and it says exactly what the beeps mean (one beep means one thing, two beeps means another--which is SUPER helpful!). -color on top clearly shows what mode it is in (blue-ready to go, orange-needs to charge, red-problem to fix-such as emptying the tray). -very quiet. I can work on stuff with it in the room and it does not bother me at all (my dog also does not mind it). -works great on white carpet and easily transitions from my living room to dining room (which has a slight bump). -when its low on battery, it does not die where it is at, it just turns off the vacuum then finds the home doc and charges itself. -just works really well. I run it everyday and I am impressed by how much stuff it gets (especially when it goes under things such as the couch). -if it gets caught on a cord, it usually takes 5-10 seconds but then it stops the suctioning and moves away (releasing the cord or other item). However if you have a small cord you should put it up (and you should regardless, I just noticed it doing this a few times and thought it was neat, but I do try to pick up all cords). What could be improved: -nothing really in particular to this. -It does not work well on anything black, but this is true for all robot vacuums. It sometimes gets stuck when it goes on the black carpet we have with the black chairs (I suspect because it can not detect them), but this has not happened often. My dog has a black mat for her food and water and it always bumps into it and spills the water, but again, this would occur with any robot vacuum. -Also, make sure the doc is against a wall because otherwise it will move and never charge (self explanatory, but I did not do the first time and it kept trying to doc and was just pushing the doc around the floor). -Finally, you do have to dump out the vacuum particles almost every time you run it (if you do a full circle/battery cycle). It is really easy to dump and beeps when it needs to be emptied. Again, nothing really negative, just something to note. Overall, I really like this! It does a nice job cleaning up the dog hair and other things that get on my floor and saves me a lot of time not vacuuming daily. If you have a dog, I would watch them with this first before you use it. My dog was initially scared of it but sniffed it's "butt" and now they are cool and she does not mind it at all. Pleased with this product and would recommend! :) **UPDATE** On another note, Eufy has amazing customer service! I received an email from them addressing each of my "what could be improved" components with more information on the product. Very impressed.
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Reviewed in the United States on August 5, 2018 by CF
Size: E28 FabricCare
Day 2 in use, so consider this a preliminary review. I used the Eufy app to get this onto my WPA3-only home network with no issues. I installed the jeppesens version of the eufy-clean integration from github via HACS in Home Assistant. Now the robot is mostly controllable from within Home Assistant. It looks like there is no way to edit the map to place no go zones, change room boundaries, etc in Home Assistant, so the Eufy app will still be needed for this function. Everything else can be started, stopped, automated, monitored, and alerted entirely via Home Assistant it looks like. Will test "internet out" operations just to be sure though. Clean water bin is just big enough and the side fill flap is just oddly placed enough that it can be a bit awkward to get in a small bathroom sink. A larger utility room sink, large kitchen sink, etc should be no issue. Dirty water tank gets _filthy_, which is better than it being on the floor of course... but think about where you want to empty such concentrated dirty water. Robot itself is fairly quiet even in "max suction" mode, just a bit louder than my ~55dB dishwasher. That is, it is quiet until it gets something big halfway sucked up, then it rattles like a playing card in bicycle spokes. And "empty dustbin" is quite loud, like old school full sized vacuum cleaner maybe ~80dB loud. Enough that this needs to be on the opposite end of the house, or it is not going to be allowed to run while I am sleeping. Robot itself is just large enough that it has a problem fitting between chair legs, in tight spaces, etc. This is somewhat to be expected in a vac and power mop setup like this. It seems to have to resort to a "bump and turn" mode a lot more than I would expect for "AI" buzzword controlled thing. So it is going to get scratches, dust, dirt, etc on its edges quickly and often. Vac performance is decent, but still cannot pick up anything of any size or weight. Does a fairly good job of picking up 2-4inch dog hair, but it will spit out a small cigar looking roll of hair now and again. Mop performance is fairly good, but far from perfect. This will extend the time between a manual sweeping and harder mopping by quite a bit, but some manual follow up is still going to be required. And if you have a bigger or more stubborn spill, this is not likely to get it up in just one pass. Overall it is a good setup and I am likely to keep it. I had sent back a few other models from other brands, so that should tell you something about the relatively quality of this machine.
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Reviewed in the United States on July 5, 2026 by DH
Size: E25 Black
I have to first explain that I have named my E25, his name is now ROB and will be referred to as ROB going forward. ROB has been an amazing addition to our family and yes I said Family. ROB was easy to set up, all instructions were clear and easy to follow. The first day, I followed ROB everywhere afraid he would get stuck on a rug, or would have difficulty making it over the transitions of our flooring. But ROB had no problems what so ever. And honestly, I found myself amazed at the quality and endurance of ROB. He was jumping over transitions, flipping from mop to vacuum at the proper times and would suck up a dog hair bunny from 3 feet away! As a home with 2 big dogs (over 100 pounds each) that looses enough fur to make a new sweater everyday, ROB has done an amazing job! It’s been a week with ROB and I have found that he takes no prisoners, there was an area that I didn’t want him going into because I had boxes laid out, I was lazy and just made a make shift barrier so he wouldn’t proceed through the area, but ROB was persistent and was able to move the barrier so he could do his job. So, if you want a robot that will jump a shoe wall, ROB is your man! ROB navigates around a dog toys, around dog bowls, and can even get rid of the doggy dribbles when they drink. I have ROB set up to vacuum during the day and at night, he vacuums and mops. My 2 dog sons and my family are all happy with ROB as he is quiet and doesn’t scare them. Most days they just watch ROB do his magic on our floors. ROB also cleans himself, he will run home to clean his butt after mopping and will empty his own debris from his vacuuming. I really don’t know how I survived without ROB this long!! I waited 6 months before I finally purchased ROB after seeing his brother BOB in action at my Cousins house. So don’t be like me and wait, just make the purchase. You won’t regret it.
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Reviewed in the United States on April 27, 2026 by Casie Smith
Size: 11S
2/14/2020:. I want to give a shout out to eufy for their stellar customer service. They reached out to me after I returned my purchase and expressed their concern that my experience wasn't totally positive. They offered me a free eufy upright. I accepted their offer and they sent it within a week. (It's a great vacuum. Good for stairs). Not only that but they reached out to me again a few days after I received my vacuum to check on me and ask how my experience was. I am so impressed with their customer service. Beyond impressed. I will definitely be looking at eufy for future purchases maybe even an upgrade sometime. I'm also going to put back all their stars and let it be known that they did not solicit me in anyway to write this or give a five star rating. They really deserve it I think. 1/19/2020: Okay all. I mentioned in my first review that I was doing research. Well i've done my homework and there are better options out there for the same price. The 11S isn't a bad vac at all for a small space. It's a great little vacuum but the navigation is really a deal breaker for me. I took it to my sisters house to show it off and it really cleans well. Took it to my moms house to show it off and it picked up so much dog hair (my mom is ready to kill the dog for how much it sheds) but that navigation thing is terrible. It cleans the same places over and over again and barely touches others. I'm never certain of what has been cleaned and what hasn't. I'm going to be returning my purchase. I hope Eufy really works on their navigation. Honestly its the only thing this little guy is missing. Update 2: okay note to all. Eufy doesn't like sunlight. Weird right? I have a bay window on my kitchen and my Eufy treats the light on the floor as a barrier. Sometimes this can cause it to get stuck and cry out for help. Also, the reverse function isn't that hot. it doesn't like to go backwards and only goes a short distance before stopping. sometimes it just won't move at all. Not very impressed by this little oddity removed another star for having to rescue my Eufy from nothing. Attached a video this time to show you all. Very sad about this, I was so excited for my Eufy. Update: Navigation really needs work. Honestly the bumper/sensor system is very good and functional. But the degrees of rotation that the vacuum chooses when it encounters an obstacle are nonsensical. Auto should work by doing the edges first and then when it reaches the base again proceed cleaning the greater area in parallel paths using the bumpers to navigate around objects in the parallel path. Removed one star for it. ORIGINAL: So after I bought this I started doing some research....i know it's backwards.... And found that this particular model is actually highly rated for it performance despite its low cost. I've run it three times in the luast couple days. It's amazing how much dirt they're was and fur from the kitties. Now the fir does get trapped in the roller brush quite easily but it also cleans fairly easily I think. It does really get under everything m under the lip of the fridge and the cabinets, under the couches, the side tables and the front every table. It maneuvers around objects pretty well. If it's in a complicated area like under a four legged table with chairs all around it can take a second to get to everything and it's not going to be all at once. I think on a full charge it hit everything about four times. First floor of a 1300 sqft townhome. If I was doing it again the only thing I would change is to get a unit that maps the area. Otherwise it's the most silent of all the robovacs and that's a huge plus. Not a bad purchase by any means but could use just a little leg up. Also area rugs might cause a problem if the edges lift up easily. The brushes tend to slip right under the rug and rolls it up under the vacuum. It usually makes it over the mountain just fine but not without some difficulty. Never had it get stuck.
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Reviewed in the United States on January 11, 2020 by Ryan M. Roberts
Size: E25 Black
This is my second Eufy vacuum. I love this robot! We have a large house. It was easy to map the house, and the robot automatically figures out the surface in each area. It's easy to define areas to stay away from, and to create schedules for different tasks, such as only vacuuming, or extra cleaning in a room. The mop works great and cleans itself. It doesn't mop all the way to the baseboards, however, and it's a little too tall to go under the kickboard in my kitchen. I just do a quick sweep there prior to it running. I love that it switches from vacuum to mop, and goes back to the station to clean the mop, empty dust or charge, and then returns to where it was. The water bin is large, but I wish it would notify me when it's getting low, instead of when it is already too low to clean the mop. Minor inconveniences! There is a new app, but it doesn't support my older vacuum, which I'm now using downstairs, so I haven't switched to that.
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Reviewed in the United States on June 10, 2026 by Deb
Size: 11S
I called Amazon again today. Explained the situation and that no one from Amazon or Eufy had returned my calls as they promised. Also after replacing the battery at my own expense it ran 90 minutes again but got stuck everywhere, made this weird ratcheting type noise every time it changed surfaces and finally today just beeped at me twice and died. Supposedly that indicates a seized brush but they all spin freely. This time I just flat out asked them to look at my Amazon account and replace it, as I'm a very good customer. New one will be here tomorrow. I'll do a separate review on that one as it took me forever to find this one again. I'll also let you know if it's a refurbished unit or not. Well wouldn't you know it. I leave a nice review and a few days later, Murphy's law rears it's ugly head. Device is 3 months old a couple weeks out of the exchange warranty and the battery is shot. Runs 5 or 10 minutes on a full charge. Called Amazon to see if since I am a really long standing customer if they'd help me out. Nope but we'll call Eufy support on your behalf and they will call you. We will also call you to follow up. I've been a customer service manager a lot of years and this is where employees can kill you. This Amazon person made me multiple promises. It's been a week no call from Eufy, no call from Amazon. You just turned 4 stars into 1 and if this is all the longer the batter lasts don't bother because the replacements are $25 to $30 bucks depending on the brand. I'm not spending a hundred bucks a year on batteries and this thing should be under warranty. After 3 days I ordered a new battery and Rosie is running again but I'm no longer pleased and the next time I'll buy another brand. If if this battery doesn't last the whole thing goes in the trash and I buy something else. I run this every day maybe the batteries won't take that I don't know. But if you're going to run it every day buy something else. This didn't last long enough at all. I wanted to wait a while to be sure I had a good sampling and could post a fair and useful review. It's been 90 days now. We have two large (bigger than standard) labradoodle puppies. 85 and 50 pounds and they're 1st generation so they shed a lot. They also, being puppies, have tore the yard up so it is basically a mud pit and they wrestle, run, and fight constantly. They put a lot of dirt and hair on the floors and in the air. We run "Rosie" every day. Yes my wife named it. It does an amazing job on our hardwood floors and throw rugs. It gets all the hair and an incredible amount of dust and dirt. What I mean by that is we can run our Dyson or the Shark Pet vacuum and then run Rosie and the chamber will be full of dust and dirt when she's done. It's almost disconcerting to know our very expensive upright vacuums leave so much behind. It also has the unadvertised ability to buff our hardwood floors. They shine when she's done and the beater brush is showing no signs of damaging the finish on our floors. I would disagree with some of the reviews and even the manufacturers assertion that it doesn't work well on dark floors. Our hardwood floors are a dark reddish brown. The device works great on them and as I said when it's finished they shine. We have agreed we will never be without one and love this device. It does everything it has been advertised to do and more. Also it is set to automatic power and runs longer than the advertised time on a full charge. We get about 2 hours and 15 minutes. We've put down an additional 6 throw rugs for the rainy snow season in the path where the dogs run when they come in and the time has dropped to around 90 to 100 minutes. Still long enough to cover everything well and more than once. It does keep going until it needs a charge it doesn't just run and go back to the dock. I've noticed in the open areas like our living room it might hit that 2 or even 3 times. The floors are like glass after that. Now for the negatives, and these are not deal breakers I'm just being fair. The dirt and dust I referred to is new to us. we recently moved from Illinois to Ohio. In Illinois the dirt is black. Here it is red or a very light brown. The vacuum gets externally dirty. It gets covered with dust/dirt and does not look good. The device is black and the dust is light colored and is readily apparent. I don't want to put it away all the time or for company so thats a problem for me and more cleaning which is not advertised so I'm mentioning it. Secondly it needs to be emptied every use or every other use. They are all like that except some of the super expensive robot vacuums so I wouldn't mention it except for my third negative. It is hard to clean from a mess standpoint. Not so much with the pet hair but with the dust. When you dump it the dust goes everywhere. Unless you have an empty trash can so you can get it way down inside when you're done the garbage can lid and sometimes the floor around the garbage can is clearly dusty from emptying the vacuum. The filters need to be removed at least every other running and they are also a big dusty mess. I also don't believe they will last as long as advertised. I have an air compressor in the garage and a hand held electric air compressor and use those to clean the filter. The foam piece I rinse in the sink. I don't think that someone without access to those tools is going to get the life out of the filters thats advertised. The device comes with a set of replacement filters and the rotating brushes. Not the beater bush though. Our unit is 3 months old. I had to replace the filters at about 40 days and tried to make them last a little longer this time but it hasn't worked out. The outside of the device is filthy. I believe this is due to the filters. The brushes have lasted longer than the suggested replacement time. They are 90 days old and still look like new. Last and has been a rare negative. The device will get stuck under things. Once I learned what the obstacles were in our home it was easy to fix. Some areas I blocked with rolled up moving blankets. I pull the chairs out from under the kitchen table to allow room for it to maneuver. If I don't it gets under there and spends way too much time cleaning and trying to get out. I'd rather it spend less time under there so it can do the whole cleaning area and have power left to do it again. I had the problem spots corrected and figured out within the first 30 days. I've read some units have a tape or something the vacuum will sense and avoid. I wish this unit had that but then again at this price point that is probably an unfair expectation. So those are the pro's and con's we've encountered. The con's are all minor irritants and not a reason not to buy the device as all of these devices are prone to these issues except one or two of the very very expensive units. To repeat what I said earlier this device has worked out so well we have decided that we will never be without one and that when the time comes to replace her we will not feel bad about spending the money for a high dollar unit as it is worth it. Time is worth more to us than money and this thing saves us a great deal of time. It does great job, has done no damage to anything, and if it weren't for the clean up issues would be a five star review. I hope this helps someone make an informed decision and I hope you buy one. It's an amazing little machine, stands up to all the reviews, and truly is the best bang for your buck in robot vacuums.
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Reviewed in the United States on January 1, 2020 by itsmeray
Size: 11S
At first, I loved this little thing, and like many named it (Gary). It was impressive how every day it had a tray with a bunch of dust and dog hair in it. In my experience with vacuums and electronics, your product will last much longer if you take good care of it. Before going to bed, I "Gary proof" the house, picking up any random charging cables, socks, etc, and putting the dogs up so they don't have an accident streaked all over the house. I run it early morning at 2am. I empty the tray every morning, which takes less than a minute. Every week or so, usually monday morning, I spend less than 5 minutes to take the side brushes and roller off, and remove any hair/strings. This is probably much more frequently than you HAVE to do it, but with my experience in maintenance, I prefer to do it more often and regularly. He's a dumb vacuum, and occasionally gets stuck in weird places, or will grab a low hanging wire and get caught up, but it's a good thing he's dumb. We don't have true AI, so spending a ton on special sensors and algorithms to pretend that a smarter vacuum has been created, is just a waste of money. When looking at reviews for all the major robovac brands, they all get stuck occasionally and have issues. I don't care that Gary sometimes gets stuck, because it doesn't happen too frequently. A dumb robovac that runs regularly and has a decent battery life will make for a much cleaner home, and with much less effort, than vacuuming on my own. Will it sometimes miss a spot? Sure, but it eventually gets to it. Are there spots it can't get to? Yes, but those are spots that I'd have to get the hose and attachments out for anyways. Up to this point, I'd give this vacuum 5 stars. It's effective, and at a much more reasonable price than the competition. It does everything I need, and doesn't have a lot of extra crap thrown in there. So, why 3 stars then? It's not durable. There is something wrong in the design of the roller brush, or the containment of the roller brush, and it starts making a loud vibrating noise after a few months. I purchased it in May of 2018, and by August it was ridiculously loud. After a bunch of minor tests, that were already answered and then ignored in my initial email, and video I provided of how loud it was, they agreed it was faulty. Anker/Eufy sent me a replacement, after I sent mine back. They let me keep the extra accessories, such as the spare side brushes, the hair removal tool, and even the charging dock, and sent me what appeared to be a brand new robovac, packaging and accessories just like it ships from Amazon. It's now February, and the robovac is making the same loud noise again. I've done some extra troubleshooting on my own, and narrowed it down to the brush, or brush holder. As it's spinning, it's vibrating. All of the contact points are plastic. If I take the brush out, it stops vibrating. I put some thin foam tape between the enclosure of the brush and the plastic casing that holds it in, to see if the brush was causing it to vibrate. That didn't stop the sound. It's like the brush is bouncing around in it's housing. It looks like the spinning brush wears away at the casing that holds it in place. I don't see a way to repair it on my own, or to prevent it from happening again. We'll see how Anker handles the issue the second time. I'm not looking forward to dealing with it again, and I'm hesitant to recommend this to anyone else. It's important to note that I work from home, so running it during the day isn't conducive to me working. When it's working properly, it's quiet enough to run at night and not be a bother. It will randomly bump into a door sometimes, so if you're a light sleeper, it may be a problem, but for our family it's not an issue. It's only after it degrades and start making loud noises that it's an issue. If you have an empty house during the day, and it wouldn't matter if it's extra loud when it runs, then it would work perfectly fine. Edit:3/11/19 After some confusing back and forth with Eufy Support, they've replaced my 11S with a 30C and even through in some boundary strips. Initially they just wanted to replace it completely, but I was concerned that it would just break again, this time out of warranty. They offered to upgrade to the 30. After I sent it, another support rep reached out saying they should have troubleshot the robovac more, and not to send it in as they had some other tests to do and if that didn't fix it, they could fix the roller. I let them know I already sent it. I asked if they could send me a 30C so I'd get wifi as well, and I'd pay the difference. They said they couldn't ship the 30C because Amazon owned it. While waiting for my robovac to get to them, the 35C came out, and it's listed for sale from their website. I asked if that could be sent instead, and again I'd pay the difference. They said they couldn't, but they'd ship an extra boundary set for the confusion earlier. I thought they said they'd send the 30C, not the 30, so responded that would be good. They cleared it up saying they could send the 30 with an extra boundary strip or the 30C without it. I chose 30C without. They decided to send the 30C and the extra boundary strip! Way over the top support, trying to make me happy. I wasn't upset, or being a jerk about it, they were just extremely accommodating. Based on the great customer support (minus minor confusions, some on my part) I'm bumping it up to a 5 star. They really stand behind their products. I also think any future issues that may pop up can be alleviated with troubleshooting the roller brush, which should be replaced occasionally anyways.
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Reviewed in the United States on February 17, 2019 by Eric Jones