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eufy Robot Vacuum 11S MAX, Super Thin, Powerful Suction, Quiet, Self-Charging Robotic Vacuum Cleaner, Cleans Hard Floors to Medium-Pile Carpets, Black

4.2 4.2 out of 5 stars 11,446 ratings

$259.99
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Purchase options and add-ons

Brand eufy
Model name Robovac 11S MAX
Surface recommendation Hard Floor & Tile & Medium carpet
Special feature Super-Thin Robot Vacuum, Quiet, Self-Charging
Colour Black
Product Dimensions 32.5L x 32.5W x 7.3H Centimetres
Controller type Remote Control
Included components Batteries included
Filter type Washable
Battery life 100 minutes

About this item

  • Compact and Quiet Operation: With a slim 2.85" profile, the eufy robot vacuum operates quietly, offering a comprehensive clean without causing a disturbance, making it perfect for use at any hour.
  • Extended Cleaning Performance: Capable of running up to 100 minutes on hardwood floors, the eufy vacuum robot provides powerful, consistent suction for a thorough clean at a noise level similar to a microwave.
  • Intelligent Cleaning Power: The eufy robot vacuum's BoostIQ Technology automatically increases suction power within 1.5 seconds when needed, ensuring top performance on a variety of surfaces.
  • Superior Protection and Efficiency: The eufy robot vacuum comes with an anti-scratch tempered glass-top cover, infrared-sensor for evading obstacles, and drop-sensing tech, ensuring a safe, efficient clean while self-recharging to stay ready.
  • What You Get: RoboVac 11S MAX, remote control (2 AAA batteries included), charging base, AC power adapter, cleaning tool, 1 side brush, user manual.

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From the brand

Product guides and documents


Product Description

Rest Easy, Relax with eufy

Rest Easy, Relax with eufy

Slim, Strong, Quite

T2126

Ultra-thin 2.85" body that glides under furniture. Kick back and relax as RoboVac quietly cleans your home.

Versatile Cleaning Modes

T2126

Use for low- to medium-pile carpets.

Large wheels roll over carpets and climb over door ledges to get to the mess.

Versatile Cleaning Modes

Use for hard floors

A cleaning mode for every scenario. Ensure an effortless, thorough cleaning while you relax.

Clean smart, live smart.

Clean smart, live smart.

3-Point Cleaning System

Three brushes and strong suction power effectively loosen, extract and vacuum dirt to give a superior clean.

Drop-Sensing Technology

Drop-Sensing Technology

RoboVac uses advanced sensors which detect drops to avoid falling down stairs and off of ledges.

T2126

Tread Lightly

Anti-collision sensors ensure RoboVac doesn’t bump into objects around the house.

T2126

Smart Return

Never worry about running out of juice. RoboVac automatically returns to HomeBase when the battery is low.

Explore More eufy Options

11s max

11S MAX

1

X10 Pro Omni

1

S1 Pro Omni

12

C20 Pro Omni

11

X8 Pro SES

L60 SES

L60 SES

2

L60

Customer Reviews
4.2 out of 5 stars
11,446
4.4 out of 5 stars
806
4.4 out of 5 stars
141
4.5 out of 5 stars
49
4.2 out of 5 stars
276
4.1 out of 5 stars
1,480
4.1 out of 5 stars
1,480
Price
$259.99 $1,099.95 $1,999.99 $899.99 $899.99 $579.99 $399.98
Feature Type
Bounce Navigation iPath Laser Navigation 3D MatrixEye iPath Laser Navigation iPath Laser Navigation iPath Laser Navigation iPath Laser Navigation
Suction Power
2,000 Pa 8,000 Pa 8,000 Pa 7000 Pa 4,000 Pa ×2 5,000 Pa 5,000 Pa
Control Methods
Remote Control App/Alexa/the Google Assistant App/Alexa/the Google Assistant App/Alexa/the Google Assistant App/Alexa/the Google Assistant App/Alexa/the Google Assistant App/Alexa/the Google Assistant
Max Runtime in hard floor
100 mins(Standard Suction) 173min(Standard Suction) 216 mins(Standard Suction) 132 mins(Standard Suction) 180 mins(Standard Suction) 120 mins(Standard Suction) 150 mins(Standard Suction)
Station Type
No Station Self Empty &Auto-Clean Station Self Empty &Auto-Clean Station Self Empty &Auto-Clean Station Self Empty Station Self Empty Station No Station
Wifi Connected

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eufy Robot Vacuum 11S MAX, Super Thin, Powerful Suction, Quiet, Self-Charging Robotic Vacuum Cleaner, Cleans Hard Floors to Medium-Pile Carpets, Black


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eufy Robot Vacuum 11S MAX, Super Thin, Powerful Suction, Quiet, Self-Charging Robotic Vacuum Cleaner, Cleans Hard Floors to Medium-Pile Carpets, Black
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Price$259.99$149.99$369.99$289.99-55% $317.51
Was:$703.07
$899.99
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Get it by Thursday, Nov 7
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4.2 out of 5 stars
11,446 global ratings
Eufy11sMax "The little giant" 4.1star after 1 year.
4 out of 5 stars
Eufy11sMax "The little giant" 4.1star after 1 year.
The reason I bought this was because of the simple remote, low profile and I have multiple floors with different types of flooring. I hate using app based systems anymore after update and 5g issues..Eufy11s max makes stunning vacuuming for 100 mins in boostiq mode every time and would always go back to charger even though it takes its time on my complex floor. I empty it every other day and it is amazing to see the amount of dust it picks up.I had a black carpet with red designs and Maxy had no issue navigating.It avoid steps and won't bump to most surfaces except Choc chair legs and steel railings but interestingly it would edge clean them..Its noise level is low on a hard floor and carpet but when it navigates on tile flooring I could hear the transition bumps which is bit annoying..It would get covered in static dust overtime.The picture attached is after 1 year. I am still using the original HEPA filter and side brushes.So far the biggest flaws I experienced are1. I prefered to run this on alternate days rather than present everyday schedule. But I got to admit that it picked good amount of dust and this flaw may or may not be an issue for some..2. Brushes and the holder got out of shape in 2 months. Not a serious issue.3. The remotes digit started disappearing. I rarely use it.4. Long human hair will always get caught on all 3 brushes and is a pain.5. On automatic mode it rarely cleans close to walls. It bounce back straight away after seeing a wall rather than getting close and cleaning.6. I believe the 2000psi is a hoax , 11s,11smax and 11s plus probably only have same suction in automode which we use quiet often.7. In just15months, the battery is dying. New batteries cost almost 1/6th of device. Parts are xpnsv comparing roomba.Tips:-1.Keep it close to a wall with no obstruction to help it go back to charger.2.If possible clean the bin n hepa filter quiet often to enjoy high suction.3. Move chairs n other closely packed items away to help it to help you best.I recommend people with dust allergies or kids should own one robotic vacuum and eufy11s max won't disappoint.It started acting weird after my daughter stepped over it accidently. After checking everything I gave it a decent kick and it is ok since..😆😆
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Top reviews from Canada

Reviewed in Canada on August 15, 2024
Verified Purchase
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If you’re constantly sweeping hardwood floors for accumulated pet fur and dust, this pretty remarkable little device will do much of that job for you. It isn’t perfect but it’s very good. It senses steps and won’t fall down them. If it can get under a bed, it can eventually find its way out. After two hours of randomly travelling around the floors of your home, it will be filled with dust, dirt and fur. Read the instructions carefully before you use it, clean out its dustbin every time. if you followed the installation instructions for the charger, it will find its way and recharge itself when its batteries run down. Water is its enemy, don’t leave water in its way. And get all small loose items off your floor first. For the money, it’s pretty amazing.

It does have one shortcoming. When I remove the dustbin and filter, I wash them and leave them to dry. It’s easy to start the device after it has recharged, sometimes a day or two later, while forgetting to reinstall the dustbin. It will then run around the house cleaning the floor and blowing the dust out into the air. It needs a sensor to prevent this.
Reviewed in Canada on October 14, 2024
Verified Purchase
My wife wanted something to make it easier to clean under the bed. We bought the 11S Max based on positive reviews and it has lived up to those reviews.

It is very basic but it does the job. No mapping of the house, no self emptying feature, no app. All we do is put it into a bedroom, close the door and let it do its thing and judging by the amount of stuff it sucks up, it does it very well.

The random motion , as opposed to straight lines, means that it might go over the same area more than once and in different directions. This gives better cleaning. When the battery gets low it will return to the base charger as long as the signal from the base is not blocked by e.g. walls.

Out of curiosity I set it going on our upper level and was impressed that it did not fall down the stairs. It gets a little way over, the sensors register that and the machine then backs up.

Emptying the collector is easy but removing fluff and hairs from the roller is a bit of a pain. The tool provided helps but even so it is not easy. We considered return the 11S for an L60 with self emptying but that only works with an app and my wife did not want to bother with that. For now. But, the thought of a more powerful machine machine that maps the whole house may eventually be too tempting to resist.
One person found this helpful
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Reviewed in Canada on October 22, 2024
Verified Purchase
Picks up well. Programmability awesome.
Reviewed in Canada on November 9, 2023
Verified Purchase
Update, May 15, 2024: Today the new battery lasted 100 minutes.

Update, May 8, 2024: I sent an email to the manufacturer explaining the battery situation and they sent me a new battery under warranty.

Very poor manual because of very small illustrations which are not the same as on the robot, plus does not explain how to delete a setting. A fairly good robot though, cleans well but tends to remain in larger rooms, it starts in the living room of 1,500 sq.' apartment, manages to find the bedroom, but once it exits the bedroom it does not go back to finish the bedroom and washroom. My fix for this is to put it in the bedroom and close the door and let it run until it finishes the bedroom, then take it to the living room. It does not clean near the charging station. Very quiet, bumps very gently. When it is working beside you, you can still hold a conversation.

It is very easy to clean the waste bin, roller, wheels and filter. I clean it and wipe off the machine each time I use it, which is twice a month. I find this vacuum very easy to use and clean. It usually runs for about 1.5 hours, then recharges.

For $200.00 Canadian it is an okay value. It does not have the headaches and problems associated with programming using cell phones. I understand why manufacturers went that route, but it isn't good.

TIPS: do one room at a time. The reason is that the robot learns the room and wastes less time learning multiple rooms. Give it plenty of time to fully recharge between uses. CLEAN IT, CLEAN IT, CLEAN IT after each use - remember to do the wheels, they pop out so easily.
12 people found this helpful
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Reviewed in Canada on June 13, 2024
Verified Purchase
I bought this after Wirecutter recommended it as its "budget pick." I don't know what kind of home the Wirecutter reviewer lives in, but I guess they don't have any: low couches, floor lamps with beveled feet, speaker stands, etc. So, if your house is mostly empty, there's never anything on the floor that could obstruct this dumb robot's path, then go ahead — the cleaning action was mostly okay.

But if you have any of those things in your house, its useless. Since it doesn't come with any sort of learning function or digital ability to tell it never to go somewhere (like: "Don't go underneath the couch! You get stuck there!"), the actual use value of this thing is very limited.

The user manual suggests a remedy for these problems: you are supposed to "block" those no-go zones by placing objects in front of them. Okay, sure — but if I have to spend any more than a couple of minutes preparing my house to be vacuumed then I may as well use an old-style vacuum myself.

Since the whole point of getting a robot vacuum is for it to clean *unsupervised*, this product is a fail.
2 people found this helpful
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Reviewed in Canada on October 22, 2024
Verified Purchase
Fonctionne très bien
Reviewed in Canada on September 8, 2024
Verified Purchase
Item was sold as new, but there was already hair in the unit, the filter also contained a decent amount of dust.

Update: Anker customer service reached out to me and resolved the situation.

The vacuum itself works well; it's so good to see something that doesn't require an app or internet connection to work. I don't mind the random navigation - I knew what I was getting into, and it's perfect for an apartment. It could use improvement in edge and corner cleaning but those areas are easy enough to get with a broom or another vacuum anyways, and those are problems most other robot vacuums also struggle with.
One person found this helpful
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Reviewed in Canada on September 29, 2024
Verified Purchase
Replaced my dead Deebot with Eufy...so much better..very quite with good suction. Will roam for a long time, so far for almost 2 hours at which point I sent it back to base.
One person found this helpful
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Top reviews from other countries

Avid Reader
5.0 out of 5 stars Great value! Eufy is hardworking!
Reviewed in the United States on July 11, 2024
Verified Purchase
I just renovated a 1960s rancher, and had to move in while reno was still ongoing. Needless to say, there was and is lots of dust. To add to the mix, I have three cats whose favorite hobby is shedding. A 60 year old, self-avowed cat lady, I could not keep up with the dust and hair. I had a Shark robo vac which I used on a carpeted floor. It did not do a great job, and I was constantly getting messages that Lurch's sidewheel was stuck, usually under a king sized bed. I would have to rake it out from under with a golf club. The Shark also left cat hair in the carpet. I took the Shark, along with my three cats, to my Florida condo where there was no carpet. The Shark still got stuck, could never find its dock, and just didn't do a great job cleaning.

This Eufy beats that Shark like a drum! I have no carpet in this house, but do have a couple of washable rugs. Eufy does a great job on the LVP, hardwoods, and rugs alike. The only time it has gotten stuck was when it sucked up an electrical cord. Its bumper is more sensitive than the Shark's, so Eufy doesn't push lightweight items around.

Eufy was easy to set up, and did a good 30 minute run right out of the box. There's a remote control with it, and a nifty tool for cleaning the brush. The instruction book is a bit vague on what all you can get it to do, and the icons in the book didn't match up with the ones on the remote, but I haven't used the remote for it yet, as it runs perfectly by just pushing the go button on Eufy's back.

It sucks up and collects all the cat hair it can find, and is still getting its share of construction gerbis. I thought I would never be able to walk barefoot in this house, but Eufy has changed that!

Eufy finds its dock when the charge gets low. Its low profile enables it to get under sofas and chairs.

The collection tank is easy to empty and clean. The brush is easy to remove, and the tool makes for easy and quick cleaning of it.

Eufy is reasonably quiet.

My only complaint is that Eufy doesn't sense stairs and drop offs like my old Shark. The first time I turned Eufy on, it raced straight for the sun room doors, and over the edge-a good 6 inch drop-and landed on its back like a dying bug. The construction is strong enough to withstand the drop, but I block off that opening when Eufy is now on the job.

Eufy's full charge gives a long run time that will clean a good 1000 feet of space.

Overall, Eufy is a powerful little vac, and well worth the price. There's no app, like with the Shark, but you can set it to run with the remote.

If you have hard floors and pets, don't hesitate to get this thing!

Caveat: I cannot attest to how much cat weight Eufy will support, as I cannot get mine to ride it.
Barefoot Guy
5.0 out of 5 stars A watch bot never picks up that lint, but give it time!
Reviewed in the United States on May 18, 2021
Verified Purchase
This review is very similar to my 11S+ review -- I loved the 11S+ so much that I bought the 11S Max for upstairs, wanting the higher suction for use on carpet.

Lots of negative reviews from people who seem to have not understood that this is a random motion robot. Keeping your expectations in line and realizing that even with a random pattern the whole house will eventually be covered at least every few days, which is way more than I ever vacuumed manually.

Another source of bad reviews is the frequent comment that it is "lacking" internet connectivity. For me that's a huge bonus as I didn't want an internet connected device because many consumer grade IOT devices have very poor security.

I bought two similar models, one downstairs and one upstairs. We have dark laminate flooring downstairs and it felt like even if I vacuumed regularly there'd still be stuff showing up shortly after I finished. I'd do a whole house vacuum every week, but it still felt like I couldn't keep up, so I initially bought the 11S+. I loved it so much that I bought this 11S Max for upstairs just a short time later.

Since the 11S+ is so similar, I'll combine details from both in this review as they're relevant here too.

For context, this is in a household with two long-haired adults, no kids, no pets.

Downstairs on laminate and tile flooring with only an area rug and fairly basic furniture everything works perfectly. The initial robot got stuck once on day two in a corner where I had some chairs stacked up and gained the nickname "Waldo"... "Wall-e, the garbage collecting robot... got stuck... where is he? Where's Waldo?!", but hasn't gotten stuck anywhere since. It reliably finds its way home every day. Every day at lunchtime I come downstairs from my home office and empty the bin and I'm shocked by how much stuff is in it, wondering how I ever lived in such dirty conditions! haha

My wife and I agreed that this is the best thing ever, so I bought another for upstairs, which has carpeted floors. Things are a bit different there. Nearly every single room upstairs has an obstacle that it doesn't like, and I've had to do a LOT more robot-proofing.

It found its way into the walk-in closet and got tangled on a shirt that had a string fringe and got stuck. It gets up on the legs of the clothes drying rack in the bedroom and makes a LOT of noise going over them, repeatedly. It got stuck under the bed in the guest bedroom that had JUST enough clearance to get under, but not back out. In the home offices it gets hung up on desk legs. In my office it gets up on the legs of my music stand. Once it started beeping after going a bit too far over the edge of the stairs. The downstairs robot can go about its business daily w/o any problem, but the upstairs one has a problem in every single room. I'm gradually finding ways to deal with the problems room by room (such as 3d printed bumpers on the desk legs), but it has been somewhat of a challenge.

Like the downstairs robot it's SHOCKING how much crap the thing picks up every day, even after a deep vacuuming with our Sebo D4. Being as this one gets stuck so often it got the nickname Dodo. I still love it, it keeps things cleaner, but does require a lot more babysitting. Over time I expect it'll get better as I continue to robot-proof to keep it away from areas where it shouldn't be.

As for the long hair mentioned before: On day 1 I tested before a deep-vacuuming, with about 2 weeks of accumulation and it got REALLY tangled with hair, but I did a deep vacuuming by hand and since then it has kept up enough that hair has not been a problem at all.

Pros: Very quiet, good coverage (I seldom see a missed spot), picks up a crazy amount of stuff even when you think there's nothing for it to find, cheap maintenance parts, easy setup, no apps nor wifi connectivity to phone home and potentially compromise your home network.

Cons: None if your house is robot-proof, some people may have zero problems, some might have a LOT of problems.

The filters for the MAX are a bit harder to find than the non MAX models. I did try to swap the dust bins between my two units and they are interchangeable. I'm not sure which filter is better than the other, but I might eventually replace the dust bin with one from an 11S so that I can use the more commonly available filters. I suspect that the filter change is part of why the MAX models have a higher suction rating as the simpler filter probably has less air-flow restriction, but I do like having the pre-filter on the other unit as it's easier to keep clean.
J. Whiteside
3.0 out of 5 stars The Best Cat Toy That Cleans Even Complex Home Layouts
Reviewed in the United States on July 2, 2019
Verified Purchase
I always thought these robot vacs were kind of a silly gimmick, too expensive for not enough gain. After a couple friends raved about their robovac's, I made excuses like "My home layout is too complex!" and "I'll need three of them to vacuum my home!" But, the robot wars have made them cheaper and better, so I decided to finally give in on a good deal with this new model from a well trusted brand. I wasn't willing to pay for units with home mapping features and no-go zones, but with this unit, I don't feel I even need it. Turns out, I am absolutely thrilled with the performance and price point of these Eufy's.

There is little doubt this unit is just slightly smarter than a bag of hammers. Thank goodness I can make it do it's work at 4AM when I don't care how many times it goes over the same spot or misses something that is just "right over there you stupid bleeping robot!" But, day after day, this hunk of electronic sensors strapped to a vacuum comes home with a bin full of stuff. I'm at the point where I don't even know where it gets the stuff and I'm seriously questioning my ability to clean my house. And also somewhat ashamed of the filth that I've lived with and didn't even know about.

It goes places it probably shouldn't and if you have any degree of OCD, it will hurt your brain to watch it. It goes under furniture and shelving where it barely manages to escape, plays ping pong with table/chair legs for a bit and it has an inexplicable infatuation with the clear storage totes under my guest bed. It'll really like one area/room for awhile, but then will go elsewhere, only to be back 2 minutes later...and you're like, "Well, that was the *least* efficient way to do that. Whatever, a goldfish is smarter than you." Whenever I'm in the kitchen doing something, it has the whole lower floor it could be cleaning, but it will insist several times on cleaning the spot right under my feet. It loves to chase my cats and in turn, my cats will engage it in a battle of home domination, swatting it and trying to eat the spinny brushes while it charges. One cat will lay on the lower step and lazily swat at it as it goes by. Just when you think there might be the slightest sense of intelligence and you're having this "It's alive!" moment, it reminds you how dumb it is by gently ramming itself into a piece of furniture. I don't know how it does it, but despite looking like it couldn't find it's way out of a paper bag, it somehow manages to find home base for charging most of the time.

But, it gets around, even in an ever changing layout. It deals with my wood floors, several area rugs and a section of medium pile carpet without much incident. It hasn't once tried to go over a stair in my home. It gets probably a good 70%+ of a complex, 1,000 square foot U-shaped layout of my main floor, with plenty of furniture making navigation much worse. But, it does that 70%+ every day and I don't even have to think about it. Based on the sheer amount of cat hair and dust this thing picks up daily, I'd say the suction and pickup mechanisms are pretty good. I can't tell you if they're better than older Eufy or other branded units, but the spec's say so.

I was worried about how much of my lifestyle I'd have to change to adapt to this thing. Turns out, very little. I can still leave stuff around if I want and it won't try to eat everything in its path. It does occasionally try to commit robot death on various cat toys the kitties leave about, but that's maybe one 1 out of 10 times it needs saving. I have a rug in my kitchen that it loves to push into a pile, but that's only a minor annoyance and doesn't cause it harm. I have to be careful not to leaving charging cords and such about. Once every couple weeks it won't find it's way all the way home, but it's usually pretty darn close to the charging station by the time it dies. I thought it might become inconvenient to "save" the unit from it's self-inflicted stupidity, but the value it provides exceeds the inconvenience.

I can see why people like these things. And there's a good chance I may buy the three I need, maybe this one or maybe others. But, for now I'm pretty happy with this one. It's a 5 out of 5 cat toy and a pretty useful home appliance that will save you time and improve your home's upkeep. I'll update this review with any significant changing opinions, but for now this "dumb, smart thing" gets 5 stars.

Update: About 4 months after running this thing daily, one of the side brush motors started to malfunction. Normally, a product malfunctioning that soon would irk me to reducing my review stars immediately, but I sucked it up and contacted support. I requested, specifically, to do a self repair of the brush motor right out of the gate. They didn't request for me to send it in for repair, demand an expensive cross shipped replacement or question my self-assessment to repair equipment that I owned. They just told me they have the part in stock, requested I send them a video of the problem, asked for the address and put the brush motor in the mail. They then confirmed that if this didn't make it work right, they would still support me until it did. They worked with me exactly how I wanted them to, stood behind their product 100% and for that, not even a single star will be reduced from my original review.

Update 2: I knocked two stars from my review. Not because of the unit, which is still great, but because of the replacement air filters. They are $11 for TWO of them! That's nearly 3 times the price of the previous filters, or about a $65 annual operating cost when changing them out once a month. IMO, that's simply too expensive for a vacuum and even my high end upright isn't nearly that expensive to operate using *HEPA grade* vacuum bags. Not just that, they are incredibly terrible for the environment by requiring you to buy the substantial plastic filter housing every time. Had I known this at the time of my purchase, I would have selected a different unit - probably the initial version of the 11S.

Final Update: I've decided to just let this thing die a slow and painful death. Both of my side brush motors went out, as did the one that I replaced. It's still marginally effective without them, but definitely not as good as having them. Eufy's support reached out to me several times, which was great, but I have better things to do than rip this thing apart every few months to fix plastic parts that will fail again in 3 months. I expect more from something I'm paying $200+ for, definitely not three of the same exact failures within a year. Oh, and there's much cheaper 3rd party filters available for this guy now.
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Andrew Bean
5.0 out of 5 stars Well worth the money for saving time, energy, and effort
Reviewed in the United States on January 13, 2022
Verified Purchase
This (really long) review is for the Eufy 11S Max robot vacuum (Robovac). Please note “Max” vs regular 11S. They may look the same; but the Max uses a different filter and has the higher 2000pa suction. Otherwise the functions and options (other than suction choices) are the same. I've used the 11S Max for the last month on my low pile carpet (about 80% of the roaming area) with the rest being tile or linoleum flooring. It has been quite fascinating to watch so I've actually put about 85-90 charge cycles on the unit over the last month (yes, three times a day on most days and it's still finding more dirt/dust than I would expect).

Right up front, I'd definitely buy another when it comes time to replace this one. After comparing how I vacuum my flooring, especially to pick up my biggest carpet enemy; short stray bits of dried grass stems, the “random” wandering of this vacuum model made more sense to me than the other fancier choices. Most vacs do a good job with dust, dirt, sand, cheerios, etc. but these stem pieces are only picked up by a vacuum when it comes at the stem with the brush roller pretty much parallel to the stem. That means random directions will more likely get these pesky problems than an organized back & forth cleaning approach. Granted it may take a few cleaning cycles or several passes over the same area during one cycle; but since the Robovac has completed its first 5-6 cycles I rarely find them anymore or if I do spot one it's not for very long.

Robovac is a big time saver as well as an energy saver for me. I would use my canister vacuum about an hour each week for routine cleaning and once a month for 2+ hours to do a more thorough cleaning. A watt-hour meter indicated that my canister vacuum used 5-6 kw-hr of electricity each month. Robovac uses about 12 watts continuously for about 4 hours when charging (surprisingly less than the 5-6 hrs listed in the manual; but it is brand new). Once the battery is charged, the power consumption drops to about ½ watt. When Robovac is away cleaning, the charging base uses just ¼ watt for the homing beacon. So if used just once a day; Robovac would only use about 60 watts per day. That means once-a-day cleaning would only use 1.8 Kw-hr energy per month. By letting Robovac take over the regular weekly cleaning with once a day operation (or less), I'm able to cut my electric bill by an easy 3-4 kw-hr/month.

With that said, there are a few things that I think need improved:

First, there should be an interlock on the dust bin – Robovac will merrily go off about it's scheduled cleaning cycle without the bin installed! So if removed for emptying; don't forget to re-install the bin before the next scheduled operation. Plus, I noticed on a couple occasions, that I wasn't paying attention and I left one corner was about 1/8” out from fully inserted. Not sure if that will cause suction leaks; but you need to make sure the bin is completely inserted.

Second, you can't select “max” (or any power level) when using the remote to manually clean an area. It appears to only operate on “standard” suction with manual operation (i.e., when Robovac is not running a regular cleaning mode and you chose to override it's direction). In addition, if you select the remotes' edge or spot cleaning modes it will automatically go to “max” power for the duration of that mode and you can't choose IQBoost or standard power level on those selections.

Third, I don't know why the 20 minutes for edge cleaning or 30 minutes for quick cleaning was selected. Robovac can make it about 60-70% around my home in the 20 minutes of edge cleaning. If edge cleaning mode was permitted to run until it made a trip all way around and back to the charging station where it could dock to finish that mode would work better. An alternate solution would be if I could set the cycle time for edge cleaning and quick cleaning modes. Plus I'd like having an option for it to simply stop when the time is up rather than automatically returning to the base. When I want just one room cleaned; I'll set Robovac to auto or quick mode in that room, then close the door or put down a barrier, and return later to stop it manually and take it back to the charging base. If I don't return in a timely manner Robovac will be trying to locate the charging base and running the battery down.

Fourth, Robovac cleans edges using only its right side pretty much all of the time. It would be helpful to have it randomly choose using either the right or left side whenever edge cleaning. I watched it edge clean a carpet/wall area three times going only in a counterclockwise direction (right side) and it still didn't pick up all the dust bunnies. I used manual control with it hugging the wall on its left side and it picked them up with no problem. Also, be aware that manual operation, when Robovac is not already working in a selected cleaning mode (overriding current movement), only works while the remote buttons are pressed. Robovac stops all functions shortly after a button is released when used manually.

Fifth, I really don't need to run Robovac on a daily schedule – there should be a weekly scheduling capability even for the least expensive robot vacuums. It shouldn't be that difficult or expensive to update this model to correct this issue. Even if it's the same set cleaning time, every day for the selected days; just give me the ability to schedule cleaning cycles one to seven times a week.

Sixth, when the battery runs low, Robovac can take forever, if it makes it back at all, to the charging base. I will routinely go looking for it if I haven't seen it return within 10-15 minutes after the approximate cleaning time has passed. The age-old solution for solving a maze (your home from Robovacs' perspective) is to constantly follow along obstacles using just one side (Robovac does recognize when it's circling something like a coffee table and adjusts accordingly after a 360 degree rotation). This method is how Robovac tries getting closer to the charging station when it's more than about 15ft away and not in line-of-sight (the charging base emits an infrared signal for homing action – make sure you keep Robovacs' bumper and the base clean). Sometimes Robovac occasionally gets diverted or the software tells it to try something different) and it will go off in another (often wrong) direction (extremely frustrating!). I highly recommend observing Robovac perform it's return operation from various areas in your home. I ended up placing a 2x4 along the end legs of my sofa as Robovac was consistently going along the side skirt, under the skirt at front of the sofa, then around the front leg exiting the side of the skirt, and then heading straight across the room. It would then go thru three other rooms and come back to the sofa again. The 2x4 forced Robovac to continue edging under the sofa, along the back wall, and out the other end which has an end table that mimics the 2x4 at the opposite end. Before using the 2x4, Robovac took well over an hour to get back to the charging base (it eventually changes up it's routine, usually after three tries) and required 5 hrs to recharge. With the 2x4, Robovac has been able to get back from the far end of my house to the charging base in under 20 minutes very consistently. While the ability to improve Robovacs' return mode is really limited to what you can do, the key point I'm making here is that the battery will always give you more charge cycles (longer life) before needing replacement if you can get Robovac back to the charging base as soon possible.

Seventh, pay attention to the thin rubber wiping strip on the brush guard. After 60+ cycles I noticed the ends of the thin rubber strip (about 1/16” of it's height) were tearing away. I believe this was most likely due to moving back and forth over edging from tile/linoleum to carpet or maybe due to the floor mounted furnace registers in my home. I simply trimmed the torn bits off to keep them from getting caught by the brush. After about 100 cycles I noted the rest of the 1/16” strip was now gone. This impacts the tile/linoleum cleaning far more than carpet; but it is something to watch for. I highly recommend checking the rubber strip during brush cleaning and purchasing a brush guard replacement as part of a maintenance set. Hopefully the manufacturer will improve the thickness or type of material used to prevent or at least reduce this problem occurring in the future.

Next, a few helpful hints I've learned or didn't find in the owner's manual:

The “bowl” shape on top of the charging base with the white LED is just right to hold the remote control, button-side up. However, I prefer to turn remote controls' button-side down to keep them cleaner so it's up to you if you use it or not.

I've had a few occasions when Robovac actually bumped into the charging base so it was no longer sitting square against the wall. This will impact it's ability to find the base when the battery is low. I took a used rectangular-shaped one quart motor oil bottle from my recycling bin, cleaned it thoroughly, and filled it with sand. It's now a 3-4lb weight sitting on top of the charging base. I haven't had the base re-positioned since adding the weight. Normally Robovac does a good job avoiding the charging base; but not always.

Robovac “parks” about 1/2” away from the charging base tower. If you are careful, you can swipe a cloth over the bumper sensors to clean off any surface dust that has collected (always seems to be some); however, be careful as Robovac might activate while you are doing this. You might also get a solid red indicator without any beeps. This error isn't described in the manual; but I've found if I just lift Robovac off the charging base for few seconds and then replace it, it will change back to the charging orange color. (I suspect the solid red indicates a sensor error) It's also quite easy to remove/replace the dust bin during charging. Unfortunately you will need to flip Robovac on it's back to remove/clean the side and roller brushes as well as the bottom IR sensors and charging contacts, so remember to turn Robovac off with the topside button before doing this or get used to it trying to start up while you are cleaning it. Also make sure the blue/orange indicator light is on when you reposition it on the base. Sometimes Robovac will remain off rather than return to charging mode.

After two or three cleaning cycles I'll do a regular check on the all the brushes and swap left and right side brushes when they are re-installed; seems to straighten and make them work a little better, maybe last longer too.

Oddly the remote control spot clean button symbol and the manual indicate a clockwise spiral for the cleaning operation; but when I've selected it, Robovac has always used a counterclockwise rotation.

If the side brushes happen to “hang up” on something, Robovac will stop spinning them while it maneuvers around the obstacle and then restart the brushes when it thinks it is clear. Don't assume there's a problem when you see this unless Robovac beeps and the indicator turns red.

The flat handle end of a spoon or fork works great for prying the filter free from the bin for cleaning. Every time I have tried using my fingers; it pops out tossing dust/lint everywhere.

The IQBoost mode doesn't seem to change going from hard flooring to low pile carpet or vice versa in my home. I think this is because the low pile carpet just doesn't cause enough “drag” for it to recognize that it could adjust the suction level. (I'm still not clear as to whether there's just two suction levels or if Robovac can vary linearly between the two) While the manual indicates a 40 min run time in “max” mode with medium nap carpet, I'm obtaining about 60 minutes with my low nap carpet. I do find the “max” mode clearly picks up more dust. I ran Robovac 20+ times on IQ mode before switching to “max” for its scheduled operation. The filter has clearly shown a thicker layer of accumulation on the filter.

When “max” mode is set as default you will occasionally hear the vacuum whining noise change briefly. Best I can figure is it's a software glitch where the IQBoost code tries to adjust the suction level; but then resets it to max. I normally hear this shortly after Robovac goes from one flooring type to another. It also occurs shortly after it starts it's routine.

Robovac does not communicate back to the remote. So if for instance, you press edge cleaning and Robovac doesn't get the message, the remote will show it should be performing edge cleaning even though it's not. Similar situation when Robovac is recharging or is returning to recharge; the remote will still show it's in the selected cleaning mode rather than the “charging” icon. You simply have to pay attention that Robovac has recognized your command by a “beep”.

I found using the basketball nozzle with my Ryobi P737 inflator does an excellent job cleaning the filter. It takes only a couple minutes to clean both the filter and the bin (outdoors of course!). The original filter has been cleaned well over 100 times now and other than being a little dingy it's still working great. This should help stretch the recommended replacement interval to more than 2 months compared to the recommended “tapping it” to clean. Do not use the “canned” compressed air as I frequently find it wets surfaces during extended spraying and the Robovac filter is a paper element.

If you have a sofa, chair, etc, with stiff or heavy cloth skirting down to the floor; I suggest safety pinning up at least a foot or two of the skirting on an open side. When or if Robovac switches to using the proximity mode for cleaning AFTER it gets under the furniture, the skirt will appear like a wall and it will keep running around underneath the furniture until it switches to a collision mode where the weight of the skirt generally will not trip the bumper sensors and stop it from escaping.

I'm glad I've used Robovac during the daytime so I could track it down and figure out what trouble it got into during its normal operation or when I expected it to be back at the charging base. The alarm beep sounds can easily be missed when it's far away from you. Plus, when it powers down after getting stuck can make it lot more challenging to find! It's a lot easier to locate when the vacuum sound is still going or even if it's just the quieter wheel motors running it around looking for the charging base.

To wrap up my review. I've found Robovac to be a well built, nicely designed, and quite durable robot vacuum. The $160 price I paid is quite reasonable with excellent cleaning ability (given it has about 1/10 the suction of a typical canister vac). It has good battery run times (my mixed flooring on IQ mode lets Robovac run about 80-85 minutes before recharging), and it is a wonderful time and energy saver. If you've been thinking about a robot vacuum without all the extras (or just don't like vacuuming), the Eufy 11S Max is a great choice.
RAMoffat
5.0 out of 5 stars Over a year in use... study this review for real analysis
Reviewed in the United States on July 31, 2021
Verified Purchase
Summary: I read a LOT of reviews about a LOT of products of a similar nature before I leapt in to buy this, my first robot. Overall, this product was good SOLID value for the money.

I have now owned it for for OVER a year now, used daily and this analysis is based on close observations during that period. NOT one of those folks who buy it an write a review five minutes after they pull something out of the box. Here are the key points you should consider when buying a Robot to sweep your floors.

1. Price - Look...Price was definitely a consideration at buy in. I studied many models before I bought this one. These kinds of robots overall cost money. $$$. Of course, I am old school. These days some folks buy a Cell phone that cost $500 dollars to $1000 and think nothing of it. To me that is WAY too much. Ditto many models of similar robots. At the time I bought it the robot was on sale so I got a price that was $100 cheaper than competitors whose reviews read about the same as this one did. So the buy in pricewise was a good solid deal that was in what I consider the medium to upper low cost affordability range. Perhaps you would think nothing of spending $850 on a robot. Not me. Like goldilocks, this one was just right.
SECRET Costs you may not think about: Some reviews address this, but consider these things as being costs IN ADDITION to buy in:
Filters: This thing has a filter. I recall one review whining that filters cost too much. Let me be clear. If you want a new HEPA filter for it every week or two, they will cost you. Me? The filter does not seem to me to very critical since I do not really plan on the robot cleaning my air. It gets dirty and dusty. As a result, I pull it every other use and wash it out under a faucet in my kitchen (a two minute job), let it dry a bit and then put it right back in the machine (Which is super easy to do...no tools or anything - just pull out - click in.) After reading one alarmist review prior to buying, I bought one spare filter at the same time I bought the robot thinking I might find it was true. So far, after a year or more of use, I STILL have not replaced the filter. Just keep using the original. Think about it.
Brushes - I bought a kit with spare brushes when I bought the robot. Glad I did. Buy at least one set just to you have them around when you need them. The brushes twirl around and shove cat hair into the maw of the thing as it races around. Somewhere. Somehow, as it toodled about around the six month mark, it threw a brush. (They snap on and off easily) Like a horse throwing a shoe, this is to be expected. This thing runs all over on its own so I could not find where it lost it. To this day I STILL have not found the missing brush. No problem. I just grabbed a spare, snapped it on and it kept on going.
Tools - The kit I bought early came with a little cleaning/maintenance tool. See my section on Maintenance below about tools.

2. Utility - Utility to me means ease of use. Based on a year of hard use for my robot you should consider the following lessons learned about utility:
CLEANING FLOORS
a. Does is really sweep ALL the floor? Read a lot of reviews and looked at a variety of designs. Some reviews that I recall said "This thing finds a LOT of dirt. Where does it get it all?" After a year of emptying it (You DO need to empty its evening sweep into your trash, usually every day - VERY easy to do - again click out- click in) I totally agree! This thing finds a TON of dirt and dust that is NOT obvious to the naked eye. Frankly, that is its job and I need to make clear here that it does its job really really well. VERY SATISFIED
b. To be utter clear however... I have a three story house. To define that though that is two stories with WOODEN and some tile Floors and a third floor that is mixed wood, carpet and concrete.
PRO: I cheat. One robot for three floors of my house! Every day or two I pick it up from its charger, move it from floor to floor to let it clean a different floor whenever the mood strikes me. Works great! More, this thing cleans almost all of those floors flawlessly - especially the wood, tile and concrete bits. It sneaks into lots and lots of corners, under furniture and stuff and it never, ever runs off the edge of stairs. Completely satisfied. I admit I may be so satisfied because wood, tile and concrete are 92% of my floors and it is flawless on those types of floors.
CON: This is a real review, not a feel good propaganda babble. If there is a con to this robot it is carpets. Specifically, it WILL work across modern carpet. That is carpet that is tight, laid level with the rest of the floor and has nothing to hang it up on. However, it struggles to go over edges, so if there is an edge to your carpet, a strip that it has to ride up over OR (Like me) you have a carpet or two that are Persian Style rugs with tassels at the end, just be advised that it WILL choke as it tries to cross these barriers. You can still do these surfaces, but you will have to stay nearby and bail it out when/if it hangs up... which feels time wasting. This should not make you hesitate to buy based on this review UNLESS you have a lot of these carpet barrier things about your house, in which case you will be annoyed by this robot. To be fair however, you may be annoyed by ANY robot under those conditions. Just think about it before you buy.
******** Utility NOTE! This is a final note on utility. The REAL Nemesis of any robot is WIRES/Cords. Once you own one, you will figure this out pretty quick. You will need to get your cords under control since the robots will find power cords on computers, lamps etcetera and choke up on them. 80% of the time when it does not return to its charger at after you program it to clean (Smart folks program that between 1AM and 3AM - unless you tell it to go manually for some reason) you will have to track it down to find it hung up on wires. Once again, to be fair, I think this is true of virtually all robots. They are not too bright about wires. The other 20% of hang-ups comes from some oddity in your furniture. I have particular chair in my study whose side supports are JUST a bit too short for the robot to go under, so it drive in there and wedges itself into the spot and cannot get free on its own. Just to you know, this is fair enough, robot makers cannot anticipate every single possible piece of odd furniture. Just figure it out through trial and error, but enjoy all the cleaning it does WITHOUT you paying the slightest attention. A small price to pay.
*********Utility NOTE 2: The control - Comes with a remote. To be frank, I only use two or three features on the control. I tested them all at the beginning, but I've forgotten what the rest do. Most used? Manual use button. Because of how I use it on other floors, the automatic run feature is only good on one floor. Works flawlessly as far as I can see. I tote it to the second floor, put it down, hit the manual timed button and off it goes. I wander back up an hour two later, hit the off button and walk it back to its charger. Second most used? The recharge button - This tells it got back to recharge station manually. If you you do not want it to keep going you can interrupt its cycle and it will go back to its recharging. Usually use this when I am watching a show, it starts on its own and I find the noise distracts me from watching. Third most used feature? The manual steering controls. One review I read said this machine is really stupid. That is half true. It does fine most of the time, but if you want to steer it manually on occasion you can. I have a table I want to make sure it does under in a certain way, so I just point and click it to drive it into the bits when I want them to be cleaned.

3. Maintenance - Look. Old soldiers will tell you. Preventative maintenance will allow you to keep using your equipment day in and day out. This robot IS reliable IF you know you will need to maintain it! If you are lazy you will hate doing maintenance. I just make it part of day's routine and do not resent it. Thus I am very satisfied. My routine is to pick it up about 5 PM, sit and work on it for three to five minutes WHILE I watch TV. WHAT? You cry! Why so much work! The work is there because the robot does its job. All you are doing is making sure it keeps doing the job without hassle. Once again, whatever nonsense if advertised, I imagine ALL robots require this kind of looking after. PLAN on it. This one I suspect is no better or worse than any other. Do not go into it blind though.
Here is what you need to know:
a. You will need a little tool to do maintenance. If you buy the little kit with filters, brushes and a tool in it, know this. The tool is a hokey little plastic thing that CAN work... but takes a bit more time to use. Specifically it has a comb to clear tangle in your brushes. This works well. It has a little brush to brush dust off filters, off the inside of the dust/dirt collection box, etc. This works adequately. It ALSO has a little razor blade letter opener thing on one side intended to clear hair from rotors (Two types) This is a weak tool that works, but is time consuming and tedious to use. You are better off getting a little tool with steel blade or hook on it. Something you can use to really dig hair out of spots where it winds itself around a brush or rotor. Dig through your kitchen drawers, tool boxes or the $2.00 bins a the hardware store until you find something that works better for you.
Maintenance: Enemy number one if long hairs. I have two women in the house. I am sure they do not mean to shed, but shed it they do somehow. This is what happens. As the little brushes turn they pick up hair and push some of it into the bin...BUT they also wind around and around the spinning brushes. Every other cleaning I find a wad of it around both brushes. There is also a rotor on the bottom the turns and does the sweeping up.. It ALSO picks up long hairs. Some will wind around the rotor proper and must be cut off or pulled off. This is the easy part. The hard part is that some will wind around at the ends where the bristles stop. This is where the recommended tool I mentioned will pay for itself as the hair tends to knot up tight in wind after wind. You will have to dig it out and cut it loose. You must also empty the bin at the same time. I also wash the bin out now and then along with the filter. Once a month or month and half the front wheel may also need to be tugged out (It pulls out and pushed back in easily) It ALSO gets hair down in there around its axle, though not nearly as fast as the rotors and brushes do. That is it. I will only close by saying I have NOT owned every robot in the world, but I imagine these periodic maintenance requirements will be very similar for ANY robot... NOT just this one, so if my maintenance picture here appear to be too gloomy, don't let it be.

OVERALL: I am totally sold on having a slave machine keep my floors swept. Rather it than me! Call me lazy bones. A little maintenance now and then is well worth this machine. Go ahead and buy one. Jump in the water's fine.