DREAME L40 Ultra Robot Vacuum and Mop
Smart Cleaning with Maximum Power and Precision
- Liftable & Removable Mop: Automatically lifts or detaches for carpet protection. Ideal for mixed-floor homes.
- SideReach Technology: Extends brushes for edge and corner coverage—perfect around furniture legs and walls.
- 11,000Pa Suction Power: Deep clean across all floor types with adjustable power levels via the Dreamehome App.
- 149°F Mop & Washboard Self-Cleaning: Eliminates odors and bacteria for hygienic cleaning performance.
- Auto Empty & Refill Station: Hands-free operation with automatic water refill and dustbin emptying.
- 3D Structured Light & LED Navigation: Smart mapping, obstacle avoidance, and efficient route planning.
- Pet-Friendly Mode: Define safe zones, reduce noise, and avoid pet areas—perfect for homes with furry friends.
- Long Runtime & Fast Charging: 5200mAh battery lasts up to 194 minutes and covers up to 181m² per cycle.
- Voice Assistant Integration: Compatible with Alexa and Google Assistant for easy voice control.
Technical Specifications
| Brand | DREAME |
| Model | L40 Ultra |
| Color | White |
| Suction Power | 11,000Pa |
| Battery Capacity | 5200mAh |
| Run Time | Up to 194 minutes |
| Water Temperature | Up to 149°F / 65°C |
| Dimensions | 16″L x 16″W x 24″H |
| Special Features | Self-Emptying, Self-Refilling, Hot Mop Cleaning, Voice Control, Liftable Mop, 3D Mapping, App Control |
The mop feature is a step higher than a gimmick. Meaning I don't fully believe it's a mopping job, but again it's generally cleaner than it would otherwise be. I will not expect it to clean up my spills and to me it's ridiculous to think that'd be appropriate knowing how it's mopping system works. I knew this before buying. I will, however, clean up my own spill and have this guy come do final touch ups after I'm done.
What sets this bot apart from other robots in it's price range is the ability to leave it's mop pads at the dock station. As I have shaggy carpet in some areas I love this feature.
I am evaluating this bot from a sale price perspective and in general don't think any bot even ones that deep clean or jump over clearances is worth the full price (at this time around a grand and over a grand for those features). Occasionally, but mostly early on, it had trouble docking itself but has been doing well since. Overall I love this thing. If you get it on sale you probably won't regret it. This isn't one of those robots from the movie Fifth Element so don't expect it to be.
Android app has a low rating on the play store and I'm guessing that's a result of earlier implementations. I found the app great and very specific. Take your time and learn the app. Watch a video on it. I learned a lot from justadad. He's got a whole bunch of robovacs running in his basement to see which will rise to the top. This is my first robo vacuum and see it being pretty durable. Also.. I never really ran it with the stock roller. I had ordered the tricut brush at the same time and installed that immediately.
I’m amazed at how quickly robot vacuum cleaner technology has advanced since then.
The L40 can even add solution, and it automatically washes the mop with hot water, cleaning it very thoroughly.
Its operating noise is noticeably quieter, which I really appreciate. You can also set it to return to the dock to wash the mop after cleaning each individual area before moving on to the next—this is a feature I absolutely love.
It’s also very pet-friendly, with the ability to take photos and record conversations. The built-in interface is extremely user-friendly.
These features are on par with those of flagship models, and I got it on sale for $499 plus tax—I think it’s an excellent value.
Overall, I’d give it full marks—highly recommended! ❤️💯
Water tank has capacity to last for days or even weeks and self-cleaning features are excellent, cleaning mops with hot water and drying them really well.
It will fit well in many interiors but with maneuverability it has, it can also be tucked in pretty tight corner – see the video.
A solid buy!
As soon as it arrived, I unpacked and set it up right away. There wasn’t much assembly required—just attaching the magnetic mop, placing the water tank, and the dust bag was already installed (there’s an extra one included for later replacement). It also came with a bottle of concentrated cleaning solution, which you pour in, and it automatically mixes the right amount to clean the mop.
After about an hour of charging, the battery was basically full. The first cleaning run does a mapping of the space, and then you can use your phone to set specific areas for deeper cleaning. I love this feature! In the video, I set it to clean up cat vomit, and it left the floor spotless!
The mapping visuals may not be as 3D and detailed as Ecovacs, but honestly, it’s more than enough. That night, I was so happy not to feel cat litter under my feet—I kept sliding my feet around on the clean floor. For the price, I think it’s a fantastic value!
It’s all about robot making life easier, it first freed me from weekly sweeping and mopping, and I’m now tired of moving the station to different floors then bought another one. Now I’m tired of bending to click start when I need. The voice activation satisfies you more than you can imagine.
This robot vacuum-mop is a major leap in smart cleaning. It handles everything—vacuuming, emptying, mopping—without any user intervention.
Highlights:
• Starts with carpets, then vacuums hard floors, then mops.
• No need to attach or remove mop pads—it does that itself.
• You can choose to raise mop pads over carpet or have it auto-drop them off and reattach after.
• Mopping is excellent: it pushes one mop pad out and wiggles to clean edges.
• It even checks the dirty water and re-mops if needed (only in Genius Clean mode).
• Side brush no longer spins on carpet by default—you’ll need a workaround to enable it. Supposedly to prevent motor wear, but I disagree with the decision.
Bonus features:
• Heated water and built-in cleaning solution dispenser.
• Dual water tanks (clean + dirty).
• Self-emptying dustbin.
• Auto mop pad cleaning mid-job.
• Extendable corner brush + swing-out mop pads.
• Compact, sleek base with optional water hookup.
• Very quiet.
• Smart threshold crossing with pad-lifting and angled approach.
This isn’t just a robot vac—it’s a fully integrated floor care system.
Now that I have a working bot, I’m quite happy with it. I’ve got it scheduled to clean 500 feet three times a week and so far it’s been doing it without issue.
Pros:
1. The fur pickup on medium pile carpet is pretty good with the optional tri-cut brush and “intensive cleaning with cross-walk” option enabled. The L40 probably gets about 85 to 90% of the fur with this setting. It’s not as good as my Dyson V8, but is noticeably better than my previous Roborock S7 MaxV Ultra.
2. It’s relatively quiet. My old Roborock is loud and even louder when it’s emptying or cleaning in the dock. The new L40 is significantly quieter, so much so that I schedule it to run at 4am while I’m asleep. Cleaning in the dark is no problem for it.
3. The app is easy to use and the scheduled cleanings have been reliable
Cons:
1. It still requires “programming.” Robot vacuums aren’t “plug and play” yet. You have to spend time getting to know the L40’s quirks and limitations and finding work around, like—
2. The L40 hates wire frame chairs. See pic, it tries to climb over them, gets stuck and/or loses its mop pads and freaks out. To work around, I zoned a tiny area around dining chairs so the robot avoids them on 2/3 days. On the third day, I put the chairs on my dining table.
3. The L40 AI obstacle avoidance falsely recognizes the dark knots in my pine floors as dog poop and avoids them. To work around this, I turned off the AI-obstacle avoidance. I keep my floors pretty clutter free so this hasn’t been a problem for me.
Overall I’m very happy that Dreame reached out and got me a working bot so quickly. I’m quite pleased with its abilities.
—Original Review of Dud L40-–
I’m returning the L40 after spending about two weeks trying to get it clean 1500 square feet on a daily schedule; it only completed a scheduled cleaning once without issue. Problems have included:
1. Mop pads falling off (so I switched from Clean Genius to custom without mop pads)
2. Crud getting on mop pad attachment preventing it from seating correctly like small rocks or staples
3. Trying to get from point A to point B through a closed door (instead of the open hallway), spinning around the closed door until dying from lack of battery (drawing virtual wall probably helped)
4. Randomly not finishing scheduled cycle in the middle of the night (maybe it was an automated firmware update? I deactivated that feature)
5. Now it's just dead. It went offline, all lights are flashing, and it won’t respond to anything. Not even the reset button works when I hold it down with a paper clip.
So maybe I have a dud? I only tried contacting Dreame support once via e-mail and never heard back but would rather return than go through RMA.
The L40 certainly has potential, so maybe it’s good if it actually works. Be sure to save your packaging so you can more easily send it back if yours doesn’t perform as expected.
I had an old normal robot vacuum that would always get stuck on the rug, the wires, and the many thousands of small pockets of space because of the furniture. I got tired of having to untuck it every 5 minutes and also tired of emptying the bin and releasing half of the dust collected back into the apartment. Mopping? Hehehehe, only once every 6 months; I just don't have the time.
This time I bought it, installed everything in 10 minutes and had it start the mapping which took FIVE literal minutes and I had a PERFECT.map of my house. I tweaked all the settings, did a complete deep clean, and it NEVER stuck, cleaned stains on the floors that I've had for months, redid more dirty areas, emptied the bag, cleaned the mops, EVERYTHING; it was a freaking dream! And everything while I was in a lunch meeting outside my house!!!! Just look at the kitchen floor before I leave and when I come back!!!! I'm in absolute love, even if I have to buy a new one every year!!!!
I tried the Dreame X30 and while it was a great vacuum it did not seem to have the same raw power as the Roborock Q Master. The Roborock Q Master sucks at object avoidance. No matter what I did or what settings I selected it would not avoid anything. I know no robot vacuum is perfect but the Q Master is listed as being smart and has a camera in theory should help it avoid cords and socks and dogs, but it does not.
I picked up the L40 Dreame on sale and have been in love since. It has the raw power like the Q Master but is way smarter. I was so tired of looking around before I ran my vacuum I would clean to clean. The L40 is so much better not only does it run like a dream but I have not had it once get stuck or get something stuck in its roller. It vacuumed under my couch and then in the app at got a notification that I might have a missing item under there, it even took a picture of it so I could decide if it was worth going after. And for the 1st time besides my Romba S9, the vacuum will come back when it is full and empty itself and keep going. I have a Beagle and she shads like crazy if I skip a day of vacuuming other vacuums would get full but keep vacuuming even though they were no longer picking anything up.
The mopping is also top notch and not only does it push one mop pad out to the side but it will also wiggle to get even closer. After mopping it will clean and let you know if the water was dirty enough to mop again and then go do it. The only problem is it only does this with genius clean not customized. Also, the side brush no longer spins on the carpet by default. You have to do some trickery to get it to spin on the carpet. Which is stupid to me, I looked around and they saw this is because it's not really needed on carpet and keeps the motor from burning out. I do not agree.
I would give it 5 stars but Amazon delivered it to me damaged, and will not replace the item they just want me to return it for a refund. The problem I got it on sale close to Prime Day and it is no longer on sale. So, if I returned it, I would have to pay more to buy it again. If it was a small amount like 25 bucks, I could see that, but it’s like 350. The policy does say I can get an item replaced within 30 days but they are not budging. Everything works besides the cleaning solution injection.
So, if you are thinking about buying it, I would say pull the trigger. If you can buy it from someone other Than Amazon that’s even better. Since they will punish you if you happen to find a deal on their site.
Update****
While I could not get Amazon to do the right thing and replace the item without me returning it. Dreame support has stepped in and has been nothing but pleasant to work with. I wanna be clear the 5 stars are for Dreame and the L40. Their customer support and their vacuum have been a dream to work with it. I can not recommend them enough. If you are on the fence about buying a robot vacuum from Dreame, I would say pull the trigger. The vacuum is top-of-the-line filled with the best tech. Customer support has been fast to reply and very easy to work with. Until the X50 comes out I am staying with the L40.
*********Update*********
Still one of the best robot vacumes you can buy hands down and I would buy it again if the X50 was not out :) (I would love to review the X50 Dreame if you are listing) and it seems to be improving itself like it is learning, hear me out. I have two small dogs one that is afraid of its own shadow and another one who could care less about the vacuum. When I 1st got it I was cautious around both both dogs taking what seems like 1000 of pictures of them, even if they were not in the frame all the way. It would slow down if they walked in front of it, it would give them both a wide birth as if it was unsure as to how the dogs would react. Fast forward to today and I no longer get out of 100 pics of them in the app. The vacuum knows that it can get right up next to my dog who does not care and clean around her. But it knows to slow down when the other dog is laying in the middle of the floor because it knows he will get scared and move at the last minute. I swear iuts almost like it is learning and thinking.
The package left at my door was concerningly large but once you install the dock again a wall, it really doesn’t take up much space at all. The setup is very easy, you just plug it into a wall, install one to the two included vacuum bags (which have a cool plastic slider to close them up when it’s time to replace them) and fill up the mop cleaning solution holder with the included sample size solution (just enough to fill up the solution holder).
After sliding in a bag and filling up the solution, all you have to do is load up the clean water reservoir with regular (not hot) water. The reservoirs are very easy to fill and hold plenty of water to last a few days. No need to hook this dock up to a water line.
Initially I downloaded the required app and my mind was blown with how many options and features there are for this sturdily built little UFO. The first thing you want to do is clean your house, remove objects from floors and open all doors. Once you do this, you want to send it out in a quick scan of your home, which actually took about 40minutes to map out my 2000 sq foot house. During this mode, it is simply scanning your house. The map it created was very cool, and there’s tons of options to divide up rooms, label furniture, place off limit zones, list carpet (which it was able to detect itself), etc.
It took a couple days of playing around with all the features (suction power, mop wetness, wether to have it automatically leave the mop heads at the dock then return after vacuuming to reattach it automatically, or do a vacuum and mop simultaneously….just to name a few). There’s literally probably a hundred options on how to run this vacuum, it’s absolutely crazy in a good way. After two weeks of ownership I’m still astonished at all the features I’m discovering.
As far as cleaning, we have been running it twice daily for two weeks. It’s not as good as a Kirby/ swifer combo, but actually comes quite close. Honestly I haven’t used the Kirby at all and it’s gonna see storage soon. The ease of use and great battery life really allow you to run this robot all the time. It’s just so easy to keep your house clean that it beats manually using larger/better machine.
As far as cloning objects, I can confirm that it doesn’t climb over 0.8 inch objects (or more from my tests) with ease. It’s really amazing at how easy this thing moves around. Watching the mop and sweeper comes out to get under fridges and cabinets is very cool as well. The video is definitely true to life, but as expected, there will be some crumbs pushed further away and not necessary swept into the vacuum section.
Overall, it’s a great purchase simply for keeping your house clean and making life easier. Your still gonna want to keep a big vacuum for major spills and accidents, but for day to day use, this little thing will keep your house much cleaner than your used to.
The robot itself is about the size of other robot vacuums, yet is much quieter. It looks sleek, and has a little headlight it can turn on in low lighting.
The mapping is superior to others we have used, as it uses LIDAR and cameras to map the floor plan. The only thing it got wrong is that it mapped part of outside that it cannot get to through the patio door. I do not know if it will figure out it can't go there and will make adjustments over time. As it cleans, you can look at the map to see how much has been done and how much there is to go.
The base has two bins - one for clean water, and one for dirty water. The robot fills itself with water as needed, and comes back to the base to dump dirty water when a job is complete. It manages itself, so if it needs more water or it needs charging, it will go back to the base, and continue the job when done with its task. It cleans and dries the mop pads after every job. The base also includes a bag to collect vacuumed dust and debris.
I was a little disappointed not to have that "clean" scent after mopping, but after reading that essential oils and other cleaners not meant for robot vacuums can damage them, I have decided just to use the cleaner that is made for it, and use other fragrance products to help my house smell the way I like it.
It automatically detects rugs, and you can set it to ignore rugs or to vacuum them. You can even set it to leave the mop pads behind on the base to vacuum the rugs, so that there is no risk of the rugs getting wet.
Programs can be scheduled to do certain rooms or zones at specific times, and there is the option to deep clean as well.
You can set "no go" zones if there are areas with cords or breakable items, and you can also program in curtains, so it knows to avoid those areas.
This robot is much better than others we have used as far as not hitting furniture or walls. As it approaches furniture or an obstacle, it slows down and gently rolls up to it, getting as close as possible for cleaning without bumping it. There is also a setting that tells it to clean the bottom of the furniture legs!
If you have dogs that like to lie around on the floor, there is a pet setting that detects and avoids them. We turned it off as the cats tend to just get out of the way, though they are fascinated by it.
Unlike our previous robot vacuum, this one hasn't gotten itself stuck anywhere.
One thing that we found is that we had a few dried spills on our floor, and they needed a little soaking to help the robot get them up. We didn't use the Clean Genius setting though, so it may have detected and kept working at it. But now that our floors are truly clean, this little guy is going to do a great job keeping them that way!
This little robotic helper is quite the financial investment, but it can completely take the task of vacuuming and mopping off your to-do list - forever. That's worth it to us. It could be worth it for you too.
This has the auto self cleaning and emptying. I'm funny about mopping my floors so I only did a small section to test it out and it did fine. You can make sure it leaves the mop pads at the docking station. I just wanted the sweeper to program when I needed it done. It does really good. It has voice control and the app is easy to navigate. I'll need it longer to actually see if the price point is worth it because it's pretty steep.