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The Shark Clean & Empty BU3521ME is a lightweight, cordless stick vacuum featuring a revolutionary auto-empty system and HEPA filtration that traps 99.97% of allergens. With up to 40 minutes of runtime, smart floor detection, and a removable handheld vacuum, it delivers powerful, versatile cleaning for pet hair, carpets, and hard floors. Designed for busy professionals, it combines convenience, health-conscious filtration, and ergonomic design backed by a 5-year warranty.










| ASIN | B0D15YWYMD |
| Best Sellers Rank | #756 in Kitchen ( See Top 100 in Kitchen ) #12 in Stick Vacuums & Electric Brooms |
| Brand | Shark |
| Capacity | 1.3 Liters |
| Color | White |
| Customer Reviews | 4.2 4.2 out of 5 stars (8,794) |
| Date First Available | 21 May 2024 |
| Item Weight | 5.1 Kilograms |
| Material | Plastic |
| Model Number | BU3521 |
| Power / Wattage | 180 watts |
| Product Dimensions | 37.31 x 26.49 x 110.49 cm; 5.1 kg |
| Runtime | 40 minutes |
| Special Features | Cordless, HEPA, High Precision Sensors, Lightweight, Spotless Cleaning |
| Voltage | 120 Volts |
R**E
One of the Best Wireless Vacuums You Can Buy
If you’re considering a wireless vacuum cleaner, this is hands down one of the best investments you can make. It delivers powerful performance, especially on carpets, picking up dirt impressively well. The battery life is long enough for practical, everyday cleaning, and the whole unit is lightweight and easy to maneuver. What really stands out is the thoughtful design and ergonomic build — everything feels intuitive and well-balanced. Based on my experience so far, it’s a purchase I feel confident about and would recommend to others.
K**D
10/10
Absolutely amazing vacuum, light weight in comparison to traditional vacuum. Slow to charge, but charge lasts quite awhile. Daily use in small one bedroom apartment, charge lasts about two weeks. Great attachments, easy to disassemble for cleaning purposes, great suction.
T**H
good quality
The Vacuum cleaners did good job on daily cleaning work. For my flat which is only 369 sqft, it can completely the work in one-time full charge. However, if I want to do extra cleaning, then I need to charge it again. All about this vacuum is good, except the battery is kind insufficient. But if you live alone or having a small apartment then this is the most affordable and valuable vacuum cleaner I recommend.
A**Y
Great performance!
Love it! I bought second already for my second apartment. Works great! It's my 3rd Shark Vacuum cleaner, and eac new vacuum cleaner is better, better and better. Light, great suction power, removes my animals fur easily. If you find it on sale, buy it! You won't regret
J**A
Don’t waste your time and money
As a user of proper vacuum cleaners I was skeptical about cordless vacuum cleaners. Unfortunately my experience proved true. As soon as I got it I tried to vacuum a strand of hair and wouldn’t come. I felt like I am holding a fan not a vacuum. I tried vacuuming the tiles, I had to go over the piece of crumble four times to pick it up. Then I tried to vacuum my carpet, the vacuum showed red light and shut off and the battery which was full became zero. This is a toy not a vacuum.
A**A
Great cordless vacuum!
I am very happy with my recent purchase! It's incredibly light and easy to use. I particularly appreciate how it automatically adjusts its power based on whether I'm cleaning a floor or carpet. What I love most is the stand station. It's so convenient not having to fix it to the wall, and the auto-cleaning feature is a fantastic bonus. Beyond these features, the 5-year warranty speaks volumes about the quality of this product. I absolutely recommend it!
A**S
Should have purchased this long ago.
Should have purchased this long ago. Really happy with the options. The self cleaning or dust extraction is really a game changer.Wow.
S**.
Poor quality
Heavy to work with. Filters need a lot of cleaning. Broke after 12.5months
D**E
What I received was an opened box with a used item inside.
S**N
Ich habe lange gesucht,gelesen und informiert. Da mein normaler Staubsauger kaputt gegangen ist und mich das Kabel immer genervt hat,war ich am überlegen ob ein Akku Staubsauger für mich im frage kommt. Wichtig war für mich: 1. Preis 2. Akku Leistung 3. Saugleistung 4. Lautstärke 5. Flexibilität Dieser Akku Sauger hat alles! Aufladung 100% geht sehr schnell. Ich habe 80qm Wohnung, 3 Zimmer. Ich komme mit einer Akku Ladung komplett aus. Das war ausschlaggebend für mich .Ich habe Laminat Boden und in jedem Raum Teppichbrücken. Bei Teppich stelle ich die Saugleistung auf 3,da zieht er natürlich sehr den Akku. Aber, wenn ich die Wohnung fertig gesaugt habe und ich sauge nicht nur Oberflächchig, sondern nehme Teppich hoch oder stelle Stühle zur seite usw.,habe ich zwischen 10 und 30% Akku noch über. Manchmal lasse ich ihn an und stehen wenn ich was hochhebe, dadurch den unterschiedlichen Akku Stand. Auch was der aus dem Teppich zieht ist enorm (Foto von 1x saugen). Bei mir wird in der Wohnung nicht mit Schuhe gelaufen und dennoch zieht er den Staub/Dreck usw.raus. Auch das er die Düse hat um in Ecken zu saugen ist top. Die Reinigung ist einfach, schnell ob Behälter ausleeren oder unten die Rolle mal reinigen. Die Lautstärke ist normal, nicht zu laut, sondern Standard. Ich bereue nicht im Ansatz diesen Akkustaubsauger gekauft zu haben. Ich kenne den Dyson und andere Marken die extrem hochpreisig sind und können nicht im geringsten mithalten. 100% Kaufempfehlung!!!
M**E
I bought this to keep the area around my rat cages clean, because love to kick their bedding (hemp and wood shavings) everywhere, requiring vacuuming at least once a day, and my previous vacuum wasn't keeping up with what it needed to suck. No such trouble with this Shark though! It sucks up hemp chips and wood shavings like a champ! The auto-sense works perfectly and adjusts the power necessary in that area with no issues. It grabs up a lot of pet hair too, just as described. I've attached a video of some excess debris in the middle of a cage-clean today to show how well it goes! It also picks up and filters an insane amount of dust! Looking at my previous vacs, you wouldn't know how much dust was lingering about in carpets, on upholstery, curtains, etc. This Shark gives my air purifier a run for its money as far as dander and dust-filtering goes. The little air pod it came with leaves the air post-vacuum with a nice, fresh sent as well. The folding part of the tube makes for both easy storage, and a cinch for getting under anything that has a 90° angle, which is perfect for someone who has a back condition like me - no more bending and hunching and getting down on the floor! The main head also has a very versatile axis that makes it easy to manoeuvre and get into places that used to be fiddly or troublesome. I have extremely long hair that passes my bum and I swear I shed more than my long-haired, double-coated Pomeranian cross, but I have had zero issues with tangling in the vacuum head, which has been a blessing compared to my previous vacs, which have needed hair build-up to be chopped off the roll every few weeks. Quite literally, the only con I can think of is the tank size. However, that's no problem to me as my house is small and I have multiple bins about, so I don't mind emptying it as I go. The one-button empty mechanism is a blessing and I'm glad I no longer have to fiddle with the tank. All in all: amazing vacuum! Does everything it claims and exceeded my expectations. This is my first Shark and given many Dyson quality problems in the past, I don't think I'll be going back. Good job, you've converted me.
M**Y
Very happy with my purchase. I would put this on par with a dyson vacuum, but alot cheaper with same good quality
T**Y
This vacuum works really well and motivates me to clean my hardwood floors more often. I’ll start by saying this vacuum was such a welcome surprise to my previous one. I bought this to replace an all in one mop vacuum combo from another brand that really delivered poor performance so this one totally outshined the competition. 1) it’s really powerful. I can vacuum multiple times in the same day and it will still collect stuff and it’s chamber that will impress you to see how clean it’s keeping your floors. 2) great battery life. I absolutely love that. I can just keep it on. It’s charging stand, which means that I can pick it up anytime quickly and easily and I know it’s going to be charged and ready to go. When I’m done, I just put it back on its charger. 3) the self cleaning function!! I wasn’t looking for a vacuum with the self cleaning function so that was just an added bonus. I really didn’t think I would care about it, but it is SO NICE TO HAVE. Having a vacuum with a self cleaning function that empties the dust bin for you means that anytime you want to vacuum you simply pick it up off the charger and when you’re done? You simply put it back on the charger, that’s it! It makes it so quick and easy to vacuum (and bonus it’s pretty fun to watch) which means I vacuum more frequently and actually look forward to doing it! 4) the roller brush doesn’t trap hair, thank GOD. I truly despise dealing with hair that isn’t on my head it just grosses me out. I also have 3 pets so not having to deal with cutting hair out of a brush after vacuuming is a literal godsend. 5) pivots from hardwood floors to rug easily. It has an auto detect feature that will automatically increase the suction power when on a rug, which is really nice. 6) the buttons for the attachments feel really nice to click on and off. You know when you have a cheaper product and you feel like you’re almost going to break it to click something or push a button? This is easy to put on and take off attachments and feels like it’s nicely made. And it was a big plus for me that it has a handheld feature that can be removed for vacuuming things like the couch or car. 7) it has three suction power modes; Eco regular and a turbo mode, which gives you more control on battery life if you need it to last a little bit longer but don’t need quite as much suction power. My space is only about 1200 ft.² so I’ve had no issue with battery life. Some constructive feedback I would like to include: 1) it would be nice if it could stand up on its own 2) it can’t lay totally flat, though it can go pretty low and get a little ways underneath the bed 3) Lastly, Shark, can we talk about the aesthetic of this thing? I’m not going say that us women are the only ones vacuuming out here but a lot of women are going to be buying this product and we do not want a vacuum that looks like a drill handle 😂 I was honestly very put off by the way this looks when I first saw it, but the functionality of it made it worth it. I would LOVE to see a nicer looking handle for the future.
Trustpilot
2 months ago
1 month ago