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๐งผ Clean smarter, not harder โ the future of vacuuming is here!
The Shark Clean & Empty Cordless Vacuum BU3521UKTSB revolutionizes home cleaning with its self-emptying base that traps 99.9% of dust and allergens, a lightweight design 30% lighter than previous models, and up to 40 minutes of cordless runtime. Equipped with anti-hair wrap technology and versatile tools, itโs engineered for effortless, hygienic cleaning on all floor types, making it the ultimate choice for busy professionals and pet owners alike.










| ASIN | B0F5X43Z7P |
| Battery Life | 40 minutes |
| Best Sellers Rank | 4,902 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 22 in Stick Vacuums & Electric Brooms |
| Brand | Shark |
| Brand Name | Shark |
| Capacity | 1.3 litres |
| Colour | Mohogany |
| Country Of Origin | China |
| Customer Reviews | 4.4 out of 5 stars 614 Reviews |
| Filter Type | HEPA Filter |
| Filter type | HEPA Filter |
| Form Factor | Stick |
| Included Components | Anti-Allergen Brush, Auto-Empty Charging Dock, Crevice Tool, Motorised Hand Tool, Multi-Surface Tool |
| Indoor Outdoor Usage | Indoor |
| Is Product Cordless | Yes |
| Item Dimensions L x W x H | 35.3L x 26.4W x 109.2H centimetres |
| Item Type Name | Cordless Stick Vacuum Cleaner |
| Item Weight | 2.7 Kilograms |
| Manufacture Year | 2025 |
| Manufacturer | Shark |
| Model Name | Shark Clean & Empty |
| Model Number | BU3521UKTSB |
| Number of Items | 1 |
| Number of Power Levels | 2 |
| Other Special Features of the Product | Auto-Empty Base, Anti-Allergen Complete Seal, Anti Hair Wrap, Auto-Adjusts to Floor Type, Charging Dock, Up to 40 Mins run-time |
| Portable | Yes |
| Power Source | Battery Powered |
| Power source | Battery Powered |
| Recommended Uses For Product | Floor, Pet Hair |
| Runtime | 40 minutes |
| Special feature | Auto-Empty Base, Anti-Allergen Complete Seal, Anti Hair Wrap, Auto-Adjusts to Floor Type, Charging Dock, Up to 40 Mins run-time Special feature Auto-Empty Base, Anti-Allergen Complete Seal, Anti Hair Wrap, Auto-Adjusts to Floor Type, Charging Dock, Up to 40 Mins run-time See more |
| Style Name | Amazon Exclusive Bundle |
| Surface Recommendation | Carpets, Hard Floors, Upholstory, in Car, All Floors |
| Surface recommendation | Carpets, Hard Floors, Upholstory, in Car, All Floors |
| UPC | 622356329569 |
| Voltage | 240 Volts |
| Wattage | 240 watts |
F**S
Iโm glad I brought it
Iโve been using Shark vacuum cleaners for years and have stuck with the brand ever since making the switch. My previous Shark lasted for years, so I had high expectations for this model, and it hasnโt disappointed. This vacuum is incredibly lightweight, making it easy to carry and manoeuvre around the house, yet itโs still impressively powerful and picks up dirt with ease. The self-emptying feature is a little loud when emptying, but the convenience more than makes up for it. Overall, itโs a fantastic vacuum cleaner that combines power and ease of use. Excellent value for money and another great product from Shark.
S**.
Love this! Best hoover I have had.
Extremely easy to use and has made vacuuming a pleasure! My teenage daughter actually offers to use it ๐คฃ. Love the fact it empties into the box instead of having to empty into a bin each time. Powerful suction and it picks cat hair up well. It rolls well into corners. Itโs light to use the easy to take apart and use attachments. This was expensive but compared to others of similar price, I rate it higher by far. It has limited time without recharging. I do 3 rooms and the hall and it goes down to 3 bars (half ish).
M**.
Never been so happy with a Vacuum Cleaner
This makes cleaning the house so much easier and regular. Light and so easy to adjust from hard floors to carpet. Picked up things my old vacuum left behind. Anti tangle technology doesn't get clogged up with pet hairs. Good for tall people feel like I don't have to bend while using it. Nice that extra battery can be purchased and charged separately so you can increase the 30-40minute run time. The devices fills up quite easily but then attaching it to the stand empties it quickly and means emptying the main bin compartment more regularly stops it getting blocked up or jammed.
J**N
Light to lift, easy to charge and empty
Perfect, easy to lift. It charges in my cupboard and is always ready to use. Light to use, good for daily/weekly run around. Turns effortlessly to get in corners and awkward spots. Lifts fur from upholstery reasonably well with the attachments. Drawbacks: Suction a little lower than my old vacuum and sometimes it does not auto-empty and needs to be opened up by hand. The base unit takes a lot of dust before it needs emptying. The base unit is pretty straightforward to remove and empty. The vacuum comes with one filter in it, I would advise having a spare. They can be washed, but a spare is needed while the other one is drying.
S**Y
Great Cordless Vacuum
Very easy to put together and the suction is a lot greater than my previous cordless vacuum. The fact that it keeps itself fully charged and empties itself is a bonus. The cleaner and docking base doesn't take up much room which is a bonus.
H**K
Great vacuum to clean my 1 bed flat
I have used it for a month since the purchase. So far, can't complain! The suction is good and the battery life is sufficient to clean my flat (about 40sqm). The auto empty system as well as the standing dock has been super useful, keeping my vacuum to constantly be charged. Other functionality wise, it is a little basic, but still the whole package I think - auto/eco/power mode, light in front of the main head, battery level is shown as 4 blocks. The downside is, it is a little loud I feel like compared to the other vacuums I have used. The auto empty functionality can be a little loud as well, but then again it's only for a couple seconds and you can turn it off as well. Overall, for the price point, this is a great cleaner compared to the other knock off dyson/shark brands in amazon.
L**T
Not worth the full price
Its good, battery could be better. Bought as apparently great for pet fur which is not the case. I have to mamually unblock daily
R**E
Best vacuum cleaner
I am so happy with this product, the vacuum is of great quality, the battery lasts long enough to clean a 2 bedroom property and the self empty feature is superb (did not realise how useful itโd be until I had it!). It looks stylish and non-offensive to the eye. I love the light to help you see as you clean and the fact is adjusts the modes automatically as it senses different floor surfaces. I highly recommend. I am disabled and find this hoover much lighter than most others on the market which is a major plus.
Trustpilot
1 month ago
5 days ago