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Shark Clean & Empty Cordless Stick Vacuum & Auto-Empty System with PowerFins Brushroll BU3521: Bagless, 40 Min Run Time

Shark Clean & Empty Cordless Stick Vacuum & Auto-Empty System with PowerFins Brushroll BU3521: Bagless, 40 Min Run Time - 2 of 4Shark Clean & Empty Cordless Stick Vacuum & Auto-Empty System with PowerFins Brushroll BU3521: Bagless, 40 Min Run Time - 3 of 4Shark Clean & Empty Cordless Stick Vacuum & Auto-Empty System with PowerFins Brushroll BU3521: Bagless, 40 Min Run Time - 4 of 4
Shark Clean & Empty Cordless Stick Vacuum & Auto-Empty System with PowerFins Brushroll BU3521: Bagless, 40 Min Run Time - 1 of 4
$399.99 when purchased online
Target Online store #3991

About this item

Highlights

  • AUTOMATICALLY CHARGES & EMPTIES AFTER EVERY CLEAN: Return the vac to its charging dock, where it automatically empties into the base. After every clean: no more dirt on your hands, no more dust clouds in your home, no more cleaning after you clean.
  • LIGHTWEIGHT MANEUVERABILITY: The redesigned cordless vacuum is 30% lighter vs. Shark® Vertex® Pro.
  • REMOVABLE HANDVAC: Transforms into handheld vacuum for lightweight above floor cleaning.
  • UP TO 40 MINUTES OF RUNTIME*: Deep clean your whole home with up to 40 minutes* of runtime. (*In ECO mode, measured at the hand vacuum.)
  • UP TO 500X LESS DUST EXPOSURE** VS. TRADITIONAL EMPTYING: Fine dust and debris get sealed away after every clean, keeping them out of the air you breathe-- no more dust clouds. (*Based on third party-plume testing while emptying vs. Shark® Navigator® upright manual empty US/CAN NV130.)
  • HEPA FILTRATION AND ANTI-ALLERGEN COMPLETE SEAL: Captures and traps over 99.97%* of dust and allergens. (*Based on ASTMF1977, down to .3 microns. Allergens refers to non-living matter.)
  • AUTO-ADJUSTS TO FLOOR TYPES: Auto-adjusting & Multi- surface brushroll, optimizes brushroll speed for deep carpet cleaning and directly engages hard floors.
  • QUIET MODE: Provides the option to dock & charge silently, and leave the emptying for later.
  • LED HEADLIGHTS: Powerful LED lights on the nozzle reveal hidden debris around your home.

Description

Meet the new Shark Clean & Empty Cordless Stick Vacuum Cleaner & Auto-Empty System. Clean & Empty features a redesigned 1.3L auto-empty base and a lightweight design for versatile cleaning. With the auto-empty system, cleaning convenience is optimized; Always Charged, Always Empty & ready for the next clean. Inside the base, fine dust and debris is captured after every clean, leaving them out of the air you breathe- Up to 500x less dust exposure*. (*Based on third party-plume testing while emptying vs. Shark® Navigator® upright manual empty US/CAN NV130.) Clean & Empty has up to 40 minutes of runtime* (*in ECO mode, measured at the hand vacuum) with nozzle technology to auto-adjust to floor type, optimizing brushroll speed for deep carpet cleaning. The Powerfins® multi-surface brushroll gives you continuous cleaning contact to dig deep into carpets & directly engage hard floors with self-cleaning brushroll technology allowing for no hair wrap.
Dimensions (Overall): 43.5 Inches (H) x 10.43 Inches (W) x 14.69 Inches (D)
Weight: 11.24 Pounds
Features: Converts to Handheld, Cordless, Self-Cleaning Brushroll, Headlight, Rechargeable, Anti Allergen Seal
Capacity (Volume): 1.3 Liter
Model #: BU3521
Run Time: 40 Minutes
Wattage Required: 180 Watts
Number of Speeds: 2
Bag Type: Bagless
Cleaning Path Width: 10.43 Inches
Recommended Surface Application: Hardwood, Hard Floor, Multi-Surface, Carpet
Filter Type: Foam
Hose Length: 0 Inches
Power Source: Battery
Battery: 1 Non-Universal Lithium Ion, Required, Included
Warranty: 5 Year Limited Warranty. To obtain a copy of the manufacturer's or supplier's warranty for this item prior to purchasing the item, please call Target Guest Services at 1-800-591-3869
TCIN: 90571476
UPC: 622356647465
Item Number (DPCI): 329-00-5466
Origin: Imported
WARNING: Cancer and Reproductive Harm—www.P65Warnings.ca.gov www.p65warnings.ca.gov
If the item details above aren’t accurate or complete, we want to know about it.

Shipping details

Estimated ship dimensions: 28.8 inches length x 14.3 inches width x 10.4 inches height
Estimated ship weight: 18 pounds
We regret that this item cannot be shipped to PO Boxes.
This item cannot be shipped to the following locations: American Samoa (see also separate entry under AS), Guam (see also separate entry under GU), Northern Mariana Islands, Puerto Rico (see also separate entry under PR), United States Minor Outlying Islands, Virgin Islands, U.S., APO/FPO
This item ships in its manufacturer’s packaging, revealing what’s inside. ·

Return details

This item must be returned to any Target store.
This item must be returned within 90 days of the date it was purchased in store, shipped, delivered by a Shipt shopper, or made ready for pickup.
See the return policy for complete information.

Q: Can the battery be removed andcharged on its own

submitted by PRETTY GOOD - 5 months ago
  • A: The battery is removable, but it can only be charged in the vacuum. To charge the battery, place your vacuum on the Auto-Empty Dock. A full charge takes approximately 5 hours. Leaving the unit plugged in will not damage battery life.

    submitted bySharkNinja Product Expert - 5 months ago
    Brand expert

Q: how many batteries does it come with

submitted by tom taylor - 11 months ago
  • A: Battery: 1 Non-Universal Lithium Ion, Required, Included

    submitted byLmurphy418 - 7 months ago
  • A: The Shark comes with one removable rechargeable battery.

    submitted bySharkNinja Product Expert - 6 months ago
    Brand expert

Q: How is the bin the dust cup empties into emptied and cleaned?

submitted by TammyW - 3 months ago
  • A: The dust cup will automatically empty once docked. To manual empty the dust cup, detach the handheld vacuum from the wand by pressing the wand release button. Position the dust cup over a trash receptacle, then press the dust cup release button on the left side on the handheld vacuum.. Tap gently to empty contents. Remove any debris or hair from the cone-shaped screen inside the dust cup. Wipe the interior of the dust cup clean if needed. Close the dust cup door, pressing it until it clicks into place.

    submitted bySharkNinja Product Expert - 3 months ago
    Brand expert

Q: If by chance the battery dies completely can it be replaced?

submitted by Nancy - 5 months ago
  • A: Yes, the battery of the unit can be replace.

    submitted bySharkNinja Product Expert - 4 months ago
    Brand expert

Q: Do you need to hold the "trigger" on the base constantly? - or do you hit a power button and that's all.

submitted by ionicbond007 - 6 months ago
  • A: Press the button on the control panel on the back of the handheld vacuum to turn on power. To turn off power, press the button again.

    submitted bySharkNinja Product Expert - 5 months ago
    Brand expert

Q: Can you manually empty the vacuum or do you have to auto empty?

submitted by JT - 7 months ago
  • A: The dust cup will automatically empty once docked. To manual empty the dust cup, detach the handheld vacuum from the wand by pressing the wand release button. Position the dust cup over a trash receptacle, then press the dust cup release button on the left side on the handheld vacuum.. Tap gently to empty contents. Remove any debris or hair from the cone-shaped screen inside the dust cup. Wipe the interior of the dust cup clean if needed. Close the dust cup door, pressing it until it clicks into place.

    submitted bySharkNinja Product Expert - 6 months ago
    Brand expert

Q: do you have to hold a button down while vacuming? I saw another brand that you did.

submitted by TazD - 7 months ago
  • A: Just press the power button on the control panel on the back of the handheld vacuum to turn on power. To turn off power, press the button again.

    submitted bySharkNinja Product Expert - 6 months ago
    Brand expert

Q: How loud is it while using?

submitted by Nana - 9 months ago
  • A: The decibel level isn't available; however, it does have a 240 watt motor.

    submitted bySharkNinja Product Expert - 7 months ago
    Brand expert

Q: Do the filters need to be replaced.

submitted by Bubbita23 - 9 months ago
  • A: The filters for this vacuum are washable by rinsing them with water. Once down, allow them to air-dry completely for up to 48 hours before reinstalling to prevent liquid from being drawn into electric parts.

    submitted bySharkNinja Product Expert - 7 months ago
    Brand expert

Related Categories

Guests are saying

The Shark Clean and Empty Cordless Stick Vacuum has garnered high praise for its powerful suction, lightweight design, and innovative self-emptying feature. Guests appreciate its ability to tackle pet hair and dirt on various floor types with ease. The vacuum's cordless functionality and user-friendly design make it a convenient choice for busy households. With a removable battery and versatile attachments, it stands out as a reliable cleaning tool for families and pet owners alike.
    Summary created by AI from text of reviews reflecting recent feedback provided across different star ratings (includes incentivized reviews)
    4.6 out of 5 stars with 173 reviews
    60% would recommend
    5 recommendations

    Great Vacuum

    5 out of 5 stars
    Thumbs up graphic, would recommend
    Household - 6 days ago, Verified purchaser
    Absolutely love the versatility with the switching from hardwood to carpet automatically. The self emptying on the base is amazing!
    Did you find this review helpful?

    Great vacuum

    5 out of 5 stars
    Shellyshell - 16 days ago
    originally posted on sharkninja.com
    Image
    I love my new shark. It’s so great to just grab it and go. No more plugging it in, no more hassle emptying it. I give it a 10
    Did you find this review helpful?

    Would Recommend.

    5 out of 5 stars
    EMP93 - 25 days ago
    originally posted on sharkninja.com
    Image
    Bought Evelyn (this vacuum) about 2-3 weeks ago and to say I am in love would be an understatement. This vacuum works hard to keep my house clean. For years I refused to purchase or have any vacuum in my home now I literally vacuum every day and I love how clean my floors stay.
    Did you find this review helpful?

    Very Disappointed

    2 out of 5 stars
    Shel - 27 days ago
    originally posted on sharkninja.com
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    I received this as a gift a few months ago and already I am disappointed in its performance. The battery life claims of a minimum of 60 minutes are not true. If I’m lucky I might get 30 minutes and that is using the auto detect feature…on high suction, only about 15 minutes. There is also dust/dirt stuck in a section of the cup that doesn’t come out and cannot be accessed. If I could return it I would but it was a gift and the receipt is not available. Too bad because the suction and its lightweight design are great features.
    1 reply from SharkNinja team - 25 days ago
    Hello, Thank you for taking the time to leave a review. We're so sorry to hear that you’re having trouble with your Shark cordless stick vacuum. Please reach out to our team by phone at 1-800-365-0135, we'd be happy to look into this for you. Kind regards, Ninja Kitchen
    1 guest found this review helpful. Did you?

    Was hoping for better for the $

    3 out of 5 stars
    Thumbs down graphic, would not recommend
    Emarie - 27 days ago
    I have always used shark products. I love the auto empty feature however over time some tiny pieces of metal have somehow come loose and get attached to the magnet that helps the trap door stay closed. That is annoying. Also, on some rugs and surfaces it tends to just MOVE the dirt around instead of picking it up. Also the cord for the auto empty feature isn’t long enough since you have to keep it plugged in to use it…I tried to put in laundry room but the plugs are higher up in this area and it wouldn’t reach. Also there’s nothing to hold the attachments or even one attachment onto the actual vac so you have when you are going around the house. You have to carry it with you! Not as great as what the $ equaled
    1 reply from SharkNinja Product Expert team - 25 days ago
    Hello, Thank you for taking the time to leave a review. We're so sorry to hear that you aren't happy with your cordless vacuum. We will absolutely share your feedback on this Shark's performance and design with the relevant teams for consideration on future products. If you need any help with your product, please don't hesitate to reach out to our team by phone at 1-855-427-5127. Kind regards, Shark Clean
    Did you find this review helpful?

    Sub-par. I wish I had a better version..

    2 out of 5 stars
    Better options out there - 1 month ago
    originally posted on sharkninja.com
    Image
    Really wanted to love this vacuum. We have owned several Shark vacuums and recently replaced/"upgraded" our stick vacuum to this one. Love the auto-empty system. Hate the automatic carpet detection, it does not work well - very delayed in sensing carpet, only stays in carpet mode for a short time (switches to lower mode before you even move off carpet, so then you stand there wasting time trying to get it to sense carpet again..) And on some carpet (our living room area rug) it doesn't sense carpet at all...Our last vacuum had a switch we could control for carpet - loved that. This vacuum does not and I can only imagine the automatic sensor is going to go downhill ever more the longer we have it. I am guessing we will need to replace/"upgrade" again before a year has passed. On a positive note - the battery seems to last for me to vacuum my 1,200+ sq. foot upstairs (2 bathrooms, 2 bedrooms, living, dining, kitchen, laundry, and entryway) without dying!
    1 reply from SharkNinja team - 1 month ago
    Hello, Thank you for taking the time to leave a review. We're so sorry to hear that you aren't happy with some features of your Shark vacuum. We will absolutely share your feedback with the relevant teams for consideration on future products. If you need any help with your product, please don't hesitate to reach out to our team by phone at 1-855-427-5127. Kind regards, Shark Clean
    Did you find this review helpful?

    Great Vacuum

    5 out of 5 stars
    Kayy - 1 month ago
    originally posted on sharkninja.com
    Image
    I bought this about a month ago and I absolutely LOvE it! It is so lightweight and easy to use. THE best feature is when you dock it, it empties into the base!
    Did you find this review helpful?

    Not happy at all

    2 out of 5 stars
    LADYCIELO - 1 month ago
    originally posted on sharkninja.com
    Image
    Two weeks ago I bought this vacuum and I am not happy at all. The dust gets stuck in the chamber, the sucking power is weak, and the battery gets empty in less than 30 minutes.
    1 reply from SharkNinja team - 1 month ago
    Hello, Thank you for taking the time to leave a review. Based on the suction power you’ve described, it sounds like there’s a chance the vacuum may not be working as it should. Could you please give our team a call at 1-855-427-5127? We’d love to help ensure you’re getting the most from your product. Kind regards, Shark Clean
    Did you find this review helpful?

    Eh, I wanted to love it....

    2 out of 5 stars
    Kbutler868 - 1 month ago
    originally posted on sharkninja.com
    Image
    Bought this a few months ago but wanted to give it a good amount of time before I did a review. And I really didn't need to wait. Not at all happy with this vacuum. It's super loud and the suction is not good, at all. I end up having to go over the same spot about 4-5 swipes before everything is picked up. For the price of this vacuum and the Shark name I was sadly disappointed. Second guessing only using Shark products in my house.
    1 reply from SharkNinja team - 1 month ago
    Hello, Thank you for taking the time to leave a review. Based on the suction power you’ve described, it sounds like there’s a chance the vacuum may not be working as it should. Could you please give our team a call at 1-855-427-5127? We’d love to help ensure you’re getting the most from your product. Kind regards, Shark Clean
    Did you find this review helpful?

    Great home upgrade

    4 out of 5 stars
    Megan - 2 months ago
    originally posted on sharkninja.com
    Image
    Lightweight, easy to use, love the attachments. I wish the canister was a little bigger and the battery lasted a little longer - but honestly they are both easy things to work with. The auto empty and being cordless is a GAME CHANGER.
    Did you find this review helpful?

    Great cordless vac

    5 out of 5 stars
    Schwalls - 2 months ago
    originally posted on sharkninja.com
    Image
    Works awesome on both hardwood and carpet! I recommend this shark vac.
    Did you find this review helpful?

    (no review title)

    5 out of 5 stars
    PJPD - 2 months ago
    originally posted on sharkninja.com
    Image
    We got this vac about 3 weeks ago. We found it to be very easy to use. the self-emptying feature to be very handy. I have some reserves about the durability of the plastic connection between the motor housing and the tube to the floor sweeper: it seems too weak for long lasting. All other features are exceptional.. My wife likes the lightweight feature.
    Did you find this review helpful?

    Not what I was expecting

    1 out of 5 stars
    Shark - 2 months ago
    originally posted on sharkninja.com
    Image
    It doesn’t work as the publicity make it looks like
    1 reply from SharkNinja team - 2 months ago
    Hello, Thank you for taking the time to leave a review. We're so sorry to hear that you’re having trouble with your Shark Vacuum. Please reach out to our team by phone at 1-855-427-5127, we'd be happy to look into this for you. Kind regards, Shark Clean
    Did you find this review helpful?

    Great features

    5 out of 5 stars
    Punkin - 2 months ago
    originally posted on sharkninja.com
    Image
    Just bought this and love it..so light and durable...i also use this at work is why i got myself one
    Did you find this review helpful?

    Great vacuum for people with cats!

    5 out of 5 stars
    Kels - 3 months ago
    originally posted on sharkninja.com
    Image
    I bought this vacuum roughly two weeks ago and it has been a game changer! I have medium pile carpet and 3 cats, let me tell you, this vacuum picks up EVERYTHING (litter, hair, food, etc..). It has the suction power similar to a corded vacuum (leaves the same lines which is satisfying to see). So much better than my Bissel stick vacuum. The auto-empty system is very convenient too. I can use it on two bedrooms before it needs to be charged which is perfect for me as my place isn't that big. I highly recommend this vacuum to people with pets and even children!
    1 guest found this review helpful. Did you?

    Perfect vacuum for apartment living!

    5 out of 5 stars
    mxxxxj - 3 months ago
    originally posted on sharkninja.com
    Image
    Bought this when it was on sale back during the Superbowl in '24. Only just now getting around to using it (Feb/March of '25) as I have just moved into my new apartment! I love this vacuum! For a 2br 1ba it's the perfect size. I leave it plugged into the charging dock all day while at work and come home to vacuum and I am able to vacuum the whole apartment on one charge. I can see how this size might be too small to manage an entire house, but for my purpose, it's perfect. It was easy to assemble and has an intuitive design. The dust flap on the bottom of the vacuum that auto-empties can sometimes get stuck open if there are any debris that get caught when it empties (I had a little jump ring that got caught and must have stuck in the magnetic flap) but otherwise, it works wonderfully. I love the auto-empty feature, and I especially love that it traps allergens as I am allergic to dust and pollen. (Hence me vacuuming frequently.) I love that there's a "quiet" or "night-time" mode for the dock where it won't auto-empty if the button is toggled. I also really like how it auto-senses what type of flooring it's being used on. So far, it has worked really well on both the carpet and the hardwood/laminate floors of my apartment. Compared to a traditional vacuum, it's also quieter. Not in the sense that you could use it with a napping infant, but in the sense that I don't feel the need to put in headphones to block out the noise. I recommend this vacuum if you will be using it in a smaller space- anywhere from a studio to a 3-bed apartment would likely be good. Anything larger (i.e. over 1350 sqft) might require a break in between sections of your house to recharge and empty.
    Did you find this review helpful?

    Terrible

    1 out of 5 stars
    Laurie - 4 months ago
    originally posted on sharkninja.com
    Image
    Absolutely useless. Does not pick up the tiniest debris. I have a video of the vacuum not picking anything up. Really wish I hadn't bought this.
    1 reply from SharkNinja team - 4 months ago
    Hello, Thank you for taking the time to leave a review. We're so sorry to hear that you’re having trouble with your stick vacuum. Please reach out to our team by phone at 1-855-427-5127, we'd be happy to look into this for you. Kind regards, Shark Clean
    2 guests found this review helpful. Did you?

    Small box of fire

    5 out of 5 stars
    ippokratisk_5002 - 4 months ago
    originally posted on influenster.com
    Image
    [This review was collected as part of a promotion.] For such a small and compact heater, this little guy heats up a room surprisingly well. You barely otice its even on, and it's simple and easy to use and move around from room to room. The best part is the power supply can roll up and go into the unit for storage when not being used.
    1 guest found this review helpful. Did you?

    Storage

    4 out of 5 stars
    Mimi - 5 months ago
    originally posted on sharkninja.com
    Image
    There is no place to store the pet multi tool. There is a storage clip for the hand vacuum and duster crevice tool but nothing for the per multi tool. This tool can be easily misplaced.
    1 guest found this review helpful. Did you?

    Amazing

    5 out of 5 stars
    Yara - 5 months ago
    originally posted on sharkninja.com
    Image
    Best I ever had! It cleans so well. Suction is great. Very user friendly.
    2 guests found this review helpful. Did you?

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