Shark

Clean & Empty Cordless Stick Vacuum & Auto-Empty System BU3521

Shark Clean & Empty Cordless Stick Vacuum & Auto-Empty System BU3521

Running these analyses costs money. Buy through my links to help keep lights on! I may get a small commission.

Overall

#422 in

Vacuum Cleaners

according to Reddit Icon Reddit

Sentiment score67% positive
4
1
1
Last updated: Jun 6, 2026

Reddit Reviews

Reddit Iconnovacheesemf
4 months ago

I have the shark… maybe it’s just called shark clean and empty? With the rubber fins. I have not had to open it up to cut fur off the fins ONCE IN A FULL YEAR. Life changing. I have the one with auto empty. I use a corded for a weekly clean because obv a cordless can’t clean as well, but I’m so sold on this specific cordless shark. I have long hair and my husky has long hair, and I can’t believe it hasn’t tangled.  Buy a second battery at the same time (removable and replaceable battery!!!), because it’s the first part that will go for any cordless vac, but mine is still good one year in. You know they'll stop making it eventually though. I will hunt for a link to add here soon so you know the specific one I’m talking about  Edit: found it so much faster than I thought I would https://www.homedepot.com/p/Shark-Clean-and-Empty-Bagless-Cordless-HEPA-Filtration-Stick-Vacuum-and-Auto-Empty-System-Multi-Surfaces-in-White-Peacock-BU3521/330507762

Reddit IconZaroTyrson
10 months ago

Asi záleží, co od toho všechno chceš... Dyson nemám, na tu cenovku mi prostě přijde, že má strašně levný plasty, nicméně samotný výkon asi bude top. My nakonec šli do Conceptu (VP6300 5v1) a na 2kk naprosto dostačuje. Plus má stanici na vysypání bordelu, což je super vzhledem k tomu, že máme doma psa (dlouhosrstého). Ještě mám zkušenosti s Sharkem cordless BU3521, který je mnohem víc basic, ale byl jsem překvapený, jak dobře uklízí a jak si poradí i s psí srstí z koberce. Chytl jsem ho asi za 6,5 (I se stanicí) a za tu cenu je to pecka. Nicméně u něj vidím, že konstrukce má mouchy, co by mohly zkrátit životnost.

Reddit IconIAm_Moana
10 months ago

Love our Shark stick vacuum. Got the Evopower System IQ+ with the auto empty dock. Works great, suction is as good as a Dyson, it's light and very nifty, and only $400 (got it from Shopee on one of their sale days). We've owned 2 previous Dysons which all died around the 3-year mark. Don't think they're worth the price, especially if they're not longer lasting than a cheaper brand. Also all the frills and attachments are unnecessary imo.

Reddit Iconblahblahblah01020
10 months ago

I got a Shark Clean & Empty Cordless Stick with Motorized Hand Tool about 6 weeks ago. I love it. It has a standing charging dock so you don’t have to hang it on the wall. When you put it on the charging dock, it automatically empties the vacuum into the base. You can also remove the handle/motor portion of the vac and it becomes a small handheld vac, which I love. Oh, and it also automatically senses if you are vacuuming on carpet or hard floors and automatically adjusts the settings for you.

Reddit IconEquivalent-Low-8071
8 months ago

Do not do that vacuum!! I got one had it for a week and returned it.

Reddit IconImpressive-Yak-9726
2 months ago

Shark Clean & Empty Cordless Stick Vacuum is amazing with golden hair. I vacuum every day and the auto-emptying feature is the best. The hair doesn’t clog!

Reddit IconLogHelpful6370
6 months ago

I got a shark cordless vacuum clean and empty and i will never in my life have a corded vacuum ever again lol i use mine almost everyday. It lasts for 50 mins and it’s plenty of time for my house. I also use it for my car and couch.

Reddit IconFlat_Direction1452
5 months ago

Avoid the sharks, they require a lot of maintainence. The self empty shark in particular has a grand total of 6 filters which need cleaning regularly, 3 in the vac and 3 in the dock. The dock does not clean the filters in the vac. Far from saving you work, it creates an entirely different headache. Best one there is probably the v10 if you absolutely must buy from Costco.

Rankings by Use Case

Top recommendations from others in the same boat

Other Reddit Recommendations: