Shark PowerDetect Upright Vacuum AZ3901 12" Cleaning Path Purple: HEPA Filter, Pet Hair, Multi-Surface
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$349.99 reg $549.99
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This vacuum offers powerful suction and effective cleaning capabilities, making it a great choice for households with pets and various floor types. Guests appreciate its ability to pick up dirt, hair, and debris efficiently. However, concerns arise regarding its weight, cord stiffness, and issues with clogging, particularly with pet hair. Overall, it is a solid investment for deep cleaning, but potential buyers should consider its limitations in maneuverability and design.
Summary created by AI from text of reviews reflecting recent feedback provided across different star ratings (includes incentivized reviews)
3.8 out of 5 stars with 373 reviews
52% would recommend
25 recommendations
5 out of 5 stars
Thumbs up graphic, would recommend
16 July, 2026Verified purchase
Great purchase!
Absolutely love this vacuum!!! One of the best I've ever had. Has great suction, love the attachments. Is a little heavy but was expecting that since it has a larger motor. Highly recommend!!!
2 out of 5 stars
12 July, 2026
originally posted on sharkninja.com
After doing good at 1st it isn't working like it s
When I 1st got it it seemed to work well. Now I have to keep emptying the small cup often because it doesn't get my cat and dog hairs. And I keep cleaning the filters after every use. My other lift away has a bigger collection cup and picks the hair up on the 1st pass. Prefer the left away. Mad I spent the money on this one when it has left me down. And saying it gets pet hair you would think it would have a bigger collection cup.
1 reply from SharkNinja team - 5 days ago
Hi there, Thank you for sharing your feedback. We're sorry to hear that your PowerDetect Upright hasn't been meeting your expectations, especially when it comes to picking up pet hair and the frequency of emptying the dust cup and cleaning the filters. We'd like the opportunity to troubleshoot these concerns with you and help ensure your vacuum is performing as intended. Please reach out to our team using the link below so we can take a closer look and assist further: https://support.sharkninja.com/contact-us We appreciate you bringing this to our attention and hope to help improve your experience. Sincerely, Shark Home
5 out of 5 stars
12 July, 2026
originally posted on sharkninja.com
Long time Sharp customer
Long time Sharp vacuum user. No other company has this level of suction power. There is however a few features that are not our favorite. The electronic motor has a delay that before you can start sweeping. The quality of the material is honestly disappointing. After a few weeks of use we can feel the connection between the wand and the sweeper head is starting to wear. The worst item of this model is the quality of the electric cord. At this price point one would think the cord would be more flexible.
5 out of 5 stars
11 July, 2026
originally posted on sharkninja.com
Best money I’ve ever soent
In 15 years I’ve owned two shark vaccuns. I have my daughter my first one when she moved out. I bought this one and it’s even better than the first. I have two cats and this picks up their fur amazingly well. My daughters just quit working as it’s pretty old. I am going to recommend this one for her.
1 out of 5 stars
11 July, 2026
originally posted on sharkninja.com
Constantly tripping power
This vacuum is constantly tripping our power when switching between modes. Absolutely hate it. Smarter is not always better
1 reply from SharkNinja team - 4 days ago
Hi Jen, Thank you for sharing your experience. We're sorry to hear your POWERDETECT Upright is tripping the power when switching between modes. We know that's the last thing you want when you're just trying to get the vacuuming done, and it can really take away from the experience. We'd recommend taking a look through our troubleshooting guide, as it may help identify what's causing the issue: https://support.sharkninja.com/article/AZ4000-Series-Shark-POWERDETECT-Upright-Vacuum-Troubleshooting-Guide-ca?redirect=false If the problem continues, we'd love the opportunity to work through it with you and take a closer look at your unit. Please reach out to our team using the link below: https://support.sharkninja.com/contact-us We appreciate your feedback and hope we can help get things working the way they should. Sincerely, Shark Home
5 out of 5 stars
10 July, 2026
originally posted on sharkninja.com
Suction king
I don’t normally take the time to write reviews but this vacuum is amazing!! We have pets and very thick carpet & it’s not a problem for this vacuum. No issues so far. I am very pleased!
2 out of 5 stars
7 July, 2026
originally posted on sharkninja.com
Not built for area rugs
I bought this to replace my Shark Navigator. I like the detect system, but it does not register well from hardwood to rugs. With the roller on the rugs, you cant pull backwards, it jams up and the vacuum stops. My Navigator I was able to flip to plush carpet and could do the rugs, even by switching to plush, this vacuum cant do rugs, the roller jams and you have to shut off and restart. I do have plush carpet in the basement, and it does fine, just seems to have issues with area rugs. I have a long coat dog so I wanted something that wasnt going to tangle and plug while using.
1 reply from SharkNinja team - 13 days ago
Hi there, Thank you for taking the time to leave a review. We're sorry to hear you're experiencing difficulty with area rugs on your POWERDETECT vacuum. We understand how frustrating this can be, especially when you were expecting an upgrade from your Shark Navigator and need a vacuum that can handle pet hair from your long-coated dog. We recommend reviewing the troubleshooting steps in the guide below: https://support.sharkninja.com/article/AZ4000-Series-Shark-POWERDETECT-Upright-Vacuum-Troubleshooting-Guide-ca If the troubleshooting steps do not resolve the issue, the guide will direct you to our Customer Service team for further assistance. We also appreciate your feedback regarding the vacuum's performance on area rugs and the transition from hard floors to rugs. We'll be sure to pass your comments along to our product team for review. Kind regards, Shark Home
5 out of 5 stars
4 July, 2026
originally posted on sharkninja.com
AMAZING
This thing has suction like no other. I was so disgusted the first time I vacuumed only part of my home. I vacuum all the time but when I used the shark detect, it pulled up SO MUCH dirt. My carpet even looks like it was cleaned. Amazing!
5 out of 5 stars
1 July, 2026
originally posted on sharkninja.com
Excellent MachineBack Saver
My son got me the power detect upright this has been the Best vacum. It is self propelled Excellent suction power you can see it sucking the dirt to it. Wow itz awesome my son got one for himself as well thhat his 4 yr old daughter uses. We are a Shark family i do rsccomend the scent pod is excellent and i like that you can switch power from carpet to hardwoods. Keep up the excellent work. I just seen the new shark transformer trio gosh now im gonna have to trade up and get one of them. Gotta have it. Only the Best at picking up hair and not cling to roller great edge suction the dirt just bounces right to it and if theirs dirt it detects it and kicks in high gear and once its got it all you can hear motor slow down i love it and very light weight. My back is broke and i still can use my shark.
4 out of 5 stars
25 June, 2026
originally posted on sharkninja.com
Short hose for attachments
I love this vacuum but for one thing. When you detach the hose to use the tools and clean above floor, the hose is very short. When you quickly reach the limits, the whole unit tips over. Dust in the collection cup gets stirred up and sucked into the filter. This would all be correctable if Shark made an extension to the hose as an accessory. They do not. They should IMHO.
1 out of 5 stars
20 June, 2026
originally posted on sharkninja.com
Don't waste your money!
Most miserable vacuum cleaner ever. Don't waste your money. I had a Dyson for years but when we had a smoke incident in our house last fall and I needed a vac quickly and I couldn't find another Dyson I purchased this Shark. Let me tell you what I believe are poor design issues: 1) Very heavy to carry and to push. 2) Hose isn't long enough so when you need to vacuum using the hose and an attachment the vacuum repeatedly falls over. So now I have to try and balance the vac with my foot while vacuuming. 3) It's dangerous. I was vacuuming under the bed and vac fell over and hit me in the head. The hard plastic on the vac really hurt. Keep kids and pets away. 4) When you're using the hose to vacuum the touch choices to select different carpet/floors are in the way and you'll accidentally keep changing the type of flooring. 5) You have to keep cleaning the sensors or the vacuum will keep changing the selection of the type of flooring because it can't sense correctly. 6)Dirt cannister is on the front so you can't vacuum under anything. I'm sorry for straying Dyson. One day I hope to be able to return to you!
1 reply from SharkNinja team - 27 days ago
Hi there, Thank you for taking the time to share your detailed feedback on the POWERDETECT. We’re truly sorry to hear about your experience, and we understand how frustrating this must be. To help improve usability, you can place the vacuum into Lift-Away mode to make it easier to move and handle. You may also find it helpful to attach your cleaning tool directly to the end of the wand with the pod removed, as this can provide better control, extend reach, improve maneuverability, and make cleaning under furniture easier. Your feedback regarding safety and the touch controls has been noted and shared with our team. If you continue to experience issues, including concerns with the sensors, please don’t hesitate to reach out to us for further assistance. We appreciate you giving Shark a try and hope we can work toward a better experience for you. Support Link: https://support.sharkninja.com/contact-us Kind regards, Shark Clean
3 out of 5 stars
14 June, 2026
originally posted on sharkninja.com
Great suction, but changed some features.
This is the third Shark vacuum that I have owned, and I have to say, I’m disappointed in this newest design. The biggest issue is that you can’t separate the canister from the stick. That was always the best feature so you could get under furniture. Now you have to separate the stick from the canister and use a floor attachment, which doesn’t come with the machine. Another thing they changed was they shortened the electrical cord by about 5 feet. My old Shark I could clean my entire house using 3 outlets, now it takes 5. It still has the same great suction, but to change some of the best features, I don’t know if I would buy another one.
1 reply from SharkNinja team - 1 month ago
Hello there, Thank you for your continued loyalty and for sharing your feedback. We’re sorry to hear this model didn’t meet your expectations, especially regarding the design changes and cord length. We’ll be sure to pass your comments along to our product team. We’re glad the suction is still working well, and we appreciate your honest review. If you need further assistance, feel free to contact our customer support team. https://support.sharkninja.com/contact-us Kind Regards, Shark Home
5 out of 5 stars
13 June, 2026
originally posted on sharkninja.com
Are you kidding me?
I had an expensive Dyson vacuum cleaner that I felt like just wasn’t getting the dog hair up well enough. So I took a leap and bought this Shark AZ 4000. I am so disgusted that people were in my house with all that dog hair in my carpet when I thought it was clean! I vacuumed the same carpet seven times over the course of the last two days and I’m still getting old dog hair out of it. If you have a dog you need this vacuum. I’m ordering one for all of my children!
5 out of 5 stars
11 June, 2026
originally posted on sharkninja.com
Great vacuum
Just bought this vacuum. So far im highly impressed. It has some very strong suction. Love everything about it.
1 out of 5 stars
Thumbs down graphic, would not recommend
5 June, 2026Verified purchase
Don't buy it
item is awful. power detect always reverts to another option on its own, smells, you can't find the replacement filters and odor neutralizer cartridge, they are always out of stock. I have to turn it off and back on to revert settings to start back to a powerful suction. I've had this product for 1 year now and it was not worth the $500 I spent on it.
1 reply from SharkNinja Product Expert team - 1 month ago
Hi Martha, Thank you for your review and for bringing this to our attention. We’re disappointed to hear about the issues you’ve experienced, including the Power Detect settings changing on their own, the odor concerns, and the difficulty finding replacement filters and odor neutralizer cartridges. We’d like to provide product support and help troubleshoot this with you to better understand what may be causing these issues. Please contact our customer service team at 1-855-427-5127, Monday to Friday from 9 a.m. to 9 p.m. ET, or Saturday from 9 a.m. to 6 p.m. ET, and we’ll be happy to assist. Kind regards, Shark Home
5 out of 5 stars
3 June, 2026
originally posted on sharkninja.com
WOW!
I bought this brand and model after doing lots of research, as I have 4 dogs and want to get my carpets and furniture super clean. I just received mine and used it. Let me say, WOW! The power on this thing is AMAZING! I vacuumed half my carpet with my Dyson and the other with this and its amazing how much more it pulled up! I then went over the other half and pulled up more. Its already trying to fluff up the carpet thats matted. I already love this vacuum so much! I won't buy a different brand after using this one.
5 out of 5 stars
1 June, 2026
originally posted on sharkninja.com
AMAZING!
I've used this product just twice and I'm already in love. This is my third Shark and I've loved all three of them. But the features on this one are truly amazing. Worth every penny.
2 out of 5 stars
31 May, 2026
originally posted on sharkninja.com
I’ve had better
I was hoping this would be better than the reviews, but I had to find out for myself. It keeps powering down when it thinks it’s clean. Believe me, it’s not clean. I could fill the container with pet hair multiple times going over the same areas in an hour with my last Shark. Tools keep falling off the storage pegs. Cord is stiff and a pain to deal with. Dirt receptacle is small. IMO, not worth the price. I’ve had better.
1 reply from Sharkninja team - 2 months ago
Hi Liz, Thank you for your feedback. Having the unit stop mid-clean, struggling with pet hair pickup, and dealing with design issues like loose tools and a stiff cord can take away from the overall experience. That’s really frustrating, and it makes sense you’d feel let down when the performance isn’t matching what you expected. Something about what you’re describing doesn’t sound quite right. This unit does not have a feature that shuts it down once it thinks an area is clean, so it’s possible you may be experiencing an intermittent power issue instead. We’d recommend going through our self‑help troubleshooting guide: https://support.sharkninja.com/en-CA/article/AZ4000-Series-Shark-POWERDETECT-Upright-Vacuum-Troubleshooting-Guide-ca If the behavior continues after following those steps, please follow the directions provided at the end of the guide. Alternatively, please contact us directly here so we can review your unit further and assist you: https://support.sharkninja.com/en-CA/contact-us Kind Regards, Shark Home
1 out of 5 stars
Thumbs down graphic, would not recommend
22 May, 2026Verified purchase
Never been so disappointed with shark and spent so much money
This thing is clunky, ruined our rugs, the "self cleaning" roller gets clogged all the time I can't vacuum my washable large area rug with it because its too thin and tries to vacuum it up. its ruined all the edges and corners of my rugs. its so heavy to do stairs with.the self roller clogs all the time with my hair and mt dogs hair.. at least I can see it clogged cuz all the hair sticks out. and this is the most expensive vacuum by far I have bought from shark.. so disappointed..
1 reply from SharkNinja Product Expert team - 2 months ago
Hi there, thank you for sharing your feedback. We’re very sorry to hear about the issues you’ve been experiencing with reduced suction, clogs in the self-cleaning roller, and difficulty using the unit on rugs and stairs. We understand how frustrating this must be, especially when it doesn’t align with what you’ve come to expect from our products. This is certainly not the performance we want for you, and we’d appreciate the opportunity to look into these concerns more closely to ensure everything is functioning as it should. Please reach out to our customer support team at 1‑855‑427‑5127, available Monday to Friday from 9 a.m. to 9 p.m. ET and Saturday from 9 a.m. to 6 p.m. ET. Our team will be happy to review the issues with you and help determine the best next steps to resolve them. Kind regards, Shark Home
5 out of 5 stars
20 May, 2026
originally posted on sharkninja.com
Perfect vacuum
I’ve had this vacuum for a little over a year now and out of the 3 vacuums I have had before, this one is by FAR the BEST. I love the accessories, I’ve never had any mechanical issues, it picks up dust, dirt, hair, cat litter, etc. SO WELL. I’ve never gotten any hair tangled in the brush roll and the first brush roll is so easy to take out and clean around that area.