Ninja DoubleStack XL 10qt, 6-in-1, 2-Basket Air Fryer, Space Saving Design SL401: Ninja Foodi, Dishwasher-Safe Parts
$209.99 reg $249.99
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The Ninja Double Stack Air Fryer is a versatile and efficient kitchen appliance that offers a large cooking capacity without taking up much counter space. Guests appreciate its dual basket design, ease of cleaning, and ability to cook multiple foods simultaneously at different temperatures. While some find the controls slightly complicated and the crispiness of food inconsistent, the overall performance and convenience make it a highly recommended product.
Summary created by AI from text of reviews reflecting recent feedback provided across different star ratings (includes incentivized reviews)
4.2 out of 5 stars with 144 reviews
design: 3.27 out of 5
ease of use: 3.73 out of 5
easy to clean: 3.82 out of 5
quality: 2.7 out of 5
value: 2.7 out of 5
43% would recommend
16 recommendations
5 out of 5 stars
8 March, 2026
originally posted on sharkninja-my
Worth every penny
With Ninja Air Fryer now I can cook 3 meal at one time.
5 out of 5 stars
Thumbs up graphic, would recommend
24 February, 2026Verified purchase
(no review title)
Works great and the price was right
1 out of 5 stars
Thumbs down graphic, would not recommend
12 February, 2026
(no review title)
Horrible I just bought the product and it was already broken
1 reply from SharkNinja Product Expert team - 2 months ago
Hello William, thank you for sharing your feedback. We’re very sorry to hear that your DoubleStack XL Countertop Oven arrived already broken. That’s absolutely not the experience we want for our customers. We understand how frustrating and disappointing this must have been, especially with a brand‑new purchase. We’d really like the opportunity to make this right. Please reach out to our customer support team at 1-800-365-0135, Monday to Friday from 9 a.m. to 9 p.m. ET, and Saturday from 9 a.m. to 6 p.m. ET, so we can assist with troubleshooting or exploring warranty options. Warm Regards, Ninja Kitchen
1 out of 5 stars
Thumbs down graphic, would not recommend
4 January, 2026Verified purchase
(no review title)
I did not get the 2nd item and was told credit would be issued 5 times now and they have all been lies
1 reply from SharkNinja Product Expert team - 3 months ago
Hi Laurie, Thank you for your review. We’re so sorry to hear about your experience and the frustration this has caused. Since your order was placed through Target, we recommend reaching out directly to the Target Customer Support team for assistance with your credit. They’ll be able to review your order and resolve this issue for you. Kind regards, Ninja Kitchen
1 out of 5 stars
Thumbs down graphic, would not recommend
17 December, 2025Verified purchase
Poor quailty.
This item stopped working after 3 months.
1 reply from SharkNinja Product Expert team - 3 months ago
Hi there, Thank you for taking the time to provide your feedback on the SL401 Ninja DoubleStack XL. We totally understand how frustrating this must be. Something doesn’t seem quite right about how your appliance is performing, and we’d like to make sure it’s working as it should. We will be more than happy to assist. Please call our support team at 1-800-365-0135, Mon – Fri 9am — 9pm ET | Sat. 9am — 6pm ET (NINJA) so we can assist. Kind regards, Ninja Kitchen
1 out of 5 stars
Thumbs down graphic, would not recommend
8 December, 2025
Save yourself the frustration and avoid this brand completely
I bought their air fryer less than a year ago, and the problems started early. I liked the idea of the stacked dual-drawer layout to save counter space, but the actual design just didn’t hold up. Because of where the fans are placed, the cooking was uneven. I had to open the drawer halfway through and move the food around just to get it to cook properly. I dealt with it because I really wanted the vertical design to work, but it was frustrating right from the start. On top of that, every time you turned it on, it blasted a loud beeping noise with no option to silence it. Annoying and totally unnecessary. Then one of the drawers stopped emitting hot air altogether. The fan just quit, so only one compartment actually cooked anything. That’s when I reached out for warranty service, and things went downhill fast. Their warranty process is a complete nightmare. They make you jump through endless hoops, demand multiple photos, and every time I sent exactly what they asked for, they claimed something was wrong with the pictures. It honestly felt like they were trying to avoid honoring the warranty. And even if they eventually approve your claim, they still expect you to pay a $25 shipping fee to get a replacement for their defective product. The quality is poor, the design is flawed, and the customer service is the worst part of all of it. If you want an air fryer, go with Cosori. I’ve never had a single issue with them, and their customer service is fantastic. Please don’t waste your money on this brand. You’ll end up disappointed, frustrated, and stuck dealing with a company that doesn’t stand behind its own products. Stay clear.
1 reply from SharkNinja Product Expert team - 4 months ago
Hi Talia, Thank you for sharing such detailed feedback. We completely understand how frustrating and disappointing this experience must have been from the uneven cooking to the challenges you faced during the warranty process. This is absolutely not the experience we want for our customers, and we’re truly sorry you had to go through this. Your feedback has been carefully noted and will be relayed to our internal team to address both product design and service improvements. We’d appreciate the chance to make this right for you. Please contact our Ninja customer service team at 1-800-365-0135, available Monday to Friday from 9 a.m. to 9 p.m. ET and Saturday from 9 a.m. to 6 p.m. ET, and we’ll do everything we can to assist you. We value your honesty and hope you’ll give us the opportunity to restore your confidence in our brand. Kind Regards, Nina Kitchen NA
1 out of 5 stars
7 December, 2025Verified purchase
Sad it came this way
Hopefully this air fryer works with package being beat up. This is a Christmas gift and looks like crap
1 reply from SharkNinja Product Expert team - 4 months ago
Hello Tommy, thank you for your review and for bringing this matter to our attention. We're truly sorry to hear about your experience with the Ninja SL401. We understand how disappointing it can be to receive a damaged package, especially since it was intended as a Christmas gift. This isn't reflective of our usual standards, and we can imagine how frustrating this situation must be for you. Your feedback is invaluable to us as it helps us improve and serve you and others better in the future. If you have any further concerns or need assistance, please don’t hesitate to contact Target customer service. You can reach them at 1-800-440-0680, available Monday to Friday from 7 AM to 11 PM CST, and Saturday to Sunday from 8 AM to 9 PM CST. We genuinely appreciate you sharing your thoughts with us! Kind regards, Ninja Kitchen NA
1 out of 5 stars
Thumbs down graphic, would not recommend
22 November, 2025Verified purchase
Unimpressive
Not a great item. Was looking for something to work with our smaller counters, but the heat vents on the side for this unit (not the back like other air fryers) and the timer and fan/hearing element still run with you pull out a basket. Don’t get it and try it out from Target because we had a lot of pushback when we went to return it even though they are going to put it back on the floor with a clearance tag, I’m sure; we only had the item opened for about a week so the pushback wasn’t warranted.
1 reply from SharkNinja Product Expert team - 4 months ago
Hi there, Thank you for your feedback. We’re disappointed to hear the DoubleStack air fryer didn’t meet your expectations, and we understand how frustrating this must be especially with the difficulty you experienced when trying to return it at Target. For further assistance please contact Target’s customer service team at 1-800-440-0680, available daily from 7 a.m. to 10 p.m. local time, and they’ll do everything they can to make this right. Kind Regards, Ninja Kitchen NA
1 out of 5 stars
17 November, 2025
originally posted on sharkninja.com
Beyond disappointed
I bought this to replace my single drawer Ninja air fryer so that I could have two drawers that cook independently but boy do regret that! This does not work very well at all. We tried to cook premade hashbrowns but they took a very long time to crisp up. Same thing with tater tots and everything else we have cooked. I am beyond disappointed and can't return it because we threw away the box like a bunch of dunderheads.
1 reply from SharkNinja team - 5 months ago
Hello, Thank you for taking the time to provide your feedback. We understand this has caused a lot of frustration, and we're here to help. Something doesn’t seem quite right about how your product is performing; we’d like to make sure it’s working as it should. Please give our team a call at 1-800-365-0135 so we can help with this. Our team is available: 📞 Monday–Friday: 9 a.m. – 9 p.m. ET 📞 Saturday: 9 a.m. – 6 p.m. ET Kind regards, Ninja Kitchen
5 out of 5 stars
Thumbs up graphic, would recommend
15 November, 2025Verified purchase
(no review title)
I love it
5 out of 5 stars
Thumbs up graphic, would recommend
20 October, 2025Verified purchase
Ninja always gets my money
It was just what I expected!
5 out of 5 stars
19 October, 2025
originally posted on Shark Ninja ANZ
Very Good Buy
We've been using our double stack for 3 weeks & very happy. There are a few online videos saying this model doesn't cook well or evenly. I totally disagree with this, very even cooking & on par or less cooking time than an air fryer we've had in the past. Only downside is our dog doesn't like the fairly loud bleeping!
3 out of 5 stars
Thumbs down graphic, would not recommend
6 October, 2025Verified purchase
Buttons are cheap
I love that this is somewhat compact and out of the way. It also fits perfectly under the cabinets. I strongly dislike the button functions on this. It is a cheap plastic that I do believe will eventually crack.
1 reply from SharkNinja Product Expert team - 6 months ago
Hello there, Thank you for taking the time to leave a review. We're so sorry to hear that the button design on the DoubleStack didn’t meet your expectations. We’re glad to hear you liked the compact size and how well it fits under your cabinets. We’ll absolutely share the feedback you’ve provided with the relevant teams for consideration on future products. Kind regards, Ninja Kitchen
1 out of 5 stars
7 September, 2025Verified purchase
Flawed design, find something else
Even with giving an appropriate distance away from all sides (1 foot each side) & the top (5 inches above), this device heats up dangerously hot. The only side that doesn’t heat up badly is the vented side, and it would have actually been decent if there were vents on each side and the top. It got so hot that pieces of plastic under my upper cabinets began to melt. Customer support from Shark Ninja was garbage, they understood what I had to say but had zero solution. For something so expensive, why not prioritize a design that makes the product safer? As easy as it was to clean and cook, safety is a massive concern.
1 reply from SharkNinja Product Expert team - 7 months ago
Hi Tyler, Thank you for taking the time to share your detailed feedback on the Ninja DoubleStack XL Air Fryer. We're truly sorry to hear about your concerns regarding the heat output and the impact it had on your surrounding kitchen surfaces. Safety is always a top priority in our product design, and it's disappointing to learn that your experience did not reflect that. We appreciate you noting the clearance you allowed during use, and your insight into the vent placement is valuable. While we’re glad to hear the unit performed well in terms of cleaning and cooking, we understand how critical it is that you also feel confident in its safety during operation. Your comments will be shared with our product development team as part of our continuous effort to improve. If you're open to further support, we’d like to review your case and see what more can be done. Please reach out to us at 1-800-365-0135 so we can assist you directly. Kind regards, Ninja Kitchen
3 out of 5 stars
4 July, 2025
originally posted on sharkninja.com
Nice but…
Although I love all my Ninja products I unfortunately had to send this back. Yes it has dual baskets but I find them to be too small for my needs.
1 reply from SharkNinja team - 9 months ago
Hello Berny, Thank you for taking the time to leave a review. We're so sorry to hear that the Ninja DoubleStack wasn’t the right fit for you. We will absolutely share the feedback you’ve provided with the relevant teams for consideration on future products. We hope you’ll give our products another try in the future. Kind regards, Ninja Kitchen
5 out of 5 stars
23 June, 2025Verified purchase
Easy and compact
First under our cabinets and takes less space. Love being able to cook multiple things at different temps. Very intuitive to use.
2 out of 5 stars
14 June, 2025
originally posted on sharkninja-sg
Rubber rings safe?
The rubber rings on the trays , isnit safe to use on such high heat?
5 out of 5 stars
25 April, 2025
originally posted on Shark Ninja ANZ
So versatile
Had it for around 6 months, used the wall oven only a handful of times in that period
1 out of 5 stars
17 April, 2025
originally posted on sharkninja.com
Save your money!
I was so excited to buy this… i am terribly disappointed. It takes forever to cook anything, the holes for venting in the back of the basket make it a mess! Crumbs, oil, and juice fly out the back… truly that’s enough to hate it but there’s more… if you leave a basket open or have to open it to take food out it completely kills the heat in the other basket… the space you save on your counter is taken by how far you have to place things to avoid the heat coming out the side instead of the back. Wish I could return or exchange! Only was offered a small discount on a different one.
1 reply from SharkNinja team - 11 months ago
Hello, Thank you for taking the time to leave a review. We're so sorry to hear that your Nina Air Fryer isn't working. 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 1-800-365-0135. Kind regards, Ninja Kitchen
3 out of 5 stars
1 April, 2025
originally posted on sharkninja.com
Does not stack up in my book.
This is the first time I officially have to say I am not happy with a ninja product. I bought this because I thought it would be a great space saver in my kitchen considering I don't have a lot of counter space. And I was super excited because I would be able to cook chicken wings in it all at one time instead of having to do batches of 8 to 10 at a time. When I first received it I noticed that it takes longer for stuff to cook in it and things don't really get crispy. I like my chicken wings a little bit on the crispy side when it comes to the skin and I can't get them like that with this. It takes me twice as long to cook items in it that I would normally cook in another air fryer in 5 to 6 minutes. When you pull the baskets out The machine keeps running you have to actually pause it which was not something I had to do with my previous air fryer. When I just want to heat things up it takes even longer then what it should. I think the idea of this is really great but having both baskets connected is not fun as I was wanting to do broiling to crisp up my wings a little bit and I can only broil in one and not both of them at the same time. If you're one of those people that love to make the mac and cheese in your air fryer you cannot do it in this one. I did find them easy to clean which was great All the food comes right off when you put the things in the sink and wash them. But this is a two-part system that runs together and it just doesn't cook the way a regular air fryer does that doesn't share the same cooking elements. I'm an avid Ninja user probably 90% of the appliances in my house are from Ninja all the way from my air fryer to the Ninja Swirl we just bought. But this one just doesn't cut it for me, I wish I could return it but I believe I've had it too long at this point.
1 reply from SharkNinja team - 1 year ago
Hello, Thank you for taking the time to leave a review. We're so sorry to hear that you were having trouble with your DoubleStack Air Fryer, and that you want to return the product as a result. We will absolutely share your comments with the relevant teams for consideration on future products, and we hope you’ll give our products another try in the future. If you need any further assistance with your product, please don’t hesitate to reach back out to our team at 1-800-365-0135. Kind regards, Ninja Kitchen