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Customer Reviews for Ninja Prestige Smart XL Air Fryer & Countertop Oven, Silver (DT551)

Ninja Prestige Smart XL Air Fryer & Countertop Oven, Silver (DT551)~#|#~4C2C1854-5811-4B23-892F161064AA8E08_sc7
Ninja Prestige Smart XL Air Fryer & Countertop Oven, Silver (DT551)~#|#~7A83DC8B-B307-400F-B92B1AC4A20476F2_sc7
Item # : 24627221
Model # : DT551
Unlock Perfectly Crisp Meals with the Ninja Prestige Smart XL Air Fryer & Countertop Oven—10x More Convection Power and 10 Cooking Functions!
  • SMART SURROUND CONVECTION : Our high velocity fan and rear heat source combine to completely surround food for all-around crisp.
  • PRO COOK SYSTEM: Achieve the perfect doneness from rare to well done at the touch of a button with the integrated Pro Cook System with Auto Temp Detect Intelligence —no guesswork required.
Price is $429.99
Free delivery by Mon, Mar 30
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Over 30
4.5
103 reviews
5 star
78%
4 star
12%
3 star
1%
2 star
3%
1 star
7%
Most helpful positive review
Posted Jan 12, 2026
The Next Generation of Home Food Upgrades.
Wow! What a Joy. Are you ready to go from a toaster oven to this.Fast pre heat, great lighting,easy operation. Just a little Cooking Spray and foil ensures years of the most up to date way to safely prepare your favorite meals.
VS
Most helpful critical review
Posted Mar 7, 2026
Stopped working within 6 months
Completely stopped working within 6 months. Worked great till then.
Most recent reviews
joefus
Reviewed at:
sharkninja.com
Posted Mar 20, 2026
SO SO.......
I have the first version of this oven and it has been replaced by Ninja once and now the second one has died. I am really torn as to weather to purchase another Ninja oven. This one did cook great but I is a real bear to clean. They really should design a self cleanning cycle on these ovens. Because of the fan you cannot use any type of cleanner and if the exposed ...
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Response from Staples :
Hi there, Thanks for sharing your experience with your Ninja oven. We’re sorry to hear that you’ve had repeated issues and understand how frustrating that can be, especially when you enjoyed the cooking performance. We also hear your feedback about cleaning challenges and concerns with smoke from residue on the heating elements. Your comments are incredibly valuable as we continue to innovate and improve our products. Our team has reached out to you directly via email to assist further and explore the best solution for you. Sincerely, Ninja Kitchen
March 20, 2026
RG210
Reviewed at:
sharkninja.com
Posted Mar 7, 2026
Stopped working within 6 months
Completely stopped working within 6 months. Worked great till then.
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Response from Staples :
Hi there, Thank you for taking the time to share this feedback with us. We’re really sorry to hear your air fryer oven stopped working within six months. We understand how frustrating that is, especially when it had been performing well before. Please click the link below to try our self‑troubleshooting steps. If the issue isn’t resolved, you’ll be guided to our customer service team, where we can take a closer look and assist you further. https://support.sharkninja.com/en-CA/article/DT550-Series-Ninja-Prestige-Smart-XL-Air-Fryer-Countertop-Oven-Troubleshooting-Guide-ca Kind regards, Ninja Kitchen
March 9, 2026
KB1701
Reviewed at:
sharkninja.com
Posted Feb 27, 2026
Not sure I would get again
This is a slow air fryer. 5 times through on 410 to get zucchini chips.
The bake temp is low according my oven thermometer . Oven says 400 the thermometer say 325.
It cooks fairly evenly. The toast function is great for one slice. 2 gets a little more even.
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Response from Staples :
Hi there, Thank you for taking the time to leave a review. We’re truly sorry to hear about the issues you’re experiencing with your Ninja air fryer needing multiple cycles at 410°F for zucchini chip. Seeing such a large difference between the bake temperature and your oven thermometer must be incredibly frustrating. While we’re glad to hear it cooks fairly evenly and that the toast function works well, we understand these temperature concerns can really impact your experience, and we appreciate you sharing such detailed feedback. We’ll be sure to pass this along to the relevant internal teams. In the meantime, we recommend checking our self‑help troubleshooting guide below, which walks through steps that may help resolve the temperature and cooking issues you’re seeing: https://support.sharkninja.com/article/DT550-Series-Ninja-Prestige-Smart-XL-Air-Fryer-Countertop-Oven-Troubleshooting-Guide?redirect=false If the issue continues after trying those suggestions, please follow the instructions at the end of the guide to reach our support team for further assistance. We’re here to help make things right. Kind regards, Ninja Kitchen.
February 27, 2026
Chief Doughy Are Da`
Reviewed at:
sharkninja.com
Posted Jan 12, 2026
The Next Generation of Home Food Upgrades.
Wow! What a Joy. Are you ready to go from a toaster oven to this.Fast pre heat, great lighting,easy operation. Just a little Cooking Spray and foil ensures years of the most up to date way to safely prepare your favorite meals.
Chief Doughy Are Da` Customer Photo 1
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GrannyD
Reviewed at:
sharkninja.com
Posted Jan 4, 2026
This is the updated version of one I had before, that was damaged in a fire. I am so glad there is still a version of this oven! We use it almost every day. There are so many things I love about it, especially the meat thermometer!
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Jimmy2
Reviewed at:
sharkninja.com
Posted Dec 27, 2025
Unrepairable parts break.
The wires for the control panel are small and crammed into the hinge. Just opening and closing the door fatigue the wires until they break. Mine broke one month out of warranty. Replacement control panel is unavailable for repairs.
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Response from Staples :
Hi Jimmy, Thank you for taking the time to share these details. It’s clear how frustrating it must be to experience wire fatigue and a broken control panel so soon after the warranty period. Your feedback is incredibly valuable. It highlights an area where durability and repair options need improvement. We truly appreciate you bringing this to our attention, and we’ll make sure it’s considered as we work on future designs. Kind Regards, Ninja Kitchen US.
December 27, 2025
ZonkCity
Reviewed at:
sharkninja.com
Posted Dec 26, 2025
Great So Far...
Loved the Foodie Flip but needed a bigger unit! The only negative sonar is that when using the manual setting only allows the user to set it a a maximum of 200°... When cooking Pork Shoulder or Boston Butt, the desired internal temp is 203°-205°
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mcbputter
Reviewed at:
sharkninja.com
Posted Dec 14, 2025
Another awesome ninja product
This is just another awesome ninja product. I’m not even using my regular oven anymore.
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LEGIONxWOLF
Reviewed at:
sharkninja.com
Posted Nov 30, 2025
Wonderful Edition To the Kitchen!!
Fantastic Unit our old one lasted from 2021 until 2025 before giving out. Hope this one last just as long or preferably longer. It has some great features and use it everyday. We got rid of our microwave and went with this type of unit going on 4 years.
LEGIONxWOLF Customer Photo 1
LEGIONxWOLF Customer Photo 2
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Marguerite C
Reviewed at:
sharkninja.com
Posted Nov 19, 2025
I love this
I bought this a couple of weeks ago. I enjoyed air frying chicken thighs. I am still working on the toasting timing and baking timing. So far I really like it.
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Priairiecook
Reviewed at:
sharkninja.com
Posted Nov 1, 2025
Another Fail
Sounds like a bad batch left the factory. I’ve loved it since I first started using it. Super fast pre-heat, and cooking was spot on, the air fry feature was the best I’ve had in a toaster oven. But now looks like I’m also on the train to another product fail. Five months in and the top heating elements stopped working. Takes nearly 10 minutes to heat up skinny lit...
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Response from Staples :
Hello, Thank you for taking the time to leave a review. We're so sorry to hear that your heating elements stopped working, and we're eager to look into this for you. We will absolutely share your feedback with the relevant teams for consideration on future products. We kindly invite you to contact us at 1-800-365-0135, for further assistance. Kind regards, Ninja Kitchen
November 4, 2025
CaraMia
Reviewed at:
sharkninja.com
Posted Oct 29, 2025
Oven this exact one
I have this Ninja Oven
I am not happy about
The inside it is rusting. The lights up top do not work
Really disappointed
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Response from Staples :
Hello there, Thank you for taking the time to leave a review. We're terribly sorry to hear about the issues you're experiencing with your Ninja Oven — that definitely doesn’t sound like the experience we want you to have. Rusting inside the unit and non-functioning lights are concerning, and we completely understand your disappointment. We kindly invite you to reach out to our team via phone at 1-800-365-0135 for further assistance. Our hours of operation are Monday to Friday, 9:00 a.m. to 9:00 p.m. ET, and Saturday from 9:00 a.m. to 6:00 p.m. ET. Kind Regards, Ninja Kitchen
November 8, 2025
Hudds
Reviewed at:
sharkninja.com
Posted Oct 22, 2025
Worked great until…
I am going to be fair and give only 2 stars because the unit was great until it stopped working. Used it for a few months for various food items and it performed well. However, one day recently it just decided to stop turning on. I open the door and it beeps and the interior light turns on but none of the controls on the handle come up anymore.
Hudds Customer Photo 1
Hudds Customer Photo 2
Hudds Customer Photo 3
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Response from Staples :
Hi there, Thank you for taking the time to share your experience. We’re glad to hear the unit performed well initially, but we’re truly disappointed it stopped working after just a few months. That’s definitely not the reliability we aim to deliver. The issue you described where the interior light turns on but the controls don’t respond, sounds like something our team would like to look into further. Please reach out to our Customer Care team at 1-800-365-0135 so we can help troubleshoot and explore options to get you back up and running. We appreciate your honest feedback, it helps us improve and better serve you. Warm regards, Ninja Kitchen US
October 23, 2025
Disappointed #3
Reviewed at:
sharkninja.com
Posted Oct 13, 2025
Does not last part 2 years! Disgusting!
We are on our THIRD Ninja. I am disappointed and disgusted that the Ninja Air Fryer Oven does not last part 1 -1/2 years. The first died without warning. The 2nd one started making noise after it gets hot. Then it suddenly died last week. Unfortunately, I purchased another one but it's still in the box and I'm trying to find an Air fryer oven that will last!
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Response from Staples :
Hi there, Thank you for taking the time to share your experience. We’re truly sorry to hear about the issues you’ve encountered with your Air Fryer Ovens. We understand how frustrating it must be to face repeated problems, especially when you rely on your appliance daily. We’re committed to delivering high-quality, durable products, and it’s disappointing to hear that your experience hasn’t reflected that. Your feedback is incredibly important to us, and we’ve shared your concerns with our product development team for further review. We’d love the opportunity to make this right and learn more about what happened. Please reach out to our Customer Support team at 1-800-365-0135 so we can assist you directly. Thank you again for your feedback, we’re here to help and hope to restore your confidence in Ninja. Warm regards, Ninja Kitchen US
October 16, 2025
Baking Girl
Reviewed at:
sharkninja.com
Posted Sep 27, 2025
Love!!!
Excellent in every way!! So many options and doesn't heat up the kitchen like my regular oven. Living in Florida this is a big plus for me!
Baking Girl Customer Photo 1
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CuriousCat
Reviewed at:
sharkninja.com
Posted Sep 16, 2025
Impressed with product
Wow this oven cooks fast, used probe for chicken done in 30 minutes. Toasts great, bakes quickly. Fans a bit noisy can accept that. Countertop space about 18” x 19” Happy with my choice.
CuriousCat Customer Photo 1
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Zel anne
Reviewed at:
sharkninja.com
Posted Aug 21, 2025
Very functional
I just bought mine, It’s a really good product. Im just a little concern about the sound It is kinda loud for me compare to the other ones I had. Im not sure if that’s normal for this product or its just mine that has a loud sound?
Zel anne Customer Photo 1
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Lorna
Reviewed at:
sharkninja.com
Posted Aug 5, 2025
Great fwatures. Easy to use.
I' m so happy with my new oven/ airfryer ninja. It really works well. Hopefully this one will last long.
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barrgr
Reviewed at:
sharkninja.com
Posted Jul 29, 2025
Smart but the heating elements burn out too soon.
I bought it about 3 months ago and I love its smart features
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Mike
Reviewed at:
sharkninja.com
Posted Jul 1, 2025
Glad to beack to the single door model
Had a single door to start and then got the two door. Big mistake! Glad to be back with the single door. Easy to use and a much better version.
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