Customer Media
Highlights
| Integrated Pro Cook System | Achieve the perfect level of doneness from rare to well-done at the touch of a button using the integrated thermometer and Auto Temp Detect Intelligence, eliminating the need for guesswork. |
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| Smart Surround Convection | Features a high-velocity fan and rear heat source that provides up to 10x the convection power of a traditional built-in oven, delivering an all-around crisp without the need to flip or rotate food. |
| 10-in-1 Versatile Functionality | A multi-purpose kitchen powerhouse with 10 specialized cooking programs: Air Fry, Whole Roast, Air Roast, Bake, Dehydrate, Pizza, Broil, Toast, Bagel, and Reheat. |
| XL Family-Sized Capacity | The extra-large interior accommodates two 9×9 baking trays, a 12 lb. turkey, or up to 9 slices of toast simultaneously, making it ideal for large family meals and entertaining. |
| Rapid Preheat and Cooking | Saves time in the kitchen with a lightning-fast 90-second oven preheat and cooking speeds up to 30% faster than a standard full-size convection oven. |
Pros & Cons
Pros
- Exceptional Versatility and Performance: The 10-in-1 functionality allows users to air fry, bake, roast, and dehydrate with consistent results, often making traditional ovens obsolete. It features a large interior capacity that can accommodate whole chickens, 13-inch pizzas, or multiple trays of food simultaneously.
- Rapid Preheat and Cooking Speed: The unit features an incredibly fast preheat time of approximately 90 seconds, which is significantly faster than standard full-sized ovens. This efficiency allows users to start cooking almost immediately and reduces overall meal preparation time.
- Integrated Smart Thermometer: The Pro Cook System includes a built-in thermometer probe that monitors internal food temperature and automatically shuts off the unit when the target doneness is reached. This feature eliminates guesswork and ensures meats are cooked perfectly and remain juicy.
Cons
- High Noise and Vibration Levels: A frequent complaint is the excessive noise generated by the convection fan, which some users compare to a jet engine or an airplane. Additionally, several reviewers reported distracting metallic rattling or vibrations during operation.
- Large Countertop Footprint: The unit is quite bulky and deep, requiring substantial counter space and clearance from walls due to its rear-venting design. Its size may be problematic for smaller kitchens or standard-depth countertops.
- Challenging to Clean: Maintaining the interior is difficult because grease and food splatters can easily reach the exposed heating elements and the back fan. Users noted that baked-on residue is hard to remove and the crumb tray can be tricky to empty without spilling.
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Customer Reviews
Showing reviews 131-140 of 363
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It's loud.. I mean LOUD!! 😢
Vicki O'Meara July 14, 2025Review source: AmazonJust rec’d my oven. Don’t care that it’s an AirFryer/Toaster Oven, as I prefer my stand alone appliances forthat. Just purchased to bake and roast in. I had purchased a VillaWare convection oven over 10 years ago and it was just recently losing it’s temp hold and not baking breads, etc., as should. And though it didn’t have all the bells and whistles as this oven, I love it. It was quiet. I mean seriously quiet. I at times f forgot it was running until the timer beep to alert me.
I started this Ninja up today to burn off the chemical smell (which was HORRID) and I still feel it in my lungs, but I was unpleased with how stinking loud this oven is. I get it having sound if running the Airfry/AirRoast, but just to bake? My previous countertop oven had the option to bake without the fan, just using the heating elements. I don’t like the Airplane loudness. Very displeasing.
Wonder how many people rec’d a free oven for their high praise on the “QUIETNESS” reviews.
I will update more after I’ve had the chance to test it out further with baking and/or roasting meat! -
Great
Verified purchase Verified purchase: This reviewer bought the product.Miscreview July 13, 2025Review source: BestbuyWorks great no issues with item would buy again!!!
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Stopped working the first week
Verified purchase Verified purchase: This reviewer bought the product.CherylD July 11, 2025Review source: BestbuySeemed nice, but…controls malfunctioned after about ten uses. Fortunately it happened before the Best Buy return window closed.
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Countertop Oven – Ninja
Verified purchase Verified purchase: This reviewer bought the product.FranklinS July 11, 2025Review source: BestbuyExcellent product. Just as described, it does everything you want. Highly recommended to help out in the cooking process of your favorite foods.
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Hooray. I love ninja products!
Verified purchase Verified purchase: This reviewer bought the product.thereseqq July 9, 2025Review source: AmazonI’ve got it all set. Gonna make air fried potato and shrimp. Yum. Happy anniversary to us.
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Perfect
Verified purchase Verified purchase: This reviewer bought the product.DTND July 8, 2025Review source: BestbuyLove it. I have the smaller Ninja and wanted one a bit larger and this Ninja is perfect. A little loud but not enough to take away the 5 stars.
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THE G.O.A.T.
Verified purchase Verified purchase: This reviewer bought the product.Dude July 5, 2025Review source: BestbuyPerfect size… fits perfecin my small space …easy instructions.. love the confection oven…will HIGHLY RECOMMEND this oven
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Solid Replacement for our failed Cuisinart
Verified purchase Verified purchase: This reviewer bought the product.TAB44 July 5, 2025Review source: BestbuyOur Cuisinart failed us after several years of regular use and we were looking for options with digital temperature control rather than the knobs.
We did our research and liked what we saw with the Ninja. Some reviews mentioned it being loud and it is louder than our previous model. However, I really like the guidance on where to place the pans as it is clear that we weren’t putting the trays in the right location on our previous oven
So far so good with this oven as instructions have us modifying or habits to use the broiler type tray rather than the wire mesh screen with drop tray. We have also made use of the temperature probe already to make some sirloin steaks.
We have absolutely no complaints so far, as we really like this oven.
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Great product just noisy.
Verified purchase Verified purchase: This reviewer bought the product.LAW3 July 4, 2025Review source: BestbuyThis product overall is great. It cooks everything to perfection. The only issue i have is how loud it is but other than that its great.
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Mostly non toxic materials
Robin Butler July 4, 2025Review source: AmazonI contacted Ninja and asked what materials the DT551 is made of.
– interior sides, – stainless steel
– exterior body- Stainless steel
– Air Fry Basket- aluminum non stick ceramic coating ppfe pfoa free
– Sheet Pans: enamel
– Wire Racks- stainless steel
– Removeable Crumb Tray- stainless steels
– Roast Tray – stainless steel(See Mamavation’s toaster oven article for replacements for some of the accessories and it’s a non toxic oven!)