“1) the back melted even though it was not particularly close to the wall 2) It died 14 months after we got it - just completely dead - not lights nothing - apparently a common issue”

67% of 83 verified owners recommend the Ninja Foodi DualZone XL AF400, based on real owner verdicts aggregated from Reddit, enthusiast forums, and YouTube.
Affiliate blogs here say 100% recommend, while the owner-based score is 67%. They earn a commission on every sale — so we show them for transparency but never let them move the score.
The headline score reflects owners (Reddit, enthusiast forums), independent lab tests, blogs with no affiliate links, and YouTube owner-comments when they line up with owners. Affiliate blogs is shown for perspective but kept out here — hover the i for why.
Synthesized from what Ninja Foodi DualZone XL AF400 owners say — not a spec sheet.
Retailers' own star averages, for comparison — separate from our vetted owner-verdict score above.
“1) the back melted even though it was not particularly close to the wall 2) It died 14 months after we got it - just completely dead - not lights nothing - apparently a common issue”
“Its been great!”
“I have this Ninja and there is a learning curve.”
“I’m 50/50 on it tho mostly due to the amount of time I keep seeing it takes”
“Bare det faktum at maden er færdig hurtigere og maskinen er 10x nemmere at rengøre gør den alle pengene værd.”
“Theres something on all the insides of the airfryer and I cant for the love of Jesus get it out. I tried cleaning very thoroughly, It just will not come off.”
“There's certainly no upside to the Ninja that I can really think of.”
“Its fresken game changer for me.”
“I loved it. Unfortunately, on the 18th of December, it just shit itself and won't power back up, Ninja has, however, been great, and a new one is on its way.”
“Baskets aren't firm when placed in so I guess it's defective”
“We find that the food does appear to cook and tastes better than just chucking into our oven, and being dual zone means its a bit easier to cook 2 things”
“I´d recommend the AF400, I have it myself and think it´s worth it”
“I actually do use the dehydrator function and it works great”
“the dial frequently doesn't light up so you don't know what your settings are”
“So as you can probably guess, I DO NOT recommend the Ninja.”
“The smart finish works awesome every time for me.”
“I bought one of these and returned it after 1 use. It doesn't actually air fry. It took 3x the time it was supposed to to cook some frozen fries, and they still weren't crispy.”
“Wish it had and easier way to get food out.”
“The left basket has always felt a little snug and didn't "click" in place as smooth as the right one. I can feel heat escaping, which is not the case with the other basket.”
“twenty minutes it’s ready happy days.”
“the difference is stark, it cooks stuff so much faster and crispier, having the two drawers is transformative for being able to fit loads more in, it’s quieter and so far no coating peeling.”
“We have the dual zone. Happy with the cooking, but be gentle - if you bang the baskets around, the handles can crack. Four stars for that; not quite as sturdy as this house with a 5 year old would like.”
“my Ninja af400 is still going strong after 2 years now”
“Bought mine at Costco. Turned it on. Knew it was going back in two seconds. Too loud. Wife is sensitive to noise, it was like a leaf blower.”
Practical notes owners raise — setup, quirks, and issues to watch for. They don't say whether the person likes the product, so they're not counted in the score, but they inform the pros, cons, and who it's for.
“Yes that's true, it's less effective when using both at the same time. You just have to learn to to adjust your cooking times accordingly.”
“I have one. Can't do a full chicken. Maybe 3-4 chicken breast per side”