16% of 83 verified Ninja Foodi DualZone XL AF400owners don't recommend it, and 2 describe specific problems — based on real owner comments from Reddit, enthusiast forums, and YouTube.
For balance: 67% recommend it. This page collects the complaints so you know what you're signing up for — read the full owner report for both sides. How we score
“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”— repomonkey on Reddit
“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.”— Aleksandra- on Reddit
“There's certainly no upside to the Ninja that I can really think of.”— nickdaniels92 on Reddit
“Baskets aren't firm when placed in so I guess it's defective”— iAnkou on Reddit
“So as you can probably guess, I DO NOT recommend the Ninja.”— barnau21 on Reddit
“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.”— throckmeisterz on r/airfryer
“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.”— llamacub on r/airfryer
“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.”— Bitter-Basket on r/airfryer
“True if you’re in North America (I have a dualzone and was terribly disappointed although i love my Ninja Foodi).”— Mygirlscats on r/airfryer
“This was my first and last Air fryer, I had it for 15 days and I did not like it, may be this is just me.”— Rinuom on RedFlagDeals Forums
“I used it on my own Ninja Foodi and it ruined it so bad I had to buy a new one.”— internetfairy_x on r/airfryer
“These air fryers weren’t designed to be cleaned fyi.”— Jibberfish69 on r/airfryer
Not complaints — practical notes from owners that didn't affect the score.
“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.”— PeregrinsFolly on r/airfryer
“I have one. Can't do a full chicken. Maybe 3-4 chicken breast per side”— Cptn_Canada on r/airfryer