Ninja

Smart Dual Heat Air Fry Oven (SP351 Series)

Ninja Smart Dual Heat Air Fry Oven (SP351 Series)

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Overall

#3 in

Air Fryers

according to Reddit Icon Reddit

Sentiment score76% positive
13
2
2

Top Pros

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No summary available.

Last updated: Jun 5, 2026

Reddit Reviews

Reddit Iconaudaciousmonk
6 months ago

toaster over + air fryer combo I really like the ninja sp351, bought it 2-2.5 years ago and it’s holding up well. Toasts, air frys, and the griddle works pretty great to cook in for quick meals / reheating / roasting ingredients while the main over is busy Unless you cook a lot of premade frozen food, that’ll be far more useful than a microwave

Reddit IconKey-Ad-1873
6 months ago

A combo unit, like [13-in-1 Ninja appliance air fries, sears, bakes with 75% less fat than deep frying, fast and versatile healthy cooking](https://a.co/d/gWhBCZL). If you can only have two, I recommend something like this and a microwave. If only one, honestly I think this is more versatile than a microwave and makes better food in general. This is the model my parents have, not sure if there is something else out there more suited to your needs but I've done a lot of different meals in this thing (toasting, reheating, searing, oven, air frying, etc) and to my knowledge it truly does work well at the different cooking types it claims (again have tested/tried everything, just the more normal stuff and have enjoyed using it). The benefit of this particular one is that it has a pivot stand, so you can fold it up out of the way when not in use to reclaim some of your counter space. My dad likes to leave it up and I like to leave it down cuz I constantly have to clear clutter away to fold it down. I've compared making roasted vegetables in the oven and in this machine and I tend to prefer this machine over the oven. Plus if you're cooking for only one or two, the size is about right for it and not too hard to clean (unlike having to try to clean the whole glass stove stop, not hard just a lot more surface area). I don't mean for this to sound like an ad, like I said this is the one I have and I like it. There are likely other versions of this same style (a combo unit designed to be multiple machines in one). Likely a good version of each machine would perform better in its specific category, but a combo unit like this achieves I think 90% of the same result or sometimes better in rare cases, but has the benefit of less room being taken up since it's one machine, and it can be folded up for more counter space. When I get my own place, I am planning to either get myself this one, or look at what is available and try to find something even better if it's an option, and won't worry about other appliances until I actually need them (cuz this does pretty well by itself).

Reddit IconTerpZ
8 months ago

the one that flips up? it's the fucking best. I have a $4000 oven with convection options...use the ninja way more.

Reddit Iconbillythygoat
8 months ago

Cuisinart sucks just fyi, especially the digital air fryer ones. Ninja is good just they don’t seem to have a good size. The tilt one doesn’t have enough clearance to see or even put things like 1-1/2” steaks and the non-flip one is giant.

Reddit IconDocLego
11 months ago

I have the Ninja 12-in-one. I use the regular oven when whatever I’m cooking is too big for the ninja.

Reddit IconlazyFer
11 months ago

Nice, so the humidity difference is a side effect (intentional or not isn't important) is from the orientation. I hadn't realized that. Thanks. I had noticed a difference when I switched to toaster oven shaped air fryer but I liked getting all the counter space back so just deal with it. (I have a ninja low profile air fryer now that is sitting on a stand that allows me to store things underneath, it was a huge countertop space boon)

Reddit IconJust-Catch-955
6 months ago

Look at the Ninja Crispi Pro models that have glassware baskets. They are pretty good. Much easier to clean and you open them up less to check the food because you actually see your food. I have one and like it more than my other model Ninja that is a 9 or 12-in1 thing

Reddit Iconishouldquitsmoking
11 months ago

I have the ninja smartXL and it replaces just about everything I do in the oven except bake bread. Only because I bake a few loaves at a time. I would 100% go for it. Less heat in the house too.

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