Ninja

Smart Dual Heat Air Fry Oven (SP351 Series)

Ninja Smart Dual Heat Air Fry Oven (SP351 Series)

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Overall

#1 in

Air Fryers

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Sentiment score75% positive
6
1
1

Top Pros

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Last updated: Apr 26, 2026

Reddit Reviews

Reddit Iconaudaciousmonk
5 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
5 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 Iconaprilbeingsocial
11 months ago

We purchased a Ninja Combi oven and we are in love with it. It saves so much time and energy. It has ceramic coated pans so no toxic coverings.

Reddit IconJayRoo83
9 months ago

If you’re stressed for space and have the budget, I’d recommend the Ninja Combi oven so you get a multi-use tool out of the space used I use mine for air frying, normal baking and making breads and what not all the time because it keeps the house cooler than kicking up the oven itself

Reddit IconQuiet_Fan_7008
5 months ago

Ninja combi is the best thing ever. People need to get away from air fryers and get into combi oven. Even as one person. You can make full blown meals in 15 minutes. Perfect for meal prepping. Also for air fyers, I hate the hard to clean grate things that all air fryers have, the combi has a pan and I just throw everything in there and can easily air fry. It’s really the best thing I’ve ever owned.

Reddit IconAdorable_Tour_8849
11 months ago

I have had a ninja duel for 2 1/2 years and still working great

Reddit IconImaginaryCatDreams
9 months ago

I'm not a big fan of the ones that seem to be the most popular. You should buy the largest one you can afford and have counter space for. It's really a convection oven and if you have the room you could cook a chicken I have the Ninja dual oven where the bottom is an air fryer in the top is a toaster oven, I don't use it everyday, I use it several times a day I also received as a gift one of those that has the three stackable trays. It's okay but you have to rearrange the trays from time to time if you're cooking something that takes a while. And yes I do use both

Reddit Iconthrowingutah
4 months ago

I've got the Ninja dual oven with the little bitty top door you can open separately. I like it a lot.

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