Ninja’s 3 new Double Stack air fryers compared

Ninja’s 9.5L/10QT Double Stack XL (called the DoubleStack XL in the US) is the brand’s newest and most innovative air fryer, cramming four zones of cooking space into a compact form that won’t overwhelm a smaller kitchen counter.

Or, at least, it was the newest until Ninja announced three new Double Stack models. All three models are now available to buy in the UK – but only two have made it to the US.

We first saw them when the brand unveiled them at IFA. You can compare the latest models to the best currently available Ninja air fryers and cookers in our round-up, and browse all our favourite products from IFA in our IFA awards article.

The Double Stack SL300 (UK) / SL201 (US)

At 7.6L/8QT, this is even more compact than the original 9.5L/10QT model. It has a very similar design and the same height and width as the original (38.5cm x 28cm) but it’s only 42cm, rather than 47cm deep (11.25 in L x 17.79 in W x 15.14 in H).

We rate the original DoubleStack highly, but when we tested it (see our review), we did find that its depth means that it protrudes beyond other appliances on the counter – meaning that it’s not a perfect solution for every kitchen.

That shouldn’t be a problem with the new compact model.

Each cooking drawer has a 3.8L/4QT capacity and it has the same functionality as the earlier model, meaning you can use two different cooking methods simultaneously, but switch on the sync function and have them finish at the same time. It also has the same six cooking methods: air fry, max crisp, roast, bake, dehydrate, reheat.

Ninja reckons it can still hold enough food to feed six people. We think that’s slightly optimistic but with two cooking areas per basket, it’s certainly maximising its space. Each drawer can cook 400g of fries, or a 1.2kg roast chicken.

It’s available in black, instead of the original’s dark grey, and we love this little model. It’s now available from Ninja in the UK for £229.99 and from Ninja in the US for $199.99.

The Double Stack XL with Smart Cook system

Ninja also had the SL451 on display. This is another new DoubleStack XL model. It looks very much like the original, with a 9.5L/10QT capacity – except that it comes with a cooking probe. What this means is that it’s a better option for cooking fresh meat and fish and getting perfect results, rather than cooking frozen food, where it’s a simple matter of following the instructions on the packaging.

It has the same six cooking functions as its predecessor: air fry, max crisp, roast, bake, reheat, and dehydrate.

This model is now available to buy. It’s priced at £289.99 from Ninja UK and $249.99 from Ninja US.

Special edition white Double Stack XL

The third model Ninja unveiled is exactly the same as the original 9.5-litre Double Stack, except that it’s white. You can only buy it from Currys in the UK from today. It’s also priced at £269.99. We don’t know if it will also be available in the US.

While we think that the white model looks good on display, and won’t visually overwhelm your counter the same way a black or grey air fryer will, it’ll obviously require a bit more work to keep it looking good once it’s installed in your kitchen. Grey and black appliances do a good job of hiding the odd fleck of sauce or oil from your hob but a white appliance will show up every stray blob.

Read our review of the Double Stack XL to find out what we thought of the original, or you see how it compares to other Ninja models in our round-up of the best Ninja air fryers and countertop cookers.

We’ve also got recommendations for the best air fryer oven, the best dual-drawer air fryer and the best air fryer of all brands and types.