The Ninja MAX 6‑in‑1 Dual Zone DZ400UK is a large-capacity air fryer designed to handle family meals with ease. With two independent baskets totalling 9.5 litres, it lets you cook different foods at the same time without juggling oven shelves.
Ninja is well established in the UK for reliable, user-friendly kitchen kit, and this model follows that pattern. With powerful 2470W heating and six cooking functions, it aims to replace or at least heavily supplement your main oven.
A user rating of 4.9 out of 5 from thousands of reviews suggests owners are overwhelmingly happy with it, praising both speed and results. It sits towards the premium end of air fryers, but the feature set is more advanced than most single-drawer rivals.
The DZ400UK is ideal for families, house shares and anyone who regularly cooks for three or more people. The 9.5‑litre capacity and two baskets make it easy to prepare a full meal in one go – think chicken in one drawer, chips or veg in the other.
It suits buyers looking for a step up from a basic, single-drawer air fryer. If you want more flexibility, faster turnaround and the ability to cook mains and sides at once, this dual zone design makes everyday dinners noticeably simpler.
With a mid-to-premium price tag, it’s best for those prepared to invest a bit more in a versatile workhorse rather than a bargain first-time gadget. That said, its straightforward controls and automatic cooking programmes mean it’s still very approachable for air fryer beginners.
If you live alone and mainly cook small portions, you may find the size and capacity excessive. But for busy households trying to cut down on oven use and oil, this is a very strong option.
The standout advantage is the generous 9.5‑litre capacity split across two baskets. You can cook two different ingredients simultaneously, which is far more efficient than batch cooking in a single drawer or heating a full-size oven.
Powerful 2470W heating means quick preheats and fast cooking times, so weeknight meals can be on the table much sooner. The six built-in programmes and adjustable thermostat take a lot of guesswork out of getting food crisp on the outside and tender inside.
Non-stick drawers and crisper plates, along with dishwasher-safe components, make clean-up refreshingly simple – a big plus when you use an appliance several times a week. The compact footprint for the capacity, non-slip feet and included recipe guide round things off nicely for everyday convenience.
The extremely strong owner rating (4.9 from thousands of reviews) gives extra confidence that reliability and results live up to the spec sheet.
For a countertop appliance, the DZ400UK is physically quite large, so it will dominate smaller kitchens and may need to live out on the worktop rather than in a cupboard.
There’s no dedicated keep-warm function, which some rivals now include, so timing is a bit less forgiving if people are eating at slightly different times. The 0.8m power cord is also on the short side, limiting where you can position it without an extension.
The one-year manufacturer warranty is fairly standard but not overly generous for a premium-leaning product. Finally, while the six programmes cover most everyday needs, there’s no steam function or grilling option, so it won’t completely replace all oven or hob cooking.
On the worktop, the DZ400UK feels like a solid, well-built appliance. At 32.5cm high, 41.5cm wide and 27cm deep, it needs a decent chunk of space, but the rectangular shape makes it easier to tuck against a wall than some bulkier designs.
The two drawers slide in and out smoothly, and the non-stick finish means food releases easily without scraping. Crisper plates lift out for cleaning, and because the main components are dishwasher safe, you can simply rinse off any loose crumbs and let the machine do the rest.
Controls are straightforward, with clearly marked programmes and adjustable time and temperature. Once you’ve used it a couple of times, setting up a cook becomes second nature. The built-in timer means you can set and forget until it beeps, without hovering over it like a frying pan.
In day-to-day use, the biggest benefit is being able to cook two components of a meal separately but simultaneously. It reduces faff, cuts down on washing up compared with multiple trays in the oven, and encourages you to use it for more than just chips and nuggets.
With a 2470W heating element, the Ninja MAX DZ400UK gets up to cooking temperature quickly and maintains heat well, which is key for achieving that crisp finish air fryers are known for. The 9.5‑litre capacity is among the more generous offerings, so it can comfortably handle family portions of chicken, fish, veg or frozen favourites.
Six automatic programmes and six power levels cover common cooking methods like air frying, baking and roasting. These presets help you get reliable results without constantly tweaking time and temperature, while the adjustable thermostat lets more confident cooks fine-tune for specific recipes.
The dual basket layout is the defining feature. It allows two different foods to be cooked at once, each with its own settings, so you’re not forced to choose between undercooking one or overcooking the other. It’s especially handy for pairing proteins with sides, or separating foods for dietary preferences.
Non-stick, removable drawers and crisper plates, plus dishwasher-safe components, keep maintenance simple. Features like non-slip feet and the included recipe guide make it easier to integrate into your routine, encouraging you to experiment beyond basic frozen foods.
While it doesn’t offer extras like steaming or grilling, the core functions it does include are well executed and cover the majority of oven-style cooking tasks many households rely on.
At its current price, the Ninja DZ400UK sits in the mid-to-upper range of air fryers, but you’re paying for significantly more versatility than a standard single-drawer model. The dual zone design, large capacity and strong build quality justify the premium for busy households.
Running costs are generally lower than using a full-sized oven for equivalent portions, thanks to faster preheat times and more focused cooking. Over time, frequent users are likely to recoup some of the upfront cost through reduced energy use.
The extremely high user rating, backed by a large number of reviews, suggests real-world performance and reliability are strong, which adds to its value proposition. The one-year warranty is a touch conservative, but overall the mix of speed, flexibility and ease of use makes this feel like a sound investment if you’ll use it several times a week.
If you only cook small portions or won’t take advantage of the dual baskets, you may be better off with a cheaper, more compact model. For families and keen home cooks, however, it offers very good value for what it can replace in the kitchen.
The Ninja MAX 6‑in‑1 Dual Zone DZ400UK is a powerful, family-friendly air fryer that genuinely earns its space on the worktop. The combination of a large 9.5‑litre capacity, two independent baskets and simple, reliable cooking programmes makes it far more than a chips-only gadget.
Its few drawbacks – a large footprint, short-ish power cord and basic one-year warranty – are worth noting but unlikely to be deal-breakers for most households. What stands out is how much it streamlines midweek cooking, helping you serve mains and sides together with less effort and energy.
If you’re serious about using an air fryer as a core part of your cooking routine rather than an occasional extra, this Ninja is one of the most compelling options around. Families, busy couples and anyone looking to cut down on oven use should put it high on their shortlist.
