Which Ninja air fryer fits your kitchen

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Two letters can make Ninja's air fryer line-up look more complicated than it is. The DZ300UK and DZ400UK are essentially the AF300UK and AF400UK in new trim: Ninja describes an updated design for the Dual Zone, rather than a different way of cooking. I'd put the letters aside until you've decided what shape of machine belongs on your worktop.

An air fryer is a small, fast fan oven in a drawer. Ninja offers side-by-side drawers, stacked drawers and a wide drawer with a removable divider, plus the CRISPi glass range. For me, the buying decision comes down to how the space is split, how much food you need to fit and what that food sits in. The electricity saving comes after getting those things right.

How much room does your household need?

A litre figure can't tell you whether dinner will fit. Which?'s buying guide says most air fryers cook around 800g of chips, roughly four to six portions, while the AF400UK accommodates 2.2kg and is recommended for more than four people. That's a more useful starting point than a promise to feed a crowd.

Ideal Home, citing SIA, suggests roughly one portion per litre. I'd treat that as orientation, then ask how much of the meal needs to fit. Ninja's people counts are generous beside the testers' guidance: its 7.6L models variously promise up to six, six to eight, or up to eight people.

Our poll asks how many people your air fryer feeds, and the answers will show the household sizes other readers cook for.

The table gives Ninja's stated capacities, power ratings and serving claims; the last column is the manufacturer's estimate, not a guarantee of complete dinners.

Two drawers side by side

The Dual Zone is where I'd begin for chicken in one drawer and chips in the other. Ninja's SYNC makes different programmes finish together; MATCH copies settings across both drawers. The DZ400UK has 9.5L split between two 4.75L drawers, making it my starting pick for a larger household. Its live shop prices are in this panel.

Prices at UK shops / 1 product

Ninja MAX Dual Zone 9.5L (DZ400UK)

Ninja · 3 shopsNinja DZ400UK Ninja 9 5 litre MAX 6 in 1 Dual Zone Air Fryer Gun Metal

From £159 at Hughes, with delivery

1. HughesIn stock · Lowest price here£159 with deliveryShop at Hughes
2. ElectricshopIn stock£159.99 with deliveryShop at Electricshop
3. Sonic DirectStock at the shop£159.99 with deliveryShop at Sonic Direct

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Prices, stock and delivery as each shop listed them, checked 7 hours ago. Some shops pay us when you buy through these links; that never changes the order. How that works.

The space you surrender is width: Ninja gives the DZ400UK as 41.5cm wide, 27cm deep and 32.5cm high. Its AF400UK counterpart has the same dimensions in Trusted Reviews' review. That reviewer also cautions that a chicken's shape, rather than weight alone, determines whether it fits the fairly narrow drawers.

For smaller dinners, the AF300UK and DZ300UK are the same basic machine in different trim, with 7.6L across two drawers and the same six functions. There is a specification difference: Ninja lists the AF300UK at 2400W and the DZ300UK at 2470W. I'd compare their offers as alternatives for the same job; these cards show both versions.

Stacking the drawers saves width

If that width is the obstacle, the Double Stack changes the arrangement. Ninja lists the SL300UK at 28cm wide, 42cm deep and 38.5cm high, with two 3.8L drawers. I'd favour it for a couple with a narrow but sufficiently deep worktop. This panel covers the smaller Double Stack.

Prices at UK shops / 1 product

Ninja Double Stack 7.6L (SL300UK)

Ninja · 5 shopsNinja Double Stack 2-Drawer Air Fryer with 6 Cooking Functions & 7.6L Capacity for Space-Saving Cooking

From £169.99 at Joybuy, with delivery

1. JoybuyIn stock · Lowest price here£169.99 with deliveryShop at Joybuy
2. ElectricshopIn stock£179.99 with deliveryShop at Electricshop
3. HughesIn stock£179.99 with deliveryShop at Hughes
4. SharkNinjaIn stock£179.99 with deliveryShop at SharkNinja

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Prices, stock and delivery as each shop listed them, checked 7 hours ago. Some shops pay us when you buy through these links; that never changes the order. How that works.

The SL400UK expands capacity to 9.5L and depth to 47cm, keeping the same stated width and height. The XL's included racks give it four cooking levels. I'd pay for that arrangement when width genuinely limits the choice; the XL's panel is below.

Prices at UK shops / 1 product

Ninja Double Stack XL 9.5L (SL400UK)

Ninja · 4 shopsNinja Double Stack XL 9.5L Air Fryer, 2-Drawer Air Fryer - Black, SL400UK

From £269 at Hughes, with delivery

1. HughesIn stock · Lowest price here£269 with deliveryShop at Hughes
2. ElectricshopIn stock£269.99 with deliveryShop at Electricshop
3. SharkNinjaIn stock£269.99 with deliveryShop at SharkNinja
4. Sonic DirectStock at the shop£269.99 with deliveryShop at Sonic Direct

Compare all 4 prices

Prices, stock and delivery as each shop listed them, checked 7 hours ago. Some shops pay us when you buy through these links; that never changes the order. How that works.

Those levels have limits. Expert Reviews found uneven browning in the SL400UK and said loading four layers could overcrowd it and slow cooking. T3's reviewer reported oil and crumbs escaping through the perforated drawer backs during shaking, and racks that could tip and spill food below.

Trusted Reviews found that removing either drawer pauses both. That preserves the shared finishing time, but I'd find it a nuisance if one dish needed frequent turning. Full Of Food's April 2024 comparison puts the SL400UK beside the AF400UK to examine the change in layout.

One wide drawer for bigger food

The FlexDrawer solves a different problem: food that needs uninterrupted space. The AF500UK's removable divider turns separate cooking zones into one 10.4L drawer. I'd choose it for larger roasts rather than simply for its extra litres. This is the FlexDrawer panel.

Prices at UK shops / 1 product

Ninja Foodi FlexDrawer 10.4L (AF500UK)

Ninja · 4 shopsNinja AF500UK Ninja 10 4L Foodi FlexDrawer Dual Zone Air Fryer in Blac

From £209 at Hughes, with delivery

1. HughesIn stock · Lowest price here£209 with deliveryShop at Hughes
2. ElectricshopIn stock£209.99 with deliveryShop at Electricshop
3. JoybuyIn stock£209.99 with deliveryShop at Joybuy
4. Sonic DirectStock at the shop£209.99 with deliveryShop at Sonic Direct

Compare all 4 prices

Prices, stock and delivery as each shop listed them, checked 7 hours ago. Some shops pay us when you buy through these links; that never changes the order. How that works.

Expert Reviews cooked whole chickens up to 3kg, but found heat leaked across the divider and the drawer was too big for most dishwashers. Dishwasher-safe doesn't necessarily mean dishwasher-sized. Trusted Reviews also noted that the entire drawer needs washing even after using only half. For separate small meals, I'd rather have removable individual drawers.

Full Of Food's September 2023 video compares the AF500UK and AF400UK baskets, the distinction at the heart of this choice.

Glass changes the choice again

Glass appeals if you want to avoid a conventional non-stick drawer. I'd treat that as a materials preference, rather than a health guarantee. UKHSA describes evidence on PFAS health impacts as inconsistent; Defra says much evidence remains inconclusive.

On its Irish shop, Ninja says the CRISPi PRO's food-contact surfaces are designed without PFAS and PTFE. That is Ninja's claim. Glass also brings practical compromises: CHOICE's testing found performance on a par with non-glass machines, but heavier containers, visible grease and exterior temperatures above 100°C on tested glass models. Those findings aren't measurements of every CRISPi.

The AS090UK CRISPi PRO gives you a 5.7L bowl or a smaller 2.3L bowl, used separately. Ninja says the larger bowl fits a whole chicken with vegetables. I'd favour it for one substantial dish; its panel follows.

Prices at UK shops / 1 product

Ninja CRISPi PRO XL glass air fryer (AS090UK)

Ninja · 4 shopsNinja CRISPi PRO 5-in-1 XL Glass Air Fryer in White | AS090UKWH | by SharkNinja

From £229 at Hughes, with delivery

1. HughesIn stock · Lowest price here£229 with deliveryShop at Hughes
2. ElectricshopIn stock£229.99 with deliveryShop at Electricshop
3. Sonic DirectStock at the shop£229.99 with deliveryShop at Sonic Direct
4. SharkNinjaIn stock£249.99 with deliveryShop at SharkNinja

Compare all 4 prices

Prices, stock and delivery as each shop listed them, checked 7 hours ago. Some shops pay us when you buy through these links; that never changes the order. How that works.

For different foods finishing together, the DD102UK has two 3.8L glass containers, with Smart Finish and Match Cook. T3's independent review found the containers fitted neatly into the reviewer's dishwasher, while noting visible grease and smears. These are its live offers.

Prices at UK shops / 1 product

Ninja CRISPi DualZone glass air fryer (DD102UK)

Ninja · 2 shopsNinja CRISPi DualZone 8-in-1 Glass Air Fryer in Bone | DD102UKIV2 | by SharkNinja

From £299.99 at Electricshop, with delivery

1. ElectricshopIn stock · Lowest price here£299.99 with deliveryShop at Electricshop
2. SharkNinjaIn stock£299.99 with deliveryShop at SharkNinja

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Prices, stock and delivery as each shop listed them, checked 7 hours ago. Some shops pay us when you buy through these links; that never changes the order. How that works.

The portable FN101UK is a smaller proposition, with a heating pod that fits over glass containers. Ninja supplies 1.4L and 3.8L dishes. Expert Reviews found the small dish restrictive even for one person; Ninja confirmed to the reviewer that Air Fry tops out at 185°C, and there is no temperature selection. The reviewer recommended a roomier or more powerful machine for most people. I'd reserve this one for buyers who value portability; these cards show the three colour options.

Candid Clara's April 2026 video, titled "Ninja Crispi Pro vs Original: Real Cooking Test Results", compares the original CRISPi and Pro side by side.

What dinner costs to cook

The saving depends on replacing an oven cook with a smaller one. Which?'s October 2026 test compared a Morphy Richards Health Fryer with a Bosch electric oven, including preheating. It used 26.32p/kWh, the Ofgem average Direct Debit electricity rate for Great Britain from 1 October to 31 December 2026. These are Which?'s rounded pence per cook, rather than Ninja measurements.

For the Ninjas, Expert Reviews measured 1.070kWh with both SL400UK drawers empty for an hour and 1.208kWh with both AF500UK zones empty at 200°C for an hour. Those empty-hour readings don't tell you the cost of dinner.

Which?'s Ninja listings give annual running costs of £30.49 for the AF300UK, £45.55 for the AF400UK, £40.04 for the SL400UK, £47.96 for the AF500UK, £31.23 for the AS090UK and £21.10 for the FN101UK. The model pages don't state the usage or unit rate behind those annual totals, so I'd use them for context rather than a household forecast.

Which? warns that batches erode the saving: an oven can work out better for a crowd or a full roast dinner. Gas changes the calculation too; Uswitch says a gas oven can cost less to run. An air fryer running alongside your usual oven use can also increase household consumption.

Your model and tariff belong in the running costs calculator. The January 2027 cap is due to be announced by 25 November, according to Uswitch, so the current rate won't settle the calculation indefinitely.

Other brands deserve a place

Ninja doesn't own these layouts. The Cosori Dual Blaze TwinFry has one 10L drawer splitting into two 5L zones and four heating elements. TechAdvisor called it a solid, flexible option. I'd compare it directly with the FlexDrawer if a removable divider appeals; this listing is for the TwinFry.

Several alternatives sit under £150, which is a fair point in their favour. Tower's range includes an 11L stacked model and an 11L flexi-drawer, while Salter's VertiCook Ultra offers 9L stacked across four levels. I'd include them in a budget comparison before deciding the Ninja badge is worth more.

Instant's VersaZone 12L splits into two 6L zones, another route to a wide convertible drawer. Philips offers steam alongside air frying in its 5000 Series Dual Basket, with 6L and 3L drawers; Expert Reviews named it Air Fryer of the Year for 2026.

Tefal is worth attention for stacking: Good Housekeeping's highest-scoring stacked model came from Tefal. Its own shop also lists dual-drawer alternatives under £150. A preference for a layout needn't become loyalty to one maker.

Where I'd compare before buying

Once the layout is settled, the panels show every listed shop's live price. I'd compare SharkNinja's own shopSharkNinjaSharkNinja is a household appliance brand with a UK site selling hair tools, cleaning machines, kitchen appliances and beauty devices. Its range is broad, so the useful starting po8 current offers · View store →, HughesHughesHughes is a family-run electrical retailer from East Anglia that sells across mainland UK online. Its strengths are big white goods, where delivery and installation can be booked i17 current offers · View store →, ElectricshopElectricshopElectricshop is an online retailer of home appliances, televisions, hi-fi, home audio and wireless music systems, stocking a mix of well-known brands. Because the range spans large7 current offers · View store →, Sonic DirectSonic DirectSonic Direct is an online discount retailer focused on home appliances. Its range, as described by the merchant, centres on branded domestic appliances, small kitchen and householdBuying guide · View store → and JoybuyJoybuyJoybuy is the European online retail arm of JD.com, and its UK site brings together a brand-led range spanning technology, appliances, beauty, homeware, groceries and everyday esse10 current offers · View store → for the exact model you've chosen. The wider Ninja range is useful if another code enters the comparison.

I'd also give a crossed-out price less weight than its history. Which? tracks air fryer prices over six months, a better basis for judging an offer than the size of a sale label. Our Black Friday guide covers the timing, and price drops gives you somewhere to watch the model you want. I'd think about the other machines sharing your worktop too. Our guide to stand mixers and bread makers explains which suits the way you bake. The Weekly is our email of deals worth knowing about, sent every Thursday.

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The Ninja I'd choose

I'd begin with the DZ400UK for a larger household and the smaller Dual Zone pair for smaller dinners. A narrow worktop makes the SL300UK worth its compromises; regular large roasts make the FlexDrawer's wide basket worthwhile. If glass matters most, I'd choose the DD102UK for separate dishes or the AS090UK for one larger meal. The right Ninja is the one whose space matches dinner, before the model letters or an electricity-saving claim get a vote.

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