Updated 26 August 2026. A good air fryer should suit the food you cook, the number of people you feed and the space on your worktop. This guide compares six large-capacity models sold in the UK, including dual-drawer and oven-style designs, so you can see where each one works well and where it falls short.
Editorial note: These models were not all tested side by side in a single lab session. Our recommendations are based on published specifications, current retailer availability, our linked in-depth reviews and recurring owner feedback. We have removed fixed prices and review counts because both change frequently.
Affiliate disclosure: Some links below are affiliate links. Trusted Products may earn a commission if you buy through them, at no extra cost to you. This does not affect which products we include or the drawbacks we report.
| Model | Type | Stated capacity | Standout feature | Main drawback | Current price |
|---|---|---|---|---|---|
| Ninja AF400UK | Dual drawer | 9.5L total | Strong controls and two independent 4.75L zones | Large footprint and no viewing windows | Check price |
| COSORI Dual Basket | Dual drawer | 8.5L total | Viewing windows and a wide 35–230°C range | Wide body needs generous worktop space | Check price |
| Cookwise Dual | Dual drawer | 9L total | Two windows and nine presets | Less established support network | Check price |
| Tower T17039 | Air-fryer oven | 11L | Rotisserie and shelves for layered cooking | More parts to clean than a drawer model | Check price |
| Tower T17088 | Dual drawer | 9L total | Sync function for two foods | No viewing windows | Check price |
| Tower T17100 | Dual drawer | 9L total | Viewing windows and ten presets | High stated maximum power draw | Check price |
We prioritised the details that make the biggest difference in everyday use: basket layout, usable capacity, temperature control, cleaning, worktop space, warranty or support, and whether the controls make two-part meals easier. We cross-checked specifications against manufacturer information where available and removed old prices, star ratings and review totals.
This is a researched buying guide, not a claim that all six machines completed an identical test programme. Where Trusted Products has a longer review, we link it beneath the relevant model. Retailer links are provided to check the exact model code, current price, stock and warranty terms before ordering.
A compact 4–6L basket can be enough for one or two people, while families often find 8–10L dual-zone models more flexible. However, the shape of each basket matters as much as the total litre figure. A wide single basket may fit a whole chicken more easily; two narrower baskets are better when foods need different times or temperatures. Avoid relying on vague “serves six” claims without checking basket dimensions and the food you normally cook.
Large air fryers are deep as well as wide. Leave ventilation space around the appliance, make sure the drawers can open without hitting a wall, and check that a cupboard above will not trap hot air. Also consider where the machine will live: an appliance that must be lifted out of a cupboard for every meal is less convenient than one that can remain safely on the counter.
Removable, dishwasher-safe baskets are useful, although hand-washing non-stick parts can help preserve their coating. Look for a clear way to change time and temperature, not just a long list of presets. On a dual model, a sync-finish function is more useful than two baskets alone because it can delay one zone so both foods finish together.
Best for: households wanting a polished, flexible dual-zone air fryer for larger meals.
The Ninja AF400UK has a stated 9.5L total capacity split across two independent 4.75L drawers. Each zone can run at a different time and temperature, while Sync mode coordinates the finish. Six cooking functions cover Max Crisp, Air Fry, Roast, Bake, Reheat and Dehydrate. The removable drawers and crisper plates are listed as dishwasher-safe, and Ninja offers a two-year guarantee when the product is registered.
Its main strength is versatility: you can cook a main and side separately or use both drawers for a larger batch. The compromise is size. It occupies a substantial area of worktop, the drawers are narrower than one equivalent single basket, and there are no windows for checking browning without opening them.
Pros: dependable dual-zone controls; large total capacity; strong accessory and support ecosystem.
Cons: bulky; no viewing windows; two separate drawers cannot accommodate one very wide item.
Read our full Ninja AF400UK review or check the current price.
Best for: cooks who want two zones and a clear view of food as it browns.
COSORI splits its 8.5L capacity into two 4.25L baskets. Windows and internal lights make it easier to check progress without repeatedly opening a drawer. The official specification lists a 35–230°C temperature range, 1,750W rated power and eight functions, including Air Fry, Roast, Bake, Reheat, Grill, Dry, SyncCook and SyncFinish.
The wide temperature range gives this model more flexibility than a basic air fryer, and dishwasher-safe removable parts help after cooking. Its two smaller zones are useful for separate dishes, but neither has the uninterrupted width of a large single basket. The body is also broad, so measure the counter and drawer-opening clearance carefully.
Pros: easy visual monitoring; broad temperature range; useful zone-matching and finish-sync controls.
Cons: needs plenty of worktop width; each basket is smaller than a comparable single drawer.
Read our full COSORI Dual Basket review or check the current price.
Best for: value-focused shoppers who want two drawers and windows.
This Cookwise model combines a stated 9L total capacity with two independent drawers, viewing windows and nine presets. The listing describes a temperature range up to 200°C and dishwasher-safe removable parts. Its layout should suit a typical main-and-side meal, while the windows reduce the need to interrupt cooking just to check colour.
The trade-off is brand support. Cookwise has a less established service and accessory network than Ninja, COSORI or Tower, and the exact model code is not prominent in the retailer URL. Check the model label, included accessories, warranty provider and returns terms on the live listing before buying. That is especially important if a low price is the main attraction.
Pros: useful dual-drawer layout; windows; potentially strong value.
Cons: less established support network; specification and warranty details should be checked carefully.
Read our full Cookwise 9L review or check the current price.
Best for: people who prefer shelves, a window and rotisserie-style cooking to drawers.
The T17039 is an 11L oven-style air fryer rather than a compact basket model. Its 2,000W stated power, removable shelves, viewing window and rotisserie accessory make it the most distinctive option here. It can be a practical choice for foods that benefit from a flatter cooking surface or for households that will genuinely use the rotisserie and layered trays.
Oven-style air fryers behave differently from drawers. Airflow can vary between shelf positions, so trays may need swapping or food turning for even colour. There are also more components to wash, and the rotisserie capacity is more limited than the headline 11L figure might suggest. Buy it for its format and accessories, not because it is “compact”.
Pros: visible cooking; versatile tray layout; rotisserie option.
Cons: more parts to clean; shelves can cook unevenly without rotation; not a small appliance.
Read our full Tower T17039 review or check the current price.
Best for: shoppers wanting a straightforward 9L Tower dual-basket model.
The T17088 has a stated 9L capacity divided between two independently controlled baskets and a stated maximum power of 2,600W. Its Smart Finish feature is a timing function: it coordinates two zones so different foods finish together. It is not app-connected or remotely controlled, so “smart” should not be confused with Wi-Fi features.
This is the simpler of the two Tower dual-basket choices in this guide. It makes sense if the live price is attractive and windows are not important. If you often cook by sight, compare it directly with the T17100 below. Also check the listing for the current accessory pack, cleaning instructions and guarantee terms, as retailer bundles can change.
Pros: flexible two-zone cooking; simple comparison point against Tower's windowed model.
Cons: no windows; Smart Finish is timing synchronisation, not connected functionality.
Read our full Tower T17088 review or check the current price.
Best for: Tower buyers who want to monitor two baskets without opening them.
The T17100 uses the same broad dual-zone idea as the T17088 but adds viewing windows. It has a stated 9L total capacity, 2,600W maximum power and ten one-touch presets. For foods where colour is a useful guide—such as chips, pastries or breaded items—the windows can make the T17100 more convenient than an otherwise similar closed-drawer design.
Presets are starting points, not guarantees: portion size, food temperature and basket loading still affect cooking time. The high maximum wattage also does not mean the appliance draws that amount continuously, but it is worth checking the circuit and avoiding overloaded extension leads. Compare the current price with the T17088 and choose the windows only if you will use them.
Pros: easy progress checks; flexible dual-zone layout; simple preset access.
Cons: large appliance; headline presets do not replace checking food; similar core purpose to the cheaper T17088.
Check the current price and exact specification.
If you mainly cook for one or two people, all six may be larger than necessary. A simpler 4–6L model could cost less, occupy less space and still cover everyday portions.
An air fryer can use less energy than heating a full-size oven for a small or medium batch because its cooking chamber is smaller and often reaches temperature faster. It is not automatically the cheapest option for every meal. A high-powered dual-zone model running both baskets for a long time may use more electricity than a small air fryer, and a conventional oven can be efficient when cooking several large dishes together.
For a realistic comparison, multiply the appliance's measured kilowatt-hours by your electricity unit rate. A plug-in energy monitor gives a better result than multiplying the maximum wattage by the full cooking time because thermostats cycle on and off.
Place any air fryer on a stable, heat-resistant surface with the clearance specified in its manual. Do not block vents, overfill baskets, use a damaged cable or run a high-power appliance through an overloaded extension lead. Clean grease from baskets and heating areas once the appliance has cooled.
Tower announced a recall affecting specific air fryer model numbers in 2025. The T17039, T17088 and T17100 discussed here were not among the model numbers listed in the UK government notice when we checked on 26 August 2026. Recalls can be updated, so Tower owners should still compare the model number on the appliance label with the latest Office for Product Safety and Standards recall notice.
A 4–6L single basket is often enough for one or two people, depending on the foods you cook. Larger dual-drawer models are worthwhile if you batch-cook or regularly prepare a main and side at different settings.
It is more flexible, not automatically better. Two zones help with different foods and timings, while one wide basket can fit larger individual items and is usually easier to clean.
Air frying can use much less added oil than deep frying, but the nutritional result still depends on the ingredients, portion size and any oil, salt or coatings you add. An air fryer does not make every processed food healthy.
Follow the recipe and appliance manual. Some foods crisp more consistently after a short preheat, while many everyday dishes can start in a cold basket. Avoid overcrowding and shake or turn food when the instructions recommend it.
Some can, but the answer is model-specific. Check the current manual before washing. Even when parts are dishwasher-safe, gentle hand-washing may extend the life of a non-stick coating.
Retail prices, discounts and stock change too quickly for a fixed figure to stay useful. The retailer buttons show the current offer; compare it with the manufacturer's site and other reputable shops before buying.
For a large dual-zone air fryer, the Ninja AF400UK is the most rounded choice in this group. The COSORI 8.5L is the more appealing alternative if viewing windows and temperature range are priorities. Tower's T17039 serves a different buyer who wants an oven-style format, while the Cookwise and two Tower dual-basket models should be judged carefully on live price, warranty and the features you will actually use.
Whichever model you choose, check the exact model number, external dimensions, included accessories and current guarantee before ordering. Those details matter more than a long preset list or an inflated serving claim.