The Ninja AF140UK is the Pro upgrade to the bestselling AF100UK, offering a larger 4.7L basket, more power, and a refined design. It retains the four core functions – Air Fry, Roast, Reheat, and Dehydrate – but delivers better airflow, more capacity, and enhanced crisping. If you regularly cook for two or three people, or just want more space to batch cook, the AF140UK gives you room to grow without stepping up to Ninja’s bulkier dual-zone fryers.
With a slightly taller and wider build than the AF100UK, the AF140UK is built to be functional yet sleek. Its modern matte black finish, crisp digital interface, and rubberised feet make it feel premium and sturdy. The handle remains cool to touch during cooking, and the drawer glides in smoothly. Despite its increased size, it doesn’t dominate the countertop, making it a great upgrade for mid-sized kitchens.
The 4.7L basket gives you around 25% more space than the AF100UK – enough for larger meal portions or family-style side dishes. Its overall footprint is approximately 36.5 x 28 x 33 cm. You can easily fit 6 chicken thighs, a tray of roast potatoes, or a whole spatchcocked chicken inside the basket with room for air circulation.
The extra wattage in the AF140UK makes a noticeable difference. It preheats quickly, cooks faster, and crisps more aggressively than lower-wattage fryers. Fries and onion rings come out golden and crunchy. Chicken wings are crispy on the outside and juicy inside. Even delicate items like salmon fillets stay moist while developing a nice crust. Thanks to better airflow, the need for flipping or shaking is reduced. The Roast and Reheat functions are also solid, particularly for pizza, roasted veg, and day-old chips.
The extra wattage in the AF140UK makes a noticeable difference. It preheats quickly, cooks faster, and crisps more aggressively than lower-wattage fryers. Fries and onion rings come out golden and crunchy. Chicken wings are crispy on the outside and juicy inside. Even delicate items like salmon fillets stay moist while developing a nice crust. Thanks to better airflow, the need for flipping or shaking is reduced. The Roast and Reheat functions are also solid, particularly for pizza, roasted veg, and day-old chips.
The non-stick coating on the basket and crisper plate holds up well with frequent use. For everyday cleaning, warm soapy water and a soft cloth are enough. The parts are also dishwasher-safe, making it easy to clean up after larger or greasier meals. Avoid metal tools or abrasive pads to preserve the surface finish.
The Ninja AF140UK is available online via Ninja Kitchen UK, Amazon, Argos, and Currys. Retail price is usually around £129–£149, but frequent sales bring it closer to £99 at key retail events like Prime Day or Black Friday.
Compared to the AF100UK, the AF140UK offers more capacity, better airflow, and quicker cooking. It’s the ideal ‘next step’ before moving to dual-zone models like the AF300UK. While it lacks the SyncFinish or Smart Cook sensors found in Ninja’s high-end lineup, it provides excellent everyday performance without adding complexity or cost.
If you want a single-basket air fryer with enough space and power for daily cooking, the AF140UK is one of the best options available in the UK right now. It’s simple, fast, and consistent – ideal for people who want high performance without the fuss. For under £150, it delivers excellent value and versatility.
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Yes – it has a larger capacity, stronger fan, and faster cooking performance.
No – it’s a single-drawer air fryer. If you want dual-zone, look at the AF300UK or AF400UK.
Yes, the Roast mode works well for baked goods like brownies or small cakes.
Yes, both the basket and the crisper plate can go in the dishwasher.
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