Our Verdict: The Ninja DoubleStack XL Is The Prime Day Air Fryer To Buy
The Ninja DoubleStack XL air fryer is a vertical stacking air fryer with two independent drawers that frees up worktop width while keeping a generous 9.5‑litre family-sized capacity, making it a standout space-saving kitchen appliance for busy homes with limited counter space. For most people, this is the Prime Day air fryer deal to grab. The Amazon‑exclusive black and copper Ninja DoubleStack XL Air Fryer is now £189.99 in the retailer’s Big Prime Deal, down from its stated £269.99 recommended retail price, a 30 per cent saving on the 9.5‑litre model. Another listing places the Ninja DoubleStack XL at £190, down from an average £240, in a Prime Day deals event. In other words, you are looking at roughly an £80 discount and the lowest price in months. If you have been waiting to upgrade to a dual‑zone air fryer that does not dominate your counter, this is the one to buy.
Design: Vertical Stacking That Saves Space, Not Capacity
The DoubleStack XL’s key advantage is its vertical stacking design. Unlike traditional dual‑drawer air fryers, which place the baskets next to each other, this narrower Ninja appliance stacks two independent drawers vertically, freeing up worktop width while retaining a family-sized 9.5-litre capacity. Ninja says this makes it 30 per cent slimmer than the popular AF400 while keeping the same overall 9.5‑litre capacity. The body is around 28cm wide, which is particularly useful in kitchens where worktop width is limited, though you still need to allow for its 47cm depth and 38.5cm height. Real‑world experience backs this up: one owner describes that their kitchen cabinets are mounted so close to the countertop that a coffee machine cannot open underneath, yet the Ninja DoubleStack XL slots perfectly into the gap, looking like it was made for that kitchen. This is exactly what you want from a space‑saving kitchen appliance: narrower, neater, but still capable of feeding a crowd.
Cooking Performance, Functions And Capacity
In everyday use, the Ninja DoubleStack XL air fryer is built for both flexibility and volume. Each of its two drawers has a 4.75-litre capacity and can be controlled independently, with different cooking functions, temperatures and timings for each zone. The Sync setting lines up both parts of the meal to finish together, while the Match function applies identical settings to both drawers when you are preparing a larger quantity of the same food. Two removable racks add an extra cooking level inside each drawer, allowing food to be arranged across four layers, with rear fans circulating hot air so ingredients on upper and lower levels cook and crisp more evenly. Officially, Ninja says the 9.5-litre air fryer can prepare enough food for up to eight people, making it suitable for larger households, entertaining and batch cooking. Owners report that it handles large batches of vegetables, chips, chicken, tofu and more with impressive pace and consistency, becoming a lifesaver for frequent home cooking.
Features, Cleaning And The Black & Copper Prime Day Model
Beyond capacity, the DoubleStack XL covers the main cooking modes you will use week in, week out. The appliance includes six functions: Air Fry, Max Crisp, Roast, Bake, Reheat and Dehydrate. Max Crisp is designed for rapidly cooking frozen food at a higher temperature, while the other settings cover everyday meals, leftovers, baked dishes and dried snacks. In practice, owners lean heavily on the Sync setting to coordinate different foods, and they highlight how convenient it is to put the entire drawer straight into the dishwasher once you are done. The Amazon‑exclusive package also includes two non‑stick crisper plates, two cooking racks and a pair of silicone tongs, with all removable cooking parts listed as dishwasher safe. A notable part of this Prime Day air fryer deal is aesthetics: the model on offer is a black and copper colourway, described as by far the best‑looking DoubleStack XL available, leading at least one existing owner of the standard grey model to wish they had picked this version for its look and functionality.
Buy if / Skip if
- Buy the Ninja DoubleStack XL if your kitchen has limited worktop width and you need a vertical stacking air fryer that frees side-to-side counter space while keeping a 9.5-litre family-sized capacity.
- Buy the Ninja DoubleStack XL if you cook for up to eight people, entertain often or batch cook and want two independent drawers with four total cooking levels to handle complete meals.
- Buy the Ninja DoubleStack XL if you value straightforward cleaning and want dishwasher-safe drawers, crisper plates and racks that can be lifted out and washed after multi-level cooking.
- Buy the Ninja DoubleStack XL if you want to make the most of current Prime Day air fryer deals, with roughly £80 off the Amazon-exclusive black and copper model and the lowest price seen in months.
- Skip the Ninja DoubleStack XL if your kitchen struggles more with appliance height or depth than width, as its 38.5cm height and 47cm depth still demand a fair amount of vertical and front-to-back space.
- Skip the Ninja DoubleStack XL if you rarely cook for more than one or two people and would be happier with a smaller, lighter air fryer that is easier to move in and out of storage than this 10.3kg appliance.
- Skip the Ninja DoubleStack XL if you already own a dual-drawer air fryer that fits your counter and you do not care about switching to the black and copper colourway or gaining the vertical stacking layout.
