How to choose an air fryer
Start with the meal you want to cook. Then choose the basket layout and space it needs, instead of buying by the largest litre number.
Picture a normal dinner
Write down two or three meals you make regularly. For each one, note what needs to cook together and whether the foods need different settings. A single dish, a main with a separate side, and a large item are three different jobs.
Think about how often you would really use extra compartments. A larger machine is only useful if its layout fits your meals and your kitchen. Our finder compares selected models from Ninja, Tower and Russell Hobbs. We compare published features and layouts, rather than claiming to have tested every air fryer on sale.
Choose the drawer layout
Look inside the litre number
The DualZone XL DZ950UK is described as 9.5 litres in total, split between two 4.75-litre baskets. A food item must fit the individual cooking space, not the combined figure. Its sync function coordinates finishing times for the two drawers; you still need suitable settings for each food.
Before choosing, compare the basket’s usable shape with your normal portions and the dishes you use. Follow the loading instructions. A manufacturer’s serving estimate is a starting point, not a guarantee that every family meal will fit.
Measure it with the drawers open
Start with the product dimensions, then check the manual for required clearances and placement. Allow room to pull out a drawer and somewhere suitable to handle it. A machine that fits when shut may be awkward in the position where you actually cook.
The Double Stack SL451UK puts its drawers above one another. That can change the width-versus-height trade-off, but it does not tell us whether it fits your kitchen. Use the measurements for the exact model; do not substitute a similar-looking family member.
Decide which extras solve a real problem
A probe, extra rack or finishing control is worth considering when you can say how you will use it. Check the included accessories, not only the promotional photograph. Extra functions do not by themselves establish better cooking results.
Find the cleaning instructions for the baskets, plates, racks and probe before buying. Check which parts can go in a dishwasher and what the manual says about care. We have not run cooking or cleaning tests, so this guide does not award a crispness score or promise a time saving.
Compare costs around your own use
Keep delivery and any accessories inside your purchase budget. For energy, the useful comparison is the same meal and portions, including any separate batches. A headline power rating alone does not tell you the cost of that meal. We do not assume that a model is always cheaper to use than an oven.
Our current prices are dated retailer checks. Follow the shop link to confirm stock, the exact UK model and the total delivered price before ordering.
- Your normal meal fits the individual cooking spaces.
- The drawer layout matches how you cook mains and sides.
- The machine fits its working position and the manual’s clearances.
- You have checked the included kit and care instructions.
Sources and limits
Product examples use the official UK information linked below. Our buying checklist is editorial guidance based on published information. We have not tested these machines or compared their performance in a shared test. Models, bundles and specifications can change; check the exact listing and manual before buying.