Air fryer size guide: what a family actually needs

The number on the box is the volume of the basket. It is not the number of people the appliance feeds, and the gap between those two things is why so many households end up cooking in two batches.

This guide compares published specifications and Australian retailer listings. Nothing here was cooked in, measured or timed by us, and where that matters it is said plainly.

What the litre figure actually describes

A 7 litre air fryer has a basket that holds 7 litres of air. Food has to sit in a single layer with space around it for the hot air to move, so the usable amount is well under the stated volume, and it is usable area rather than volume that decides how much comes out crisp.

Two appliances with the same litre figure can therefore behave very differently:

• A deep, narrow basket holds the stated litres and cooks a small footprint of food. Stacking fills it and ruins it
• A wide, shallow basket holds the same litres across more floor area and cooks more food properly in one go

Manufacturers publish the litres and rarely publish the basket footprint. Where a listing gives external dimensions, that is the closest available proxy, and it is the measurement worth hunting for.

The practical translation. Chips for two people fit in almost anything. Chips plus crumbed chicken for four, at the same time, is where a single small basket stops working.

Three things that decide the size, in order

1. How many people eat at once. Not how many live in the house. A household of five where two eat later is a different problem from five at the table at 6pm.

2. Whether you want to cook two things at once. This is the question most people do not ask and then discover. A single basket cooks one thing at one temperature. If dinner is regularly a protein plus a vegetable or chips, one basket means sequencing, and the first thing is cold when the second is done.

3. Where it lives. An air fryer is a large object that never goes away. Measure the bench depth, and measure the clearance to the underside of the overhead cupboards, because most of these need air space above and behind and the listing will say how much.

Single basket, dual basket, or oven style

Single basket. Simplest, cheapest, smallest footprint for the capacity. Fine for one or two people, or for a household that uses it as a side-dish appliance next to an oven.

Dual basket. Two independent drawers, usually different sizes, each with its own temperature and timer. Two things finish at the same time. The published capacities are split rather than shared, which is the part to read carefully: an 11 litre dual is not an 11 litre space, it is two drawers that add up to 11.

The Tefal 11 Litre XXXL Dual Easy Fry lists drawers of 6.5 L and 4.5 L, and the Tefal Dual Easy Fry Essential XXL lists 5.2 L and 3.1 L. Both were $344 and $299 respectively at The Good Guys and Tefal’s own Australian store on 13 September 2026.

Oven style. A benchtop oven with an air fry function, with a door and shelves rather than a drawer. Bigger inside, much bigger outside. The Breville Smart Oven Air Fryer Noir lists a 22 L capacity that accommodates a 30 cm pizza or six slices of toast, at $549 on 13 September 2026. It is a different appliance that happens to air fry, and it suits a household replacing a benchtop oven rather than adding a gadget.

The honest summary. One or two people, single basket. Four people with one thing on the plate, a large single. Four people with two things, dual. Replacing the oven for most of summer, oven style.

The specifications worth comparing

These are published on most Australian listings, and they separate similar-looking appliances:

• Capacity, and whether it is split. A dual’s larger drawer is the real limit on a single item
• External dimensions. The Ninja Crispi 4-in-1 lists 290 mm high, 395 mm wide and 268 mm deep and just over four kilos, which is unusually specific and unusually useful
• Dishwasher-safe parts. Named on most listings. This is the specification that decides whether it gets used on a weeknight
• Basket coating. Smeg lists its ceramic non-stick basket as free from PFAS. Several brands say nothing about coating at all, which is not the same as saying it is different
• Warranty. Two years is the common Australian figure across Philips, Smeg, Hisense, Ninja and Breville listings. Three years appears on some built-in ovens rather than benchtop units
• Extra functions. Steam, dehydrate, bake and grill appear on the dearer models. They are genuine features and they are also where the price goes

What the listings do not tell you

Worth knowing before you weigh up two of them:

• No brand publishes noise levels. They all make fan noise
• No brand publishes energy consumption per cook. Wattage is sometimes listed, which is the draw rather than the cost of a meal. What it costs to run an air fryer, slow cooker and oven works through the running cost question properly
• No brand publishes basket floor area, which is the measurement that would actually answer the sizing question
• Preheat behaviour differs and is not stated
• Capacity claims are sometimes given in food rather than litres. Ninja’s Crispi Pro lists a 4 kg chicken and describes 2.3 L and 5.7 L glassware; Panasonic’s air fry microwave lists 800 g of frozen chips. Those are comparable to each other only loosely

Where the price sits

On 13 September 2026 at the Australian listings checked, benchtop air fryers ran from $249 for a Hisense 7 litre 3-in-1 to $499 for a Philips 5000 Series 7.2 litre XXL. Dual-drawer models clustered around $299 to $344. Smeg’s 7.3 litre sat at $399 across four colours, which is a design premium rather than a capacity one.

Prices move constantly and this is a dated observation, not a current quote. Check the retailer before ordering.

Before you buy

• Measure the bench depth and the clearance above it
• Decide whether you need two temperatures at once, because that decision cannot be undone later
• Check which parts are dishwasher safe
• Check the warranty term on the listing rather than assuming
• If it is replacing the oven rather than supplementing it, look at oven style instead

If you are still deciding whether this is the right appliance at all, air fryer or slow cooker is the comparison to read first, and slow cooker meals you can prep the night before covers the other half of that split.