Air fryer buying guide: right size, watts and three models worth buying
Litres, watts, temperature and running costs explained without the hype: what actually matters when choosing an air fryer, and the three models we would buy for singles, couples and families.
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In this article
- Why "fryer" is the wrong word (and what it actually does)
- The right capacity: 4, 5.5 or 7.6 litres?
- Power and temperature: where the watts actually matter
- Running cost compared with the oven
- The three models we recommend
- COSORI 5.5 L: the one to start with
- Ninja Foodi Dual Zone 7.6 L: for people who cook for everyone
- Philips 3000 Series with window: for people who want to see
- Quick comparison
- First-week mistakes
- Cleaning: five minutes that make the basket last
- Our verdict
A good air fryer costs between $90 and $230 and gets used every day for years. A bad one ends up in a cupboard after a month because it is too small, too loud or too slow. The difference comes down to four numbers: litres, watts, degrees and presets. Here is what each one means, followed by the three models that make sense right now.
- Best value COSORI Friggitrice ad Aria 5,5 L (CP158-AF) Search on Amazon.com
- Best for families Ninja Foodi Dual Zone AF300EU 7,6 L Search on Amazon.com
- If you want to see it cook Philips Airfryer Serie 3000 6,2 L con finestra (NA332/09) Search on Amazon.com
Why "fryer" is the wrong word (and what it actually does)
There is no hot oil inside. There is a 1400-2400 W heating element and a fan pushing 200 °C air around the food from every side. It is a small convection oven with a compact chamber: because there is so little space to heat, it reaches temperature in two or three minutes and cooks potatoes in a third of the time a regular oven takes. Food comes out crisp because the air dries the surface quickly, not because anything is fried. That also explains the limits: wet batters drip, leafy vegetables fly into the fan and a deep lasagne dish will not fit.
The right capacity: 4, 5.5 or 7.6 litres?
Capacity is the number that matters most, and most people undersize it. The stated litres measure the basket, not the food you can put in it: the pieces need air between them, so usable capacity is roughly half. A 4 L basket cooks 500-600 g of potatoes in one go, two portions. 5.5 L gets you to three or four. 7.6 L split into two drawers handles a full meal for a family.
| People at the table | Recommended capacity | What fits in one batch | Model in this guide |
|---|---|---|---|
| 1-2 | 3.5-4.5 L | Two portions of fries, 4 chicken thighs, a 20 cm pizza | Philips 3000 compact (4.1 L, HD9252) as an alternative |
| 2-4 | 5-6.2 L | A kilo of potatoes, a 1.2 kg chicken, 6 fish fillets | COSORI 5.5 L, Philips 6.2 L with window |
| 4-6 | 7-10 L, ideally dual basket | Main and side together, a whole chicken plus vegetables | Ninja Dual Zone 7.6 L |
A practical tip: measure your counter before ordering. A 5.5 L model takes about 30 × 30 cm and needs ten centimetres of clearance at the back for the vent. Dual-basket units are over 40 cm wide and do not fit under low wall cabinets.
Power and temperature: where the watts actually matter
Between 1400 and 1700 W you will barely notice a difference on a 4-5 L basket. Above 6 litres you want at least 2000 W, otherwise preheating drags on and big batches cook unevenly. Maximum temperature is the second thing to check: most models stop at 200-205 °C, plenty for potatoes, chicken and vegetables. The Ninja reaches 240 °C in Max Crisp mode, which gives frozen food (nuggets, onion rings, fries) a crunch the others cannot match. If frozen food is most of what you cook, those extra 35 degrees are worth paying for.
Presets are handy for the first few weeks; after that almost everyone uses two or three manual combinations. Eleven or sixteen programmes do not change how food cooks. Automatic preheat and the shake reminder halfway through are the two features you will actually use.
Running cost compared with the oven
A 60 cm electric oven draws 2000-2500 W and needs 10-15 minutes just to reach 200 °C. A 1700 W air fryer is ready in three minutes and cooks the same potatoes in 20 minutes instead of 35-40. On a typical cook the oven uses around 1.2-1.5 kWh and the air fryer 0.5-0.6 kWh: roughly half, in line with the 60-70% saving manufacturers claim. At $0.25 per kWh that is about 20-25 cents saved per cook. Four cooks a week and the appliance pays for itself in a little over a year on electricity alone, before you count the time.
The three models we recommend
COSORI 5.5 L: the one to start with
It is the most reviewed air fryer in Europe for a simple reason: it does the basics well at a price that regularly drops below $100. The square basket uses space better than round ones, 1700 W is right for the capacity, and the shake reminder halfway through stops you ending up with raw centres. The touch display is clear and the basket slides out one-handed. No window and not quiet, but after a year of daily use most user complaints concern only the non-stick coating, which needs gentle treatment.
Illustrative image- Square 5.5 L basket, enough for 3-4 people
- 1700 W with preheat and shake reminder
- 11 one-touch presets, 75-205 °C
- Non-stick, dishwasher-safe basket
- One of the most reviewed air fryers in Europe
| capacita | 5,5 L |
|---|---|
| potenza | 1700 W |
| temperatura | 75-205 °C |
| programmi | 11 |
Ninja Foodi Dual Zone 7.6 L: for people who cook for everyone
Two 3.8 L drawers, each with its own element and fan: chicken at 200 °C on one side, vegetables at 180 °C on the other, and with SYNC they finish at the same second. It is the only one in the group that genuinely replaces the oven on a family weeknight. It costs twice as much as the COSORI and takes almost 42 cm of counter, but Max Crisp at 240 °C and 2400 W combined make it the fastest on frozen food. The drawers go in the dishwasher; the perforated crisper plates are the tedious part to clean.
Illustrative image- Two independent 3.8 L drawers: two dishes, ready at the same time
- SYNC and MATCH to time or duplicate cooking
- 6 modes: Air Fry, Max Crisp, Roast, Bake, Reheat, Dehydrate
- 2400 W, up to 240 °C in Max Crisp
- Dishwasher-safe drawers and crisper plates
| capacita | 7,6 L (2 × 3,8 L) |
|---|---|
| potenza | 2400 W |
| temperatura | 40-240 °C |
| programmi | 6 |
Philips 3000 Series with window: for people who want to see
The lit window looks like a gimmick until you use it: you check browning without opening the basket, so the temperature does not drop and the timing does not stretch. Underneath there are 6.2 usable litres for four or five people, Philips' RapidAir Plus airflow and a tray that catches dripping fat. Sixteen functions are more than you will use, but the guided recipes in the HomeID app help in the first weeks. The price sits between the other two.
Illustrative image- Lit cooking window: check without opening the basket
- 6.2 L, good for 4-5 people
- RapidAir Plus technology and 16 functions
- Fat-removal tray for lighter cooking
- Guided recipes in the HomeID app
| capacita | 6,2 L |
|---|---|
| potenza | 2000 W |
| programmi | 16 |
Quick comparison
| COSORI 5.5 L | Ninja Dual Zone 7.6 L | Philips 3000 Series 6.2 L | |
|---|---|---|---|
| Usable capacity | 3-4 people | 4-6 people, two dishes | 4-5 people |
| Power | 1700 W | 2400 W | 2000 W |
| Max temperature | 205 °C | 240 °C (Max Crisp) | 200 °C |
| Window | No | No | Yes, lit |
| Footprint | About 30 × 30 cm | About 42 × 27 cm | About 38 × 30 cm |
| Dishwasher | Yes | Yes | Yes |
| Price range | $90-130 | $150-230 | $120-180 |
First-week mistakes
- Filling the basket to the top. Air has to move between the pieces: half a basket cooks better than a full one. Do two batches if needed.
- Skipping preheat. Three empty minutes are the difference between a sealed surface and one that soaks up oil.
- Not shaking halfway. Potatoes and vegetables need turning at least once or the bottom stays soft.
- Using aerosol cooking spray. Many contain lecithin and propellants that wreck non-stick coatings. Use a pump mister filled with ordinary oil.
- Parking it under a wall cabinet. The steam damages wood and the cabinet base. Leave ten centimetres free behind and above.
Cleaning: five minutes that make the basket last
Fat building up at the bottom is what causes smoke and smells after a few months. The routine is short: basket and plate soaked in hot soapy water for ten minutes while still warm, soft sponge, fully dried before going back. Wipe the heating element at the top every two weeks with a damp cloth, machine cold and unplugged. All three models allow the dishwasher, but intensive cycles wear the coating faster: save it for days when you are genuinely in a hurry.
Our verdict
For one or two people, or anyone who wants to try without spending much, the COSORI 5.5 L is the sensible choice: big enough, fast, and often under $100. If there are four or more of you and you want to stop switching the oven on during the week, the Ninja Dual Zone is the only one that pulls it off, and the premium pays for itself in time saved. The Philips with window is for people who often cook delicate things and want to watch the browning without opening the drawer: a little more than the COSORI, but the convenience is real.
See the COSORI 5.5 L price on Amazon Paid link
Frequently asked questions
Does an air fryer replace the oven?
How much oil do you really need?
Is it noisy?
Will the dishwasher ruin the basket?
Is a dual-basket model worth it?
Can I use baking paper or foil?
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Emily Carter
Editorial byline of the English edition for home, kitchen and beauty. Angle: what verified reviews say happens after a month of use, and the cheap products that surprise.
Guide produced by the editorial team with AI tools from verified sources and published under the editorial responsibility of Andrea Bertolotti. How we work · Report an error
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