Do You Preheat an Air Fryer?
Sometimes. Preheat for anything thin and crisp — fries, nuggets, wings, a quick steak — and skip it for long, slow cooks like roasts, baked potatoes, and most bakes. A 3-minute preheat on a basket-style unit is enough.
The reason is short cooks and long cooks behave differently. A short cook spends its whole window in the basket, so if that basket starts cold the food just warms the metal up instead of crisping. A long cook doesn't care, because the basket reaches temperature long before the middle of a roast is done.
I've cooked on a Platinum 7.6L basket-style air fryer almost daily for two years. The preheat question always comes back to one number: how long the food is in there.
Need the right time and temp for your food? Use the calculator.
Open Calculator →The quick rule
Match what you're cooking to the row. If it's short and you want a crust, preheat. If it's long or you want it to stay moist, don't bother.
| What you're cooking | Preheat? | Why |
|---|---|---|
| Frozen fries, nuggets, tots | Yes — 3 min | Short cook; you want a fast crust on contact |
| Chicken wings (fresh) | Yes — 3 min | Skin needs heat early to crisp |
| Thin steak, chops, burgers | Yes — 3 min | Quick sear; still check internal temp |
| Bacon | Optional | Renders either way; preheat for crisper edges |
| Reheating pizza or leftover fries | No | Short reheat; just add a minute instead |
| Whole roasts, big bone-in chicken | No | Long cook; a hot start burns the outside first |
| Baked potatoes, root veg | No | Slow and steady keeps the inside fluffy |
| Quick breads, cakes, pastries | No | Cold start lets the inside set before the crust locks |
When preheating actually changes the food
Preheating matters most for anything under about 20 mm thick, or any cook under roughly 10 minutes. Thin food cooks so fast that the first few minutes are the whole game. Lose them to a cold basket and the texture never recovers.
In my testing, preheating produced a visibly crispier crust on chicken nuggets at the same final internal temperature. Same nuggets, same time, same 165°F in the middle. The only change was a 3-minute preheat before they went in. The preheated batch came out drier and browner on the surface. The cold-start batch was paler and a little soft underneath.
Frozen fries are the clearest case
They need a hot basket the moment they land. I run them at 200°C (390°F) after a 3-minute preheat, single layer, shake at the halfway mark. Frozen chips also take about 3–4 minutes longer than refrigerated chips of the same thickness, so don't borrow a fresh-fries time and then wonder why they came out pale.
When preheating is pointless — or works against you
For long cooks, a preheat does almost nothing useful, and in a few cases it actively hurts.
Roasts and big bone-in chicken
A whole chicken or a thick roast sits in the basket for 30 minutes or more. The basket is hot within the first few. Start it screaming hot and you brown the outside long before the centre reaches a safe 165°F, which leaves you a dark skin over a raw middle.
Baked potatoes and root veg
Baked potatoes want low and slow so the inside goes fluffy. A blast of preheated air toughens the skin before the centre softens.
Quick breads, cakes, and pastries
Start these in a cold basket. The gentle ramp-up lets the inside set before the surface browns. Preheat them and you get a dark crust over a doughy middle.
Reheating leftovers
Skip it. A reheat is short, and you're warming food through rather than chasing a fresh crust. I reheat two pepperoni slices for 3–4 minutes at 180°C (355°F) straight into a cold basket, and the base still stays crisp. No preheat, no microwave sogginess.
How long to preheat: basket-style vs oven-style
Three minutes at the cooking temperature covers a basket-style unit. Run it empty, then add the food.
Oven-style air fryers are a different appliance. They hold more air, so they need 4–5 minutes to come up to temperature, and most foods also need roughly +2 to 5 minutes of cook time on top. If your oven-style food keeps coming out soft, the fix is usually more cook time, not a longer preheat.
If your model has a preheat button, use it. If it doesn't, set the temperature you're about to cook at, run the basket empty for 3 minutes, then load it. Every time on this site is tested on a basket-style unit, so treat oven-style numbers as a starting point plus a few minutes.
Preheating is not a food-safety step
Preheating changes texture. It does not make food safe. The only thing that confirms a protein is done is its internal temperature, read with a thermometer.
- Poultry, including ground: 165°F / 74°C
- Ground beef, pork, lamb: 160°F / 71°C
- Steaks, chops, roasts (beef, pork, lamb): 145°F / 63°C, then rest 3 minutes
- Fish and shellfish: 145°F / 63°C, or until the flesh is opaque and flakes
A preheated basket gets you a better crust at the same internal temperature. It's not a shortcut around checking. Pull proteins when the thermometer says so, not when the timer ends.
The short version
- Short, crisp cook (under ~20 mm or under ~10 min): preheat 3 minutes.
- Long roast, bake, or reheat: skip the preheat, maybe add a minute of cook time.
- Basket-style preheats in 3 minutes. Oven-style needs 4–5, plus a little extra cook time.
- Preheat for texture, never for safety. Check proteins with a thermometer.