How do I reheat food in an air fryer without drying it out?

The air fryer is the best reheating tool in most kitchens for anything that was once crisp — with settings by food type, and the cases where a microwave or an oven still wins.

Difficulty: beginner
Time: 12 min
Read: 4 min
Safety: caution

Short answer

Reheat at a lower temperature than you cooked at — 150–160°C for most things — for 4–10 minutes, in a single layer, checking early. Crisp things go in dry and bare. Anything that will dry out gets a splash of water and a loose foil cover for most of the time, uncovered for the last two minutes.

A microwave reheats fast and leaves everything soft; an oven reheats well and takes twenty-five minutes and a lot of energy for one plate. An air fryer sits between them and is the right answer for a large share of leftovers, particularly anything that had a crust when it was new.

Safety

Reheated food must reach steaming hot right through — 75°C in the centre — not merely be crisp on the outside. An air fryer browns the surface fast, which makes it easy to serve something that looks reheated and is cold in the middle. Check thick pieces with a probe, and reheat food only once.

Step by step

Take the food out of the fridge while the machine preheats.Ten minutes on the counter takes the fiercest chill off and means the outside is not overcooked before the middle is warm. Preheat the air fryer for 2–3 minutes — the basket being hot at the start makes a real difference to the surface.
Drop the temperature from what you would cook at.The food is already cooked; you are warming it through and re-crisping the surface. 150–160°C is right for most reheating. 180°C and above browns the outside long before the centre is hot, which is exactly the failure mode to avoid.
Single layer, space between pieces, shake halfway.Piled food reheats unevenly and steams. Spread it out even if that means two rounds, and shake or turn at the halfway point so the airflow reaches the other side.
Handle the crisp things bare and dry.Chips, roast potatoes, wedges, breaded chicken, spring rolls, pizza slices, pastry, sausage rolls, battered fish, roast vegetables: straight into the bare basket, no oil, no cover, 150–160°C for 3–6 minutes. These come out better than they did from any other method.
Protect the things that dry out.Roast meat slices, chicken breast, fish and rice all lose moisture fast in moving hot air. Add a teaspoon of water or stock, cover loosely with foil weighed down by the food, and reheat at 150°C. Take the foil off for the last minute or two if you want any colour.
Give wet food a container.Curry, stew, chilli, baked beans, pasta with sauce: put them in a small ovenproof dish or a foil tray inside the basket, cover, and stir once part way through. There is no advantage over a microwave here except that nothing is going to spatter — use whichever is easier.
Check the centre before serving.The surface tells you nothing. For anything thick — a slab of lasagne, a whole chicken thigh, a large pie — use a probe and look for 75°C in the middle, or cut it and check it is steaming throughout. Put it back for two more minutes rather than guessing.

Tips

Pizza is the standout case: 160°C for 3–4 minutes gives a crisp base and melted cheese that no microwave will ever match.
Rice reheats safely in an air fryer only if it was cooled and refrigerated quickly after cooking. Add a splash of water, cover, and get it steaming right through.
Anything with a sauce glaze — sticky wings, glazed ribs — will darken fast. Drop to 140°C and give it longer.
Do not reheat the same portion twice. Split leftovers into meal-sized amounts before they go in the fridge so you only ever reheat what you will eat.

Common mistakes

Using the original cooking temperature to reheat — It cooks the surface a second time. Crisp goes to hard, meat goes dry, and the middle is still behind. Lower and slower is the whole technique.
Judging doneness by how crisp the outside looks — An air fryer crisps a surface in three minutes regardless of what the centre is doing. That is precisely the case where reheated food is served under-heated.

If it doesn't work

Outside crisp, middle still cold

Cause: Temperature too high, or the pieces are too thick — Fix: Reduce to 140–150°C, cover loosely with foil, and give it longer. Cut thick items in half so the heat has less distance to travel.

Meat comes out dry and stringy

Cause: Moving hot air has stripped the surface moisture — Fix: Add a spoonful of liquid, cover with foil for most of the time, and stop as soon as it is hot rather than letting it sit in the machine.

Everything tastes faintly of the last thing you cooked

Cause: Fat residue in the drawer and on the element — Fix: Wash the basket and drawer, wipe the element when cold, and run the empty machine hot for five minutes with the window open.

Questions people ask

Is an air fryer better than a microwave for reheating?

For anything that was crisp, dramatically better. For soup, stew, rice and sauces, a microwave is faster, more even and uses less energy. Most households want both and should choose per item.

Can I reheat food straight from frozen in an air fryer?

Cooked food from frozen works if you go low and long — 140–150°C, covered, with plenty of time, then uncovered to crisp. Do not do it for anything thick where the outside will be done long before the centre thaws.

How hot does reheated food need to be?

Steaming hot right through, which in practice means 75°C in the centre held briefly. That applies whatever appliance you use.