Air Fryer Beginner's Guide: Everything You Need to Know
The first thing you should know: it's not actually a fryer.
Air fryers don't fry anything. There's no oil bath, no deep submersion, no magic. What they are is a very efficient compact convection oven — a powerful fan circulates hot air around food at high speed, creating dry heat that browns and crisps the outside while cooking the inside quickly. It's the same principle as a conventional oven, just much more concentrated.
That's actually good news for beginners. There's less to learn than you think, and most of what you already know about cooking transfers over. The main adjustments are temperature and time — lower and shorter than you'd expect, both of which this guide covers in detail.
How an Air Fryer Actually Works
A conventional oven heats a large space and relies on that ambient heat radiating onto your food. It's slow to reach temperature, and the heat distribution is uneven enough that most recipes tell you to rotate the pan halfway through.
An air fryer works differently. The heating element sits just above the food, and a high-powered fan drives hot air downward and around the basket at speed. The basket itself has holes in the base — this isn't decorative. It lets air circulate underneath the food too, which is what crisps the bottom. The whole system is compact enough that temperatures are reached in 3–5 minutes rather than 10–15.
The result is food that browns faster, with a texture that's closer to deep-frying than conventional oven cooking — without submerging anything in oil. That's why frozen chips come out crispy rather than soggy, and why chicken skin gets properly golden rather than pale and soft.
Oven to Air Fryer Conversion
This is the most common question beginners have, and the answer is simple.
| Oven Recipe | Air Fryer Setting |
|---|---|
| Temperature | Reduce by 25°F (or 15°C) |
| Time | Reduce by approximately 20% |
So if a recipe says 400°F for 25 minutes in the oven, set your air fryer to 375°F for approximately 20 minutes. You can use the oven to air fryer conversion calculator on this site if you'd rather not do the maths.
One rule that matters more than the numbers: check early on your first cook. Every air fryer runs slightly differently. Some run hot, some run cool, and the times you see in recipes — including on this site — are starting points, not guarantees. Check your food 2–3 minutes before the listed time on anything new, then adjust.
What to Cook First
Some foods work brilliantly in an air fryer from day one, with almost no adjustment. Start with these before attempting anything complicated.
- Frozen chips / French fries. This is most people's first air fryer cook, and it's a good one. 400°F / 200°C, 12–15 minutes, shake the basket halfway through. They come out crisper than the oven and faster than you'd believe.
- Chicken wings. 400°F / 200°C, 22–25 minutes, flip halfway. The skin crisps properly — arguably better than oven cooking. See the air fryer chicken wings guide for more detail.
- Roasted vegetables. Broccoli, courgette, Brussels sprouts. 400°F / 200°C, 8–12 minutes depending on size, toss in a little oil first. Fast, crispy edges, actually good.
- Reheating leftovers. The air fryer reheats food better than a microwave for almost anything with texture — pizza, roast potatoes, leftover chips. 350–375°F for 3–5 minutes. This alone is worth the counter space.
The 7 Mistakes Most Beginners Make
1. Overcrowding the basket
This is the most common and the most damaging. The air fryer crisps food because hot air moves freely around every surface. Pack the basket too full and the air can't circulate — you get steamed food instead of crispy food, uneven cooking, and longer times.
The rule: single layer, with space between pieces. If you have more food than fits, cook in two batches. The second batch will actually go faster because the machine is already hot.
2. Skipping the preheat
Most air fryers reach temperature in 3–5 minutes. Skipping the preheat and putting food in cold doesn't save meaningful time — it just means the first few minutes of your cook are at a lower temperature than intended, affecting the texture, especially on anything you want crispy.
Preheat for 3 minutes at the cooking temperature before adding food. Some machines have a dedicated preheat button; use it if yours does.
3. Not using oil at all
Air frying doesn't require much oil, but "not much" is not the same as "none." A light spray on most foods — half a second per side with a refillable spray bottle — helps browning, prevents sticking, and improves texture. Without it, some foods come out dry or pale.
The exception: anything that's already fatty (bacon, sausages, chicken skin) doesn't need added oil.
4. Using aerosol cooking sprays
Canned sprays like Pam contain propellants and emulsifiers that break down non-stick coating over time. If your basket is already flaking and you've been using spray-can oil, that's probably why. Get a refillable spray bottle and fill it with olive oil or avocado oil instead.
5. Not flipping or shaking halfway
Hot air circulates in your air fryer, but most machines circulate it more intensely from one direction. Flipping proteins and shaking baskets of chips or vegetables halfway through gives you even browning on all sides. It takes three seconds and makes a real difference to the result.
6. Cooking wet-battered food directly
Traditional wet batter — the kind you'd dip fish in and deep fry — doesn't work in an air fryer. It drips through the basket before it sets, and the result is a mess. If you want a coating, use dry breadcrumbs or panko, pressed firmly onto the food. Breaded (not battered) fish and chicken works well. Wet batter needs hot oil to set instantly — an air fryer can't do that.
7. Ignoring the water drawer
Many air fryers have a small pull-out drawer beneath the basket. It's designed to catch drips, and in some models a small amount of water can be added to reduce smoke when cooking fatty foods like bacon. Check your manual. If that drawer is never cleaned, the accumulated grease will smoke heavily during future cooks.
What You Actually Need (And What You Don't)
The air fryer comes with a basket. That's genuinely most of what you need.
Three things are worth adding:
- A meat thermometer. The Thermapen ONE if budget isn't a concern; the ThermoPop 2 if it is. You can't eyeball doneness on chicken — not reliably. A thermometer takes one second, tells you exactly where you are, and removes all the guesswork. It's the single biggest upgrade to your cooking regardless of appliance.
- Silicone-tipped tongs. You'll use them every single cook. Metal tongs scratch the basket. Silicone tips grip well and won't destroy the non-stick coating. Get ones at least 9 inches long so you're not burning your hand reaching into the basket.
- A refillable oil spray bottle. Aerosol cooking sprays — the Pam-type products in pressurised cans — contain propellants that degrade non-stick coatings. If your basket is already flaking, that's probably why. A refillable bottle filled with olive oil or avocado oil does the same job without the damage.
That's really it. The "air fryer accessory bundle" sets sold online — the pizza pan, the skewer rack, the magnetic cheat sheet — are mostly drawer fillers. The three things above, used regularly, make more difference to results than any branded accessory.
Temperature Guide by Food Type
| Category | Typical Range |
|---|---|
| Frozen snack foods | 375–400°F / 190–200°C |
| Chicken (all cuts) | 375–400°F / 190–200°C |
| Beef & lamb | 375–400°F / 190–200°C |
| Fish & seafood | 375–400°F / 190–200°C |
| Vegetables | 375–400°F / 190–200°C |
| Baked goods | 300–350°F / 150–175°C |
| Reheating | 320–360°F / 160–180°C |
Most air frying happens in a fairly narrow temperature range: 375–400°F for most savoury food, lower for baked goods and reheating. The main adjustment you'll make is time, not temperature.
Caring for Your Air Fryer
- Clean after every use. The basket and drawer wash easily in hot soapy water, or in the dishwasher if your model is rated for it. Burnt-on grease is much harder to remove than fresh grease. Give it three minutes after each cook rather than an hour the next time you want to use it.
- Don't use metal utensils inside the basket. Silicone or wooden. Metal scratches the non-stick coating.
- Don't submerge the main unit. The basket comes out; the base unit stays dry. Wipe the interior with a damp cloth when it needs it.
- Check the heating element occasionally. That's the coil at the top of the interior. If food has splattered onto it, let the unit cool completely, then wipe carefully with a damp cloth. Don't let grease build up there — it smokes.
Frequently Asked Questions
Do I need to preheat an air fryer?
Yes, for most foods. 3 minutes at the cooking temperature before adding food. Some thin items — like bacon or thin fish fillets — are forgiving enough that it doesn't matter much. For anything you want properly crispy, preheat.
Can I put water in the air fryer?
Not in the basket during cooking. A small amount in the drip drawer beneath the basket can reduce smoke when cooking fatty foods — check your manual to confirm your model supports this.
Can I cook from frozen?
Yes, and the air fryer does this particularly well. Most frozen foods go straight in with no defrosting needed. Add 3–5 minutes to fresh cooking times, and check the internal temperature if you're cooking frozen meat.
Why is my food not crispy?
Usually one of three things: overcrowded basket, no oil, or food that was wet/not patted dry before cooking. Fix the first two first — they're the most common culprits.
Is air frying actually healthier than deep frying?
You're using much less oil, so yes, in terms of fat content. But it's not a health food tool — it cooks the same ingredients, just with less added fat. If you were making healthy food before, it stays healthy. Chips are still chips.