Preheating an air fryer is a simple step, but it can make a noticeable difference in how some foods turn out. When the cooking chamber is already hot before you add your food, the food starts cooking immediately instead of spending the first few minutes waiting for the appliance to reach the desired temperature. This can be particularly helpful when you’re trying to achieve crispy French fries, golden chicken wings, browned vegetables, or a crunchy coating on frozen foods.
However, there’s a common misconception that every air fryer must be preheated before every cooking session. That’s not necessarily true. Many modern air fryers heat up quickly, and some recipes are designed to work perfectly well without a separate preheating cycle. Whether you should preheat depends on the air fryer you’re using, the food you’re preparing, and the instructions provided with the recipe.
The good news is that learning how to preheat an air fryer is very easy. In most cases, you only need to set the cooking temperature, allow the appliance to run for a few minutes, and then add your food. Some models make the process even easier by including a dedicated preheat function.
In this guide, we’ll explain exactly how air fryer preheating works, how long it usually takes, what temperature you should use, when you can skip it, and how to preheat models that don’t have a dedicated preheat button. We’ll also look at common mistakes that can affect cooking results.
Do You Need to Preheat an Air Fryer?
No, you don’t always need to preheat an air fryer. While preheating can be useful for certain foods, it isn’t a requirement for every recipe or every air fryer.
An air fryer works by circulating heated air around the food inside its cooking chamber. When you start with a cold appliance, the heating element first has to bring the chamber up to the selected temperature. During this period, your food is already inside and may begin cooking before the air fryer reaches its target temperature.
When you preheat, the cooking chamber is already hot when the food goes in. This gives the food an immediate exposure to the intended cooking temperature. For foods that depend on quick browning or crisping, that small difference can be useful.
For example, imagine you’re cooking frozen French fries at 400°F. If you place the fries into a cold air fryer, the appliance and fries are heating at the same time. If you preheat first, the fries enter an already-hot environment and can start crisping sooner.
That doesn’t mean the preheated method will always produce dramatically better food. Air fryer design, food quantity, moisture content, basket arrangement, and cooking temperature all affect the final result. Preheating is simply one factor that can help.
When Is Preheating Worthwhile?
Preheating is most useful when the recipe depends on a quick cooking process or when you want a nicely browned and crisp exterior.
Foods that can benefit include:
- Frozen French fries
- Chicken wings
- Chicken nuggets
- Breaded chicken
- Frozen appetizers
- Spring rolls
- Roasted vegetables
- Some fish fillets
- Foods with short cooking times
Take chicken wings as an example. If you’re trying to get crisp skin, starting them in a hot air fryer can help the surface begin browning immediately. This doesn’t replace proper cooking temperature or good airflow, but it can contribute to a better texture.
The same principle applies to frozen snacks. A hot cooking chamber can help the outside of a breaded snack become crisp while the inside heats through.
Preheating can also be helpful when you’re following a recipe that has been tested using a preheated appliance. If the recipe says to preheat to 400°F and then cook for 12 minutes, those 12 minutes were likely intended to begin after the air fryer reached the required temperature.
When Can You Skip Preheating?
There are also plenty of situations where you can skip this step.
If you’re cooking something that requires a relatively long cooking period, the difference between starting in a cold or preheated air fryer may be less noticeable. The appliance will reach its operating temperature during the cooking process anyway.
For example, if you’re cooking a large piece of food for 30 minutes, spending an additional few minutes preheating may not provide a significant advantage compared with a short 10-minute recipe.
You may also be able to skip preheating when reheating certain foods. If your goal is simply to warm leftovers rather than create a deeply crisp exterior, there’s often less reason to use a separate preheat cycle.
Most importantly, check the instructions for your particular air fryer. Some manufacturers design their cooking programs around automatic heating, while others may recommend preheating for certain foods but not others.
So, does an air fryer need to be preheated? Not in every situation. Think of preheating as a useful cooking technique rather than a rule that applies to every meal.
Does Preheating Make Food Crispier?
Preheating can help some foods become crispier, but it isn’t the only thing responsible for crisp results.
Crispiness is affected by several factors, including the amount of moisture in the food, the cooking temperature, the amount of oil used, the food’s surface area, and how much food is packed into the basket.
Starting with a hot cooking chamber can help because the food is exposed to high heat immediately. This is particularly useful for foods where you want the outside to brown quickly.
However, you can still end up with soft fries or soggy chicken wings even after preheating if the basket is overcrowded. When too much food is packed together, steam can build up and interfere with the dry heat needed for browning.
For example, cooking a single layer of frozen fries with enough space for air to circulate will usually produce a better texture than filling the basket completely, even if both batches were cooked in a preheated air fryer.
This is why preheating should be viewed as one part of good air fryer cooking, not a magic solution for every texture problem.
How to Preheat an Air Fryer
If your recipe calls for preheating, the process is usually straightforward. You don’t need special equipment or complicated settings. Most basket-style air fryers can be preheated using the same basic method.
Step 1: Check Your Air Fryer’s Instructions
Before using a general preheating method, check the instructions that came with your air fryer.
This is particularly important if you’re using a newer model with automatic cooking programs. Some air fryers have a dedicated preheat function, while others automatically account for heating time as part of the selected cooking program.
Your owner’s manual may also specify whether the basket should remain inside, how long the appliance should preheat, or whether preheating is recommended for specific cooking modes.
If the manufacturer’s instructions differ from a general guide, follow the manufacturer’s instructions. Your specific model was designed and tested around those settings.
Step 2: Set the Cooking Temperature
Set the air fryer to the temperature recommended by your recipe.
For example, if you’re following a recipe for chicken wings that calls for 400°F, set the appliance to 400°F before beginning the preheating process.
You don’t normally need to choose a higher temperature just because you’re preheating. The purpose is to bring the air fryer to the temperature you’ll actually use for cooking.
If a recipe calls for 375°F, preheat to 375°F. If it calls for 350°F, use 350°F.
This makes the cooking process more predictable and helps prevent the outside of delicate foods from becoming over-browned before the inside is properly cooked.
Step 3: Keep the Basket or Cooking Tray in Place
For most basket-style air fryers, leave the basket in its normal position while the appliance preheats.
The basket is designed to work with the air fryer’s heating and airflow system. You generally don’t need to remove it and heat the outer compartment separately.
Keeping the basket in place also means the basket itself becomes warm. When you add cold food afterward, the food is being placed into a hot cooking environment rather than a completely cold one.
That said, air fryer designs differ. If your manufacturer specifically instructs you to remove or handle the basket differently during preheating, follow those instructions.
Step 4: Run the Air Fryer Empty
If your air fryer doesn’t have an automatic preheat setting, you can usually run it empty for a short period.
Set the desired temperature and allow the appliance to heat without food inside.
For many basket-style models, about 3–5 minutes is a reasonable general starting point, although the exact preheating time varies from one appliance to another.
You don’t normally need to let an air fryer run empty for 10 or 15 minutes. These appliances have relatively small cooking chambers and are designed to heat quickly.
If your particular model specifies a different preheating period, use the manufacturer’s recommendation instead.
Step 5: Add Your Food and Start Cooking
Once the air fryer is preheated, carefully open the basket and add your food.
Try not to leave the basket open for an unnecessarily long time. Opening the appliance allows hot air to escape, which means the cooking chamber will temporarily lose some heat.
For example, if you’re making French fries, have the fries ready before the preheating cycle finishes. That way, you can quickly place them into the basket, spread them out properly, and begin cooking.
After adding the food, set the cooking time recommended by your recipe.
One important point is that preheating time and cooking time are separate. If a recipe says to preheat for 5 minutes and then cook for 15 minutes, the 15-minute cooking period normally begins after the preheating step.
How Long Does an Air Fryer Take to Preheat?
One of the most common questions people ask is how long to preheat an air fryer.
For many basket-style air fryers, preheating takes approximately 3–5 minutes. However, this is only a general range. Some smaller appliances may reach the target temperature in less time, while larger air fryer ovens may require longer.
The actual heating speed depends on the appliance’s design, wattage, cooking chamber, and starting temperature.
A small 2-quart air fryer, for example, has much less space to heat than a large air fryer oven. It may reach the target temperature quickly, while a larger appliance needs more time to heat its entire cooking chamber.
Typical Air Fryer Preheating Times
| Air Fryer Type | Approximate Preheating Time |
|---|---|
| Small basket air fryer | 2–3 minutes |
| Standard basket air fryer | 3–5 minutes |
| Large basket air fryer | 3–5+ minutes |
| Air fryer oven | 5–10 minutes |
These times should be treated as general guidelines rather than exact rules.
If your air fryer has a preheat indicator, use that as your primary guide. If it doesn’t, follow the time recommended by the manufacturer or recipe.
What Affects Air Fryer Preheating Time?
Several factors can influence air fryer preheating time.
Wattage is one factor. An air fryer with a powerful heating system may reach its target temperature quickly, although wattage by itself doesn’t tell you exactly how fast an appliance will heat.
Cooking chamber size also matters. A larger chamber contains more air and may require more time to reach the desired temperature.
Air fryer design makes a difference too. A compact basket-style model and a large air fryer oven don’t necessarily heat in the same way.
The starting temperature of the appliance can also affect the process. An air fryer that has recently been used may already be warm, while one that has been sitting unused in a cool kitchen will start closer to room temperature.
Even the ambient room temperature can have a small effect.
Because of these variables, don’t worry if your air fryer doesn’t match the exact timing of another model. The goal is to get the appliance to the appropriate cooking temperature, not to force every air fryer into the same preheating schedule.
What Temperature Should You Preheat an Air Fryer?
The correct air fryer preheat temperature is usually the same temperature your recipe recommends for cooking.
This is one of the easiest rules to remember:
Preheat at the cooking temperature, not at a randomly higher temperature.
If your recipe calls for 350°F, preheat to 350°F. If it calls for 375°F, use 375°F. If it calls for 400°F, preheat to 400°F.
The temperature you choose should match the food you’re preparing and the cooking method being used.
Preheating at 350°F
A temperature of 350°F (175°C) provides moderate heat and can be useful for foods that don’t require aggressive browning.
Depending on the recipe, this temperature can work well for certain vegetables, baked foods, reheating tasks, and foods that need a little more time to heat through without becoming too dark on the outside.
For example, if you’re reheating a delicate food that could dry out at very high heat, 350°F may be more appropriate than 400°F.
Preheating at 375°F
375°F (190°C) is a useful middle-ground temperature for many air fryer recipes.
It provides enough heat for browning while being less aggressive than 400°F. Depending on the food, it can work well for chicken, vegetables, breaded foods, and other everyday air fryer meals.
However, temperature should always be chosen based on the food and recipe rather than simply because 375°F is a popular setting.
Preheating at 400°F
400°F (200°C) is one of the higher temperatures commonly used in air frying.
It’s often useful for foods where you want strong browning and crisping, such as French fries, chicken wings, and certain frozen foods.
For example, if a frozen French fry package recommends 400°F, preheating the air fryer to that temperature means the fries enter an already-hot environment and can begin cooking immediately.
However, higher isn’t automatically better. Some foods can burn or dry out when exposed to excessive heat, particularly if they’re small, thin, sugary, or delicate.
Always use the temperature recommended for the particular food you’re cooking.
How to Preheat an Air Fryer Without a Preheat Button
Not every air fryer has a dedicated preheat button, but that doesn’t mean you can’t preheat it. Many basic and older models simply give you control over the temperature and cooking time, leaving the preheating process up to you.
The good news is that manual preheating is straightforward. Instead of looking for a special setting, you simply set the air fryer to the temperature you intend to use and allow it to run empty for a few minutes.
For example, if you’re preparing frozen French fries and the instructions recommend 400°F, set your air fryer to 400°F and let it run for around 3–5 minutes. Once the preheating period is complete, add the fries and begin the cooking cycle.
How to Preheat an Air Fryer Manually
Follow these simple steps:
- Place the cooking basket or tray in its normal position.
- Set the air fryer to your desired cooking temperature.
- Set a short timer, usually around 3–5 minutes.
- Start the air fryer while it is empty.
- Allow it to heat completely according to your model’s instructions.
- Carefully add your food.
- Set the cooking time recommended by the recipe.
The important thing is to understand that this is simply a manual way of creating a preheat cycle. You’re not using a special feature; you’re allowing the heating element and fan to bring the cooking chamber up to temperature before the food goes in.
How Do You Know When an Air Fryer Is Preheated?
This depends on the design of your appliance.
Some digital air fryers display a preheating message or use a light or sound to indicate that the selected temperature has been reached. Other models may simply start counting down once the cooking program begins.
Basic air fryers with manual dials may not provide any indication at all. In that case, using the manufacturer’s recommended preheating time is usually the simplest approach.
Don’t worry if you can’t see or measure the exact internal temperature yourself. A home air fryer isn’t necessarily designed to give you a precise temperature reading of the cooking chamber.
How to Preheat an Air Fryer Oven
An air fryer oven works on the same basic principle as a basket-style air fryer, but its larger cooking chamber and oven-style design can change the preheating process.
Because there is more space inside an air fryer oven, it can take longer to reach the desired temperature. Some models also have several cooking modes, including air fry, bake, roast, broil, and other functions.
When preheating an air fryer oven, the most important thing is to select the cooking mode and temperature that match your recipe.
Step 1: Choose the Appropriate Cooking Mode
Start by selecting the mode you intend to use.
If you’re following an air frying recipe, select the air fry function if your appliance has one. Using a different cooking mode can change the way the heating elements and fan operate.
Step 2: Set the Temperature
Set the temperature specified by your recipe.
For example, if you’re preparing chicken wings at 400°F, set the air fryer oven to 400°F.
Avoid assuming that every recipe needs the same temperature simply because air fryer ovens can reach high temperatures.
Step 3: Allow the Oven to Heat
Close the door and allow the appliance to heat.
Some air fryer ovens will display a preheat indicator or beep when they are ready. Others may require you to estimate the preheating period based on the manufacturer’s instructions.
A larger air fryer oven may take around 5–10 minutes or sometimes longer depending on its design.
Step 4: Add Your Food
Once the oven has reached the required temperature, place your food on the appropriate rack or tray.
Try to arrange the food so that hot air can circulate around it. This is especially important when using an air fryer oven because the cooking area is larger and food may be spread across trays or racks.
If you’re cooking on multiple levels, check your recipe and appliance instructions to determine whether you need to rotate the trays during cooking.
Can You Preheat an Air Fryer Empty?
Yes, preheating an air fryer empty is generally how the process is performed.
The purpose of preheating is to heat the cooking chamber before the food is introduced. This means you normally don’t need to place food inside while the appliance is coming up to temperature.
However, there is an important safety consideration: always follow your air fryer’s instructions.
Some manufacturers may have specific instructions about preheating, cooking trays, or accessories. If your manual says that a particular cooking mode should not be preheated, follow that guidance.
Don’t Put Loose Parchment Paper in an Empty Air Fryer
This is particularly important.
If you use parchment paper in your air fryer, don’t place a loose sheet inside while preheating without food on top of it.
The air circulation inside the appliance can cause lightweight parchment paper to move. If it gets lifted toward the heating element, it could become damaged or create a safety hazard.
If parchment paper is appropriate for your recipe and your manufacturer allows its use, place it according to the manufacturer’s instructions and make sure it is held down properly by food.
Can You Preheat an Air Fryer With the Basket Inside?
For most basket-style air fryers, you can leave the basket inside while the appliance preheats.
In fact, this is generally the normal way to use the appliance. The basket is designed to remain in position while the heating element and fan circulate hot air around the cooking chamber.
Preheating with the basket in place also means the basket itself becomes warm before you add the food. When cold food enters the basket, it isn’t immediately coming into contact with a completely cold cooking surface.
However, don’t assume that every air fryer has identical instructions. Some models have removable cooking trays, racks, or accessories that may have specific requirements.
If your manufacturer’s manual gives different instructions, follow those instead.
How to Preheat Popular Air Fryer Brands
The basic principle of preheating is similar across most brands, but the buttons, programs, and display systems can be different.
This is why it’s better to understand the general process rather than memorize one method for every appliance.
How to Preheat a Ninja Air Fryer
Many Ninja air fryers use digital controls that allow you to choose a cooking function, temperature, and time.
If your particular Ninja model includes a preheat function, use it according to the instructions for that model.
If it doesn’t have a dedicated preheat function, you can generally set the desired cooking temperature and allow the appliance to run for a few minutes before adding your food.
For example, if you’re preparing wings at 400°F, you can preheat the appliance to 400°F before placing the wings in the basket.
Because Ninja has many different air fryer designs, including basket-style and oven-style appliances, don’t assume that the controls on one model will be identical to another.
How to Preheat a Cosori Air Fryer
Cosori air fryers also vary by model. Some have dedicated programs and digital controls, while others use a simpler interface.
If your Cosori model has a preheat function, use that setting according to the manufacturer’s instructions.
If it doesn’t, manually set the desired cooking temperature and allow the appliance to heat for a few minutes.
The important thing is not the name of the button but the result: the cooking chamber should be brought to the appropriate temperature before the food is added when the recipe calls for preheating.
How to Preheat a Philips Air Fryer
Philips offers several air fryer designs, and the controls can differ depending on the model.
If your Philips air fryer requires preheating, set it to the recommended cooking temperature and allow it to heat before adding your food.
Some recipes may also be designed specifically around the cooking behavior of a particular appliance. If you’re following a Philips recipe or using instructions supplied with your model, those instructions should take priority over a general preheating guide.
How to Preheat an Instant Vortex Air Fryer
Instant Vortex models generally use digital controls, but the exact interface and cooking programs vary.
If your model includes a preheat function, select it and follow the prompts shown on the display.
For models without a dedicated preheat feature, manually set the desired temperature and allow the appliance to heat for a short period before adding food.
For example, if you’re cooking frozen snacks at 400°F, you can preheat to 400°F and then add the snacks once the heating cycle is complete.
What Happens If You Don’t Preheat an Air Fryer?
If you don’t preheat your air fryer, nothing dangerous or unusual necessarily happens. The appliance will simply begin heating while the food is already inside.
For many foods, this works perfectly well.
The difference becomes more noticeable with recipes where timing, browning, or crispiness are particularly important.
Suppose a recipe tells you to cook chicken wings for 15 minutes at 400°F after preheating. If you place the wings into a cold air fryer and start the same 15-minute timer, part of those 15 minutes will be spent bringing the appliance up to temperature.
As a result, the wings may need additional cooking time to achieve the same level of browning and doneness.
The same idea applies to frozen fries. If you start them in a cold air fryer, they may still become crispy, but you might need to adjust the cooking time or accept a slightly different texture.
Does Skipping Preheating Always Produce Worse Food?
No.
This is an important distinction because air fryer cooking isn’t an exact science where one method always wins.
Some air fryers are designed to heat so quickly that preheating provides little noticeable advantage. Some recipes are also developed specifically for cooking without preheating.
The type and quantity of food matter too.
A small portion of thin frozen fries may respond differently to a cold start than a large piece of chicken that needs a longer cooking period.
This is why it’s better to look at preheating as a technique that can be useful in certain situations rather than a requirement for every recipe.
Common Air Fryer Preheating Mistakes
Even though preheating is simple, a few common mistakes can reduce its usefulness.
Preheating for Too Long
One of the biggest mistakes is assuming that longer preheating always means better cooking.
It doesn’t.
Most air fryers have relatively compact cooking chambers and powerful heating systems. Running the appliance empty for 10–15 minutes when only a few minutes are needed can simply use more electricity and add unnecessary waiting time.
If your manufacturer recommends a specific preheating period, use that recommendation.
Using the Wrong Temperature
Another common mistake is choosing an unnecessarily high temperature.
For example, if your recipe calls for 350°F, there is usually no reason to preheat to 450°F just because the appliance can reach that temperature.
The goal of preheating is to reach the correct cooking temperature, not the highest temperature available.
Starting too hot can cause delicate foods to brown too quickly or develop a burnt exterior before the inside has finished cooking.
Adding Food Too Early
If a recipe specifically calls for preheating, adding the food before the air fryer reaches temperature changes the cooking process.
This isn’t necessarily harmful, but it means you’re no longer following the recipe exactly.
For consistent results, allow the air fryer to complete its preheating period before adding the food.
Overcrowding the Basket
Preheating doesn’t fix poor airflow.
This is one of the most important points to remember.
Air fryers rely on hot air moving around the food. When the basket is packed too tightly, food can trap moisture against neighboring pieces.
Instead of crisping, the food may steam.
For example, if you’re making frozen fries, spread them out as much as possible. If you’re cooking a large batch, consider cooking in two rounds rather than filling the basket to the top.
Using Parchment Paper During Preheating Without Food
Loose parchment paper can be lifted by the air fryer’s fan.
If it moves toward the heating element, it can become damaged or create a safety problem.
If your air fryer and recipe allow parchment paper, it’s generally better to add it when you’re ready to cook and ensure the food holds it in place.
Ignoring the Manufacturer’s Instructions
General air fryer advice is useful, but your appliance’s manual should always take priority.
Manufacturers know how their heating elements, fans, baskets, trays, and cooking programs are designed to operate.
If your manual says preheating isn’t required, you don’t need to create an unnecessary preheat cycle simply because another air fryer owner does it differently.
Does Preheating an Air Fryer Use More Electricity?
Yes. Any time you run an air fryer before cooking, you’re using some additional electricity.
However, the amount used during a short preheating period is relatively small compared with running the appliance for a long cooking cycle.
For example, a 1,500-watt air fryer operating continuously for five minutes would theoretically consume about 0.125 kWh during that period. Actual consumption can be lower because the heating element may cycle on and off rather than draw its maximum power continuously.
This is useful to keep in mind if you’re comparing air fryer energy use with other cooking appliances.
If preheating gives you noticeably better results for a particular food, the small amount of additional electricity may be worthwhile. But if you’re cooking something that doesn’t benefit from preheating, skipping it can save both time and a small amount of energy.
The best approach is to use preheating when it serves a purpose rather than doing it automatically before every meal.
Preheating vs. Not Preheating an Air Fryer
The question of whether to preheat an air fryer often comes down to the type of food you’re cooking and the result you’re trying to achieve. Both methods can work, so there’s no need to think of one as universally correct.
When you preheat an air fryer, the cooking chamber is already hot when the food goes in. This can be helpful when you want the food to begin browning or crisping immediately. It can also make cooking times more predictable when you’re following a recipe that was developed around a preheated appliance.
When you don’t preheat, the food goes into a cooler cooking chamber and begins heating while the air fryer comes up to temperature. This can still produce excellent results, particularly for foods that require longer cooking times.
| Factor | Preheated Air Fryer | No Preheating |
|---|---|---|
| Starting temperature | Cooking chamber is already hot | Chamber heats while food cooks |
| Browning | Often faster and more consistent | May take longer |
| Crispiness | Useful for many crispy foods | Can still produce crisp results |
| Cooking time | Usually easier to predict | May require adjustment |
| Energy use | Slightly higher | Slightly lower |
| Convenience | Requires a few extra minutes | Faster to start cooking |
| Best suited to | Short, crispy recipes | Longer cooking and some reheating |
Which Method Should You Choose?
If you’re making something like chicken wings, frozen fries, or breaded chicken, preheating can be worthwhile because these foods often benefit from a hot start.
If you’re cooking something for 25–30 minutes or longer, the advantage may be less obvious. By the time the food is finished, the air fryer has already been operating at its target temperature for most of the cooking period.
For example, imagine you’re reheating a slice of pizza for 5 minutes. Preheating for another 5 minutes would double the amount of time you’re spending on the task. In that situation, you may decide that the small improvement in crispiness isn’t worth the extra waiting time.
On the other hand, if you’re cooking frozen fries for a short period and want a crisp exterior, the extra few minutes of preheating may be worthwhile.
The best choice depends on the food, recipe, and your priorities.
Best Foods to Cook After Preheating an Air Fryer
Although you can cook many foods without preheating, certain foods tend to benefit more from starting in a hot cooking chamber.
The main reason is that these foods often need strong surface heat to develop browning and crispness before they become overcooked internally.
Frozen French Fries
Frozen French fries are one of the easiest examples of when preheating can be useful.
Starting with a hot air fryer allows the surface of the fries to begin cooking immediately. This can help develop a crisp outside while the inside remains soft.
However, preheating isn’t the only factor that determines whether your fries become crispy.
Don’t overload the basket. If the fries are packed together, moisture has a harder time escaping, and the fries can steam instead of crisp.
For a better result, spread the fries into a relatively even layer and shake the basket during cooking if the package or recipe recommends it.
Example
If the package says to cook the fries at 400°F for 15 minutes, you can preheat the air fryer to 400°F for a few minutes, add the fries, and then begin the 15-minute cooking period.
You may still need to adjust the time depending on the thickness of the fries and your particular air fryer.
Chicken Wings
Chicken wings are another food where preheating can be useful.
A hot cooking chamber helps the skin begin rendering and browning quickly. Combined with proper airflow and an appropriate cooking temperature, this can help produce a crisp exterior.
However, don’t assume that simply preheating will guarantee crispy wings.
The wings should have enough space around them for hot air to circulate. If you pack them tightly together, moisture can accumulate and soften the skin.
Drying the surface of the wings before cooking can also help because excess surface moisture works against browning.
Chicken Nuggets and Breaded Chicken
Breaded foods often benefit from a hot start because their coating can begin crisping as soon as the food enters the air fryer.
This can be particularly helpful with frozen chicken nuggets, tenders, and similar foods.
Follow the package instructions for temperature and cooking time rather than assuming every breaded product should be cooked at 400°F.
Some coatings contain ingredients that brown quickly, so using too high a temperature can make the outside dark before the center is hot.
Frozen Snacks
Frozen spring rolls, mozzarella sticks, onion rings, and other frozen appetizers can also benefit from preheating.
These foods often have a relatively short cooking time, so starting in a hot appliance can help the outer coating crisp before the inside becomes too dry.
As always, follow the cooking instructions on the package. Frozen products can vary considerably in size, coating, and filling.
Roasted Vegetables
Preheating can also be useful for vegetables when you’re aiming for browned edges and a slightly crisp exterior.
Vegetables such as broccoli, cauliflower, Brussels sprouts, zucchini, and bell peppers can develop better browning when exposed to sufficient heat.
However, avoid filling the basket so heavily that the vegetables sit on top of one another. A crowded basket traps moisture and can leave you with soft vegetables instead of nicely roasted edges.
Fish Fillets
Some fish recipes benefit from preheating because the hot air can begin browning the exterior quickly.
Fish is also relatively delicate, though, so temperature and cooking time matter.
If you use too much heat or cook the fish for too long, the outside can become dry before the center is ready.
For this reason, follow the recipe carefully and use the recommended temperature rather than simply choosing the highest air fryer setting.
Foods That Usually Don’t Require Preheating
Preheating isn’t automatically necessary for foods that require longer cooking periods.
For example, if you’re cooking a large piece of food for 25–30 minutes, the air fryer will spend much of that time at or near its operating temperature anyway.
In these situations, the few minutes saved by skipping preheating may be more valuable than the potential improvement in browning.
Reheating is another situation where you may choose not to preheat.
If you’re warming leftover chicken, pizza, vegetables, or another prepared food, you may be perfectly happy with the result from a cold start.
That said, reheating goals vary. If you want particularly crispy pizza crust or crunchy fried food, preheating can still be useful.
Cold-Start Cooking Isn’t Wrong
Some people assume that if they don’t preheat, they’re using their air fryer incorrectly.
That’s not true.
Air fryers are designed to heat while they cook. Whether you should preheat depends on the recipe and the appliance.
If your food consistently turns out well without preheating, there’s no need to add an extra step simply because someone else recommends it.
What matters most is achieving the texture and doneness you want.
How to Know When an Air Fryer Is Preheated
Knowing when your air fryer is ready depends on the type of controls it uses.
Some models make this obvious, while others require you to rely on a recommended heating period.
Air Fryer With a Preheat Indicator
Many digital air fryers provide some kind of indication that the appliance has reached its target temperature.
This could be:
- A message on the display
- A light indicator
- A beep
- A change in the cooking program
- An automatic transition into the cooking stage
If your appliance provides a preheat notification, use that as your main guide.
Air Fryer With a Dedicated Preheat Button
Some models include a specific preheat setting.
This can make the process easier because the air fryer manages the heating cycle for you.
Simply select the appropriate preheat function and follow the instructions shown on the display.
The exact process varies by model, so don’t assume that every preheat button works in exactly the same way.
Air Fryer Without a Preheat Function
If your appliance doesn’t have a dedicated preheat feature, you can use the manual method discussed earlier.
Set the cooking temperature, run the air fryer empty for a few minutes, and then add your food.
For many basket-style models, 3–5 minutes is a useful general starting point, but the manufacturer’s instructions should take priority.
Air Fryer Preheating Tips for Better Cooking Results
Knowing how to preheat an air fryer is only part of getting good results. How you arrange and cook the food afterward matters just as much.
Follow the Recipe Temperature
Don’t change the temperature simply because another recipe uses a different setting.
Different foods respond differently to heat. A thin frozen snack may need a different temperature from a thick piece of chicken.
Use the recipe’s recommended temperature as your starting point and make adjustments only when you understand why you’re making them.
Don’t Preheat for Longer Than Necessary
Longer preheating isn’t automatically better.
If your air fryer reaches the required temperature within a few minutes, there’s little benefit in letting it continue heating empty for another 10 minutes.
A short preheat is usually enough for many basket-style models.
Avoid Overcrowding
Good airflow is essential for air frying.
When too much food is packed into the basket, hot air can’t circulate effectively around every piece. The result can be uneven browning, longer cooking times, and softer food.
If you’re cooking a large quantity, working in batches may give you a much better result.
Keep the Air Vents Clear
Your air fryer needs proper ventilation to operate correctly.
Don’t place the appliance directly against a wall or cover its vents while it is running.
Adequate airflow isn’t only important for safety; it also helps the appliance maintain its intended cooking performance.
Shake or Turn Food When Necessary
Preheating doesn’t eliminate the need to check your food during cooking.
Some foods benefit from shaking the basket halfway through. Others may need to be turned or rearranged.
For example, shaking frozen fries can help expose different surfaces to the circulating hot air, resulting in more even browning.
Check Your Air Fryer’s Instructions
General guidelines are useful when you don’t know where to start, but your owner’s manual is the best source for your particular model.
A manufacturer’s recommendations may account for the appliance’s heating system, basket design, cooking programs, and safety requirements.
Frequently Asked Questions
How long should you preheat an air fryer?
Many basket-style air fryers take around 3–5 minutes to preheat, although the exact time varies by model. Smaller appliances may heat faster, while larger air fryer ovens can take longer.
Do all air fryers need preheating?
No. Some air fryers can cook effectively without preheating. Whether you need to preheat depends on the recipe, appliance, and food you’re preparing.
What temperature should I preheat my air fryer?
Use the temperature specified by your recipe. Common air fryer temperatures include 350°F, 375°F, and 400°F, but the correct temperature depends on the food.
Can you preheat an air fryer empty?
Yes. Running an air fryer empty for a short period is the normal way to preheat many models. However, always follow the instructions for your particular appliance.
Can you put food in an air fryer while it is preheating?
You can physically put food inside, but if a recipe specifically calls for preheating, it’s better to wait until the appliance reaches the recommended temperature before adding the food. This keeps the cooking process closer to the recipe’s intended method.
Conclusion: Should You Preheat Your Air Fryer?
So, should you preheat an air fryer?
The answer is: sometimes, but not always.
Preheating is particularly useful for foods that need a quick start, crisp exterior, or good browning. Frozen fries, chicken wings, breaded foods, and some roasted vegetables can benefit from entering an already-hot cooking chamber.
For longer cooking recipes or certain reheating tasks, however, preheating may not make enough difference to justify the extra few minutes.
If your recipe calls for preheating, the process is simple. Set your air fryer to the recommended cooking temperature and let it heat for about 3–5 minutes in many basket-style models. Then add your food and begin the cooking cycle.
If your air fryer has a dedicated preheat function, use it. If it doesn’t, you can usually preheat it manually.
Most importantly, don’t treat preheating as a rule that must be followed before every meal. Use it when it improves the type of food you’re cooking, and skip it when it doesn’t provide a meaningful advantage.
A good air fryer result ultimately comes from several things working together: the right temperature, appropriate cooking time, good airflow, sensible food portions, and proper preparation. Preheating can help with that process, but it is only one piece of the puzzle.