Learn how to preheat an air fryer like an expert! A Food Scientist shares all, including common mistakes to avoid, and when preheating isn’t even necessary!

How to Preheat An Air Fryer (Step-By-Step)

Below are 2 sets of instructions, depending on whether the specific model of your appliance has a preheat function or not.

Easy Guide for Preheating:

1. Check the manufacturer’s instructions: Always refer to the manufacturer’s guidelines or user manual for specific preheating instructions tailored to your air fryer model. I know—for some of us, this is our worst nightmare, but it’s worth it.
2. Stable placement: Position it on a stable, heat-resistant surface with plenty of space around it for ventilation.
3. Plug in and power on: Connect your air fryer to a compatible power outlet and switch it on; let’s go!
4. Temperature and time setting: Use the control panel to set the desired temperature. Refer to recipes or general guidelines for recommended preheating temperatures, typically ranging between 350°F to 400°F (175°C to 200°C).
5. Allow time for preheating process: Let your air fryer preheat empty for approximately 3-5 minutes. If you like to line your air fryer basket with parchment paper for easy clean-up (see: everything to know for a clean air fryer), wait until after it is finished preheating. Without food to weigh it down, hot air may blow the parchment on to the elements and cause it to scorch or catch fire.
6. Monitor the progress: Monitor the digital display to ensure that the air fryer reaches the set preheating temperature. Some models make a signal or beep to indicate when preheating is done!
7. Add your food: Once preheated, carefully open the basket or tray and add your food in a single layer.
8. Start cooking: Close the air fryer basket or tray and set the cooking time according to your recipe or preferences. Monitor from time to time to ensure even cooking.

NOTE: A recipe’s cooking time starts from after the air fryer is preheated (which is why it should be preheated empty).

For an Air Fryer with a Preheat Function

Air fryers with a preheat function can be preheated with the touch of a button. Use the control panel to set the desired preheating temperature and duration.There may be a preheat button or specific preheat settings.

Add your food and start the recipe time from that point.

How Long to Preheat An Air Fryer For?

Preheating time ranges from 3 to 5 minutes, although it can vary slightly depending on the model and manufacturer’s instructions.

Preheating allows the air fryer to reach the desired cooking temperature before you add your food.

Always refer to the specific guidelines provided by your air fryer’s manufacturer for the recommended preheating time for your model.

Preheating Your Air Fryer Vs Skipping it

Do you even need to preheat your air fryer?

Well, that depends. There are times when its key to a great result and other times when its not really important.

Preheating an air fryer helps it reach the desired cooking temperature faster, which can lock in moisture by quickly forming a crust on the outside of foods.

It can reduce the time food spends in the fryer, preventing it from drying out.

Without preheating, food may cook unevenly, leading to a drier texture on the outer parts, especially for meats or items that need a crisp exterior while staying moist inside.

Here’s more:

When To Skip Preheating

Times I don’t bother:

1. For foods that don’t need to be crispy: If you’re just using your air fryer for cut down on cooking time.
   
2. Reheating leftovers: If you’re reheating small portions of other leftovers, you may choose to skip preheating.
   
   See: Reheating pizza in air fryer, reheating wings in air fryer
   
3. For foods that need longer cooking time: If you’re cooking hard, dense vegetables that may burn outside before being cooked inside (like cubes of butternut squash), preheating may not be necessary.
   
   These foods might cook more evenly without preheating the air fryer.

Common Mistakes When Preheating an Air Fryer

1. Preheating for Too Long: Over-preheating can cause the air fryer to become too hot, leading to burned food or uneven cooking. Stick to the 3-5 minute window unless your recipe states otherwise.
2. Lining the Basket During Preheat: Adding parchment paper or liners before preheating is a mistake. Without the weight of food, the hot air can blow the parchment into the heating element, potentially causing it to burn.
3. Not Adjusting for Thicker Foods: Preheating at too high of a temperature for thick foods may cause the outside to cook too quickly, leaving the inside undercooked. Adjust the cooking time and temperature accordingly after preheating.

Avoiding these mistakes will help you get better, more consistent results when using your air fryer.

Next Reading: How to Clean an Air Fryer