Short Answer:

Yes, preheating the air fryer for frozen foods is recommended. Preheating ensures the appliance reaches the proper temperature before cooking, which helps frozen items cook evenly and develop a crispy exterior.

Skipping preheating may result in uneven cooking, longer cooking times, or soggy textures. A brief preheat of 2–3 minutes allows hot air to circulate immediately, producing golden, crispy, and fully cooked frozen foods efficiently.

Detailed Explanation:

Preheating the Air Fryer for Frozen Foods

Purpose of Preheating
Preheating warms the air fryer to the desired cooking temperature before adding frozen food. This ensures that the food is exposed to consistent heat from the start, promoting even cooking. Preheating helps create a crispy outer layer while cooking the interior thoroughly.

Effects on Frozen Foods
Frozen foods, such as fries, nuggets, spring rolls, or vegetables, benefit from preheating because it reduces the chance of sogginess. Without preheating, the initial cold basket may slow down cooking, causing the exterior to cook unevenly and the interior to remain undercooked. Preheating improves texture, browning, and crispiness.

Recommended Preheat Time
Most air fryers require 2–3 minutes to preheat before cooking frozen foods. Some models have a preheat function, while others may need to run empty at the desired temperature briefly. This short period ensures consistent heat throughout the basket for efficient cooking.

Temperature and Cooking Time
After preheating, add frozen food and cook at the recommended temperature, usually 180–200°C (360–400°F). Preheating may slightly reduce total cooking time because the food starts cooking immediately at the correct temperature. Always monitor frozen food to prevent overcooking or burning.

Additional Benefits

• Enhances crispiness for breaded or coated items.
• Ensures even browning on all sides.
• Reduces the risk of cold or undercooked spots.
• Helps retain texture for vegetables and maintains filling integrity in stuffed snacks.

Optional Tips

• Lightly spray frozen foods with oil for better browning.
• Shake or flip frozen foods halfway through cooking to improve even crisping.
• For batch cooking, preheat between batches for consistent results.

Conclusion:

Preheating the air fryer for frozen foods is recommended to ensure even cooking, proper browning, and crispiness. A brief 2–3 minute preheat allows hot air to circulate immediately, reducing cooking time and preventing soggy or undercooked areas. Following this step helps frozen fries, nuggets, spring rolls, and vegetables achieve optimal texture and flavor.