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How to Preheat a Ninja Air Fryer? [SIMPLE STEPS]

Ninja Air fryers are manufactured on the convection phenomenon of heat transfer, designed with a fan source and a heater, that enables hot air circulation around the food for processing.

In a Ninja Air fryer, the rise in temperature facilitates the removal of moisture from the raw food and turns it into a crispy, golden final product.

Food processing in a ninja air fryer requires certain steps that assure quality, tenderness, and mouth-watering taste in the meals.

Pre-heating the Ninja air fryer is one of the critical steps helpful in achieving the desired air frying results.

What is meant by Preheating the Ninja Air Fryer?

‘Preheating the Ninja air fryer’ as the name suggests is elevating the internal temperature of the air fryer’s food section to a recommended value for a set of reasons.

This ‘Preheating’ terminology is commonly used by experts to emphasize on the readiness of the air fryer to take up the raw/pre-cooked meals

Why do I preheat a Ninja Air Fryer?

Ninja Air fryers do not require any extensive use of unhealthy cooking oils to process food rather it utilizes the air and a few drops of oil or butter.

Preheating the Ninja air fryer is required for certain key reasons that we recommend to the users in order to perceive the importance of this step.

Removal of Moisture from the Ninja Air Fryer

It is highly recommended to clean the Ninja air fryer every time the device is used and has to be placed back on the shelf or the designated location.

However multiple users clean the air fryer just before proceeding with the meal preparation. With the fact that the basket has certain leftovers stuck to it, washing the internals is the only solution.

Once the internals are thoroughly cleaned, the device has a portion of water content left inside. In order to remove the residual moisture, the Ninja Air Fryer is recommended to go through the Preheating step.

This preheating of the Ninja Air Fryer varies from model to model based on the temperature and time required for the process.

Experts from recommend preheating small Ninja air fryers 2-4 Quarts at 180°C for 03 minutes. For larger Ninja Air fryers 4.5 to 08 Quarts, we recommend to pre-heat the air fryers at 200°C from 03-05 minutes (keeping in view the amount of moisture present).

Elevating the temperature of the air fryer

Air fryers are used in cold regions like Canada, UK, Ireland, Alaska (USA) etc where the outside temperatures are below 0C.

As a matter of fact, the air fryer temperature is low that needs to be elevated in order to bring it close to the working temperatures.

A Ninja air fryer’s heater has a limited capability of heat transfer based on the design/manufacturer requirement. If we split the air fryer heating action into 02 steps it would greatly reduce the heat load on the air fryer.

An air fryer preheating without the actual heat load (raw food/pre-cooked food) will ideally require only 03~05 minutes. However, if you combine both the load and the air fryer’s internal low temp, the heat duty requirement would double.

This requires exponentially more time and energy to remove the moisture. Therefore experts & the manufacturer itself recommend preheating the device for better results.

Uniformity in temperature distribution

Temperature distribution inside the air fryer should remain uniform. Placing the raw food in the basket requires special care to ensure equal gaps are maintained, and to facilitate the flow of hot air.

However, it is practically impossible to achieve uniformity in temperature across the raw food because of the difference in size and orientation of the food chunks.

Therefore the air fryer is preheated to a designated temperature for a set timeframe to allow internals to reach a uniformity before the actual food can be loaded and processed for air frying.

Removal of bacteria & residual micro-organisms

Ninja air fryers have a certain set of food grains left over at different localities inside the basket of the air fryer. In order to ensure the device is sterilized & cleansed from a major source of bacteria, it is recommended to preheat the Ninja air fryer.

This may not be required if the air fryer internals are separately cleaned and dried with a clean source of air or cloth.

To get quicker air frying results

At times, the user wants to reheat a meal for consumption. If he places the meal without preheating the air fryer, it will take substantially greater time. In that timeframe the chances of food losing its crispy appearance increases.

Instead of doing good to the meal, it softens it while making it difficult for the consumer to intake the processed meal.

Therefore it is highly recommended to preheat the air fryer if you wish to reheat a certain meal for quick consumption.

When the food is frozen

Air fryers are ideal for frozen foods, however again it is strongly recommended to preheat the air fryer for better results.

Frozen food needs to be defrosted & then reheated to elevate the temperature and remove moisture.

In order to reduce the heat load on the air fryer, In step 01: it has to separately elevate the temperature of the internals. While in Step 02: it is accompanied by the defrosting and the actual airfrying

This fact reduces the overall heat load and ensures a quick temp rise, defrosting, and moisture removal for the food being processed.

Simple Preheating steps to a Ninja air

A Ninja air Fryer works on the principle of heat transfer with air as the medium or carrier source of heat energy.

The heated air from the source is forced to circulate around the food, which raises the overall temperature more uniformly than other conventional methods of deep-frying.

STEP 01: Clean the air fryer thoroughly

STEP 02: Assemble the air fryer components

STEP 03: Set the desired preheating temperature on the digital display

STEP 04: Set the Preheating time & Press <OK>


  • Never preheat the air fryer for too long
  • Ensure that the vent is not chocked
  • Ensure the air fryer is kept at a well-ventilated location
  • Make sure the temperature and time duration are matching the manual provided guideline for preheating
  • Ensure to make use of the preheating button/knob if provided separately
  • Don’t keep any combustible volatile material inside the air fryer during the preheating state
  • Ensure that no grains were left behind before proceeding for the preheating step

Research shows that the food cooked in an air fryer is more nutritious and healthy, keeping in view certain facts that will add to your knowledge;

  • Calorie intake in air-fried food is 30-40% lower than the conventional deep-fried food
  • An air-fried food is uniformly heated and doesn’t eliminate essential nutrients from the food source during food preparation
  • Air-fried cooking is digitally more advanced & a modern technique. The user has substantially more control over the food processing temperatures & the period it is subjected to inside the air fryer
  • Air fryers do not require oil and therefore, additional fat intake is ideally cut down

Why air frying?

Air frying is highly preferred over the nasty deep frying methods with a very positive response from the users. Surveys show that 75% of health-cautious individuals choose to process their food with air fryers.

Air frying is unique because it only needs a single teaspoon of oil to cook food for a family of 04 individuals.

Air Frying Steps: Summarized

A Ninja air fryer is extremely easy to operate and requires the following Simple steps for food processing.






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