Estimated reading time: 5 minutes

Jump to a section of this article

• What is an air fryer?
• Are air fryers cheap to run?
• How does an air fryer work?
• Do air fryers really fry food?
• How do air fryers cook faster?
• But are air fryers really a healthier option?
• How do air fryers make cooking easier?
• Final Thoughts

Despite their name, air fryers don't fry in the traditional sense, by cooking food which has been submerged in oil or fat.

Air fryers typically use a combination of thermal radiation (such as from a heating element in a grill) and convection (similar to a fan assisted oven).

Oil is used in cooking to improve the transfer of heat so that food cooks more effectively, similarly it also has a higher boiling point than water and so allows food to be cooked hotter and aids with the browning process (often a vital part of unlocking flavour and improving texture). 

Frying in the traditional sense is the process of transferring heat to food using hot oil. The negative health impacts of using oil are well known and understood but many of us continue to use oil because it has been the best (or only) way to cook certain foods properly. 

Air fryers more effectively circulate their hot air and cook food rapidly. This is aided by having perforated cooking baskets, which allow the hot air to pass through and around the food more efficiently again and again - this also helps to ensure that moisture is retained and food isn't dried out as much. 

Air fryers are often able to reach higher temperatures than conventional domestic electric ovens which can also allow them to speed up the cooking time for certain foods. This is especially true for foods which experience the Maillard reacting at hot temperatures; where they begin to brown. 

The rapid hot air circulation also creates a convection effect which can draw moisture away from the foods surface, similar to what can happen with traditional deep frying.

Air fryers do sometimes use oil in the cooking process, which is why the claims are often "little to no oil" or "less oil". Thanks to how air fryers don't require food to be submerged in fat or oil, they may be considered healthier than traditional frying.

Some foods require no oil at all and can still benefit from being cooked via air frying because the hot air is a substitute for adding oil or fat.

The health aspect also depends entirely on what food you put into them and portion size.

There are many considerations when looking for a healthy and balanced diet. Having less oil in foods and your diet may lead to fewer calories and less saturated fat. 

Another consideration is that air frying may help to reduce the formation of harmful compounds which can form during high-heat deep frying. 

It's important to remember that using an air fryer will not automatically make your food healthy. 

A lot of focus is put on the health benefits of air frying and the potential savings in money and energy. The smart technology is an often overlooked aspect and benefit of air firers.

Unlike traditional domestic ovens which often have a simple temperature and timer function, many air fryers come with pre-programmed intelligent cooking presets and modes which add another level of support and assistance when preparing certain foods. 

Some units allow for synchronised cooking of two very different foods which require different temperatures, times and patterns and yet the advanced electronic modes will ensure that they are ready to be served at the same finish time.

This blog has explored the fascinating world of air fryers, from their versatility and energy efficiency to the science behind their operation. We've learned that air fryers use a combination of thermal radiation and rapid convection, along with clever basket designs to cook food quickly and efficiently. This method allows them to achieve crispy results with significantly less oil than traditional deep frying, potentially making them a healthier option.

While air fryers offer various benefits, it's important to remember that they are just one tool in a healthy kitchen. Remember, the type of food you cook and the added ingredients still significantly impact its nutritional value.

Now the next time you and your friends are talking about the latest in kitchen technology, you can play the air fryer expert and tell them why air fryers are worth considering and how air fryers work.