Every time the electricity bill arrives, we look at it with more attention than before. It is no longer enough to turn off the lights or unplug the cell phone charger: now cooking has also become an energy decision. Between hobs, ovens and air fryers, the kitchen has become the new battleground for savings. In recent years, the air fryer has come to staypromising lighter and faster meals. But the question remains in the air: does it consume more or less than the traditional oven?
The modern dilemma. They may both cook with hot air, but their way of doing it makes the difference. The air fryer, Endesa explainsit works more like a miniature oven than a classic fryer. Its trick is to circulate hot air at high speed within a small compartment, achieving fast and uniform cooking.
The traditional oven, for its part, heats a much larger space and needs to maintain the temperature for longer.
And that’s the crux of the matter: the larger the volume, the more energy is expended. According to Naturgy, Although the oven is not the device that consumes the most electricity per year – barely 4% of the total – its specific power is one of the highest, and this can be noticed when the light goes up.
Data and euros on the table. The power figures help to understand it better. An average air fryer has a power of between 1,000 and 1,800 watts, which is equivalent to a consumption of 0.8 to 1.5 kilowatt hours (kWh) per time of use, depending on the model and time. Meanwhile, a conventional oven has a higher power of between 2,000 and 5,000 watts, and with an average consumption of 1 to 1.5 kWh per use, although it may be higher for long cooking times or high temperatures.
To understand it better, it is worth looking at how much it costs for our pocket. According to TotalEnergiesusing an air fryer for half an hour costs between 11 and 23 cents, depending on the model and the electricity rate. On the other hand, an electric oven can double that amount, especially if used at high temperatures or for more than an hour. Cooking a kilo and a half chicken at 220°C for just over an hour, for example, can cost around 30 or 40 cents. depending on the time zone. And although it may seem like little, consumption multiplies when it is used frequently or long preheats are performed. In addition, the oven requires preheating – between 10 and 15 minutes – and loses up to 25% of heat each time the door is opened, according to the Organization of Consumers and Users (OCU). Small gestures that increase consumption without us realizing it.
The CNMC remember that the real cost It depends on the price of the kilowatt hour (kWh) at any given time. In 2025, the average domestic price in Spain is around €0.14/kWh, although it varies significantly between peak and off-peak hours. Therefore, rather than focusing only on the appliance, it is advisable to cook in the cheapest sections or take advantage of the residual heat, small gestures that can reduce final expenditure by up to 20%.
Does size matter? That’s it the secret of the air fryer: a compact compartment that concentrates heat and reduces cooking time. The hermetic design and constant circulation of hot air allow it to reach temperatures of up to 200 °C in just a few minutes, which shortens times and prevents heat leaks. Therefore, for small portions or individual dishes, the air fryer wins by a landslide in efficiency.
Of course, the most modern ovens have also learned to save. Those with energy class A or B and convection models with internal fan can consume up to 60% less than the old ones, and if their full capacity is used – cooking several dishes at the same time or using duo trays – the cost per serving can be very competitive.
Beyond appliances. Efficiency not only depends on the appliance, but small gestures – such as not opening the oven while cooking, taking advantage of residual heat or planning several recipes at the same time – can reduce energy consumption. up to 30% annually.
Unplugging small appliances when not in use avoids “phantom consumption”, and choosing appliances with an A or B energy label is an investment that pays for itself in a few months. In the words of the CNMCadapting use to the most economical schedules can mean savings of between 9% and 15% on the annual bill.
The future is served. The air fryer has democratized energy efficiency in the kitchen. It is compact, clean, fast and economical. But the oven, far from disappearing, retains its throne as a versatile and robust tool for lovers of traditional cuisine. Ultimately, the savings do not depend so much on the device as on the use we make of it.
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