Air Fryer vs. Oven: Which Uses Less Energy?

An air fryer uses much less electricity than an oven. That part of the pitch is true. The part it leaves out is the dollar figure. In an air fryer vs oven comparison on an average US electric bill, the gap comes to roughly 11 cents a dish. Over a year that adds up to something, but not much, and it's a weak reason to buy a new appliance.  

Time is the better reason. If you cook small meals and want them sooner, an air fryer earns its counter space. If what you want is a lower bill, it mostly won't deliver.  

What an air fryer vs oven test actually measured  

Most pages on this question call the air fryer "more efficient" and leave it there. The British consumer group Which? metered it. In results published October 1, 2026, it cooked four foods in a basket air fryer (a Morphy Richards Health Fryer) and in a built-in electric oven (a Bosch Serie 2). The times and energy figures include preheating.  

Across the four, the air fryer used between a third and a half of the oven's electricity.  

What the saving is worth on a US bill  

At the Energy Information Administration's forecast of 18.2 cents per kilowatt-hour for the average US home this year, fries save 10.5 cents, chicken 11.2, potato 12.6 and cake 8.9. Call it a dime a swap. Over a year, five nights a week comes to about $28. Every night comes to about $39.  

Your own number will differ. The test oven was a British built-in model, and many US ranges have a bigger oven cavity. A bigger cavity likely takes more energy to heat, so the gap on a US electric range could be wider than these figures show.  

If your oven runs on gas, set these numbers aside. Which? compared two electric appliances, so its test can't tell you what you'd save. That covers a lot of kitchens: about 38% of US households cook with natural gas, according to the EIA's 2020 household survey.  

Where the air fryer earns its place  

Every dish in the Which? test came out of the air fryer first, preheat included. The fries were 10 minutes faster. The potato was 20 minutes faster, and the chicken and the cake were each 23 minutes faster.  

On a Tuesday night, 20 minutes off a baked potato is something you notice. Eleven cents on a bill you open once a month isn't.  

Buy one if you cook for one to three people most nights and like your food crisp. The 320 g batch of fries in the test was two to three portions, and that's the size of meal an air fryer is built for.  

Read More: Best Air Fryers of 2026: 10 Top Picks Compared  

When the oven is faster  

The speed lasts only while the food fits. Which? named capacity as the air fryer's main drawback. For fries, the manufacturer said to fill the basket only halfway, to a maximum of 500 g (about 1.1 lb).  

Feeding four, you'll probably pass that line. Say you need 640 g of fries, which is two of the test batches. Two air fryers run at 23 minutes each take 46 minutes, while the oven did its tray in 33. A fuller tray may slow the oven down a little, and Which? didn't measure that, so treat this as an estimate. On that estimate, the oven still gets dinner out first.  

The air fryer still uses less electricity over two batches, 0.57 kWh against the oven's 0.86. The oven's advantage here is time, the one thing the air fryer is sold on.  

Which? also found one case where the oven can win on cost. With a full roast dinner, your oven "may still be cheaper overall" because the space around the chicken can cook the sides. Put the vegetables on a sheet pan next to the roast and one preheat covers the whole meal.  

Who should skip the air fryer  

Skip it if the bill is your reason. Take the price of the model you're looking at, divide it by $28 to $39, and you have the number of years before it pays for itself in electricity. Skip it, too, if you usually cook for four or more, since you'll be running batches and the oven will often be faster.  

If you cook on gas, nothing in this test tells you what you'd save. Don't buy on a savings promise you can't check.  

If you cook small meals most nights and want them faster, an air fryer is worth it, and the numbers above are why. Browse our air fryers and choose by basket size for the number of people you actually feed.