This story is part of Home Tips, CNET's collection of practical advice for getting the most out of your home, inside and out.
There are plenty of reasons to love an air fryer, and with energy costs much higher than normal, you can add saving some money to the list. Air fryers use less energy to run than big ovens and they take less time to cook food. That all means a lower energy bill at the end of the month if you opt for the air fryer in place of the fullsized oven on a regular basis.
If you're wondering exactly how much cheaper it is to use an air fryer, I did the math.
The difference is about 50% less total energy used, and that's before factoring in the shorter total time needed for most food when cooked in an air fryer versus the big oven. Here's how we got that figure and a breakdown of how much you can save using your air fryer instead of the oven.
An air fryer uses less energy than a big oven. Here's how much
The answer won't be the same for everyone since energy costs vary by state in the US. Oven efficiency also varies and newer models tend to use less gas or electricity. For this exercise, we'll use some averages and estimates to assess how much you can potentially save if you fire up the air fryer instead of the oven. Oh, and saving money on energy is just one of many reasons we think air fryers are a worthwhile investment. More on that in a bit.
Cost of oven versus air fryer

Gas oven  Electric oven  Air fryer 

Cost per hour of cooking  40 cents  52 cents  25 cents 
So how did we get these numbers? The easiest way to figure out how much an air fryer might save you versus a big oven was to calculate the wattage pulled per hour versus how much an electric stove would use. The same goes for a gas oven, although for that you need to figure out the amount of natural gas used for a stove as well as the cost of natural gas in your state.
Don't worry. We did the hard part.
Energy cost of gas vs. electric ovens
Depending on what type of oven you have, gas or electric, operating cost will vary since natural gas prices and electricity costs vary rather dramatically by state and service provider. While both use a similar amount of energy and have somewhat similar upfront costs, if you own an older oven there's a good chance it's less energyefficient than a newer model.
How much energy does a gas oven use?
To calculate the operating cost of your gas stove and oven, we take the energy rating of the oven in Btu and divide it by 100,000. Multiply the result by the cost per therm of natural gas in your state, which varies greatly, then multiply by the number of hours the oven is used. You should be able to find the energy rating of your oven online if you know the model name or number. It is likely somewhere on the unit itself. If you still have the owner's manual, you can find the energy rating there, measured in Btu.
To calculate the operating cost of an 18,000Btu oven, you'll divide 18,000 by 100,000, giving you 0.18. We'll also need to find the average price per therm of natural gas in your state. This chart has the most recent prices via the US Energy Information Administration. Note that this chart is listed in dollars per thousand cubic feet, so you'll need to divide by 10. For instance, if the chart price is $23, you'll use $2.30 to calculate the cost.
In New York where I live, the price is currently $2.20 per therm (about average for the US). Next, we'll multiply that price for a therm by the number you calculated in the last step (0.18 in this example) to get the operating cost per hour of using your gas oven.
For me, it would cost about 40 cents per hour to run an 18,000Btu oven. If I were to run an oven for 1 hour per day, it would cost $146 per year. In some states (including Georgia, Florida and Ohio), natural gas is about 30% higher than the national average. In Hawaii, it's more than double.
How much energy does an electric oven use?
To determine electric stove consumption you'll calculate the wattage pulled per hour of cooking. Most electric ovens draw around 3,000 watts, depending on the temperature. Once you find the wattage of your oven via the appliance tag, owner's manual or an online product listing, multiply that by the number of hours you use the oven each day (we'll use 1 hour for this calculation), then divide by 1,000 watts to find the kilowatthours (kWh) of electricity used.
Next, find the average price per kWh of electricity in your state. For that, you can consult this chart that has the 2020 prices listed in cents per kWh. The prices for 2021 won't be released until December 2022, but if you do some web searching, you should be able to find the latest figures. Multiply that amount by the number you just calculated (3 kWh in this example) to determine your operating cost per day.
Working with New York's current electricity rate of 17 cents per kWh, a 3,000watt oven would cost about 51 cents per hour when run at high heat. If I used my oven for roughly 1 hour per day for one year that would equal roughly $182 per year. This cost doesn't include energy used by the range and burners.
How much energy does an air fryer use?
Air fryers are electric appliances, so we can use the same methodology as above to find the operating cost. The wattage for air fryers varies and larger models will use more energy, but a standard 4quart fryer such as this Ninja (our toprated model) uses about 1,500 watts.
Considering that's exactly half the wattage pull of the average fullsize oven from our stove calculation, we can project that the air fryer will use roughly half as much electricity to operate.
Using New York's electricity prices, we safely say a standard 4quart air fryer will cost about 25 cents per hour to run. That's 50% more energyefficient than the average fullsize electric oven and about 35% more efficient than the average gas oven (calculated with New York state's average energy costs).
Exactly how much money can you save using an air fryer?
 Cost of 300 hours of cooking with a gas oven on high heat: $153
 Cost of 300 hours of cooking with an electric oven on high heat: $120
 Cost of 150 hours of cooking with an air fryer: $39
These numbers are a rough estimate, of course. The numbers will vary based on your state's energy cost, how much cooking you do in the course of a year, what temperature you're cooking at and the type and size of oven you're using.
But that's only half of the equation. Air fryers are even more energy and costefficient than these raw numbers illustrate.
Here's why…
Air fryers cook much faster than big ovens
Because of the smaller cooking chamber and superconvection (intense fan blowing heat into food), air fryers generally cook foods much faster than your traditional gas or electric stove. Often in about half the time it takes to make a similar recipe in a full oven.
Below are some examples of cooking times for air fryers versus stoves. The cooking website Taste of Home compiled a list of average air fryer cooking times for popular foods. We compared those with standard cooking times pulled from Food Network recipes for ovenbaked or ovenroasted versions of those foods.
Cooking times: Air fryer versus oven
Food  Temperature  Air fryer cooking time (mins)  Oven cooking time with preheat (mins) 

Chicken thighs  400 F  2025  40 
Chicken wings  375 F  1012  40 
Chicken breast  375 F  23  30 
Salmon  400 F  57  1215 
Brussels sprouts  350 F  1518  40 
Bacon  400 F  510  20 
Cauliflower  400 F  1012  20 
French fries (from scratch)  400 F  1020  4045 
French fries (frozen)  400 F  68  1820 
Air fryers don't need to preheat either
Don't forget most air fryers also don't require any preheating time, making them even more efficient. The average fullsize oven takes at least 10 minutes to preheat but usually more like 12 to 15 minutes. Preheating requires as much (or more) energy as actual cooking. In the chart above, I added a modest 10 minutes to each of the oven cooking times to account for preheating.
If you consider that an air fryer does the work of an oven in half the time (even faster when you include preheat time), 300 hours of cooking in a standard oven over the course of a year would likely take fewer than 150 hours when done in an air fryer.
Read more: The 5 Best Air Fryers for 2022
Before we get carried away…
An air fryer is not a poundforpound replacement of an oven. There are plenty of foods that you probably won't want to cook in an air fryer. Others just plain won't fit in a standard air fryer. Certain models are spacious enough to cook a whole chicken, but for larger roasts, a Thanksgiving turkey or that Sunday lasagna  not to mention most baking projects  your air fryer may not be the best option.
That said, for someone who doesn't bake much or cook whole turkeys and racks of lamb on the regular, an air fryer can shoulder a whole lot of the cooking that your more expensive, less energyefficient oven has been handling.
The best reason to buy an air fryer isn't even the savings
An air fryer won't cook everything better than your oven, but there are some air fryer foods that a big oven can't touch. Because air fryers cook so fast and at high temps, foods like chicken wings, french fries and most frozen apps will get crispy on the outside without drying out on the inside the way they might when stuck in the large oven for 30 or 40 minutes.
As mentioned, air fryers don't require any preheating time either. Most of the models I've used are also extremely simple to operate, safe even for children to use and easy to clean.
Bonus: Air fryers are pretty cheap
You can pay in the hundreds for an air fryer but many of the best ones we tested are less than that. You can pick up our favorite air fryer, the Ninja 4quart, for $100, or cheaper if you find it on sale. And our favorite budget air fryer, the Gourmia 4quart, can be found for just $60.
And if you're curious, Instant Pots and multicookers also use significantly less energy than an oven. If you have an Instant Pot but no air fryer, you can snag the Mealthy airfrying lid for $85 or Instant Pot's lid attachment for Instant Pot's lid for $50.
All about air fryers
 A Guide to Air Fryers: Everything You Need to Know Before You Buy
 The 5 Best Air Fryers for 2022
 Best Countertop Oven and Air Fryer in 2022
 Air Frying vs. Baking in the Oven: Which Cooking Method Is Best?
 Shopping for an Air Fryer? This Is the Best One to Buy
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