We crunch the numbers on total cost of ownership—including energy bills—to settle the air fryer vs convection oven debate for good.
You’ve finally decided to break up with your deep fryer. But as you scroll through kitchen gadgets, a question pops up: should you buy an air fryer or a convection oven? Both promise crispy food with less oil, but which one actually saves you money in the long run? Most articles compare cooking quality, but we’re going deeper—comparing purchase price, energy consumption, and real-world usage costs. Let’s settle this once and for all.
Why This List Matters
Picture this: It’s Tuesday night, you’re starving, and you want to make frozen chicken wings. Your friend swears by their air fryer, but your mom insists a convection oven is the smarter investment. You pull out your calculator, but where do you even start? The truth is, the cheaper upfront option isn’t always the cheapest over time. Energy rates, cooking efficiency, and how often you cook all factor into total cost of ownership. That’s exactly what we’re breaking down here.
Item 1 Analysis: The Air Fryer – Small but Mighty
Let’s start with the popular choice: the Cosori Pro II Air Fryer. It’s a 5.8-quart model that typically costs around $90–$110. It pulls 1500 watts and cooks a batch of wings in about 20 minutes. At the average U.S. electricity rate of 12 cents per kWh, that’s roughly 6 cents per cooking session. But here’s the catch: its basket holds only about 2–3 servings, so if you’re feeding a family, you’ll need multiple batches. Over a year of daily use (say 300 uses), that’s $18 in energy—but you’ll spend more time cooking.
Who it’s for: Singles, couples, or anyone who cooks small portions and values speed. Who it’s not for: Large families or anyone who regularly cooks whole chickens or full sheet pans.
Item 2 Analysis: The Convection Oven – Space Hog or Money Saver?
Now let’s look at the Breville Smart Oven Air Fryer Pro. Retail price is around $400—ouch. It’s a beast: 1800 watts, but it can fit a 14-pound turkey or a full 12-inch pizza. A typical cooking session (including preheat) runs 30–40 minutes, using about 1.0–1.2 kWh. That’s 12–14 cents per use. Annual energy cost for daily use: $36–$42. But you can cook an entire meal in one go, saving time and reducing the need to run multiple batches.
Who it’s for: Dedicated home cooks who bake, roast, and air fry frequently. It replaces a toaster, toaster oven, and air fryer. Who it’s not for: Budget shoppers who only air fry occasionally.
Item 3+ Analysis: Mid-Range and Budget Alternatives
There are plenty of options between these extremes. The Ninja Foodi Air Fryer (model AF300, ~$130) offers a dual-basket design—two 5-quart baskets for around $130. Its energy use is similar to the Cosori, but you can cook two different foods simultaneously, saving time and energy if you’d normally do two batches. Annual energy cost: about $18 for 300 uses, but you’ll use it more because it’s versatile.
On the convection oven side, the Cuisinart TOB-260N1 is a solid mid-range option at around $200. It offers 1800 watts and a spacious interior, but its energy efficiency is comparable to the Breville. Over a year, you’re looking at $30–$40 in electricity—slightly less than the Breville because its cooking is a bit faster.
Finally, don’t ignore the Best Time to Buy Breville Smart Oven Air Fryer Pro (2025 Guide) if you’re considering that premium model. It reveals that prices drop significantly during Black Friday and Prime Day, potentially saving you $100–$150.
Side-by-Side Comparison
| Product | Upfront Cost | Wattage | Avg. Cook Time | kWh per Use | Energy Cost per Use* | Annual Energy Cost (300 uses) |
|---|---|---|---|---|---|---|
| Cosori Pro II | $100 | 1500 W | 20 min | 0.5 | $0.06 | $18 |
| Ninja Foodi AF300 | $130 | 1500 W | 22 min | 0.55 | $0.07 | $21 |
| Cuisinart TOB-260N1 | $200 | 1800 W | 35 min | 1.05 | $0.13 | $39 |
| Breville Smart Oven | $400 | 1800 W | 40 min | 1.2 | $0.14 | $42 |
| *Typical oven (electric) | $0.25–$0.50 per use |
*At $0.12/kWh.
But energy isn’t the whole picture. Consider replacement frequency: air fryers tend to last 3–5 years, while quality convection ovens can last 10+. The Breville’s higher upfront cost spreads over more years.
How to Choose Yours
Ask yourself three questions:
- How many people do you cook for? If 1–2, an air fryer is plenty. If 3+, consider a convection oven or a dual-basket air fryer like the Ninja Foodi.
- What’s your budget? Under $150? Stick with an air fryer. Willing to invest $200+? A convection oven gives more flexibility.
- How often do you cook? Daily users will recoup an oven’s premium faster than occasional users.
Also, consider your kitchen’s electrical circuit. Air fryers and convection ovens draw 1500–1800 watts—don’t plug them into a circuit with other high-draw appliances.
Bottom Line
If you’re cooking for one or two and want the cheapest total cost, buy an air fryer like the Cosori Pro II. You’ll save upfront and on energy, even if you use it daily. If you have a family or love to cook variety, invest in a convection oven like the Breville Smart Oven Air Fryer Pro. Its higher price pays off in versatility and longevity—and snagging it on sale via our buying guide makes the math even sweeter.
Ultimately, the money-saver is the one you’ll use. Don’t let a cheap gadget collect dust. Choose the appliance that fits your lifestyle, and you’ll save both cash and calories.
Frequently Asked Questions
Which is cheaper to run: air fryer or convection oven?
Per use, air fryers cost about 6–7 cents versus 12–14 cents for convection ovens at average electricity rates. However, convection ovens can cook larger portions, so cost per serving may be similar if you run multiple air fryer batches. Your total cost depends on usage patterns and family size.
How long do air fryers last compared to convection ovens?
Air fryers typically last 3–5 years due to simpler construction and non-replaceable heating elements. High-end convection ovens like Breville can last 10+ years, making them more cost-effective long-term despite higher upfront cost. Budget convection ovens have shorter lifespans, around 5–7 years.
Do convection ovens use more electricity than air fryers?
Yes, convection ovens use 1.0–1.2 kWh per session compared to 0.5–0.55 kWh for air fryers. At $0.12/kWh, that's $0.12–$0.14 vs $0.06–$0.07 per use. However, convection ovens replace multiple appliances, potentially reducing overall kitchen energy consumption for those who bake and roast frequently.
Is an air fryer or convection oven better for a family of 4?
For a family of 4, a convection oven is more efficient because you can cook larger batches in one go, saving time and energy. Running an air fryer multiple times for the same meal increases overall cost and prep time. A convection oven also offers more cooking versatility for whole meals.