Air fryer vs deep fryer: how much oil, fat and money you actually save
Ask anyone who has switched to an air fryer what changed and you get the same answer: less oil, less mess, less time. But how much less? We cooked the same three family favourites — fries, chicken wings and breaded chicken — in a deep fryer and in the RADOCO RD-1012W 7.3 L air fryer and kept score.
1. Oil: 2.5 litres vs one teaspoon
A domestic deep fryer holds between 2 and 3 litres of oil, and that oil should be replaced after 6–8 uses. Over a month of twice-weekly frying that is roughly 5 litres of oil in the bin. The air fryer used a teaspoon (5 ml) per batch of fries and nothing at all for the wings, which cook in their own fat.
Monthly oil: deep fryer ≈ 5 L · air fryer ≈ 0.05 L.
2. Fat and calories on the plate
Fries absorb between 8 and 14 g of oil per 100 g when deep-fried. Air-fried, the same portion absorbs about 1.5 g. For a 150 g serving that is the difference between ~180 kcal and ~25 kcal from oil alone — which is where the often-quoted "up to 85% less fat" comes from. Chicken wings actually lose fat in the air fryer because the rendered fat drips through the basket instead of being reabsorbed.
3. Electricity
The RD-1012W draws 1800 W at full power, but the heating element cycles once the cavity is hot. A 20-minute batch of fries measured about 0.55 kWh. A deep fryer at 2000 W needs 10–15 minutes just to bring the oil up to 180 °C before you cook anything, and an oven takes even longer to preheat a much larger space. Over a month the air fryer came out cheapest of the three.
4. Clean-up
This is the one nobody quantifies. Deep-frying means filtering and storing hot oil, wiping a greasy film off the hob and the wall, and dealing with the smell for a day. The air fryer basket is non-stick and dishwasher-safe; the whole clean took under three minutes.
5. Taste and texture — honest verdict
- Fries: deep-fried are slightly more uniform; air-fried are crisper on the outside and fluffier inside. Soak the cut potatoes for 20 minutes first and the gap disappears.
- Wings: air fryer wins. Dry, blistered skin without the grease.
- Breaded chicken: spray the breading lightly with oil and it browns evenly. Skip the spray and it looks pale even though it is cooked.
The maths for a family of four
| Deep fryer | RD-1012W air fryer | |
|---|---|---|
| Oil per month | ≈ 5 L | ≈ 50 ml |
| Fat from oil (150 g fries) | ≈ 18 g | ≈ 2 g |
| Time to first batch | 25 min (incl. heating oil) | 18 min (3 min preheat) |
| Clean-up | 15–20 min | ≈ 3 min |
If you fry more than once a week, the air fryer pays for itself in oil alone within the first year — before you count the calories you did not eat.
Ready to try it? See the full feature story, specifications and FAQ on the RADOCO RD-1012W product page, or start with our air fryer cooking-times chart.
Frequently asked questions
Is air-fried food really healthier than deep-fried?
Yes. Hot-air cooking uses about a teaspoon of oil instead of litres, which cuts the fat content of foods such as fries and chicken by up to 85%. The crust is still crisp because the air moves at high speed around the food.
Does an air fryer use a lot of electricity?
An 1800 W air fryer running for 20 minutes uses about 0.6 kWh — roughly the same as an oven, but it finishes faster because there is no long preheat and the cavity is smaller.
Can I cook frozen food straight from the freezer?
Yes. Frozen fries, nuggets and samosas go in straight from the freezer. Add 2–4 minutes to the time on the packet and shake the basket halfway through.