Most Energy-Efficient Air Fryers
Air fryers already beat the oven on energy for small portions. If cutting the bill further is the goal, here is what genuinely matters - and the low-wattage models worth a look.
Last updated
Wattage is only half the story
The energy a cook uses is power multiplied by time. A low-wattage air fryer draws less each minute, but if its weaker element takes longer to cook, the saving shrinks. A higher-wattage model that heats fast and cooks a full single layer can finish sooner and use less energy overall.
In practice the things that cut running cost most are not on the spec sheet: a smaller basket, a short or skipped preheat, cooking a full single layer rather than half-loads, and not opening the drawer every couple of minutes.
Low-wattage air fryers, cheapest to run per minute
Sorted by power draw, with the cost of a typical 15-minute cook at 27p/kWh. The cost figure is per-minute power only - a slower model may need longer, so read it alongside capacity.
| Model | Capacity | Power | 15-min cook |
|---|---|---|---|
| Tower Vortx Compact (Low Watt) 1.5L | 1.5L | 900W | 6.1p |
| Tower Vortx 4.3L | 4.3L | 1500W | 10.1p |
| Ninja Air Fryer AF100 | 3.8L / 4qt | 1550W | 10.5p |
| Philips Airfryer 3000 Series | 6.2L / 7.2L | 1700W | 11.5p |
| Instant Vortex Plus ClearCook 5.7L / 6-Qt | 5.7L / 6qt | 1700W | 11.5p |
| Tefal Easy Fry & Grill XXL 6.5L | 6.5L | 1700W | 11.5p |
| Cosori TurboBlaze 6L / 6-Qt | 6L / 6qt | 1725W | 11.6p |
| Ninja Foodi FlexDrawer (AF500) | 10.4L | 2400W | 16.2p |
| Ninja Foodi MAX Dual Zone (AF400 / 8-Qt DualZone) | 9.5L / 8qt (two drawers) | 2470W | 16.7p |
Why small usually wins
A compact basket has less air and less metal to bring up to temperature, so it heats faster and holds heat with less power. That is why a 900W single-portion model like the Tower Vortx Compact is the cheapest here to run - and also why it is no use to a family, because you would cook several batches and lose the advantage.
The honest rule is to buy the smallest air fryer that fits how you actually cook. An oversized model wastes energy heating space you are not using on every single meal.
Habits that cut the cost more than the model
- Skip the preheat for long cooks and dense food - they barely notice it.
- Cook a full single layer so you are not running the fryer twice for one meal.
- Cook back-to-back batches while the chamber is already hot rather than starting cold.
- Keep the drawer shut - every check dumps the hot air you just paid for.
- Match the size to the job: a small basket for a small meal, the oven for a big one.
Read next
For the full breakdown of air fryer running costs versus an oven, see do air fryers use a lot of electricity? To pick a model, the best air fryers by brand guide covers every option, and what size air fryer do I need? helps you avoid buying more than you use.
Frequently Asked Questions
Which air fryer uses the least electricity?+
The lowest-wattage models - small 900-1000W single baskets like the Tower Vortx Compact - draw the least power. But a higher-wattage model that heats fast and cooks in a single layer can use less energy overall for the same food, because it finishes sooner.
Do low-wattage air fryers cost less to run?+
Per minute, yes. Over a whole cook, not always - lower power can mean longer cooking, which cancels some of the saving. What reliably cuts cost is a small basket, a short preheat and cooking a full single layer.
Are air fryers cheaper to run than an oven?+
For one to four portions, clearly - mostly because the preheat is two minutes instead of fifteen. For a big meal that needs several batches, an oven is usually cheaper.
Does a bigger air fryer use more electricity?+
Generally yes. A larger chamber has more air and metal to heat, so it draws more power and takes longer to come up to temperature. Buy the smallest size that fits how you actually cook.