An air fryer typically draws between 1,400W and 2,400W on the UK 240V mains, so a daily 20-minute cook costs around £3–£9 per month at current energy rates. Choosing the right capacity for your household is the single biggest lever on that figure, and this guide breaks down exactly what each model on this list will cost you to run.
What to look for
01Wattage and cost per session
Wattage is the starting point for any running-cost calculation. On the UK 240V supply, most compact air fryers sit around 1,400W–1,700W, while large dual-zone models push 2,400W–2,650W. At the current Ofgem price cap of roughly 24p per kWh, a 1,500W fryer running for 20 minutes costs about 12p per session. A 2,400W model doing the same job costs around 19p. Run either daily for a month and you're looking at £3.60 versus £5.70 — a meaningful difference over a year. The Chefman 2L mini fryer at £29.99 is aimed squarely at solo cooks who want low wattage and a small footprint; the Ninja Foodi FlexDrawer at 10.4L is built for families who'd otherwise run a full oven. Matching wattage to your actual portion size stops you paying to heat air you don't need.
02Capacity and portion size
Buying too large a basket wastes electricity on every cook; buying too small forces you to run two batches, which can cost more than a bigger fryer would have. As a rough guide: a 2L basket suits one person, 4–5L covers two adults, 7–8L handles a family of four, and 9–10L is for batch cooking or households of five or more. The Ninja Foodi Dual Zone at 7.6L (model AF300UK) is rated for 4–6 portions, making it the sweet spot for most UK families. The Tefal Easy Fry Dual Zone at 8.3L covers 6 portions at £99.99, which is notably cheaper than the equivalent Ninja. If your kitchen worktop is tight — standard UK base units run 600mm deep — measure before you buy, as the 10.4L FlexDrawer is a substantial appliance.
03Dual-zone versus single-basket efficiency
Dual-zone fryers let you cook two different foods simultaneously at different temperatures, which sounds like it uses more power — and it does draw more watts — but it replaces two separate appliances running in sequence. If you'd otherwise use an oven alongside a single-basket fryer, a dual-zone model almost always wins on total energy use. The Ninja AF400UK range and the Tefal EY901HG0 both use this approach. The key efficiency question is whether you actually cook two-component meals regularly. If you mostly do chips or reheating, a compact single-basket unit like the Chefman 2L (currently £29.99, 90-day low £25.00) will cost you less to run and less to buy.
04Hard-water areas and long-term maintenance
This factor is easy to overlook, but if you live in a hard-water area — roughly two-thirds of England, including London, the South East, and the Midlands — limescale can affect any appliance that uses steam or moisture. Air fryers themselves are not directly affected by limescale, but the dishwasher you use to clean the baskets is. All the models listed here have dishwasher-safe baskets, which is convenient, but running a dishwasher cycle for a single basket is rarely efficient. Hand-washing non-stick baskets in warm water takes under two minutes and extends the coating's life, keeping the fryer performing at its rated efficiency for longer.
05Price versus running cost: the total ownership view
A cheaper air fryer is not always the cheaper choice over 12 months. The Chefman 2L at £29.99 has a low purchase price, but if a solo cook upgrades to a larger model within six months because capacity is too small, the combined spend exceeds buying the right size first time. Conversely, spending £268.99 on the Ninja FlexDrawer for a one-person household is hard to justify on running-cost grounds. The Tefal Easy Fry Dual Zone at £99.99 offers 8.3L and 8-in-1 functions at a price that undercuts the Ninja dual-zone range by £60–£130, making it the strongest value proposition for families watching both the purchase price and the electricity meter.
Our top picks
Best value dual-zone for familiesTefal Easy Fry Dual Zone Digital
The Tefal Easy Fry Dual Zone (EY901HG0) offers an 8.3L split basket and 8-in-1 functions — air fry, roast, bake, dehydrate, and more — for £99.99, which is £60 less than the cheapest comparable Ninja dual-zone model. Its 90-day low of £67.98 shows it discounts regularly, so it's worth setting a price alert. Non-stick, dishwasher-safe baskets and a coal grey finish that suits most UK kitchen colour schemes round out a strong package.
Best dual-zone for frequent batch cookingNinja Foodi MAX Dual Zone Digital
Its 90-day low of £112.00 versus the current £226.77 means timing your purchase around a sale can halve the outlay. The Max Crisp function runs at higher heat than standard air-fry mode, cutting cook times and reducing the total kWh used per meal.
Best for large households replacing an ovenNinja Foodi FlexDrawer Air Fryer
The Ninja Foodi FlexDrawer (AF500UK) is the largest model here at 10.4L, with a removable divider that lets you switch between one giant cooking zone and two separate ones. At £268.99 it is a significant outlay, but for a household of five or more it can replace oven use for most weeknight meals, cutting energy consumption substantially. The 7-in-1 function set and fully dishwasher-safe parts justify the premium for high-volume cooks.
Best mid-size for households of fourNinja Foodi Dual Zone Digital Air
The Ninja Foodi Dual Zone AF300UK offers 7.6L across two drawers and handles 4–6 portions, making it the practical choice for a typical UK family of four. At £159.00 it sits between the budget Tefal and the larger Ninja MAX models. Its 90-day price history shows a low of £24.00, suggesting deep discounts do appear — though at current pricing the Tefal 8.3L offers better value per litre if you can't wait for a sale.
Frequently asked
How much does an air fryer cost to run per month in the UK?
At the current Ofgem price cap of around 24p per kWh, a 1,500W air fryer used for 20 minutes daily costs roughly £3.60 per month. A larger 2,400W model on the same schedule costs around £5.76 per month. If you use it twice a day or for longer sessions, double those figures. Compared with a standard electric oven drawing 2,000W–3,000W for 45–60 minutes, an air fryer typically cuts cooking energy use by 50–70% for equivalent meals.
Is a dual-zone air fryer more expensive to run than a single-basket model?
A dual-zone fryer draws more watts when both zones are active, but it replaces two separate cooking sessions. If you'd otherwise run a single-basket fryer and then reheat something in the oven, the dual-zone approach uses less total energy. The efficiency gain depends on how often you actually cook two components at once. For solo cooks or couples who mostly do one-item meals, a compact single-basket model like the Chefman 2L at £29.99 will cost less to run day to day.
What size air fryer do I need for a family of four in the UK?
For four people, aim for a 7L–9L capacity. The Ninja Foodi Dual Zone AF300UK at 7.6L is rated for 4–6 portions and fits most UK kitchen worktops. If you batch cook or have hungry teenagers, step up to the 9.5L Ninja MAX or the 8.3L Tefal Easy Fry Dual Zone. Going smaller than 6L for a family of four usually means running two batches, which negates the time and energy savings that make air fryers worthwhile.
Do air fryers use a lot of electricity compared with a microwave?
Air fryers use more electricity than microwaves for equivalent reheating tasks. A microwave typically draws 700W–1,000W; an air fryer draws 1,400W–2,400W. However, air fryers produce crispy results that microwaves cannot replicate, so the comparison depends on what you're cooking. For reheating leftovers where texture matters — chips, pastries, battered fish — an air fryer is worth the extra few pence per session. For soup or rice, a microwave or hob is more efficient.
When is the best time to buy an air fryer in the UK to get the lowest price?
Black Friday in late November consistently produces the deepest discounts on air fryers from Ninja, Tefal, and Tower. Amazon Prime Day in July is a second reliable window. The 90-day price data for the products in this guide shows swings of up to 50%: the Ninja AF400UK dropped to £112.00 against a high of £229.00, and the Tower Vortx Vizion fell to £59.98 against a high of £94.99. Setting a price-drop alert via a tool such as CamelCamelCamel is the most reliable way to catch these deals.