I’ve now tested more than a dozen air fryers in my kitchen and recommended them to enough friends and readers to know what questions come up most often. The most common mistake isn’t buying a bad brand — it’s buying the wrong capacity. Here’s what actually matters, in order of importance.
1. Capacity — The Single Most Important Spec
This is the one thing most buyers get wrong.
Air fryer marketing uses quarts loosely. A 4-quart air fryer sounds like plenty of space — it isn’t, for most families cooking bone-in pieces. Here’s what capacity actually means in practice:
| Capacity | Fits in One Batch | Best For |
|---|---|---|
| 2–3 quarts | 2 chicken pieces, chips for 2 | Couples |
| 4 quarts | 3–4 boneless pieces, chips for 3–4 | Families of 2–4 (boneless) |
| 5.5–6 quarts | 4–5 bone-in thighs, chips for 4–5 | Families of 3–5 |
| 7+ quarts | 5–6 bone-in pieces, full rack wings | Families of 5+ |
The rule: If you’re cooking for more people than these estimates, you’ll batch cook. Batch cooking is fine, but it adds time and partly defeats the speed advantage of air frying.
Also check: round vs square basket. A 5.8-quart square basket has more usable flat surface than a 6-quart round basket. Always look at basket shape alongside the capacity figure.
2. Cleanup — How Long Does the Basket Actually Take?
Any air fryer basket can be called “easy to clean” on a box. In my experience, there’s a real difference.
Dishwasher-safe is non-negotiable for daily family use. Every air fryer I’d recommend has a dishwasher-safe basket and crisper plate. This removes the question of whether you’ll clean it after every use. You will, because it’s no effort.
Ceramic-coated baskets (Cosori) release food more cleanly than PTFE non-stick (Ninja), particularly on fattier cuts like bacon or duck. The difference is minor for boneless chicken and vegetables but noticeable on stickier foods.
Avoid baskets described only as “non-stick” without specifying the coating. That’s marketing for a thin coating that often starts flaking within six months of daily use.
3. Family Size vs Counter Space — The Trade-Off
Larger-capacity air fryers are physically larger. Here are approximate dimensions to check against your worktop:
| Capacity | Approximate Width | Models |
|---|---|---|
| 4 quarts | 20–22 cm | Ninja AF101 |
| 5.8–6 quarts | 26–30 cm | Cosori Pro II, Instant Vortex Plus |
| 7 quarts | 33–35 cm | Philips XXL |
| Dual-basket 8 qt | 36–40 cm | Ninja Foodi DZ201 |
If you have limited worktop space, this may make the decision for you. An air fryer that lives in a cupboard gets used twice a month; one on the counter gets used daily.
4. Preset Functions — Useful, Not Essential
Preset programs matter less than most buyers expect. Here’s why: once you’ve cooked chicken thighs a few times, you know the time and temperature. You don’t need a Chicken button.
Presets are most useful in the first month, when you’re still learning what works. After that, most experienced home cooks set temperature and time manually regardless.
That said: The Cosori Pro II’s shake reminder (a notification at the halfway point for chips and wings) is genuinely useful when you’re making three other things at the same time. Dedicated frozen food presets also save time when you’re cooking from frozen regularly.
Minimum useful functions: Air Fry, Reheat, Dehydrate. Everything else is a bonus.
5. Wattage — Aim for 1,500W+
Higher wattage means faster preheating and more consistent temperature maintenance across large batches.
- 1,500–1,600W: Fine for 4-quart models (Ninja AF101: 1,550W)
- 1,700–1,800W: Appropriate for 5.5–6 quart models (Cosori Pro II: 1,800W)
- 2,000W+: Better suited to 7-quart models (Philips XXL: 2,225W)
Underpowered models in larger baskets produce less consistent results — the air can’t maintain temperature as reliably across a larger volume. The Instant Vortex Plus (1,700W / 6 quarts) is on the lower end for its size, which contributes to the slightly inconsistent results I observed in testing.
6. Budget — What You Actually Get at Each Price Point
| Budget | What You Get | Best Pick |
|---|---|---|
| Under £80 | 4-quart compact or 6-quart with fewer features | Ninja AF101 (£70) or Instant Vortex Plus (£80) |
| £80–£120 | 5.5–6.8-quart with proper presets | Cosori Pro II (£90) |
| £150–£200 | Large-capacity premium or dual-basket | Philips XXL (£200) or Ninja Foodi DZ201 (£150) |
| £200+ | Premium everything | Philips XXL |
For most families, the £80–£120 range offers the best balance of capacity, features, and durability. You’re not sacrificing cooking quality at this price — you’re sacrificing advanced features you probably don’t need.
Common Mistakes to Avoid
Buying the cheapest option without checking capacity. A £45 air fryer that requires four batches to feed your family costs you 30 extra minutes every night. The Ninja AF101 at £70 is cheap enough and large enough for families of 2–4.
Buying based on preset count. 12 presets don’t produce better food than 4 presets. The air fryer mechanism is the same; the presets just set temperature and time for you.
Not checking the basket height for roasting. Some families want to cook a whole chicken or a small joint. Most basket-style air fryers have a basket that’s 10–12 cm deep. A whole chicken of 1.5 kg stands about 15 cm tall — it won’t fit in most standard baskets. Check dimensions if this matters to you.
Buying without measuring the worktop. Measure the space before you buy, including vertical clearance under cupboards. Most air fryers need 30–40 cm of clearance above the unit for heat and steam to escape safely.
My Recommendations by Family Size
- Family of 2–3: Ninja AF101 (~£70) — compact, fast, durable, excellent value
- Family of 4: Cosori Pro II 5.8-Qt (~£90) — best overall balance
- Family of 5: Cosori 6.8-Qt (~£110) or Instant Vortex Plus 6-Qt (~£80)
- Family of 6+: Philips Airfryer XXL (~£200) or Ninja Foodi DZ201 (~£150)
- Budget under £80 regardless of family size: Instant Vortex Plus 6-Qt
Frequently Asked Questions
What’s the best first air fryer for someone who’s never owned one?
The Ninja AF101 for smaller households, the Cosori Pro II for larger ones. Both are forgiving to learn on, have intuitive controls, and produce good results from the first use.
How long should an air fryer last?
With daily use and proper care, expect 3–5 years from a reputable brand (Ninja, Cosori, Philips, Instant). Budget models from unknown brands may last 12–18 months before the non-stick degrades or elements start failing.
Is it worth spending more than £150 on an air fryer?
Only for two reasons: you need the capacity (Philips XXL’s 7-quart is genuinely larger than anything at £150 or below) or you want the Philips’ superior TwinTurboStar airflow technology for best-in-class crispness. For most families, £80–£110 delivers 90% of the result.
Do air fryers use a lot of electricity?
Less than a conventional oven, significantly. An air fryer uses 1,500–2,200W for typically 15–25 minutes per meal. A conventional oven at 2,000–3,500W runs for 40–60 minutes including preheat. Average air fryer running cost per meal: approximately 5–8p at current UK electricity rates. Oven equivalent: 15–25p.
Disclosure: This post contains affiliate links. We may earn a small commission if you purchase through our links, at no extra cost to you. Full disclosure.
Related: Best Air Fryers for Families 2026 · Best Air Fryers Under £100 · Ninja AF101 Review