The one kitchen category where Chinese brands win
Air fryers are unusual in the kitchen-appliance world: the #1 brand on Amazon US is Cosori, a Chinese company. It holds 5+ of the top 30 best-seller slots, and its models are cheaper than the US competitors while offering more features.
This isn’t an accident. Cosori is part of the VeSync family — the same Shenzhen-based company that owns Levoit (air purifiers, humidifiers), Etekcity (kitchen scales, thermometers), and Pawsync (pet products). VeSync is one of China’s largest consumer electronics companies, and its brands are engineered for the Amazon marketplace from day one: spec-sheet features, digital controls, app integration, and aggressive pricing.
The US competitors — Ninja (NYSE: SN) and Instant Pot (Centre Lane Partners) — are established retail brands with physical store presence. But in the features-per-dollar game, Cosori wins.
The “fry” is marketing. The fan is the product.
Here’s what an air fryer actually is: a countertop convection oven with a very fast fan.
The heating element (1,400–1,700W) heats the air. The fan (200–300 mph) circulates that air around the food. The food cooks from the outside in, the same way it would in a convection oven. The 1–2 teaspoons of oil you add help the Maillard reaction (browning), but the fan is what’s doing the cooking.
This means the fan quality matters more than the wattage. Two air fryers with the same wattage can produce very different results if one has a stronger, better-designed fan. This is where Cosori’s engineering investment shows: their fans are sized and positioned for even airflow across the full basket, not just the center.
The energy-cost math
| Appliance | Draw | Cost/hour ($0.15/kWh) | Typical meal (25 min) |
|---|---|---|---|
| Air fryer (5.5QT) | 1,500W | ~$0.23 | ~$0.10 |
| Convection oven | 2,500W | ~$0.38 | ~$0.16 |
| Deep fryer | 1,800W | ~$0.27 | ~$0.11 |
| Stovetop (induction) | 1,800W | ~$0.27 | ~$0.11 |
The air fryer is 40% cheaper to run than a convection oven for the same meal, because you’re heating a 5.5QT volume, not a 5-cubic-foot oven. It’s comparable to a deep fryer, but without the oil.
The hidden cost: the preheat. Most air fryers need 3–5 minutes to preheat, which is pure energy waste if you’re only cooking for 10 minutes. For quick meals (frozen fries, chicken nuggets), the preheat is 20–30% of your total energy cost. For longer meals (chicken, vegetables), it’s 5–10%.
The picks, in detail
#1: Cosori Pro LE 5.7QT — best overall
The sweet spot for most households. 5.7QT is big enough for 4 servings of chicken wings or 1.5 whole chickens, and small enough to fit on a standard counter.
The fan is the difference. On a full load of frozen fries, the Cosori’s fan circulates air evenly across the basket. On a 3qt air fryer with the same load, the fries in the center cook while the ones on the edge are still frozen. That’s the difference between a product that works and one that doesn’t.
The VeSync app is a bonus if you already run a Levoit purifier or humidifier — same app, same ecosystem. If you don’t, it’s a nice-to-have: you can set custom cooking profiles, get notifications when the meal is done, and track your cooking history.
#2: Cosori Dual Zone 7.5QT — best for families
The dual-zone design is the feature that changes how you cook dinner. Two independent baskets, each with its own temperature and timer. Cook chicken at 400°F and fries at 375°F at the same time. The “sync finish” button makes them end together, so dinner is ready at the same time.
The tradeoff: each zone is only ~3.75QT. If you’re cooking for 5+ people, a single 6QT basket might be more practical. The dual-zone is for households that cook different things at once — parents who want grilled chicken while the kids want nuggets.
#3: Ninja AF101 4.5QT — best US-brand alternative
The Ninja is the US market leader, and the “Crisp & Crinkle” technology is a legitimate improvement over basic convection. The 4.5QT is smaller than the Cosori, but for 1–2 people it’s the right size.
The “American brand” caveat: Ninja is a US public company (NYSE: SN), but its largest shareholder is CJ Xuning Wang (39.1%, listed as Hong Kong/PRC citizenship) plus JS&W Group Holdings (37.8%). The “American” label is more complex than it looks. The product is designed and marketed in the US, and the retail presence is genuinely American — but the ownership is not purely US.
#4: Instant Pot Vortex Plus 6.3QT — best for Instant Pot owners
The glass lid is the standout feature. You can watch the food cook without opening the basket, which preserves the heat and the even airflow. For people who already own an Instant Pot pressure cooker, the Vortex Plus is a natural addition to the same app ecosystem.
The tradeoff: the fan is slightly weaker than the Cosori at the same wattage. On a full load of frozen fries, the evenness of cooking is a step behind. For batch cooking or large meals, the Cosori is the better buy.
Common mistakes
Buying by wattage, not basket size. Two air fryers with 1,500W can produce very different results if one has a 4QT basket and the other has a 6QT. The bigger basket gives the fan more room to circulate, which means more even cooking.
Expecting it to replace your oven. An air fryer is a convection oven, not a full-size oven. It won’t fit a 14-inch pizza, a whole turkey, or a large casserole. It’s a supplement, not a replacement.
Not cleaning the basket after every use. The oil residue polymerizes over time, and a polymerized basket is a fire risk and a flavor contaminant. Wash it after every use, or at least after every oil-heavy meal.
Preheating for quick meals. For a 10-minute meal, the 3-minute preheat is 30% of your energy cost. Skip it for frozen foods that are designed to cook from frozen.
The bottom line
For most households, the Cosori Pro LE 5.7QT is the right buy: the best fan, the right size, the VeSync app, and a price that makes the whole “is it worth it” question easy.
Buy the Cosori Dual Zone if you cook different things at once. Buy the Ninja AF101 if you want a US retail brand with easy parts availability. Buy the Instant Pot Vortex Plus if you’re already in the Instant Pot ecosystem.
And check your kWh rate before you buy. At $0.30/kWh — which is reality for tens of millions of Americans — every air fryer meal costs double what the math above says, and the “cheaper than the oven” argument gets weaker.