Ninja Foodi Max Dual Zone Air Fryer (AF400ANZ)

The Ninja Foodi Max AF400ANZ is the air fryer that turned air fryers from a gimmick into a category. Two independent 4.75L drawers, each with its own heating element, fan and temperature dial, under a single outer chassis. The magic is not the capacity (the Breville Smart Oven has more), it is the fact that the two drawers are independent. You can cook chips at 200°C in the left drawer and chicken Maryland at 180°C in the right drawer, and the machine will finish both of them at the same time if you press SYNC. Nothing else under $500 does that.

Quick model note before we go further: the AF400ANZ is the current mainstream Ninja dual-zone in Australia. The older AF400UK is the UK variant and should not be bought here (different voltage, no Australian warranty). The newer AF500ANZ is the same chassis with a clear viewing window in each drawer and a bake stand accessory. The AF500 sells for $100 to $150 more than the AF400 and the only practical difference you will notice is that you can see the chips browning without opening the drawer. For most people that is not worth $100. Stick with the AF400.

What it is like to actually use

The touchscreen is responsive and the controls are laid out in two halves, one per drawer. Each drawer has its own function dial (Max Crisp, Air Fry, Roast, Reheat, Dehydrate, Bake), its own time setter, and its own temperature setter. Between them are two buttons: SYNC and MATCH. SYNC tells the machine to stagger the start of the faster drawer so both drawers finish at the same time. MATCH tells both drawers to run the same settings, which is how you get to a full 9.5L single-temperature cook.

Ceramic non-stick baskets are the other thing to pay attention to. Most cheaper air fryers use painted non-stick, which starts showing wear at the 6-month mark. The Ninja ceramic baskets in our testing were still visually clean at 18 months of 3-to-4-times-per-week use. The difference is real.

Torture tests

Cook 800g of frozen chips to golden and crispy in one drawer, while reheating last night's pizza in the other, finishing at the same time. SYNC mode, chips at 200°C for 18 minutes, pizza at 160°C for 6 minutes. The pizza drawer sat idle for 12 minutes, then started. Both came out ready at the 18-minute mark. Chips were crispy edge to edge, pizza base was firm, cheese was melted without browning. This is the scenario the machine exists for, and it is not a gimmick.

Cook a full roast chicken in the MATCH-combined 9.5L. 1.4kg whole chook, MATCH mode at 180°C, 45 minutes, flipped at halfway. Skin came up properly crispy and the meat was at 75°C throughout. The chicken barely fit (you need to truss the legs inward), but it fit.

Reheat leftover Thai takeaway with rice in one drawer and vegetables in the other. Both drawers at 160°C for 8 minutes, no SYNC needed. Rice warmed without drying, vegetables kept their bite. Microwave reheats often destroy this kind of leftover; the air fryer preserves texture.

The reliability picture

The AF400ANZ has been on Australian shelves since 2022, which means we now have 3+ years of long-tail reliability data. The picture is mostly good. ProductReview and Whirlpool report a steady 4.5-to-4.7 average rating with two clusters of failures: touchscreen membrane failures at the 18 to 24-month mark (usually unresponsive zones on the panel), and fan motor bearings on the faster-spinning zone at the 30 to 36-month mark. Both failures are inside the ACL window for a $300 appliance, and Ninja Australia has a reputation for pragmatic warranty handling.

The heating elements run hot enough over time to discolour the top plastic around each drawer. This is cosmetic, not a fault, and does not affect cooking. Anyone expecting the unit to look showroom-fresh after two years of daily use is going to be disappointed.

Who it is for

Families of four or more. Anyone cooking two different things most nights (chips for the kids, a protein for the adults). Anyone who has already run a single-zone air fryer for a year and kept hitting the same limitation: you cannot cook different foods at different temperatures without serial batching. People with enough bench space for a 41.5cm-wide appliance. Skip this if you live alone (get the Ninja Pro XL or the Philips Essential), if your bench is narrow (get the Pro XL), or if you want a full oven replacement instead of a dedicated air fryer (get the Breville Smart Oven).

Your rights under Australian Consumer Law: At $289 to $350, the AF400ANZ sits in mid-range pricing and a reasonable Australian consumer would expect 5 to 7 years of working service from a dual-zone air fryer at this money. Ninja's 2-year manufacturer warranty is the floor and it is already better than most competitors in this tier. If a touchscreen zone goes unresponsive at year three, if one of the fan motors starts rattling at year four, if a ceramic basket develops a stress crack at year five, each of those is a consumer guarantee claim under the ACL. Take it back to the retailer that sold it to you (JB Hi-Fi, The Good Guys, Harvey Norman, Ninja Kitchen Australia direct), not straight to Ninja's support line. The ACL obligation sits with the retailer first. Ninja Australia's after-sales team is pragmatic and usually replaces rather than repairs inside the ACL window, because the parts and labour cost on a 3-year-old AF400 is close to the replacement cost of a new one.