AIR FRYER OVEN REVIEW

Ninja DoubleStack 8 QT 2-Basket (SL201) Review

★★★★★ 4.7
4 owner reviews
8.5
Overall · #8 of 47

Crispiness8.8
Evenness8.5
Ease of use8.2
Noise7.6

The DualZone idea, stacked upward instead of spread wide. Two baskets and eight quarts of capacity that take up the footprint of a single-basket fryer.

Capacity8 qt (2 x 4 qt stacked)
Power1690W
Programs6
Warranty1 year
✓ What we liked
  • Two zones in a narrow, space-saving tower
  • Full eight quarts across the two baskets
  • Same Smart Finish syncing as the wider models
✗ Worth noting
  • Taller design needs headroom
  • Top and bottom baskets can brown slightly differently

How it tested

We ran the same battery of tests we use on every air fryer, from frozen chips to fresh wings and roast veg. Here is how it scored on each.

Crispiness — 8.8

Both racks turned out crisp chips and crunchy wings. The stacked design still moves plenty of hot air around each basket.

Crispy food fresh from the air fryer

Evenness — 8.5

Very close between the two levels, with the lower basket running a touch hotter on long cooks.

Ease of use & cleanup — 8.2

Baskets slide out front to back and go in the dishwasher. The layout takes a meal or two to learn but soon feels natural.

Noise — 7.6

Quieter than the wide twin-basket models, with a soft steady fan.

Design & build

A clever tower that saves worktop space by going up instead of out. It needs clearance above, so check the gap under your cupboards.

Who it’s for

✓ Buy it if…
  • You want two zones but have a narrow counter
  • You cook for a small family
✗ Look elsewhere if…
  • You have low overhead cupboards
  • You prefer everything at one height

Full specifications

Capacity8 qt (2 x 4 qt stacked)
Power1690W
Programs6
Temp range105-450°F
AccessoriesTwo stacked 4-qt baskets, two crisper plates
Dishwasher safeYes
ModelSL201
Warranty1 year

Our verdict

For small kitchens this is the smartest twin-basket around. You keep the two-zone cooking and the eight-quart total while giving up almost no bench space.

The trade is height and a slight difference between the two levels on long roasts. For everyday chips, wings and veg it is barely noticeable.

How it compares

It matches the DZ201 on capacity but stacks the baskets to save width. A single-basket AF181 is simpler but cannot cook two foods two ways.

Compare all models →

Frequently asked

Does it need space above it?

Yes. The stacked design is tall, so allow headroom under your cupboards.

Can each basket cook separately?

Yes. Each basket has its own settings, like the wider DualZone models.

Marcus Bell, Appliance reviewer
Reviewed by Marcus Bell, Appliance reviewer
AirFryer Ovens test kitchen · Bought at retail, never supplied by the brand

Every oven runs the same five stages: preheat timing, a frozen chip crispiness run, a full tray evenness test, a full load cook, then noise, energy and cleanup. Scores carry the same weighting on every model, so commission never moves a ranking.

How we test →

Owner reviews

4.7
★★★★★
4 verified reviews

★★★★☆

Bottom basket cooks a little quicker but easy to work around.

Sam P. · Jul 2026

★★★★☆

Works great, just tall. Had to move it out from under the cabinet.

Leo M. · Jul 2026

★★★★★

Chips on top, chicken below, both done together. Love it.

Nadia K. · Jul 2026

★★★★★

Two baskets that fit my tiny kitchen. Genius design.

Ruth A. · Jul 2026

STILL DECIDING?

See how it stacks up against every model we’ve tested

Line this air fryer up against every other one in our test kitchen and compare them on the things that matter: crispiness, evenness, capacity, noise and price, all scored on the same scale. Change the size or budget you have in mind and the table updates on the spot, so you can weigh the trade-offs and land on the model that truly fits your kitchen.

  • 47 models bought and tested at retail
  • The same 5 tests run on every single unit
  • No sponsored picks, so the ranking stays honest

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