Video summary

Ninja Double Stack AIR FRYER - Ultimate Review

Main summary

Key takeaways

Product Review

Product Reviewed

Ninja Double Stack Air Fryer — a dual/double-drawer air fryer designed to fit smaller kitchens while offering similar capacity/performance to a larger unit.

Main Features / Design

  • Two independent drawers (double stack format)
    • 9.5L capacity (stated as identical to the Ninja Dual Zone capacity)
  • Drawer dimensions
    • Drawers are slightly different sizes
    • Notably shallower drawer depth on the Double Stack: ~13 cm vs 14.5 cm on the Dual Zone
    • Intended to fit under kitchen cupboards

Height / Footprint Compromises

  • Designed for cupboards
    • Around 37.5 cm high (reviewer notes 41 cm from worktop to cabinet bottoms in their kitchen)
  • Front-to-back depth
    • About 47 cm front-to-back including the handle
    • May require up to ~52 cm usable space depending on wall/clearance constraints
  • Right-side exhaust vents
    • Requires clearance to the right
    • Extra clearance roughly ~6 cm beyond the control panel protrusion

Heating Element Placement

  • Because of height limits, the Double Stack can’t place heating elements above the drawers (unlike the Dual Zone)
  • Uses a rear-mounted heating element
  • Vents in the drawers push hot air forward

Crisper Plate Options

  • Can be used low (similar to Dual Zone), or
  • Inverted/high to improve airflow for smaller frozen items (faster cooking)

Included Racks

  • Racks are designed by Ninja
  • Reviewer contrasts these with typical third-party racks, suggesting they waste less space
  • Designed with a ledge so they sit correctly in the drawer
  • Easy insertion/removal (handles up)

“Pro” Stacked Cooking Modes

  • Double Stack Pro
    • Cooks the top layer (for crisping) and bottom layer (for other items) simultaneously using the rack
  • Mentions Sync/Match-style functionality
    • Coordinating finish times or duplicating settings between drawers (wording varies)
    • Intended to support staggered cooking or cloned settings

User Experience / Controls

  • Control panel differs from other air fryers:
    • Buttons to select each Zone (top/bottom)
    • Dial to choose settings
    • Separate Power button (reviewer likes this)
  • Reviewer expected the large dial to start cooking, but notes the start button is separate at the bottom

Pros (As Stated)

  • Space-saving under cupboards
    • Specifically built for smaller kitchens (shallow drawers + lower overall height)
  • Stays close to Dual Zone capacity
    • 9.5L stated as identical to the Dual Zone
  • Racks and Pro mode use space well
    • Enables “cook vegetables below + crisp fish/meat above”
    • Can potentially do this twice across both drawers
  • Performance consistency when used correctly
    • Cooking time increase described as typically small (1–2 minutes) vs Dual Zone
    • Reviewer argues many unevenness complaints come from not following Ninja’s shaking instructions
  • No power-loss issue on UK models (when running both drawers)
    • Reviewer claims results are identical whether cooking one drawer or both (at least for their test item)

Cons (As Stated)

  • May cook slightly slower and/or brown less evenly
    • Especially for items toward the back
  • Requires more usable depth and side clearance
    • Reviewer estimates up to ~52 cm needed on a 60 cm deep worktop depending on obstacles
    • Right-side exhaust means you must keep clearance to the right
  • Some uneven browning observed
    • Items nearer the rear (where airflow/heater path is) browned less unless shaken during cooking

Side-by-Side Tests vs Ninja Dual Zone (Key Results)

(All items were intended to be cooked as similarly as possible.)

  • Two roast chickens
    • 40 min roast + 6 min Max Crisp
    • Both fully cooked, but:
      • Dual Zone chicken had slightly higher internal temperature
      • Dual Zone skin had darker browning
  • Toasted cheese sandwiches (200°C, ~6.5 min)
    • Dual Zone: brown/crispy and ready
    • Double Stack: needed extra ~1 minute and still looked paler, especially at the back
  • Sausages + frozen chips (drawer of 6 sausages + chips)
    • After half time: Double Stack sausages at the back had less color
    • After an additional 3 minutes plus shaking: ended evenly cooked
  • Two sponge cakes (bake 20 min)
    • Similar overall, but:
      • Dual Zone had slightly more browning
  • Frozen fish fingers (180°C, 8 min, with shaking/flipping)
    • Reviewer states fish fingers were cooked so similarly they couldn’t tell which fryer they came from
  • Cookies at full capacity (all drawers)
    • Double Stack needed a couple of minutes extra
    • Cookies near the back were paler, suggesting slight back-to-front variance

Reviewer’s Explanation for Uneven Cooking Criticisms

  • Ninja advises shaking three times during a Double Stack cook cycle
  • This is contrasted with once halfway on the Dual Zone
  • Reviewer argues negative comparisons are unfair if owners don’t follow the shake frequency guidance

Reviewer’s Test on “Slower When Using Both Drawers”

  • A criticism claimed Double Stack takes longer when both drawers run
  • Reviewer disputes this for UK (240V) models
  • Their test with a food item showed identical results cooking:
    • one drawer vs two drawers at the same time/temperature

Comparisons Mentioned

  • Repeated direct comparison to Ninja Dual Zone
    • Same stated 9.5L capacity
  • Notes about a US version difference:
    • Reviewer attributes some US complaints to 110V
    • Claims UK models (240V) don’t have the same issue

Numerical / Timing Highlights Included

  • Chicken: 40 minutes roast + 6 minutes Max Crisp
    • Dual Zone: slightly better internal temperature + browning
  • Cheese sandwich: 200°C for 6.5 minutes
    • Double Stack: +1 minute, still paler
  • Sausages/chips: Double Stack needed +3 minutes overall (plus shakes) for evenness
  • Fish fingers: 180°C for 8 minutes (shaking/flipping emphasized)
  • Cakes: bake 20 minutes
    • Dual Zone: slightly more browning
  • Cookies (full drawers): Double Stack needed a couple more minutes
    • Back-area paleness noted

Overall Verdict / Recommendation

Recommended if you specifically need an air fryer that fits under low kitchen cupboards while still delivering large dual-drawer capacity—the Pro/rack features add real versatility.

But expect slightly reduced browning/evenness at the back and plan to shake more frequently and possibly add ~1–2 minutes depending on food, compared with the Ninja Dual Zone.

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