Ninja Foodi DZ401 vs Breville the Joule Oven Air Fryer Pro

Tested using Methodology v1.0.1

Updated Nov 18, 2025 09:03 PM

This review is in Early access

See Ninja Foodi DZ401 Review

Breville the Joule Oven Air Fryer Pro Picture

Dual Cooking ChambersYes

Measured Capacity10.1 qt (9.6 L)

Nonstick Coating Type Ceramic

Dual Cooking ChambersLocked

Measured CapacityLock qt (Lock L)

Nonstick Coating Type Locked

Our Verdict

Ninja Foodi DZ401

Breville the Joule Oven Air Fryer Pro

Full comparison details regarding individual product score sets can be found in the section below

Variants

AF400EUCP (Copper/Black)
DZ401 (Gray)
AF400EU (Gray)

BOV950BST (Black Stainless Steel)
BOV950BSS (Stainless Steel)

Review

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Copper/Black

AF400EUCP

Black Stainless Steel

BOV950BST

Gray

DZ401

Stainless Steel

BOV950BSS

Gray

AF400EU

Main Differences for

Air Frying

Threshold

0.10

Air Frying

7.9

0.0

No major differences between these air fryers for air frying. See full list of tests below.

Full Comparison

Air Frying

7.9

0.0

Large Batch Cooking

8.3

0.0

Frying Performance

7.6

0.0

Cooking Speed

8.6

0.0

Cooking Capacity

8.5

0.0

Size

6.3

0.0

Design

Size

6.3

N/A

Device Dimensions

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Height

12.8" (32.5 cm)

Lock" (Lock cm)

Width

16.4" (41.7 cm)

Lock" (Lock cm)

Depth

14.4" (36.6 cm)

Lock" (Lock cm)

Overall Volume

3,026.9 in³ (49,602 cm³)

Lock in³ (Lock cm³)

Cooking Chamber

8.5

N/A

Isometric Basket View

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Surface Area Picture

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Single Basket Surface Area

50.0 in² (322.8 cm²)

Lock in² (Lock cm²)

Total Basket Surface Area

100.1 in² (645.6 cm²)

Lock in² (Lock cm²)

Advertised Capacity

10.0 qt (9.5 L)

Lock qt (Lock L)

Measured Capacity

10.1 qt (9.6 L)

Lock qt (Lock L)

Chamber Height

4.3" (11.0 cm)

Lock" (Lock cm)

Nonstick Coating Type

Ceramic

Locked

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Cooking Versatility

8.7

N/A

Control Panel Photo

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Dual Cooking Chambers

Yes

Locked

Cooking Method Presets

Lock

Minimum Temperature

105 °F (41 °C)

Lock °F (Lock °C)

Maximum Temperature

450 °F (232 °C)

Lock °F (Lock °C)

Minimum Fan Speed

1,315 RPM

Lock RPM

Maximum Fan Speed

3,100 RPM

Lock RPM

Maximum Power Draw

1,545 W

Lock W

Temperature Probe

Locked

Show Text

Performance

Frying Quality

7.3

N/A

Sorted Fries

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Fry Sorting Video

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Crispy Fries

62.9%

Lock%

Overcooked Fries

20.0%

Lock%

Undercooked Fries

17.1%

Lock%

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Cooking Speed

8.6

N/A

Moisture Loss Over Time

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Time To Reach 45% Moisture Loss

16:26

27:42

Preheat Speed

8.7

N/A

Preheat Speed

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SAMPLE

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Preheat Reminder

Locked

Time to Reach 400°F

02:19

07:21

Temperature Stability

8.2

N/A

Temperature Stability

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SAMPLE

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Recovery Time Once Food Added

02:38

02:01

Temperature Variation at 400°F

16 °F

Lock °F

Show Text

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Copper/Black

AF400EUCP

Black Stainless Steel

BOV950BST

Gray

DZ401

Stainless Steel

BOV950BSS

Gray

AF400EU