Ninja Foodi DZ401 vs Breville the Joule Oven Air Fryer Pro

Which Air Fryer Is Better?

Products

Ninja Foodi DZ401
Breville the Joule Oven Air Fryer Pro 
early access

Tested using Methodology v1.0.1

Updated Aug 18, 2025 04:00 PM

SEE PRICE
Amazon.com

Tested using Methodology v1.0.1

Updated Nov 18, 2025 09:03 PM

This review is in Early access

SEE PRICE
Amazon.com

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
0 

Variants

  • AF400EUCP (Copper/Black)
  • DZ401 (Gray)
  • AF400EU (Gray)
  • BOV950BST (Black Stainless Steel)
  • BOV950BSS (Stainless Steel)

Check Price

Copper/Black
AF400EUCP
Amazon.com
Black Stainless Steel
BOV950BST
SEE PRICE
Amazon.com
Stainless Steel
BOV950BSS
SEE PRICE
Amazon.com
Gray
AF400EU
Amazon.com
 

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

Design

Size 
 

6.3
N/A

Device Dimensions  

Breville the Joule Oven Air Fryer Pro Device Dimensions Sample

SAMPLE

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To see pictures and test results

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  

Breville the Joule Oven Air Fryer Pro Isometric Basket View Sample

SAMPLE

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Surface Area Picture  

Breville the Joule Oven Air Fryer Pro Surface Area Picture Sample

SAMPLE

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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
Show Text 

Cooking Versatility 
 

8.7
N/A

Control Panel Photo  

Breville the Joule Oven Air Fryer Pro Control Panel Photo Sample

SAMPLE

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Dual Cooking Chambers  

Yes
Locked

Cooking Method Presets 
 

6
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 
 

No
Locked
Show Text 
Performance

Frying Quality 
 

7.3
N/A

Sorted Fries  

Breville the Joule Oven Air Fryer Pro Sorted Fries Sample

SAMPLE

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Fry Sorting Video  

Breville the Joule Oven Air Fryer Pro Fry Sorting Video Sample

SAMPLE

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Crispy Fries 
 

62.9%
Lock%

Overcooked Fries 
 

20.0%
Lock%

Undercooked Fries 
 

17.1%
Lock%
Show Text 

Cooking Speed 
 

8.6
N/A

Moisture Loss Over Time  

See details
Breville the Joule Oven Air Fryer Pro Moisture Loss Over Time Sample

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Time To Reach 45% Moisture Loss  

16:26
27:42

Preheat Speed 
 

8.7
N/A

Preheat Speed  

See details
Breville the Joule Oven Air Fryer Pro Preheat Speed Sample

SAMPLE

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Preheat Reminder 
 

No
Locked

Time to Reach 400°F 
 

02:19
07:21

Temperature Stability 
 

8.2
N/A

Temperature Stability  

See details
Breville the Joule Oven Air Fryer Pro Temperature Stability Sample

SAMPLE

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To see pictures and test results

Recovery Time Once Food Added 
 

02:38
02:01

Temperature Variation at 400°F 
 

16 °F
Lock °F
Show Text 

Check Price

Copper/Black
AF400EUCP
Amazon.com
Black Stainless Steel
BOV950BST
SEE PRICE
Amazon.com
Stainless Steel
BOV950BSS
SEE PRICE
Amazon.com
Gray
AF400EU
Amazon.com
 

Ninja Foodi DZ401

Breville the Joule Oven Air Fryer Pro

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