In this comparison, I am going to break down the differences between the Ninja Flexdrawer, the Cosori Dual Blaze TwinFry, and the Duronic AF34. All three are air fryers featuring a large drawer that can be divided into two sections using a partition. But which one is truly the best?
Before diving in, I want to be transparent. I purchased both the Ninja and the Duronic air fryers myself. The Cosori was gifted to me several months ago by the manufacturer. However, they have no idea I am making this article and have had absolutely no input into it. What you are going to get here is a straightforward, honest rundown of how these three models compare, and by the end, it should be very clear which one offers the best value.
Table of Contents
Capacity and Build Quality
Starting with capacity, both the Cosori and the Duronic are 10L, while the Ninja is slightly larger at 10.4L. All three air fryers come with dishwasher safe baskets and drawers. In terms of colour options, all three are available in black as standard, but the Duronic and Ninja also offer a white version if that suits your kitchen better.
Understanding Heat Bleed in Divided Drawer Air Fryers
If you are completely new to divided drawer air fryers, there is one important concept you need to understand before buying: heat bleed. A model like the Ninja Foodi has been designed with a solid wall to separate and insulate its different compartments, meaning you can cook two foods at completely different temperatures without any heat transfer between them.
All three of these divided drawer models, however, experience some form of heat bleed. That is not necessarily a deal breaker, but you do need to be aware of it. In practice, you may find that you need to set the temperature of the cooler half of the drawer lower than you normally would, and keep a closer eye on whatever is cooking in that section.
There is also a noticeable difference in the build quality of the dividers between these three models. The Duronic divider is much thinner and essentially does nothing more than keep the two batches of food from physically touching each other. When tested with different temperatures, after just 10 minutes both sides of the drawer had reached exactly the same temperature, meaning the heat had bled through entirely.
Because of this, the better solution with the Duronic is to simply use the two separate drawers rather than relying on the divider. And actually, having three baskets in total beats having one drawer with a flimsy divider. So when it comes to design, the Duronic wins this category.
Cooking Performance
You might be wondering how these three air fryers actually perform when cooking. Despite their differences in wattage, price, and build quality, I tested all three by cooking whole chickens, cakes, and potatoes, and I got good results from every single one of them. That is actually part of the reason I made this video, because the cooking results alone are not distinct enough to be the deciding factor between these models. So let us look at how they compare across other important areas.
What Is Included in the Box and Accessory Availability
The Cosori is the only one of the three that comes with anything extra in the box, which is a set of silicone tipped tongs. When it comes to third party accessories, the Ninja benefits most from its market dominance. There is a wide range of third party accessories available for it, fitting both the full drawer and the divided drawer, including silicone and paper liners as well as racks.
There is slightly less available for the Cosori, but you can still find liners and a rack that fits the whole drawer. For the Duronic, liners are available but I have not seen any racks for it. So for third party accessory availability, the Ninja takes first place, the Cosori comes second, and the Duronic is third.
Also Read: Ninja vs Cosori vs Philips Air Fryer
Energy Consumption and Running Costs
For many people, buying an air fryer is motivated by the desire to save energy and reduce household bills. In terms of power draw, both the Duronic and the Ninja are rated at 2,400 watts, while the Cosori is rated at 2,800 watts. However, the energy picture is more complicated than these numbers suggest. Low wattage does not necessarily mean an air fryer will take longer to cook, and these figures only ever tell half the story.
Unfortunately, because I was not yet running my energy tests when I reviewed the Ninja Flexdrawer, I can only compare the energy consumption data for the Duronic and the Cosori. Based on that data, the Duronic is cheaper to run. However, because of the missing data for the Ninja, I am not going to declare a winner in this category.
Guarantees, Customer Support, and Spare Parts
Both the Cosori and the Ninja come with a two year guarantee and good customer support. The Duronic only offers a standard one year warranty. When it comes to spare parts, you can purchase replacement crisper plates, drawers, and dividers for the Ninja, and you can even buy the air fryer body without the drawers if needed.
The Duronic sells replacement drawers. The Cosori does not have an online shop where you can buy spare parts at all. So for guarantees and spare parts availability, the Ninja wins, with the Cosori and Duronic sharing second place.
Features and Functionality
All three models share some common features, including a sync function that lets you duplicate settings from one side of the drawer to the other. The Duronic has 10 presets, which appear to be recommended cooking times and temperatures with no variation in fan speed. The Ninja offers seven cooking functions and the Cosori has six.
The Ninja is the only one of the three with windows in the drawer, which is a handy feature for checking on your food without interrupting the cooking process. The Cosori stands alone as the only split drawer model on the market with four heating elements, two above and two below, although the jury is still out on how useful those bottom elements really are in practice. The Cosori is also the only one of the three that connects to an app, though due to UK legislation you cannot actually start or stop the air fryer remotely through the app.
Overall, the Cosori wins on features, although only you can decide how many of those features are genuinely useful to you.
Drawbacks Unique to Each Model
Every air fryer has its downsides, so here is what to be aware of with each model. With the Duronic, the build quality is noticeably lower than the Cosori and Ninja. The crisper plates in particular feel almost flexible, and the plus and minus symbols on the control panel are actually reversed, which is a strange oversight.
With the Ninja Flexdrawer, there is a raised ridge on the bottom of the drawer that restricts your options when placing a large dish inside without the crisper plates. With the Cosori, many users have reported that the high gloss control panel scratches easily, even when cleaned with a soft cloth.
Temperature Range
The Ninja and Cosori both offer a temperature range between 35 and 240 degrees Celsius. The Duronic offers a slightly narrower range of 30 to 200 degrees Celsius. On top of that, I found the Duronic often struggled to reach its maximum temperature when both drawers were running simultaneously. So for temperature range and consistency, it is a joint win for the Ninja and the Cosori.
Overall Scores Before Price
Adding up the scores across all categories so far, the Ninja leads with 13 points, the Cosori follows with 12 points, and the Duronic sits at 10 points.
Comparison Table
| Feature | Ninja Flexdrawer | Cosori TwinFry | Duronic AF34 |
|---|---|---|---|
| Capacity | 10.4L | 10L | 10L |
| Wattage | 2,400W | 2,800W | 2,400W |
| Dishwasher Safe | Yes | Yes | Yes |
| Colour Options | Black, White | Black | Black, White |
| Divider Build Quality | Good | Good | Poor |
| Heat Bleed | Yes | Yes | Yes |
| Cooking Functions | 7 | 6 | 10 Presets |
| Window in Drawer | Yes | No | No |
| Heating Elements | 2 | 4 (Top and Bottom) | 2 |
| App Connectivity | No | Yes | No |
| Third Party Accessories | Excellent | Good | Limited |
| Temperature Range | 35 to 240C | 35 to 240C | 30 to 200C |
| Guarantee | 2 Years | 2 Years | 1 Year |
| Spare Parts Available | Yes | No Online Shop | Limited |
| In Box Extras | None | Silicone Tongs | None |
| RRP | £269.99 | £199.99 | £149.99 |
| Overall Score | 13/15 | 12/15 | 10/15 |
| Best For | Performance and Features | Best Value Buy | Budget Option |
Pricing and Final Verdict
Now for the part that changes everything: price. The Duronic has an RRP of £149.99. The Cosori TwinFry is priced at £199.99. And the Ninja Flexdrawer comes in at £269.99.
If you can find the Ninja at a significant discount, then absolutely go for it because it tops the scoring chart. However, when it comes to the overall Best Buy recommendation, that has to go to the Cosori TwinFry. I will be honest, it would have been more convenient for me if it were not the Cosori winning again, as it also took the top spot in my dual draw comparison. But I cannot argue with the facts.
Read More: Philips 5000 Series Dual Basket Steam Air Fryer Review
