About Us

Prüfengel offers authentic consumer tests in which real users share their experiences with products. Our tests are based on practical applications in everyday life and reflect the opinions of consumers. As we focus on consumer tests, we do not carry out any material, long-term or laboratory tests. The tests are carried out by 1-2 independent consumers over a period of 7-14 days. The exact test conditions can be viewed in the test plan of the respective test report – click here to go directly to the test plan.

Manufacturers provide the tested products free of charge. We charge a one-off test fee for carrying out the tests. In addition, manufacturers pay an annual licence fee for the use of the Prüfengel seal. We also receive a commission for linking to manufacturers’ websites. These remunerations have no influence on our test results or ratings.

We guarantee transparency and a fair evaluation. For a detailed insight into our comprehensive evaluation process, please click here.

Cosori
Hot air fryer with viewing window

The COSORI hot air fryer with viewing window is a versatile kitchen appliance that has been specially developed for healthy and efficient cooking. With this hot air fryer, you can deep-fry, roast, bake and much more – all with minimal use of oil. The large 6.2 litre capacity provides enough space for larger meals, making it ideal for families. A particular highlight is the large viewing window with interior lighting, which allows you to watch the cooking process without opening the deep fryer. The eight preset programmes and quiet Whisper-Quiet technology ensure convenient and quiet operation. We were impressed by the ease of cleaning thanks to the non-stick coated surfaces and the good workmanship. However, the initial plastic odour, which appeared on some appliances and only disappeared after several runs , was a negative. Overall, the COSORI hot air fryer offers an impressive combination of functionality and convenience, although there is still room for improvement.

  • large viewing window
  • fast preparation
  • Energy efficient
  • Quiet operating noise
  • initial plastic odour

The first impression

Packaging and contents

Here we take a closer look at the packaging. Sustainability is becoming an increasingly important factor. In addition, adequate protection of the product must of course also be guaranteed. Are the contents of the packaging complete and does the manufacturer make it as easy as possible for me to use the product straight away?

Here we take a closer look at the packaging. Sustainability is becoming an increasingly important factor. In addition, adequate protection of the product must of course also be guaranteed. Are the contents of the packaging complete and does the manufacturer make it as easy as possible for me to use the product straight away?

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Product protection

Carton is stable, product sufficiently protected

100

Points

Sustainability Packaging

No unnecessary packaging waste was avoided, but plastic film was used

90

Points

Package contents & scope

Individual parts of the hot air fryer, recipe book and operating instructions

100

Points

Instructions for use

Instructions for use available in several languages, well written and with informative pictures

100

Points

TOTAL

98

Points

Weighting: 20%
*The maximum score is 100 points

Our first impression of the COSORI hot air fryer with viewing window was consistently positive. The packaging proved to be extremely well thought-out and environmentally friendly: unnecessary packaging waste was avoided, which contributes to sustainability. The product protection was excellent; the appliance arrived without scratches or soiling. The package contents included the air fryer itself, a recipe book and operating instructions. The instruction manual, which is available in several languages, deserves special mention. It is well written and contains informative pictures, which makes the initial installation and use of the appliance easier. Overall, the packaging and first impression of the product conveys a feeling of quality and care, which speaks in favour of the COSORI brand. The environmentally friendly packaging and the complete, damage-free scope of delivery leave a positive first impression and speak in favour of the well thought-out product design.

The first time in the hand

Product finish and appearance

Before we start the practical test, we take a close look at the workmanship of the products. How high quality are the materials used? Are the look and feel satisfactory?

Before we start the practical test, we take a close look at the workmanship of the products. How high quality are the materials used? Are the look and feel satisfactory?

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Visual appearance

Attractive design

100

Points

Workmanship

Very good workmanship

100

Points for

Stability

Very stable

100

Points

Sustainability of the product

Use of high-quality materials, two-year money-back guarantee

90

Points

TOTAL

98

Points

Weighting: 20%
*The maximum score is 100 points

The first time you pick up the COSORI hot air fryer with viewing window, the attractive, simple design immediately catches the eye. The aesthetic design is modern and blends easily into any kitchen environment. The workmanship of the appliance is of high quality; all components appear robust and well assembled. This contributes to the overall high stability of the product, which is very important in everyday use. Another plus point is the sustainability of the product, which is emphasised by a two-year money-back guarantee. This guarantee demonstrates the manufacturer’s confidence in the longevity and quality of the deep fryer. Overall, the appliance leaves an extremely positive impression in terms of workmanship and appearance. The combination of well thought-out design, robust construction and a sustainable guarantee policy speaks in favour of the reliability and high-quality workmanship of the COSORI hot air fryer.

What our practical test showed

Does the manufacturer keep its advertising promises?

Our practical test has the highest relevance and therefore weighting. Here, the product has to undergo a wide range of criteria and tests. We check the functions and product promises of the test article.

Our practical test has the highest relevance and therefore weighting. Here, the product has to undergo a wide range of criteria and tests. We check the functions and product promises of the test article.

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Ease of use

simple operation possible thanks to clear menu

100

Points

Functions and performance

many presets and three functions (roast, bake, preheat), viewing window makes it easier to check the food, temperature adjustable up to 230 degrees Celsius

100

Points

Noise level

low noise level during use

100

Points

Cleaning

easy to clean thanks to the coated surface

100

Points

Cooking result

the hot air fryer delivers a very good cooking result – there are many possible uses, which are simply described in the enclosed recipe book – unpleasant odour on first use

95

Points

TOTAL

99

Points

Weighting: 45%
*The maximum score is 100 points

The practical test showed that the COSORI hot air fryer with viewing window fulfils many of its advertising promises. It is extremely easy to use thanks to the clearly organised menu and clear default settings. Users can choose between various functions such as frying, baking and preheating, while the large viewing window makes it easy to check the food being cooked. The temperature can be set precisely up to 230 degrees Celsius, which offers a wide range of applications.
Another advantage is the low noise level during operation, which makes cooking more pleasant. Cleaning the appliance is straightforward, as the coated surface is easy to clean. The hot air fryer also delivers very good cooking results. The enclosed recipe book describes numerous application options in detail, which makes it even easier to use.
To summarise, the COSORI hot air fryer fulfils most of its promises: it is easy to use, offers a wide range of functions and delivers excellent cooking results with a low noise level and easy cleaning. These features make it a valuable addition to any kitchen.

Price/performance ratio

and consumer reviews

Finally, we analyse how the product compares to the competition. Can it keep up with the competition in terms of price and quality? Would we generally recommend buying it?

Finally, we analyse how the product compares to the competition. Can it keep up with the competition in terms of price and quality? Would we generally recommend buying it?

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Price/performance ratio

Very good performance in the lower price segment

90

Score

Average rating

4.7 out of 5.0 on Amazon

85

Points

TOTAL

88

Points

Weighting: 15%
*The maximum score is 100 points

On the Amazon platform, the product is rated with an average of 4.7 stars . Customers praise its versatility and ease of use, but criticise the initial plastic smell of some appliances. A comparison with competitor products shows that the COSORI hot air fryer impresses with its quiet operation and easy cleaning, but still has room for improvement in the quality of the individual components. The average rating reflects customer satisfaction, with most users appreciating the low-fat yet tasty frying results and the practical viewing window, while some complain about the initial odour and scratches on the display.

Prices of up to €200 are charged on the internet for equivalent products. Very affordable products are available from as little as €60 . The Cosori hot air fryer with viewing window is therefore currently in the mid-price segment with a price of €109. For the quality and performance received, the price-performance ratio is very good.

Overall result

1. Packaging & contents

20%

98

Points

2. Product finish & appearance

20%

98

Points

3. In the practical test

45%

99

Points

4. Price/performance & consumer reviews

15%

88

Points

TOTAL

97

Points

*The maximum score is 100 points

Hot air fryer with viewing window
 of the brand 
Cosori
achieved
97
Points in our test and therefore passed. The test was carried out in the test period
08/24
and is stored in our database under the licence number
241305003
. Further information on our test procedure can be found at www.pruefengel.de/testverfahren.

The practical tests are based on careful observations and do not include long-term or laboratory tests. The test judgements reflect the personal impressions and opinions of the testers who try out the products in everyday use. We would like to emphasise that these evaluations do not claim to be exhaustive and may reflect both subjective and objective impressions. The evaluations are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a serious and thorough testing procedure, which has been developed in a long and professional process in close co-operation with our testers.

The practical tests are based on careful observations and do not include long-term or laboratory tests. The test judgements reflect the personal impressions and opinions of the testers who try out the products in everyday use. We would like to emphasise that these evaluations do not claim to be exhaustive and may reflect both subjective and objective impressions. The evaluations are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a serious and thorough testing procedure, which has been developed in a long and professional process in close co-operation with our testers.

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Evaluation process

You can find a detailed insight into our evaluation process, which forms the basis for our product ratings, here:

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Our product evaluations are carried out exclusively through direct, on-site tests. This ensures a detailed and specific examination of the product properties. You can find more information about the test procedure here.

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