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 material, long-term or laboratory tests. Our aim is to provide honest feedback to help you make a purchasing decision. For a detailed insight into our comprehensive evaluation process, which forms the basis of all our product reviews, please click here.

PETITONE
Heater air vent

In our test, the PETITONE radiator bleeding box made a very good impression. The radiator bleeding box enables very quick and uncomplicated bleeding of radiators without the need for additional tools. Thanks to the supplied instructions for use, this is also possible for beginners and non-professionals without any problems. The heating valve can be easily opened and closed again using the rotary knob and the water flows directly into the tank below. The tool therefore proves to be a practical gadget for bleeding air from heaters.

Advantages

✅ Instructions for use
✅ Practical rotary dial
✅ Quick and easy ventilation of the heating system
✅ Packaging suitable for storage

Disadvantages

❌ Simple processing
❌ Level can only be read in good light

The first impression

The packaging and labelling

ℹ️ Here we take a closer look at packaging. Sustainability is becoming an increasingly important factor. In addition, adequate protection of the product must of course also be ensured.

CriterionRemarkScore achieved*
Product protectionCarton is sturdy, product sufficiently protected100 points
Sustainability PackagingUnnecessary packaging waste was avoided, items were packed compactly100 points
Packaging designPractical and convenient packaging, also suitable for storage100 points
Total100 points
Weighting: 15%
*The maximum score is 100 points
Product packaging of the heater ventilation box

The PETITONE heater air vent arrived in the typical Amazon box. The box was undamaged and was easy to open without any tools. Inside the box was the product in its actual packaging, another cardboard box, but printed with the brand name and product description. The box was not glued and was therefore also easy to open without damaging the box. This means that the box can be securely closed again after opening and can therefore still be used to store the heater deaerator. As it is customised to the product, it securely encloses the heater deaerator and protects it from possible damage during transport. Alternatively, the box can also be recycled as waste paper. Inside the box, the heater deaerator is packed without any additional, unnecessary plastic packaging. The first impression is therefore positive.

After unpacking

Package contents and instructions

ℹ️ Most people’s first impression after unpacking is immediately memorable. Are the contents of the pack complete and does the manufacturer make it as easy as possible for me to use the product straight away?

CriterionRemarkPoints achieved*
Package contents & scopeProduct is one-piece, but complete100 points
Instructions for useWritten in German, easy to understand100 points
Contact informationCan be found in the instructions and on the product packaging, telephone number missing90 points
Total97 points
Weighting: 15%
*The maximum score is 100 points

The heater deaerator consists of a single, fully assembled part. No other equipment is included, but is not required.
In addition to the heater deaerator, there is also a folded instruction manual in the product packaging. The operating instructions are in German and explain how to use the product briefly but clearly in four steps. There is also an e-mail address on the instructions and a QR code for product evaluation.
Further contact information can be found on the product packaging. The brand name is printed here, but this can also be found on the instructions and on the product itself. The address of the company and the name of the managing director can also be found here. However, the address is partially covered by a sticker with a barcode, which can be removed without leaving any residue. Unfortunately, a telephone number cannot be found.

The first time in your hand

Product processing and appearance

ℹ️ Before we start the practical test, we take a close look at the product processing. How high quality are the materials used? Is the look and feel satisfactory?

CriterionRemarkScore achieved*
Visual appearancePractical, but compact70 points
ProcessingSimple, but sufficient80 points
StabilityProduct withstood the test without any signs of use100 points
Sustainability of the productSimple design limits material requirements, metal key ensures durability100 points
Total88 points
Weighting: 20%
*The maximum score is 100 points
Front of the heater ventilation box

The heating air vent consists of a white, slightly translucent hollow body, which later serves as a collection container. The hollow body is semi-circular at the top and rectangular at the bottom. A red rotary wheel, which is connected to a metal shaft, protrudes approximately in the centre of the semi-circle. The hollow body and adjusting wheel are made of plastic, the shaft of brass. An expansion of the hollow body into the interior serves as a bearing for the shaft. The shaft ends in a square spanner suitable for heating elements. It can also be moved axially by about half a centimetre. A shoulder at the height of the spanner prevents the shaft from falling out. There is a circular opening on the back of the hollow body, in the centre of which the key is located. The dimensions of the heater vent are very compact at 105 mm high, 65 mm wide and 35 mm deep.
At first glance, the heater air vent looks inexpensive and functional. However, as there are no aesthetic requirements for a heating air vent and it is usually packed away again immediately after use, this is perfectly acceptable. The design impresses with its simplicity. If the heater deaerator is to be stored for a longer period of time, it also takes up very little space.

This is what our practical test showed

Does the manufacturer keep its advertising promises?

ℹ️ Our practical test is the most relevant and therefore the most important. Here, the product has to undergo a wide range of criteria and tests. We check the functions and product promises of the test article.

CriterionRemarkPoints achieved*
Description of the procedure in the instructionsGood description of radiator bleeding, description of water level control would be desirable90 points
Operating the heating valveEasy and soulful100 points
Collecting heating waterNo spillages, no splashes100 points
Reading the fill levelPossible, but not in poor lighting conditions90 points
Total95 points
Weighting: 30%
*The maximum score is 100 points

Using the heater deaerator works surprisingly well and simply. The instructions specify the steps to be taken. Firstly, the spanner is placed on the valve. It fits perfectly and connects the valve to the rotary knob. The hollow body is also placed directly under the valve as a collection container. The valve can be opened easily and sensitively using the rotary knob. The collection container must be held firmly so that it does not rotate when the valve is opened. Both hands are therefore required for bleeding. Heating water flows into the hollow body without dripping. The valve can also be conveniently resealed using the rotary knob before the collection container is removed. The light transmission of the collection container is sufficient to read the fill level. However, this is only possible to a limited extent in poor light. When the container is full, it can simply be emptied via the opening at the back.
Once the radiator has been bled, the water level in the heater should be checked and topped up if necessary. This is also listed as the fourth step in the operating instructions. The heater deaerator is not used for this. Nevertheless, it would be desirable to have instructions in the operating instructions describing how to proceed. Laypersons have to research this on the Internet. However, a description in the operating instructions would be very useful, especially for people who are not familiar with using the Internet.
All in all, bleeding radiators with the PETITONE heater bleeder is much easier and more convenient than with a separate spanner and collection container. The whole process only takes a few seconds. In addition, the risk of spilling heating water is minimised. The tested heater air vent therefore proves to be a practical and useful gadget for venting radiators.

Price/performance ratio

and ratings from consumers

ℹ️ Finally, we look at 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? We also analyse consumer reviews and check whether the critical and positive reviews are actually justified.

CriterionRemarkScore achieved*
Price / performance ratioGood price/performance ratio 90 points
Rating cut4.5 out of 5.0 on Amazon 75 points
Total 83 points
Weighting: 20%
*The maximum score is 100 points

On the Amazon platform, consumers have given the product an average rating of 4.5 stars. One common criticism is that the heating air vent does not fit all heating valves. Many customers like the ease of use. In our practical test, we were able to confirm that it is really easy to use and can be used to bleed radiators quickly and easily. In our case, the key of the heater bleeder also fitted all the heaters we tested. However, as it is not adjustable, we cannot rule out the possibility that it may not fit on some radiators.

Prices of up to €13 are charged on the internet for equivalent products. Very inexpensive products are available from as little as €5.80. The PETITONE heater deaerator is currently priced at €9.95, which puts it in the mid-price segment. The price ratio is good for the quality and scope of services you get.

Display

Overall result

WeightingScore achieved*
1. packaging & labelling15%100 points
2. package contents & instructions15%97 points
3. product processing & appearance20%88 points
4. in the practical test30%95 points
5. price/performance & consumer reviews20%83 points
Total92 points
*The maximum score is 100 points
Heater air vent
of the brand
PETITONE
achieved
92
Points in our test and therefore passed. The test was carried out in the test period
11/22
and is stored in our database under the licence number
221026002
. 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 observation and do not include long-term or laboratory tests. The test ratings reflect the opinion of our experts and are based on careful analysis. We would like to emphasize that these evaluations do not claim to be exhaustive and reflect both subjective and objective impressions. The assessments 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 reputable and thorough testing process, which has been developed in a long and professional process in close cooperation with our experts.

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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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