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.

4FRESH
Tower fan

Manufacturer’s product description

Especially during the warm summer months or in poorly ventilated rooms, powerful fans are a useful addition to living or working spaces. The two-in-one model tested here. tower fan with air purifier function combines classic air circulation with integrated H13 HEPA filters, which are designed to additionally reduce dust, pollen, and fine airborne particles from the room air. As a result, the device is aimed not only at people seeking cooling but also at those with higher standards for air quality.
The manufacturer promises quiet and energy-efficient operation thanks to a modern BLDC motor, a total of twelve wind speeds, various operating modes, and convenient control via touch panel or remote control. The features are complemented by 60° oscillation, a timer function, and an integrated temperature display.
With a price of €134.99, the device is positioned in the mid-range segment of modern tower fans.

Our test was designed to show how the model performs in everyday use in terms of noise level, airflow, ease of use, stability, and ease of maintenance, and whether the combination of fan and air purifier has been effectively implemented.

  • Two-in-one air purifier and fan
  • Remote control
  • Easy cleaning and filter replacement
  • Noisy at high power settings
  • Packaging lacks sustainability

First impression

Packaging and Contents

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

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

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Product protection

Box is sturdy, product is adequately protected

100

Points

Sustainability of packaging

Relatively large amount of packaging waste, but the plastic film protects the product components

90

Points

Package contents & scope

Complete, including a battery for the remote control and two air filters

100

Points

Instructions

Product is self-explanatory; user manual available in German and English

100

Points

OVERALL

98

Points

Weighting: 20%
*The maximum score is 100 points

The product is shipped in a sturdy cardboard box that reliably protects the fan. Inside, custom-fit Styrofoam inserts ensure secure support during transport. Additionally, the fan itself, the power cord, and the remote control are each individually wrapped in plastic film. While this ensures very safe shipping, it also generates a relatively large amount of packaging waste. More sustainable materials would have been preferable here.
The contents of the package arrived complete and undamaged. In addition to the fan itself, the box contains a remote control with a battery, two filters, and an instruction manual in German and English. The manual is clearly organized and explains all functions in an easy-to-understand way, making setup a breeze.
Overall, the device makes a positive impression upon unboxing. The packaging reliably protects the sensitive components, and the contents are complete. In particular, the included filters and the battery for the remote control are customer-friendly and allow for immediate use after unboxing.

First time in hand

Product build quality and appearance

Before moving on to the practical test, we take a close look at the product’s build quality. How high-quality are the materials used? Are the feel and appearance satisfactory?

Before we put it to the test, we take a close look at the product’s build quality. How high-quality are the materials used? Are the feel and appearance satisfactory?

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Visual appearance

Attractive design, available in black and white

100

Points

Workmanship

Very good build quality, no visible defects

100

Points

Stability

Good stability despite being made of plastic

100

Points

Product sustainability

No information provided

70

Points

OVERALL

93

Points

Weighting: 20%
*The maximum score is 100 points

Visually, the tower fan has a deliberately simple and understated design. The device is available in black and white. We tested the black version. Both color options have a modern and neutral look, allowing the fan to blend seamlessly into living rooms, bedrooms, or offices.
The build quality makes a good overall impression. There are no visible material defects, rough edges, or other manufacturing flaws. The housing is made entirely of plastic, yet it feels sufficiently sturdy and is cleanly finished. The controls and filter covers fit snugly with no noticeable play.
Overall, the device conveys a high-quality impression without appearing unnecessarily flashy. The compact design relative to the unit’s height is particularly noteworthy, allowing the fan to remain comparatively space-saving despite its size.
The manufacturer does not provide specific details regarding the sustainability of production or the materials used. However, due to the high build quality and long-term reusability, the product can at least partially be classified as sustainable. Additional information on material origin or recycled content would nevertheless be desirable.

Here are the results of our hands-on test

Does the manufacturer deliver on its advertising promises?

Our practical test carries the highest weighting. Here, the product must undergo a wide variety of criteria and tests. We evaluate the functions and product claims of the test item.

Our practical test carries the highest weighting. Here, the product must undergo a wide variety of criteria and tests. We verify the functions and product claims of the test item.

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Volume

Clearly audible at around 50% power and above; pleasantly quiet below that

80

Points

Airflow

Customizable in terms of power, direction, etc.

100

Points

Stability

Good stability on various floor surfaces

100

Points

Cleaning & Maintenance

Easy to clean, filters are easy to replace

100

Points

Heat generation

No significant heat generation from the unit

100

Points

OVERALL

96

Points

Weighting: 45%
*The maximum score is 100 points

In practical testing, the tower fan impressed particularly with its versatile adjustment options and the pleasantly even airflow. At low power settings, the unit operates almost silently and is therefore very well suited for bedrooms or home offices. However, at around 50% power and above, the fan becomes significantly more audible, even if it remains within the noise level specified by the manufacturer. Operation is pleasantly quiet, especially in sleep mode.
The airflow performance is impressive overall. The twelve wind speeds offer a noticeable range of intensity, while the 60° oscillation distributes the airflow evenly throughout the room. Thanks to the tower design, the air is also dispersed over a larger vertical area, ensuring that no single point is focused on. Additional features such as a timer, various wind modes, and the integrated air purification round out the positive overall impression nicely.
The stability is impressive despite the comparatively narrow design. Thanks to the wide base and low center of gravity, the unit stands securely on various surfaces. However, caution is advised in households with small children, as tipping over remains a possibility. A positive aspect here is that there are no exposed rotor blades, as found on traditional fans.
Cleaning and maintenance are straightforward. The two filters can be removed, cleaned, or replaced without tools via side flaps. The exterior surfaces can be easily cleaned with a dust cloth or microfiber cloth.
We did not notice any significant heat buildup, even during prolonged use.

Overall, the device impresses with its good airflow, ease of use, and high suitability for everyday use.

Test Plan

You can find a detailed overview of the evaluation criteria for the practical part of the test as well as the point distribution here. If you are also interested in the evaluation of our other test criteria, please read our document on the evaluation process.

Value for money

Finally, we examine how the product compares to the competition. Can it compete with the competition in terms of price and quality? Would we generally recommend purchasing it?

Finally, we examine how the product stacks up against the competition. Can it compete with the competition in terms of price and quality? Would we generally recommend purchasing it?

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Value for money

Very good performance in the mid-price range

80

Points

TOTAL

80

Points

Weighting: 15%
*The maximum score is 100 points

Prices of up to€279.99are listed online for comparable products. Very affordable products areavailable startingat€59.99.The4Freshtower fan is currently inthe mid-price range at€134.99.
The value for money is rated as very good . This rating takes into account both the high quality and performance as well as the mid-range price, resulting in a very good overall value.

Overall result

1. Packaging & Contents

20%

98

Points

2. Product Workmanship & Appearance

20%

93

Points

3. In practical testing

45%

96

Points

4. Value for money

15%

80

Points

TOTAL

93

Points

*The maximum score is 100 points

Tower fan
 of the brand 
4FRESH
achieved
93
Points in our test and therefore passed. The test was carried out in the test period
05/26
and is stored in our database under the licence number
260511002
. 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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