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.

Levoit
Core 400s

The Levoit Core 400S is a powerful and intelligent air purifier that has been specially developed for large rooms. With a coverage of up to approx. 184 m², it is ideal for living, sleeping or working areas. Thanks to the advanced AirSight Plus technology, the device scans the air quality in real time and automatically adjusts the fan speed to ensure optimum filtration performance. The 3-in-1 HEPA filter system removes up to 99.97% of particles such as dust, pollen, smoke and odours, thus ensuring a healthy indoor climate. The sleep mode is particularly practical, ensuring an undisturbed night’s sleep with a noise level of just 24 dB. Operation via the intuitive VeSync app or voice assistants such as Alexa and Google Assistant also emphasises the user-friendliness. One negative aspect, however, is that the replacement filters are only available from the manufacturer. The Levoit Core 400S offers a successful combination of efficiency, modern technology and appealing design that fulfils even the highest demands.

  • Cleans large rooms effectively
  • Intelligent control via app and voice assistant
  • Quiet operation in sleep mode
  • Replacement filters only available from the manufacturer

The first impression

Packaging and contents

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 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 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

Cardboard box is very sturdy and protects the air filter well

100

Points

Sustainability Packaging

Basically good, but plastic film should be avoided for sustainability reasons

80

Points

Package contents & scope

In addition to the device, the HEPA filter and operating instructions are included

100

Points

Instructions for use

Multilingual instructions enclosed

100

Points

TOTAL

95

Points

Weighting: 20%
*Themaximum score is 100 points

The Levoit Core 400S air purifier leaves a thoroughly positive first impression when unpacked. The device is delivered in sturdy packaging that is adapted to the product size and effectively protects the product from damage during transport. It is particularly positive that no superfluous packaging material has been used. Nevertheless, plastic film is sometimes used, for example for the filter, which slightly impairs the sustainability of the packaging.

The scope of delivery includes the air purifier with a pre-installed 3-in-1 HEPA filter as well as a detailed and clearly worded instruction manual that makes it easy to set up. All components are securely stowed away so that the air purifier arrives at the customer’s premises undamaged and free from scratches or dirt.

Overall, the packaging impresses with its functional protection and clear structuring of the contents. There is only room for improvement in a greater reduction of plastic materials in order to increase environmental friendliness. The entire unpacking experience emphasises the high quality standards of the Levoit brand and immediately gives the user the feeling of holding a high-quality product in their hands.

The first time in your hand

Product processing 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

Timeless design

100

Points

Processing

Very good quality, product looks high quality

100

Points

Stability

Very stable

100

Points

Sustainability of the product

No details, but use of high-quality materials

90

Points

TOTAL

98

Points

Weighting: 20%
*Themaximum score is 100 points

The Levoit Core 400S air purifier impresses with its modern and timeless design, which blends harmoniously into a wide variety of living environments. The slim housing in the colour white gives the device an elegant appearance that is both visually appealing and functional. Particularly noteworthy is the well thought-out arrangement of the controls and the display, which enable intuitive use thanks to touch controls.

The workmanship demonstrates the usual high quality of the Levoit brand. The materials are carefully processed, all components are precisely assembled and without any recognisable weaknesses or faults. Even on closer inspection, nothing is left to be desired in terms of stability and durability. The device feels robust and gives the impression of being able to withstand the stresses and strains of everyday life without any problems.

Another plus point is the solid construction of the air purifier, which guarantees reliable operation even after prolonged use. Although the manufacturer does not provide any specific information on the sustainability of the materials, the high quality of workmanship indicates that the appliance is designed for a long service life.

Overall, the Levoit Core 400S combines a sophisticated design with outstanding workmanship. It not only fulfils aesthetic requirements, but also impresses with its functionality and durability. These features make it an ideal choice for users who value quality and style.

This is 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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Volume during operation

Extremely quiet in sleep mode, the volume increases with higher programmes

90

Points

Operating instructions and user-friendliness

The instructions are very clearly written

100

Points

Odour neutralisation

Very good neutralisation of odours

100

Points

Room coverage

The air purifier is also effective in larger rooms

100

Points

WLAN and app connectivity

The air purifier can be easily operated via app and voice control

100

Points

TOTAL

98

Points

Weighting: 45%
*Themaximum score is 100 points

As part of our practical test, the Levoit Core 400S was thoroughly tested under various aspects. The volume measurements revealed excellent values: In sleep mode, the noise level is just 24 dB, which is barely audible and ideal for use in bedrooms. At higher power levels, the air purifier logically becomes significantly louder.

The air purifier showed impressive results in the odour neutralisation test. Within an hour, it was able to almost completely remove unpleasant odours such as smoke, and the subjective assessment by test persons confirmed its effectiveness. Room coverage was also tested. Here, the device was able to efficiently supply a room of approx. 180 m² with clean air and showed uniform air quality at various measuring points.

The operation and user-friendliness of the Core 400S proved to be intuitive. The VeSync app enables simple control, while the connection to the Wi-Fi remained stable and reliable. All functions, including auto mode and sleep mode, responded quickly and flawlessly. Overall, the Levoit Core 400S fulfils its advertising promises and proves to be a powerful air purifier for large rooms.

Test plan

A detailed insight into the evaluation criteria of the practical part of the test and the distribution of points can be found here. If you are also interested in the evaluation of our other test criteria, please read our document on the evaluation process.

Price/performance ratio

and ratings from consumers

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? We also look at the consumer reviews and check whether the critical and positive reviews are actually justified.

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? We also look at the consumer reviews and check whether the critical and positive reviews are actually justified.

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Price / performance ratio

Very good performance in the mid-price segment

80

Points

Rating cut

4.7 out of 5.0 on Amazon

85

Points

TOTAL

83

Points

Weighting: 15%
*Themaximum score is 100 points

On the Amazon platform, consumers rate the product with an average of 4.7 stars. The pleasant volume and effective air purification are positively emphasised. We were also able to confirm this positive impression in our test.

Prices of up to €249.99 are charged on the Internet for equivalent products. Very affordable products are available from as little as €64.00 . The Core 400s air purifier from Levit is therefore currently in the middle price segment with a price of €182.59. For the quality and performance received, the price-performance ratio is very good.

Overall result

1. packaging & contents

20%

95

Points

2. product processing & appearance

20%

98

Points

3. in the practical test

45%

98

Points

4. price/performance & consumer reviews

15%

83

Points

TOTAL

95

Points

*Themaximum score is 100 points

Core 400s
of the brand
Levoit
achieved
95
Points in our test and therefore passed. The test was carried out in the test period
11/24
and is stored in our database under the licence number
240925016
. 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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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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