Fresh Air. Healthy Living.

Frequently asked Questions

Here you will find further information about our products or general topics.

If you have any further questions, we will be happy to answer them personally. We will also help you with the calculation of your room sizes and your air purifier needs.

Urgent question?

Please write us a message or give us a call.

How long is the guarantee for an air purifier?

For private customers, the warranty period is 3 years on all models.

For business customers such as companies, public institutions, etc., the warranty period is 2 years on all models.

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Can I rent an air purifier Just Air Berlin?

Yes, you can rent an air purifier.

Time(Month)Price(Euro)*incl. 19% Mwst
159,95 €
2-649,95 €
6-2439,95 €

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How often do I have to change the HEPA 14 – Filters?

It is recommended that the HEPA 14 Filter needs to be replaced once every 1-2 years.

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Can I run the Air Protector one at night?

The Air Protector One has a night mode, The control panel LED light will be dimmed in night mode, and the speed level of the ventilation system will be reduced to lowest level.

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How do I know the HEPA 14 filter needs to be replaced?

The Air Protector One has a reminder function and notify Users when the HEPA14 filter should be replaced. From a period of time 3000 – 10000 working hours (depending on the workload), it is recommended to replace it. When the time is reached, the filter indicator light will turn red. After replacement, press and hold the filter button for 3 seconds to reset the time.

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Which shipping method do you use?

DHL, Hermes etc. according to customer’s needs.

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Can I hear the Air Protector One?

The noise level of the Air Protector One depends on the strength is has been set and can also be adjusted automatically. Since the noises of the fans at level 1-2 (25-35db) are barely audible, the air cleaner can run during normal working hours and in automatic mode. At maximum power level 4 (55db), the noises of the built-in blower are clearly audible, so we recommend these power levels for intensive air cleaning, e.g. during breaks or when no one is in the room. This way, it ensures a particularly low noise level.

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What is a normal AQI?

The Air Quality Index ( AQI) can be categorized from Good to dangerous. AQI would state as Good when the range is between 0 to 50. When the AQI is between 51 to 100, it will state Moderate to alert us that the air quality might cause health concerns for certain group of people.

50-100 Moderate
100-150Unhealthy for sensitive groups
150- 200Unhealthy
200- 300 Harmful 
300- 500Dangerous 

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What is a healthy humidity level?

In general, the relative humidity value is 50%, but the optimal value is different in every room. The value in living, sleeping and working rooms should be between 40-60%, in the kitchen between 50-60% and in the bathroom between 50-70%.

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What is PM 2.5 and how different it is from PM 10?

Particulate matter (PM) refers to tiny particles or droplets in the air with a diameter of 2.5 micrometers or less. PM 2.5 are so tiny that they can enter the Bronchia and the Alveoli, while the PM 10 can only reach the nasal cavity, its just the matter of the size between PM 10 and PM 2.5. Both can be associated with health concern issues, since the particles are so small that can transmit deeper into our respiratory system.

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When is a safe level of CO²?

When the CO2 level is at under 1,000 ppm it will be categorized as Good. As long as CO2 level is under 2,000 ppm it will still be categorized as normal. However, when the CO2 level is over 2,000 ppm then it might be cause headaches, sleepiness, and feeling of stuffy air.

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What is CO² ppm?

The carbon dioxide (CO²) concentration is measured in ppm. Ppm is the abbreviation for “parts per million” i.e. 1 ppm = 1 times 10-6. Carbon dioxide levels can rise very quickly in poorly ventilated rooms.

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What is VOC (Volatile Organic Compounds)?

VOCs are volatile organic compounds that are usually used for indoor air quality assessment, for which there are recommendations from the Federal Environment Agency (Umweltbundesamtes) with regard to the maximum values. VOC are gaseous and vaporous substances of organic origin in the air at room temperature or higher temperatures. VOCs include aldehydes, alcohol, hydrocarbons, benzene, but also many other organic compounds that are formed in biological processes.

( Resources: )

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What is TVOC?

TVOC – Total Volatile Organic Compounds

TVOC can be explained as all the VOCs added up together. To be simple, TVOC are a group of thousands of organic chemicals that evaporate at low temperatures.

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What is an Air Quality Monitor?

The Air Quality Monitor is a multifunctional product which can detect:

  • Carbon dioxide (CO)
  • Total Volatile Organic Compounds (TVOC)
  • Particulate Matter 2.5, 1.0, 10 
  • Air quality index
  • Temperature
  • Humidity

The air quality detection device, combines multiple air sensors with a built-in fan to allow real-time monitoring of Carbon dioxide (CO), Total Volatile Organic Compounds (TVOC), PM 2.5, PM 10, PM 1.0, temperature and humidity on its digital LED display.

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Which model would I choose?

The Air Protector One is ideal for rooms of 30 m2 or more. For smaller rooms, we can often recommend our smaller, less expensive units.

However, the size of a room is not 100% decisive. You should also consider how many people are usually in the room or take the room height into account.

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At what speed level is it best to run Air Protector One?

It is recommended to use Auto-mode running through the day for normal daily use.

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For which room size is Air Protector One recommended?

Air Protector One is recommended for room size up to 100 m2.

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How much electricity does Air Protector One need?

The consumption of electricity depends on which speed the device is running, it varies from 35W to 85W. 

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Can I clean the HEPA filter?

The HEPA 14 filter cannot be washed. It is advised that the HEPA 14 filter should be replaced every 1-2 years.

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Can I clean the activated carbon filter?

The activated carbon filter can be cleaned by a vacuum cleaner. Do not use water to clean this filter.

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Can I clean the pre-filter?

Clean the surface of the pre-filter with a vacuum cleaner or wash it with water and then dry it completely before installing it back to the device.

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How does Air Protector One works?

Air Protector One is equipped with  two HEPA 14 filters. The HEPA 14 filter has a cleaning efficiency of 99.995% at a particle size of 0.1 to 0.2 nm and can remove virus, bacteria, pollen and pollutants such as smoke, dust and formaldehyde etc. Also it will emit anions to improve air quality.

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How many square metres does Air Protector clean in an hour?

The Air Protector One is able to clean 800 m3/h.

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How many speed levels does Air Protector One contain?

The Air Protector One has 4 levels, low, middel, high and Turbo.

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Where is suitable for the operation of Air Protector One?

Air Protector One is ideally for air purification of classrooms, indoor playgrounds, retirement homes, offices, restaurants, canteens, bars, homes and rooms of up to 100 m2.

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What is PM2.5?

Fine dust with an aerodynamic diameter of less than 2.5 microns (PM 2.5) poses a health threat mainly due to its small size. Fine particles can penetrate deeper into the respiratory tract, stay in the respiratory tract longer, and cause lasting damage to the lungs.

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Why is air purification important and for whom?

An air purifier filters out mould, spores, germs, virus, bacteria, pollen, tobacco and cigarette smoke, gases, house dust, fine dust, animal hair and odours such as garlic. It is ideally designed for schools, restaurants and offices. Thus, air purification is not only suitable for allergy sufferers, but for every household, especially for people who live near streets, cook a lot and as well as for households with smokers.

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Why do we need an air purifier?

Since Human eyes do not have the ability to detect or sense the indoor air quality, sometimes the level of fine dust and harmful particles can be many times higher than the normal. However, we do spend a large amount of our lifetimes indoor and breathe up to 10,000 liters of air every day. Therefore, the quality of air is essential to our health.

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