Ventilation and suction with a

Radon ventilation

Would you like to reduce the radon concentration in the basement to a harmless level and improve the indoor climate at the same time? We install intelligent basement ventilation systems.

Radon ventilation
For living room and basement

Radon ventilation system

According to the Federal Office of Public Health FOPH, inhalation of radon forms [1.] next to smoking, the most common cause of lung cancer and leads to 200 to 300 deaths in Switzerland each year. Since the total revision of the federal radiation protection ordinances on January 1, 2018 [2.] homeowners and builders must comply with certain rules regarding radon in new buildings and renovations.

Thus, in living and recreation rooms, the radon concentration must not exceed the threshold value of 300 becquerels per cubic meter. If the concentration exceeds this value, countermeasures must be taken. An effective and at the same time probably the most cost-effective measure against radon in the house is the installation of a radon ventilation system. [3.]. We install radon ventilation systems. Ask us without obligation.

The radon risk is particularly high in buildings located in an area with high radon contamination (cf. Radon map of the Federation below); in buildings without a continuous concrete foundation and in buildings built before 1960 that have neither moisture protection nor external insulation. In general, the risk of high radon concentration is highest in rooms in contact with the ground.

If you want to find out the radon concentration in your building, you can order dosimeters for radon measurement from a recognized measuring agency, place them in the building for one year and then have them evaluated by the measuring agency [4.].

⇓ «Wegleitung Radon V2.3 02.02.2023» of the Federal Office of Public Health FOPH (German)

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Radon map of Switzerland [5.]: probability of radon concentration in the living space higher than 300 Bq/m³.
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Contact us without obligation

Do you have any further questions or may we prepare an offer for you?

Contact us without obligation. The initial consultation is free of charge. We look forward to your inquiry!

Contact us without obligation. The initial consultation is free of charge. We look forward to your inquiry!

Tobias Bayer
Managing Director

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Questions & Answers

What is radon ventilation?

Radon ventilation is an automatic ventilation system with heat recovery that is installed in radon-contaminated cellars. In addition to lowering the radon concentration, it dehumidifies and improves the indoor climate. This can also have a positive effect on the indoor climate on the floors above. The fans are very quiet and economical in consumption.

What is the cost of radon ventilation for the basement?

We install humidity or time controlled ventilation units with heat recovery from CHF 2'200. Decisive for the effective price are the size of the cellar, the ventilation unit, the effort for the installation as well as the duration of our journey. Cellar ventilation offers effective protection against radon and is at the same time the cheapest measure against radon in the building. Order a non-binding offer now

How does the radon ventilation work?

A humidity- or time-controlled ventilation unit with integrated heat recovery automatically ensures continuous ventilation of the basement. The constant air exchange prevents an accumulation of radon concentration and improves the indoor air climate.

Who is

Since 2010 we are specialized in dehumidification of buildings, which we dry with innovative systems. GmbH is an owner-managed company based in the canton of Bern. Take a look at our References.

How much does a radon ventilation system cost? installs effective cellar ventilation systems to protect against radon from CHF 2,200. The price depends on the cost of installation, the ventilation unit and the duration of the journey. We will be happy to prepare an individual offer for you.

What is the annual electricity cost of radon ventilation?

The electricity cost of Radon ventilation is CHF 25 per year. Our high quality ventilation systems have multi-stage adjustable operation with humidity or time control and heat recovery, and a maximum power consumption of 6 watts.

How does radon ventilation affect heating costs?

Radon ventilation has no noticeable effect on heating costs: thanks to integrated heat recovery can be recovered during the ventilation process 80 % of energy. Compared to manual window ventilation, you can save a lot of energy with basement ventilation.

What are the maintenance costs and expenses?

The filter should be changed every 2 years. Approximately every two to three years, you should also thoroughly clean the ventilation to ensure continuous optimal operation.

How does radon ventilation work?

Radon ventilation ensures continuous exchange of the room air volume in the basement. This reliably prevents the accumulation of radon in the rooms. In addition, the automated ventilation minimizes the risk of mold and moisture damage and at the same time leads to a noticeable improvement in the indoor climate.

How effective is ventilation in reducing radon concentrations?

According to the Federal Office of Public Health FOPH ventilation of cellars is an effective measure for reducing radon concentrations. To be on the safe side, a radon measurement should be carried out following the installation of basement ventilation. In our experience, basement ventilation provides effective protection against radon and is also the most cost-effective measure against radon in the home.

How is the ventilation controlled?

Basement ventilation basically controls itself via e.g. the humidity sensors. Alternatively, the ventilation unit can also be operated via remote control.

What can the radon ventilation do?

Radon ventilation is a humidity or time controlled basement ventilation with heat recovery and integrated filter. It ventilates in and out in both directions and primarily leads to a continuous exchange of room air and a reduction in humidity. As a result, there is a noticeable improvement in the indoor climate. Musty odors are reduced or disappear completely, and the risk of mold is reduced to almost zero.

Why can radon be dangerous in the basement?

Radon is a radioactive gas that has been shown to increase the risk of lung cancer when inhaled. The gas is produced by the natural decay of uranium, which is found in soil and rocks. It enters the basement through cracks and leaks in the soil, where it accumulates if ventilation is inadequate.

Which buildings are at increased risk of radon?

Buildings in areas with high radon concentrations are particularly at risk (see Radon map of the BAG); buildings without a continuous concrete foundation; buildings that were constructed before 1960 and have neither exterior insulation nor moisture protection, as well as all basement rooms in which people reside.

How can I measure the radon concentration in the house?

According to the Federal Office of Public Health FOPH radon can be measured easily and inexpensively by means of so-called «dosimeters», which you can order from a recognized radon measuring station. The measurement should be carried out in addition to the basement in two separate living spaces with longer residence times, whereby the measurement period must extend over at least three months during the heating period.

What radon concentrations are considered safe or harmful?

The Federal Radiation Protection Ordinance has stipulated a reference value of 300 becquerels per cubic meter for radon concentrations in living and recreation rooms since 2018. Concentrations of the noble gas that are below this threshold are considered harmless. However, inhalation of radon should be avoided at all costs.

When is radon ventilation required?

According to the Federal Radiation Protection Ordinance, countermeasures must be taken from a radon concentration of 300 becquerels per cubic meter. Radon ventilation is an effective and at the same time the most cost-effective measure against radon in buildings. Apart from reducing the radon concentration, it has a noticeably positive effect on the indoor climate.

Where do you install the radon ventilation?

The ventilation units are very quiet and can be installed both in the cellar and in the living room. They can be installed in windows, light wells or by drilling a core hole at a suitable point in the outside wall. After inspecting the rooms concerned, we will make you a proposal for the installation of the ventilation system. Contact us without obligation.

What should be considered in terms of installation?

For installation, we need to access the ventilation from the inside and outside. Depending on the height and location of the premises, this may require a lifting platform.

How long does it take to install the ventilation?

Radon ventilation installation usually takes between half a day and a full day.