What must be observed for the ventilation of the building?

Health and comfort for the residents are the important goals of any planning. In particular, excellent air quality is essential for this. Good air quality can only be achieved if “stale” air is regularly replaced with fresh outside air. Opening windows twice a day is not enough. Comfort ventilation adjusted to the fresh air requirement is therefore indispensable in every passive house. A regular, secure and sufficient exchange of air in the cold season is only possible with targeted comfort ventilation – this also applies to very ordinary new buildings.

Without comfort ventilation, sufficient air exchange in newly built apartments can only be attempted by regular impulse ventilation: To achieve an air exchange rate of about 0.33 times, the windows would have to be fully opened for 5 to 10 minutes at least every three hours – even at night! In reality, much less ventilation is used in practice.

The air quality is correspondingly poor and the danger of high humidity increases. Because we have no direct perception of the quality of the air in the room and cannot estimate the amount of fresh air actually supplied through open windows, it is difficult even for a specialist to achieve a “just right” exchange of air through window ventilation.

If too little ventilation is provided, the air quality is poor and there is an increased risk of condensation.

If too much air is ventilated, the air becomes too dry and excessive energy consumption occurs.

Welcome to ENERsign® Price Configurator with U-Value window Calculation:

You don’t want to go through the trouble of obtaining various offers, but would like to find out the recommended prices and U-values for our high-quality ENERsign®primus window? Then try our price configurator, here you can put together your desired windows as you wish and try out different sizes and designs.

All you need is the desired dimensions and window types and you can configure immediately. The window price and U-value window will be adjusted automatically, so that you always have an overview and can compare directly.

We are uncompromising in the product we offer:
ENERsign®primus elements with at least triple glazing with a U-value glass of 0.52 W/m²K and a g-value of 53%. Other designs and special glasses are available on request.

Welcome to the ENERsign® U-Value window configurator:

The U-value window is also called heat transfer coefficient and according to the standard DIN EN 10077 it indicates the amount of thermal energy lost through a window to the outside.

The U-value window is calculated using the formula W/(m²K), i.e. watts per square metre and Kelvin. This value refers to the entire window and defines the amount of energy per unit of time that flows through an area of one square meter when the air temperature on both sides differs by one Kelvin. The lower this value is, the less energy or heat the window emits.

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Gesamtpreis (inkl. 19% MwSt)
0€ - 0
Potentially avoided CO2 emissions over 30 years :
Potentially saved energy and CO2 costs over 30 years:
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0 (W/m2K)
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