What is a KlimaHaus

A building (house, office, school, etc…) that combines the need of living with respect for the environment, built for the welfare of its inhabitants, which consumes little energy and saves money to the user.

The basic principle is to minimize the energy demand and cover the remaining, minimum requirements with renewable energy.

KlimaHaus stands for comfortable buildings and very low energy consumption.
It does not indicate an architectural style but an energy category. Everyone can choose the style and construction system they prefer, you can create KlimaHaus masonry, wood or concrete structure and brick.

There are the following 3 classes that express the energy consumption of a building (remember that to be a KlimaHaus need a minimum Class B):

KlimaHaus Gold classification – (Passive Houses): exhibits the lowest energy consumption of the three classes, with a heating energy consumption of ten kilowatt-hours per square metre annually, requiring practically no active heating system. KlimaHaus Gold is also called “one-litre” construction, as it requires one litre of oil (or a single cubic metre of gas) per square metre each year.

KlimaHaus A classification: with a heat consumption of less than 30 kilowatt-hours per square metre annually, are also called “three-litre” buildings because of their usage of three litres of oil (or three cubic metres of gas).

KlimaHaus B: a building’s heating energy consumption must be under 50 kilowatt-hours per square metre annually – the so-called “five-litre” category, which requires not more than five litres of heating oil (or 5 cubic metres of gas) per square metre yearly

The building must have a very insulated building envelope: in vertical walls, the roof and to the ground, because otherwise the heat is dispersed, and because the “hot” surfaces increase the living comfort. The thermal bridges must be eliminated, because they are the cause of heat loss and condensation problems (at times of mold) on the inner surfaces.
Another weakness of the building are the windows, you must be used tinted windows, which are able to store solar energy. The house starts to save energy when it is designed: exposure and form are important aspects, the sun and its heat are part of the construction concept of these homes.
As for the thermal plants, we are seeing a real revolution, lose power and gain intelligence, that is, ability to integrate with various forms of renewable energy (solar, geothermal, etc …).

Why choose KlimaHaus?

What sets KlimaHaus from other buildings, is that it is a construction that is controlled and certified by an independent public body: the KlimaHaus Agency, which refers to the Autonomous Province of Bolzano. To it are increasingly turning interested people from other regions of Italy for the seriousness of the certification which is considered a mark of quality. The certification is a guarantee for the end user, only at the end of the building controls will get the certificate and plaque.
It ‘a matter of pride for us designers to certify our work with this system, because it is also proven quality of our work.

Anyone, builder, designer or end user can decide to realize and certify its construction.
The certification process is a process of construction quality, is the only certification system that provides for the control of all the buildings, one by one, with verification of the project but mostly the building during construction. For these reasons, this model was born in the Bolzano Province, has spread in the rest of Italy and is increasingly valued by experts as the most virtuous Constructors Companies that want to focus a lot on the quality, but also by citizens who they can avail themselves of a valuable monitoring tool that protects their investment on home.

An Energy Certification with the quality mark

The energy performance certificate and KlimaHaus plaque are the cornerstones of the certification system, while the positive image associated with the KlimaHaus concept attracts more and more builders and homeowners.

The KlimaHaus plaque to be affixed on the building

Among the construction certifications, the energy performance certificate, issued by an independent office authorized, has a particular function, since it is a document with the quality mark. Particularly important is the fact that the energy classification of the building is made following an investigation on the same during the whole process of implementation, and not only on the basis of a simple project.


The energy certificate immediately highlights the extent of the heat demand of a building, and has two energy classifications: The first concerns the class of insulation of the building, the second quality of thermal systems. With the help of a table divided into colored boxes, from green (low energy requirements) to red (high demand), even beginners can understand if a building consumes much or little energy. The heat thermal index is determined on the basis of relevant factors from the point of view of energy, through a unified calculation procedure.
Clients can thus calculate the average heating demand and energy of a building, and a comparison between the different buildings.