Your lake Garda property market
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Low energy houses

Certain norms and standards of energy efficiency are nowadays fixed when planning a private home. The property owner will always have to ask himself: How do I glaze my windows or insulate my walls, meating certain standards. But how can I keep my ongoing energy consumption costs as low as possible? At the latest when a property owner tries to answer this question for himself, he will easily stumble over the term low energy-house.

What are the fine details between a ClimateHouse, a zero-energy building, a passive house standard and a plus energy house? And what do all of them have in common?

The common factor is definitely that all three stand for sustainability and future-orientated energy efficiency. Who is building a house, usually follows the standard for new buildings.

Construction standards

Whereas terms like passive house, zero-energy building and energy-plus house aren’t legally protected and therefore have a rather descritpive nature and evolved over time, the ClimateHouse is a certified building label from South Tirol.


ClimateHouse is a certified building label of the autonomous Province of Bolzano, South Tirol, and stands for ecological, energy-efficient and sustainable construction. The specified requirements aren't as severe as they are when constructing a passive-house. continue

Passiv house

The term passive house derives from the fact that a big part of the source of heat of the building comes from passive sources. This standard can also be reached by retrofitting an older building. continue

Zero-energy building

From a purely mathematical point of view a zero-energy building is consuming zero energy on a annual basis. The developement and realisation is more costly but in the long run one is saving significant energy costs. continue

Energy-plus house

The energy-plus house produces more energy than needed. There are so far no fixed standards for this type of house because there aren´t that many yet. continue


In order to build high-efficiency houses two aspects are very important:

  • How can I obtain that my house loses as little heat as possible? For example through the exterior walls or windows etc. The magic word is thermal insulation.

  • How can I generate energy? How can I generate the heat I need? These sources are essential: The solar energy, which comes through the windows, the heat the occupants produce, the heat generated by electrical devices, body heat, the heat produced when cooking, the heat produced by lighting, etc. Important is also the right choice of window glass. And of course the help of photovoltaic systems or wind power stations. It is obviously possible that there is an extra heating need, which is then a crucial factor for the balance of energy, which usually is stablilized annually. Old tubes or boilers as well as a need for a lot of fuel are not of any help. An efficient supportive heating system is therefore very important. And getting the heat from renewable sources. Pellet heating for example. (If district heating piping or natural gas heating is used, it should be optimally regulated by a timer.)

In conclusion it can be said that in theory any zero-energy house can be a passive house. But not every passive house can be a zero-energy house.