The future that awaits us is that of a world increasingly populated, it is estimated that the world population would touch 9 billion people in 2050, and as a result more and more hungry for energy. Climate change that generate temperatures anomalous, brutal winters, or too mild, frost record in areas that are accustomed to other schemes or torrential rain and sudden.
One scenario that will be more and more common, until the interventions of serious and structured will not be able to reverse a route that is already well engaged. And in all this, our house will be ever more a place where comfort and health should be the order of the day, without waste of energy. The efficiency of a house then will not be a simple way to save money, but to save the planet through a conscious use of resources.
From where you start to get a house efficient?
The first step to arrive at the energy efficiency of a house is definitely the energetic diagnosis. And’ a must stop before arriving to make important interventions that will have a home warm in winter and cool in the summer, without costly energy loss.
Let’s talk about a document that after a careful analysis by a qualified professional, to understand where and how to intervene, and gives rise to the most known APE, the energy certificate, mandatory since 2002 for the properties that need to be sold, leased, built ex-novo or restructured for a greater surface area of 25% of the building envelope.
You might think, then, that knowing the energy class of the house, today, our heritage building is located for the most part in the G-class, the most recent in efficiency, would be an automatic diagnosis. In reality, the correct path is precisely related to the diagnosis of energy initial, and often the energy class low suggests that you have not made a correct diagnosis.
What is the diagnosis of energy?
It is a real study of the home, of his real-world conditions and of the possible solutions for intervention in order to maximise the cost-benefit ratio. It starts from the evaluation of the structures, in fact, a house well insulated to limit the migration of heat from inside to outside and vice versa, of80%, compared to a home not thermally insulated. Then you evaluate the fixtures, these leading figures of the energy balance.
Just think, for example, that a window frame is well made can get in to disperse a fifth of a frame old. Finally, we analyze the heat emitters, the distribution and the performance of the system for the production of heat. In general , plants must be analyzed under this new perspective , and interfaced between them for a final painting to be very precise about the amount of savings that may occur after interventions.
To get an idea of the quantity, now on average, if they go up in smoke 18/20 litres of oil per m/year. Doing targeted interventions could reach a consumption of 3 to 6 liters of oil per m/year. No need to add another.
Who to contact for the energy diagnosis
To have an energy audit should be directed to specific professional figures. The Ministry of Economic Development has established that, starting from July 19, 2016 can be considered valid for only the diagnoses made by Experts in energy management (EGE), Energy Service Companies (Escos), or Energy Auditors. The latter must have obtained the certification, and the qualification required in order to proceed. In Italy there is a national list official of these certifiers, but you can ask the professionals that operate in the area, and by the administrator of the condominium by a architect who deals with construction and renovations.
How much do the energy diagnosis
This type of analysis is very accurate, and obviously costs, which, however, will be easily recovered through the benefits arising from the reduction of energy consumption. Indicatively, the cost of a diagnosis for an apartment is around € 300, while that for a villa of two real estate units of residential use, ranges from € 600 to € 1,200. When it comes to a condo, usually you are offered a cost that ranges on average around € 100 per apartment, for the important number of real estate units in the interior.