An energy efficiency certificate is an official document that contains relevant data on the energy situation of a home; It indicates if the energy management is efficient or if, on the contrary, there are cold or heat leaks that produce a higher energy expenditure.
Its current importance is undeniable, not only in terms of determining energy savings in homes. Indeed, expert appraisers of movable and immovable property such as Valmesa, say that an energy certificate could increase the value of our homes in the market. Let's see why.
What is analyzed in an energy certificate
Simplifying its objective, we can say that an energy efficiency certificate states, among other things:
1-How much energy our house consumes in lighting, appliances and air conditioning. But, very important also, is that the certificate yields results on the energy we lose, that which is consumed but not used and that represents a useless expense that affects our pockets.
2-In turn, this technical document show how many emissions of carbon dioxide, CO2, we send to the atmosphere while consuming energy in our day to day.
To get there, a technician visits our house and takes note of aspects that can influence the climate of the home, such as:
-All the facades, the material with which they are made and their thickness (the latter is taken into account whether or not it has insulating material). As well as the orientation of these facades.
-Type of property: if it is a residential building, a detached house or townhouses. In addition to the number of plants and the useful surface.
-Features of the house: measures of each room, as well as heights. In this sense, the technician prepares a sketch of the house.
-Environment: the presence and proximity of other buildings, trees, parks, etc. is noted.
-The windows are one of the most substantial points of the analysis, since through these there may be heat or cold leaks.
-Presence of thermal bridges in windows and pillars of facades that generate temperature leaks.
-Another crucial factor in determining the energy efficiency of our homes are the heating, air conditioning and domestic hot water installations.
How to obtain the energy efficiency certificate
After the technician has made the visit and taken all the data, it is time to sit in front of the computer to obtain the energy certificate.
With the help of a computer program (CE3X) it records the extracted data and executes it to get the letter that denotes the energy rating of our home.
In the case of houses and buildings, this rating has a scale that goes from A (the highest energy efficiency) to G (the lowest efficiency).
It is appropriate to indicate that data is added about the location of the house, such as the climatic zone, exact address and its cadastral reference, as well as information about us as owners and the technician.
Additionally, regulations, compliance and non-compliance are updated.
Once finalized and printed, it takes the registry of regional certificates (Board or Generalitat, as the case may be) so that it is an official record of it.
Who prepares the energy efficiency certificate
The energy qualification certificate must be carried out by a specialist technician. Usually engineers, architects or technicians do that have the specific training for it.
In any of these cases I must say that, as is obvious, the technician must visit the house or building that has requested the certificate and remain as long as necessary to obtain all the necessary data.
Is it mandatory to obtain the energy efficiency certificate?
Since June 2013 it is mandatory to obtain the energy efficiency certificate to sell or rent our home.
Benefit provided by the energy efficiency certificate
Regardless of the obligation to order a certificate to sell or rent, this report is undoubtedly useful for us as homeowners because, among its conclusions, the technician will offer us his expert advice to improve the energy efficiency of the property.
Improving efficiency means:
-Save toxic emissions that produce climate change.
-Save money on the electricity bill and other services.
Suggested measures to increase efficiency in more common homes are:
1-Change the sliding windows with folding windows made of PVC and double glazing to avoid loss or gain of heat.
2-Remove thermal bridges.
3-Use programmable heating systems with which we can control the temperature and the ignition time.
4-Install thermal insulation on the facades. This is especially important in old buildings since in the years in which the regulations were built it did not require the installation of insulation.
5-Update home appliances by others to maximum energy rating (A +++).
6-If it is within our reach in investment and space, we could incorporate renewable energy such as solar energy, for example.
7-Improve the insulation of the drawer of the blinds.
8-Find out about aid for energy rehabilitation and take advantage of them.
9-Install more efficient heating systems such as underfloor heating, heat recuperators or radiators with temperature control.
As we can see, an energy efficiency certificate yields fundamental information to improve efficiency in homes, and the advice included by experts can turn our homes into more comfortable places with more responsible energy management.
As buyers or lessees of real estate, this document will give us the certainty about the energy expenditure (and money) that we will have in the future.