For two years and a half now, it has been compulsory to be in possession of the energy label if a homeowner wishes to sell or rent their property. It is also required for new properties and those about to be restored, on the condition that refurbishment affects more than 25% of the surface, as well as those of which more than 250 square metres are owned by any public authority and are frequented by the public.

However, a vast number of people are not still aware of this label and, when it is time to carry out a conveyancing transaction, they are required to submit this document and they do not know what to do.

The first question that may arise is: what is it worth? The labelling is a way of proving that your building or property has obtained the energy certificates, including objective information on your energy efficiency, and reference values. All of that allows us to compare and evaluate energy efficiency, as well as become acquainted with the current and future costs of energy supplies.

Energy labelling is rated in terms of a set of energy efficiency classes, similar to those used for electrical appliances, A being the most energy-efficient and G the least efficient. It also includes statistics on yearly energy and CO2 consumption. By managing all these data, labelling is aimed to save money on the energy bill, reduce CO2 emissions in the atmosphere and improve our quality of life.

The fact is that living in an energy-efficient building may imply lowering energy consumption by 70% to 90%, always keeping stable its occupants’ comfort level. And it is not an issue of how we generate heat or cold, it has to do mainly with heat or cold leakages which may occur due to bad closure or insulation systems. For instance, a building with automatic doors allows the separation between the air-conditioned area and the exterior, thus preventing air flows and temperature glide, which makes energy consumption decrease without descending the degree of comfort of the persons living or working in the place.

To obtain this label which evaluates your building’s energy efficiency, you shall contact a competent technician who certifies it. Engineers, technical engineers or technical architects are authorized professionals to endorse this certificate.

Once you have the document with you, it has to be signed at the competent agency of each region, a compulsory step of the process that can be fulfilled either by telematics or in person. Either the building’s owner or promoter have one month from the issue of the document to sign the energy efficiency document.

Two days after the certificate has been signed, you can download the energy efficiency label to stick it on the building for which it has been requested. Energy labels and energy certificates, or energy efficiency certificates, expire 10 years since they have been issued.

The significance gained by energy consumption in our expenses is such, that any reduction is welcomed, which is why knowing whether a building is energy-efficient or not, and what we can do to improve this efficiency are investments that are worth the effort.