Display Energy Certificates (DEC)



Are you making the most of your Display Energy Certificate assessment?


As we all should know, having a Display Energy Certificate, or DEC, is a legal requirement and must be displayed in public buildings. But are you making the most of the compulsory assessment? You may or may not have noticed that alongside your Display Energy Certificates is an accompanying Advisory Report (AR).

Within the Advisory Report, the building assessor who carried out the DEC assessment will have given some recommendations based on what has been observed during their visit. These recommendations if implemented will improve the efficiency of the building.

The amount of recommendations for improvement will depend on what your assessor observes during their visit. There are four types of recommendations that could be given. These are either short payback, medium payback, long payback or other measures.

You should read the report and take in account any recommendations given.


Do you understand them? If not, then you can contact your assessor and seek additional information. They can explain any queries you may have.

There are many things your assessor may recommend that you take action towards. It could be as simple as cleaning the builds windows and roof light. This then would maximise the amount of daylight entering the room, reducing the amount of artificial light used. This would be a short payback.

A medium payback recommendation would be to consider introducing or improving the cavity wall installation.

A recommendation with a long payback could be to reduce or improve the window glazing as it will keep the building warmer.

After all, if you’re paying for this service, you should be taking full advantage of it.


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