Energy rating is the process of examination, measurement and calculation (use of a computer essential in practice) of a property, to outline its thermal losses and heating system efficiencies.
An energy rating may be used to issue a label - a label just means an agreed way of presenting the findings of the rating .
For Ireland, the format of the label is decided and controlled by government. There will be small differences between labels throughout Europe, but there is a wish to achieve as much in common as possible possible. procedures and labels will be used, in exact detail, throughout Europe, but there will be a wish to achieve as much in common as possible.