Those measures should therefore be linked to the performance of the equipment or material used for the renovation, to the level of certification or qualification of the installer, to an energy audit, or to the improvement achieved as a result of the renovation, which should be assessed by comparing energy performance certificates issued before and after the renovation, by using standard values or by another transparent and proportionate method.
Ba cheart, mar sin, go mbeadh na bearta sin nasctha le feidhmíocht an trealaimh nó an ábhair a úsáidtear don athchóiriú, le leibhéal deimhniúcháin nó cáilíochta an suiteálaí, le hiniúchadh fuinnimh, nó leis an bhfeabhas a baineadh amach mar thoradh ar an athchóiriú, ar cheart measúnú a dhéanamh trí teastais feidhmíochta fuinnimh a d’eiseofaí roimh agus i ndiaidh an athchóirithe, trí luachanna caighdeánacha a úsáid nó trí mhodh eile trédhearcach comhréireach.