Substantial energy savings can already be achieved by the most efficient fossil fuel technologies, which would make it appropriate to continue promoting them as class A. As the market for space and water heating products is likely to move slowly towards more renewable technologies, it is appropriate to rescale the energy labels for those products later.
Is féidir coigilteas fuinnimh suntasach a ghnóthú trí na teicneolaíochtaí breosla iontaise is éifeachtúla, rud a fhágann gur iomchuí leanúint iad á gcur chun cinn mar aicme A. Toisc gur dócha go n-athróidh an margadh do tháirgí téimh spáis nó uisce chuig teicneolaíochtaí in-athnuaite ar luas mall, is iomchuí na lipéid fuinnimh do théamh spáis agus uisce a athscálú le haghaidh na dtáirgí sin níos déanaí.