[1] RdSAP and SAP – The Standard Assessment Procedure is the UK Government’s methodology for assessing and comparing the energy and environmental performance of dwellings.
[1] RdSAP a SAP – Y Weithdrefn Asesu Safonol (SAP) yw methodoleg Llywodraeth y DU ar gyfer asesu a chymharu perfformiad ynni a pherfformiad amgylcheddol anheddau.