D: A ‘D’ rating suggests that a property’s energy efficiency is average. Such Houses may have to have improvements to lessen energy usage. They are really normally a lot less efficient than A, B, or C rated properties, even so This is when most homes in England Wales tumble. GNP https://epc-rating11644.bloggerswise.com/38983303/how-much-you-need-to-expect-you-ll-pay-for-a-good-sustainable-living