The owner of these 4 star holiday cottages in the picturesque Dulais Valley in South Wales is a keen enthusiast of green energy and since 2006 when the cottages were built they have been heated using ground source heat pumps. In order to benefit from the Government Renewable Heat Incentive (RHI) Commercial tariff new efficient heat pumps have recently been installed. The Problem: The original heat pumps installed to provide heating and hot water for the holiday cottages were from three different manufacturers and although they were still operating, obtaining spare parts proved very difficult and performance was deteriorating. None of the original heat pumps held MCS accreditation therefore they were ineligible for the RHI-Commercial funding. WDS Green

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