During the renovation of this listed farmhouse, it was decided to replace the spring fed water supply with a water well. Earthtest Energy suggested that the same borehole could provide space heating and domestic hot water using a Soleco open loop heatpump. The underfloor heating fitted throughout the property uses water at up to 45°C, whilst domestic hot water is heated to 60°C. The installed system generates Renewable Heat Incentive payments of £43,841 plus inflation over seven years, which significantly exceeded the cost of the total installation. Annual savings of £1,800 against biomass pellets, make this cost efficient solution, which also minimises carbon dioxide emissions.