Osterley Park as part of the National Trust’s Renewable Energy Investment (REI) programme tendered a project for a complete new heat pump system.

A water-source heat pump system was installed to provide heating and hot water to the house and stable block. It provides a reliable and energy efficient heating solution for Osterley Park.

An array of coils was installed in Middle Lake which extract the natural heat produced in the water through heat transfer. Underground pipes bring this heat from the lake to the heat pumps located in the basement of the house, which bring the water temperature up to suitable temperatures for both conservation heating for the show rooms, and comfort heating for the café and offices.