HD Services sewage and heat pump system

At a site in Berkshire, HD Services was instructed to install a Sewage Treatment System, Water Supply Borehole, Open-Loop Ground Source Heat Pump and Surface Water Soakaways for a 4-bed detached house. The idea was for the property to be as self-sufficient as possible.

Discharge water from an open-loop GSHP system can feed a harvesting tank, from where it can be pumped for garden irrigation or other ‘grey-water’ uses. The water from the supply borehole can also be used as a drinkable supply (subject to analysis and filtration), meaning that the home owner could save money on water rates. Combined with the independent sewage treatment system, the owners of this self build property save considerably on sewerage and water rates.

Working from building plans and SAP reports, the quote allowed for the supply and installation of a 26-kW Soleco heat pump. The borehole was drilled using a cable-tool percussion rig – the method preferred by the Environment Agency when drilling into the chalk aquifer.

We were involved in the design of the plant room and our plumbing and electrical guides were distributed, ensuring that those on site had information to hand regarding the system requirements. This provided confidence that all required connections were in the right location, making the installation and commissioning of the heat pump a straightforward process.

Work commenced in August 2012 and was completed in 2014. The installation benefits from a 5-year workmanship warranty, an annual maintenance contract for both the sewage treatment system and the heat pump system which is in receipt of the domestic Renewable Heat Incentive (dRHI).

This installation helped H.D. Services Ltd secure a win at the Green Deal and ECO Awards South East region for RHI Installer of the year.

Visit our website to find out more about the project.


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