<https://www.thegreenage.co.uk/get-borehole-trench-ground-source-heat-pump/#webpage>
<http://schema.org/description>
"Ground source heat pumps can be a great heating solution, but installation is a complicated process. When might you need boreholes instead of trenches?"
<https://www.thegreenage.co.uk/get-borehole-trench-ground-source-heat-pump/>