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Geothermal Drilling


By creating boreholes in the earth, geothermal drilling uses the earth as a heat source (in the winter for heating) or a heat sink (in the summer for cooling). This process takes advantage of the moderate temperatures in the ground to boost efficiency and is typically combined with eco-friendly heating systems such as ground source heat pumps and solar systems.

  • Experienced team members
  • Exclusive service in Wales
  • Industry leading equipment
  • Various drilling methods available

About Our Solution

Our bespoke designed geothermal drilling rig offers great flexibility to our customer’s needs. We are the only company in Wales to offer this service, with full geothermal heat pump installation.

We can drill closed loop boreholes up to depths of a 150m, with single or double loop installations. We then install PE100 pipe with either 32mm to 40mm diameter. All loops are flow and pressure tested before being sealed with a geothermal grout. This ensures the correct thermal properties of the loop in the borehole, it also avoids ground contamination of local water sources.

The grout we use is a Thermal Bentonite Grout combined as required with Silica Sands depending on the specification and geological requirements of the ground. This is mixed using our specialised grout mixer and pumped into the borehole to seal the complete borehole from bottom to ground level.

We can also drill open loop boreholes with sizes and depths being drilled to suit the geothermal requirements of the project.

Typical drilling methods we can use include air, air/mist, water and drilling muds. We can also offer simultaneous drilling & casing methods for poor ground conditions with the final borehole finished to a maximum of 150m. Borehole sizes vary from 115mm upwards. This is complemented with our ancillary equipment as required for the complete installation of the works.

We also operate pipework teams for the installation of the borehole loops back to the clients' buildings and manifolds ready for connection to the heating system.

Waterwell Drilling

An additional service offered by our in house drilling rig and team is waterwells. Quotes are prepared on a site by site basis with discounts offered when completed with vertical boreholes for ground source heat pumps.