Lowering the carbon and energy consumption of essential infrastructure

What is a Ground Source Heat Pump?

A ground source heat pump is a low carbon heating system that utilises the solar energy stored in the ground. This energy is at low temperature which is elevated in the GSHP refrigeration circuit to a usable temperature. This can then supply heat to a building or process as well as hot water. GSHPs can also provide cooling by rejecting heat back into the ground.

Ground source heat pumps can provide temperatures up to 65°C. As well as heating buildings of all sizes and ages, they can also deliver active or passive cooling.

How do they work?

Ground source heat pumps work by absorbing energy from the ground and compressing the low-grade energy into high-grade heat. They then deliver the heat through a heating distribution system, such as radiators or underfloor heating, for reliable heating and domestic hot water through the seasons.

Ground source heat pumps can produce:

Hot water



What are the benefits?

With the drive to reduce carbon emissions and to become carbon neutral or net zero by 2050 the need for a well-designed ground source heat pump system is paramount and benefits from:

70% reduction in energy consumption

66% reduction in carbon emissions

Reduction in fuel costs

Provides hot water and heat

Can provide cooling

No need for fuel deliveries

Reduction in annual maintenance costs

Maximum efficiency from little input

Providing 400 kW of heat energy for every 100 kW of electrical energy used, a geothermal ground source heat pump system is shown to be over four times more efficient than conventional fossil fuel heating and cooling methods.

80% more efficient than oil

70% more efficient than gas

Our group of specialists

Providing the borehole drilling

Providing the interconnecting pipework

Providing the full Mechanical and Electrical design and installation of pumps, plant rooms, control systems and pipework

Check out a recent project delivered by our group specialists at Eden.

What can G Stow offer?

With our experience in drilling geothermal boreholes, putting us at the forefront of the industry with our established and demonstrable expertise. G Stow install a vertical ground source heating system by drilling boreholes. This allows the ground source heat pump to operate a heat collection system in the ground. Installing a vertical ground source reduces the impact to the local landscape or the requirement for trenches.

Why G Stow?

G Stow PLC’s expertise, logistics and planning ability combined with wide-ranging resources enables us to deliver large ground water abstraction projects for developers of multiple home developments, commercial developments, and industrialists.

We are specialists at working and operating in complex or confined environments including city centres, hospitals, industrial plants, and environmental sites of specific interest. Our geothermal energy team will ensure that all your requirements are fulfilled to the highest standards and compliance.

The right borehole for the job

From energy collectors to vertical collectors, we have the right knowledge and experience to select the right solution for your Ground Source Heat Pump system.

A vertical collector or Borehole draws energy from deeper and is therefore much less affected by the seasonal changes in ambient air and ground temperature, resulting is a higher SCOP value for a borehole collector GSHP compared to a shallow collector.