Ground Source Heat Pumps

Pipes concealed in the ground extract the heat in the earth allowing the ground source heat pump (GSHP) to distribute it around your home via radiators, underfloor and hot water systems. Working on a similar method to a refrigerator a ground source heat pump circulates antifreeze in the pipe work, absorbing heat into the liquid in a continuous process, therefore raising the temperature in order to deliver all the warmth necessary for domestic dwellings.

As the ground stays at a constant temperature, the heat pump can be in operation all year round. This may be costly you may ask, however, heat pumps deliver heat at lower temperatures over a longer period of time. This is a more efficient way than gas or oil boilers which switch on and off accordingly.

The sum of heat you require for the size of your property determines the length of the ground loops, but if space is scarce bore holes can be drilled vertically into the ground. The loop system is laid flat in trenches roughly 1.4m deep whereas bore holes run to a depth of up to 200m for a domestic property. Heat pumps do require electricity to work but this doesn’t exceed the benefits.


  • Could lower your fuel bills, particularly if you replace conventional electric heating
  • Could provide you with a financial incentive through the government’s Renewable Heat Incentive (RHI)
  • Could lower home carbon emissions, depending on which fuel you are replacing
  • No fuel deliveries needed
  • Can provide you with all of your heating and hot water requirements
  • Minimal maintenance required


Is your garden suitable for a ground loop?
It doesn't have to be a large garden, but must be suitable for digging trenches or boreholes with accessibility for digging machinery. As a general rule of thumb, if you can get two of your houses into your garden then you should have enough space.
Is your home well insulated?
For the heat pump to be effective your home must be well insulated and draught proof.
What fuel are you replacing?
The heat pump will pay for itself much more swiftly if it is replacing an electricity, oil or solid fuel heating system.
Is the system intended for a new build?
Merging the fitting with other building work can reduce the cost of installing the heat pump and associated works.
How much will it cost?
To fit the system will cost on average £11,000 - £15,000, with running costs depending on the size of your home and quality of insulation.
How much will I save?
Savings will vary subject to which system you are currently using and whether you are eligible for the renewable heat incentive (RHI)
What maintenance is required?
Heat pumps have a warranty of seven years, with an annual check recommended by manufacturers. Workmanship is covered by a two year warranty and insurance backed by an approved MCS provider.
01257 255825