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Key Info

300-400% efficient
Approved distributors and installers
MCS accreditation
Sustainable heating solutions

Heat Pump

FWT are specialists in the supply and installation of closed loop ground source heat pumps, with many years experience and an extensive portfolio, we install systems throughout South Wales and Southwest England.  We offer turnkey solutions for GSHP installations; that is we undertake all the work needed to get the system up and running from the initial design to installation and commissioning ensuring you get the right system for your home or property.

FWT are accredited installers and distributors for Kensa Heat Pumps, we choose the heat pump best suited to your application from their wide range of heat pumps.



 Closed loop heat pump overview

Ground Source Heat Pumps are not a new idea; they have been around for over 50 years and work on broadly the same principle as the heat pump bolted to the back of a conventional refrigerator. Instead of extracting heat from your groceries and dumping it into the air in your kitchen, a GSHP extracts latent heat from the earth in, for example, your garden by way of pipes buried in the ground, and transfers it into your home for heating and/or domestic hot water.

The heat pump circulates a mixture of water and antifreeze around a loop of pipe, called a ground loop, which is buried in your garden or lake. Heat from the ground or lake is absorbed into the fluid and then passes through a heat exchanger into the heat pump. The ground stays at a fairly constant temperature under the surface, so the heat pump can be used throughout the year, even in the middle of winter.

The length of the ground loop depends on the size of your home and the heat load you require. Longer loops can draw more heat from the ground, but need more space to be buried in. If space is limited, a vertical borehole can be drilled instead. Before any ground source heat pump system is designed or installed a copy of detailed heat loss calculations or SAP (Standard Assessment Procedure) report will be required to establish the heat load on the property.


The benefits of ground source heat pumps

  • Could lower your fuel bills, especially if you replace oil or conventional electric heating
  • Could provide you with an income through the government’s Renewable Heat Incentive (RHI)
  • Could lower your home’s carbon emissions, depending on which fuel you are replacing
  • Does not require fuel deliveries or fuel storage
  • Can heat your home and provide hot water
  • Need little maintenance



Further information is available

Background information on closed loop ground source heat pump systems

Closed loop heat pump costs, savings and earnings

Closed loop heat pump efficiencies, maintenance and impact

Heat Pump Sizing closed loop

Is a closed loop ground source heat pump suitable for me

Main components of a closed loop ground source heat pump system

Practical things to consider before installing a closed loop heat pump system

Step by step guide to installing a closed loop heat pump system

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