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Ground Source Heat Pumps

Heat your Home with Energy from the Ground 

Ground source heat pumps use pipes which are buried in the ground to extract heat stored there. This heat can then be used to heat radiators, underfloor or warm air heating systems and hot water.

A mixture of water and antifreeze is circulated around a loop of pipe called a ground loop which is buried in your garden. Heat from the ground is absorbed into the fluid which then passes through a heat exchanger and into the pump. If space is limited a vertical borehole can be drilled instead.The ground stays at a fairly constant temperature and so the Ground Source Heat Pump can be used all year round. 

The Benefits

  • Consistent ground temperatures through the year offer a highly efficient heating system up to 4.5 times that of a traditional heating system.
  • Greatly reduced carbon emissions.
  • Reduced reliance on fossil fuels makes it a good all round solution for rural   properties.
  • Can be used for cooling or heating when using fan convectors or underfloor   heating as the emitter source.
  • Could provide you with an income through the Governments Renewable Heat Incentive (RHI).
  • Needs little maintenance. 

 Is a Ground Source Heat Pump Suitable for my Home?

If you answer yes to the below points then your home will be suitable for a Ground Source Heat Pump:

 

  1. Is your garden suitable for a ground loop? It doesn't have to be particularly big but the ground needs to be suitable for digging a trench or a borehole and accessible for digging machinery.
  2. Is your home well insulated? Your home needs to well insulated for the a Ground Source Heat Pump to be most effective.
  3. Will you be using underfloor heating or warm air units? Ground Source Heat Pumps perform better with underfloor heating and warm air units rather than radiators because of the lower water temperature required. 
  4. Is the system intended for a new development? Combining the installation with other building work can reduce the cost of installing the system.

Cost & Savings

Installing a typical system costs around £9,000 to £15,000. Running costs will depend on the size of your home and how well insulated it is.

Your savings will depend on what system you have now and will be affected by heat distribution, fuel costs and using the controls appropriately.

Below are the savings you might make every year in an average 4 bedroom detached home with an average Ground Source Heat Pump installation:

Existing System Savings per Year RHI Income per Year
Gas £395 to £590 £2,325 to £3,690
Electric £650 to £1,215 £2,325 to £3,690
Oil £650 to £1,035 £2,325 to £3,690
LPG £1,265 to £2,000 £2,325 to £3,690
Coal £575 to £990 £2,325 to £3,690

RHI

By installing a Ground Source Heat Pump you may be eligible to receive payments for the heat you generate from the Governments Renewable Heat Incentive. This currently pays the owner of an MCS certified system 18.8p per kW generated.

It is also eligible for the Governments Green Deal Financing which lets people pay for energy-efficiency improvements through savings on their energy bills. Click here for more information.

 

 

 


How it Works


Ground Source Heat Pumps

 

In the same way that your fridge uses refrigerant to extract heat from the inside, keeping your food cool, a ground source heat pump extracts heat from the ground, and uses it to heat your home. A ground source heat pump system has three main parts:

 

  • The Ground Loop - Usually a sealed pipe loop buried in the ground by means of a bore hole or horizontal trench;
  • The heat pump unit – Sized accordingly to suit the system which incorporates the refrigerant cycle components required to generate the heat required;
  • The heat distribution circuit– Usually in the form of underfloor heating or traditional radiators for heating. For domestic hot water a traditional storage cylinder can be used. 
  • Restrictions

    The main restriction to fitting a ground source heat pump is the land space available to install the ground collector loop. To find out if your property is suitable for a ground source heat pump visit our FAQ section or contact us for a no obligation site survey.


     

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