Open Loop System

Ground Source Heat Pump Installations in Birmingham & The West Midlands.

The Open Loop- Ground Source Heat Pump system maybe the most expensive way but is the most efficient choice. The source water extracted  from the water table is most constant at around 12-13 deg whatever season we are in, making the COP (co efficiency performance) by far the best.  Although depending on specification of the Ground Source Heat Pump, an extraction license maybe required if the the Heat Pump requires over 20’000 litres a day as this is all we are allowed to extract.


…These work in the same way as the Closed Loop -Ground Source Heat Pump system but the source of low grade heat comes form the water table via a borehole/well/spring  and a borehole pump. This low grade heat from the water is extracted via the heat exchanger in the Heat Pump it then passes through a compressor that raises it to a higher temperature, which can then heat water for the heating and hot water circuits of the house. The cooled waste water passes back into the ground via a seccond borehole (re-charge hole) where it absorbs further energy from the ground in a continuous process as long as heating is required …and so the cycle continues while we demand heat.


If there is enough yield of water, there is the option to use the borehole/well to also supply the property’s grey water. If it is intended for drinking (potable) then a good filtration tank system will require installing. These are all options to look at before choosing what application is right for you…. See bore hole water supplies page.


A Thormec open loop (GSHP) installation with 3 x 500l DHW Cylinders

    In this image you can see the bore hole for charging and the other for discharge. 

For more information on Ground Source Heat Pumps or for a site visit please contact us. Details on the contacts page.

The Online Business Directory

Reviews of Heatwise Southwest Renewables on the FreeIndex Renewable Energy Companies Directory

Working towards a sustainable future Follow us Facebook Twiter YouTube RSS