Ground Source Heat Pumps

Heat your home from free natural energy from the ground around you...

Ground Source Heat Pumps with Bore Hole

A geothermal heat pump which extracts the heat through a loop passing through a bore hole or multiples of bore holes anything up to 180 metres deep, you require 66 metres of pipe work per kilowatt. Good summers are not that important with this system as the bore hole passes through a larger mass resulting in a fast recovery, but you can also help to put the heat in by fitting passive cooling within the property, which extracts the heat during the summer periods and discharges it back into the ground.

Advantages

Unlike water source there are no annual fees etc.
You can cool your house really cheaply in the summer periods
You can heat your house efficiently and cheaply in the winter with a COP rating of 4.5 to 5
It runs a lot quieter than the air to water system
Minimum amount of disruption
No evidence of the disturbance to the ground when the job is complete

Ground Source Heat Pumps with Loop 1m Underground

A heat pump which extracts the heat through a loop passing approximately 1 metre underground. You require 66 metres of pipe work per kilowatt. You rely on the sun during the summer periods to heat the ground back up again, but you can also help to put the heat in by fitting passive cooling within the property, which extracts the heat during the summer periods and discharges it back into the ground.

Advantages

Unlike water source there are no annual fees etc.
You can cool your house really cheaply in the summer periods
You can heat your house efficiently and cheaply in the winter with a COP rating of 4 to 4.2

The co efficiency of performance or COP of a heat pump is the ratio of the output heat to the input supplied, example, one kilowatt of energy used produces 4 kilowatts. The air unit is more efficient in the summer than the winter, but on average it works out at a COP rating of 3.2 to 4.5. Below is an average cost per kWh for the main fuels, when calculating the heat pump one needs to divide the kWh by the COP example 10p per kWh peak divided by a COP of 4 equals 2.5p per kWh; off peak is 1.4p per kWh.