The capital costs for a GSHP system are made up of the equipment costs for the heat pump unit, the ground coil and the diustribiont system, the drilling or trenching costs and installation costs. Of these, the costs for the ground coil and its installation are specific to GSHP system and typically form between 20 – 50 % of the total.

The total cost for an installed ground collector (including materials, drilling and backfilling etc.) is between £25 – 40 per metre. For vertical collectors, the drilling costs ca vary between £15 – 30 per metre of borehole. The actual conditions will depend on the availability of the equipment and the ground conditions.

In general, capital costs are higher than for alternative systems mainly because of the costs associated with the ground coil, but costs are being reduced. The cost per kW of installed capacity appears to vary considerably.

Running costs for a system will depend on the electricity costs. Typical running costs for an electrically driven GSHP are about 50% less than for electric resistance heating.

Although most GSHP systems require routine maintenance, maintenance costs for GSHPs are low and so may also result in cost savings compared with alternative systems.