Heat source ground water

Both surface water and ground water can be used as heat sources. Surface water is only applicable in exceptional cases. There is  danger of dirt (algas, suspended substances) and also the problem of variation in temperature during the year (snowmelt).

Normally, ground water is used as heat source for water/water heat pumps. Ground water has a constant temperature of about 10 °C throughout the year , which is relatively high. This leads to a high coefficient of performance. The heat pump unit can be operated monovalent.

You have to consider higher development costs, as injection and conveying wells have to be drilled for utilisation of ground water.

Basically, this has to be authorized by the water supply division!

Prior to the decision of using ground water as heat source it has to be checked if ground water is available in adequate depth in sufficient quantity and quality. The water analysis and the construction of the wells have to be organised by an experienced well builder.

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