Disadvantages of geothermal pumps

Geothermal heat pumps - advantages and disadvantages:

A heat pump (geothermal heating) draws electricity from the grid and thus drives a compressor that draws additional heat from the ground or groundwater (in the worst case from the air). This means that for one part of electricity, there is an additional 2 to 3 parts of free heat from nature.

Advantages of geothermal heating

  • Can only be used economically in well-insulated houses
  • Little space required, no storage space required
  • Absolutely safe operation (with the exception of the possibility of leakage of frost protection in probes or absorbers)
  • Completely automatic, therefore very convenient
  • Low operating costs if the house is properly insulated and low-temperature heating surfaces (wall heating, underfloor heating) are installed.
  • For environmental reasons it is preferable to an oil or often a low-temperature gas heating system. Often, however, gas condensing heating or wood pellet heating is more environmentally friendly.
  • Positive for SOLAREIS storage systems that use latent heat and direct solar energy.

Disadvantages of geothermal heating

  • Can only be used economically in well-insulated houses
  • Investment costs are higher than with other heating systems. Always do a total cost calculation.
  • For the bathroom, an electric radiant heater is often also required, which can heat up the bathroom quickly
  • An additional system is advantageous for hot water preparation, but this causes additional costs. The TOP charge of the Solareasy heat pumps is a very useful way of optimizing energy use.
  • The life cycle assessment of many heat pumps is worse than that of pellet heating systems, since the electricity in winter comes to a large extent from fossil fuels (if no solar system is available. SolarEis heat pump technology means a lot of solar use by the absorber and the use of energy from Icing.
  • Hot water heat pump: Calculate whether the hot water preparation with the heating (in winter) and a solar system (in summer) is cheaper.
  • Large space requirements in the garden with pipe coils in the garden and new garden layout or expensive deep drilling without performance guarantee, air heat pump often a strong source of noise (think of neighbors)
  • The maximum possible flow temperature is limited or the coefficient of performance drops drastically. In the case of radiator heating and poorly insulated buildings, this can mean too low a temperature level and be expensive to maintain (so caution is advised when replacing heating systems without thermal renovation).
  • No guarantee of heat output with geothermal probes - the owner of the house takes the full risk!
  • The client is liable for damage in the groundwater area or due to lowering of the groundwater level!
  • Groundwater heat pumps require suction and injection wells. Oral wells can "ocher", which means that they then become muddy.

This list of advantages / disadvantages is based on www.energiesparhaus.at.

You can find more information about heat pumps here.