Solar geothermy presents many advantages, which range from environmental to economical aspects, and which are summarised in the following list:
Solar geothermy does not generate CO2 emissions.
Since geothermy does not use cooling towers, no legionellosis contamination is possible.
From an aesthetic point of view, buildings avoid visual perturbations since there are no cooling towers.
Since the installation requires a small energy contribution, the house is considered as a “zero contamination unit”.
Due to its high efficiency, a geothermal air heat pump does not depend on the external temperature, the system is technically efficient.
The air heat pump does not require fume evacuation chimneys.
The comfort in the house is high because the temperature in the installation is less than 50ºC.
Solar geothermy is the most efficient solution from an economic point of view. The most important energy expense in current households is the cost of air conditioning (heating and cooling) and sanitary hot water; it can represent more than 70% of the energy consumption of a newly built home. So, the savings which can be achieved with geothermy, compared to other systems are:
