
Retrofitting solar thermal energy in existing buildings
Retrofitting a solar thermal system can be environmentally friendly and also attractive from an economic point of view for property owners. Depending on the existing heating system and taking into account the local conditions, a solar thermal system actively supplements the heating or hot water supply. Due to rising energy costs, what has long been standard in new buildings also pays off when it comes to renovating old buildings. The state subsidises property owners with up to 35 per cent of the purchase price. Find out in our guide when it is feasible to retrofit a solar thermal system and what you need to consider before making the purchase.

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