When a block of flats is being revitalized, installation of a solar thermal system is usually the final stage. After all the measures are taken to reduce the energy demand of a building (outside thermal insulation, windows replacement, heating control upgrade etc.), then it is the right time to solve the question of efficient hot water heating.
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Solar thermal system with 12 KPR11+ collectors and 2 cascade coupled EcoAir 420 heat pumps.