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GeoTSOL 2025 by Valentin Software GmbH is a professional design and simulation application dedicated to the planning of heat pump systems, falling under the engineering and renewable-energy software category. The program supports minute-by-minute dynamic simulation to calculate electricity demand, seasonal performance factors, operating costs, and further system parameters while considering blocking periods and variable tariffs. Users can select among soil, air, and groundwater heat sources, choose monovalent, monoenergetic, or bivalent operating modes, and combine the heat pump with an auxiliary boiler, solar thermal collectors, or a photovoltaic generator. Such flexibility makes the tool suitable for residential, commercial, and industrial projects where accurate yield forecasts and economic assessments are required. Once the simulation is complete, key results can be transferred directly into a project report that can be handed to clients or authorities. GeoTSOL 2025 is the only version released so far, indicating that the publisher currently maintains a single, continuously updated edition rather than parallel release branches. The software is available for free on get.nero.com, with downloads provided via trusted Windows package sources such as winget, always delivering the latest version and supporting batch installation of multiple applications.
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