Inasmuch as the European Union promotes only energetically viable heat pumps in a given location. the aim of the work is an assessment of whether a ground-to-water heat pump (ground source heat pump: GSHP) can be considered as an ecological heat generator in Polish climatic conditions and those of the energy market. Here. as an estimator. https://www.markbroyard.com/great-pick-ego-sebitar-solution-500ml-supply-limited-choice/