Heating is provided for buildings such as office buildings, factories, and residential buildings in residential areas; Heating and water supply for hotels and restaurants; Heating and cooling of air conditioning systems; Heating station; Central cooling system of air conditioning station; Ground floor heating; Heating of treated water; Swimming pool heating; Sauna heating; Heat pump station; Heat recovery station; Preheating of heated water; Geothermal station; Solar power station; Floor heating; Heating with radiators; Central air conditioning system; Steam condensate heat recovery; Ground source heat pump evaporation and condensation system.