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hoone vundamenti integreeritud soojusvahetussüsteem, mis ammutab pinnasest soojust hoone kütmiseks, heat exchange system integrated into the building's foundation, which extracts heat from the soil to heat the building
energiavai . Energiatehnoloogia, soojustehnika ja soojusenergeetika terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//ene/energiavai/1/est (11.07.2026)
