An energy-saving farm stacks insulation materials on a hot water line, installs a plate ring to form a space, and stacks re insulation materials to effectively insulate to have almost no change in a water temperature. The energy-saving farm reduces energy by preventing the reduction of the water temperature supplied to a reservoir (03). The energy-saving farm comprises a boiler a hot water line, insulating materials, a plate ring, a space, and a valve.COPYRIGHT KIPO 2014온수라인에 단열재르 쌓고 판링(plate ring)를 설치하여 공간을 형성하고 재 단열재를 쌓으면 효과적으로 단열이 되어 수온의 변호가 거의 없다는 점이다.
