TY JOUR TI MODEL OF THE COST OF HEAT PUMPS TYPE «WATER-TO-WATER» KW energy saving KW heat pumps KW heating KW one-time costs. JO Modern Technologies and Scientific and Technological Progress AU Kuz'min, S.I. AU Krapchetov, P.V. PY 2022 IS 2021 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»