A system for heating a liquid, the system comprising at least: - a hydrosonic pump for heating said liquid, - a primary circuit comprising at least: - a storage of said liquid, or a heat exchange unit - a plurality of pipes for mutual connection of said storage or said heat exchange unit with said hydrosonic pump - at least one solenoid valve to open and/or close the liquid circulation within said primary circuit , and - an optimizer connected to and placed downstream of said hydrosonic pump , wherein the connection between said hydrosonic pump and said optimizer is ensured by an internal circuit comprising a delivery pipe and a return pipe ; said optimizer cooperating with at least said primary circuit to give and transfer thereto the thermal energy produced by said hydrosonic pump , said optimizer comprising a storage tank : - of reduced volume, intermediate the one of a conventional liquid storage and a hydraulic compensator; - capable of withstanding and working at high pressure; - thermally insulated, characterized by said optimizer comprising at least one sectioning valve configured for controlling the flow rate of said liquid circulating in said hydrosonic pump , placed within the internal circuit preferably along the return pipe of said optimizer , operating and ensuring a temperature gradient ΔToptimizer between an inlet and outlet liquid equal to a threshold temperature gradient ΔTideal between an inlet and outlet temperature of said hydrosonic pump to facilitate maximum efficiency and energy performance. - a hydrosonic pump for heating said liquid, - a primary circuit comprising at least: - a storage of said liquid, or a heat exchange unit - a plurality of pipes for mutual connection of said storage or said heat exchange unit with said hydrosonic pump - a storage of said liquid, or a heat exchange unit - a plurality of pipes for mutual connection of said storage or said heat exchange unit with said hydrosonic pump - at least one solenoid valve to open and/or close the liquid circulation within said primary circuit , and - an optimizer connected to and placed downstream of said hydrosonic pump , the connection between said hydrosonic pump and said optimizer is ensured by an internal circuit comprising a delivery pipe and a return pipe ; said optimizer cooperating with at least said primary circuit to give and transfer thereto the thermal energy produced by said hydrosonic pump , said optimizer comprising a storage tank : - of reduced volume, intermediate the one of a conventional liquid storage and a hydraulic compensator; - capable of withstanding and working at high pressure; - thermally insulated, - of reduced volume, intermediate the one of a conventional liquid storage and a hydraulic compensator; - capable of withstanding and working at high pressure; - thermally insulated, characterized by said optimizer comprising at least one sectioning valve configured for controlling the flow rate of said liquid circulating in said hydrosonic pump , placed within the internal circuit preferably along the return pipe of said optimizer , operating and ensuring a temperature gradient ΔToptimizer between an inlet and outlet liquid equal to a threshold temperature gradient ΔTideal between an inlet and outlet temperature of said hydrosonic pump to facilitate maximum efficiency and energy performance. <EOS>