Connection works in regime of two-stage trailing regulation, at which the thermal set of moistener (10) is divided into first part, including the boiling vessel (106) with water (105) and heating body (7) and into second part including the hose (103) with output (109). Both these parts are thermal connected by going through respiration mixture, heated to required temperature. For the first part is determinate the sensing device (8) tempeof water temperature (105), which is regulated by subordinated regulator, and for the second part is determinate the suborsensing device (9) of oral temperature of respiration mixture, which changes elaborates the main regulator and transfers mixtuthem on subordinated regulator. Main and subordinated regulator are part of microcomputer (1).