The present invention relates to a disinfection method to be used for cleaning. The invention is characterized in that hydrogen peroxide (H2O2) is drained/transferred from one or more tanks (16) by a liquid pressure created by one or more pumps or gravity, through one or more draining members (6) to one or more draining devices (5), which draining device (5) drains hydrogen peroxide to one or more onto one or more evaporation top surfaces (4ea) of an evaporation member (4e) of a warming/heating device (4), the evaporation top surface (4ea) is at an evaporation angle (4d) of 1 to 30 degrees in relation to the horizontal plane so that the end on the draining device (5) side draining end (4c) is higher than an opposite end of the draining device (5) of the warming/heating device (4), whereby hydrogen peroxide spreads by gravity on the evaporation member (4e) where the hydrogen peroxide (H202) turns into hydrogen peroxide gas, by means of which hydrogen peroxide gas the disinfection is performed, the evaporation member (4e) consists of one or more fibreglass braidings, the airflow area is reduced by one or more air guides (2) on the top side of the evaporation top surface (4ea) of the evaporation member (4ea) of the warming/heating device (2) towards the gas discharge end (4d) whereby the airflow rate is increased towards the gas discharge end (4d).La présente invention concerne une méthode de désinfection destinée à être utilisée pour le nettoyage. L'invention est caractérisée en ce que du peroxyde d'hydrogène (H2O2) est drainé/transféré à partir d'un ou de plusieurs réservoirs (16) par une pression de liquide créée par une ou plusieurs pompes ou par gravité, à travers un ou plusieurs éléments de drainage (6) vers un ou plusieurs dispositifs de drainage (5), ledit dispositif de drainage (5) draine le peroxyde d'hydrogène vers une ou plusieurs surfaces supérieures d'évaporation (4ea) d'un élément d'évaporation (4e) d'un dispositif de réchauffement/chauffage (4), la surf
