Abstract: A computer implemented method for post installation adjustment of a climate system including determining a desired change of at least one radiator flow, determining a change of at least one Cv-value required to achieve the desired flow change, using a software implemented model of the system to automatically calculate a set of radiator flow changes resulting from the change of at least one Cv-value, identifying a subset of radiator flow changes from the set of radiator flow changes which have a perceivable impact on system performance, and repeating the above steps until the subset is empty. The iteration allows an operator to determine a complete set of Cv adjustments that will provide the desired radiator flow change(s) while (as far as possible) leaving other radiator flows unchanged.