Valsir Ariosa HV 250 m3/h Controlled Mechanical Ventilation with enthalpy exchangerValsir Ariosa HV 250 m3 h Controlled Mechanical Ventilation with enthalpy exchanger The technological innovation that began with AriaSilent finds its culmination in the new Ariosa HV CMV units by Valsir ; this new range of CMV systems for residential applications , entirely Made in Italy , combines technology and functionality, in order to offer progressive solutions that are simple to install and manage. Valsir Ariosa HV represents the new standard