Heating, Ventilating and Air Conditioning System (HVAC) and Method for Upgrading a HVAC System

摘要

A method for upgrading a HVAC system (40), wherein the HVAC system (40) comprises an air guiding structure (8) configured to guide an air flow (34) generated by the HVAC system (40). The method comprises the step of arranging an ultraviolet (UV) light source (4) in a position, in which the light source (4) emits UV light (36) irradiates the air flow (34).