Eurovent Product Group 'Air Handling Units' has published the second edition of its Guidebook on Air Handling Units. On 60 pages in English, the free-of-charge publication provides all essential information on this important piece of technology in a hands-on and neutral manner. The Eurovent AHU Guidebook provides, for instance, valuable information on application areas, functions and components, energy efficiency and life-cycle costs, control system, design and selection, certification, as well as standards. It is not only targeted at producers, but of equal relevance for consultants, planners, architects, testing agencies, and everyone else having to deal with Air Handling Units in their everyday life. This Guidebook version is in English. If you are interested in the print version of this document, contact the Eurovent Secretariat (secretariat@eurovent.eu).