This Eurovent Guidebook provides a comprehensive overview of the rooftop technology. It gives an insight into types, design, applications, operation, selection and maintenance of rooftop units. The Guidebook is the first compendium of its kind developed by the rooftop industry and is a must-read for designers, contractors and investors involved in the HVAC sector. This is the first edition of this guidebook. This Guidebook version is in English. If you are interested in the print version of this document, contact the Eurovent Secretariat (secretariat@eurovent.eu).