Issue 4/2014 of TD Installations Magazine, dedicated to this year’s edition of the ITF Plovdiv, focuses on the hybrid HVAC systems. The article in the HVAC equipment section examines in detail the specifics and the main advantages of those solutions and their possible application areas. Energy positive buildings are presented in the Energy efficiency rubric as an increasingly popular solution in construction worldwide.  The material reviews various technology solutions for sustainable development in the construction and the parameters characterizing a building as ‘plus energy’. In the issue readers can find many other interesting topics as well, such as: Dimming of LED lighting, Access control systems, Shafts and drainage systems, Cordless power tools, etc.