This work intends to investigate the level of knowledge and application of environmental parameters, on the part of the professionals of design, during the development of its projects. The existence of powerful tools is known, which helps to support the designer in whom it says respect to the evaluation and insertion of parameters of environmental protection in the projects. However, it is observed that the responsible professionals for the development of projects, mainly designers, seem not to use them. This work intends to investigate if designers effectively makes use of these tools of aid to the project of echoefficient products, and if they do not make it, to understand why this happens. This work also search to understand why a powerful technique of evaluation of the environmental aspects and the potential impacts associated to any product, called Life Cycle Assessment (LCA), is not used by the teams of designers. This technique, if known and used in set with classic methodologies of ecodesign, represents a basic contribution in the reduction of the environmental impact associated to each one of the phases of the life cycle of a product.