The present paper largely aims to cover the analytical programfor the first year master's course at the Faculty of Installation Engineering withinTechnical University of Constructions Bucharest.Also, the work is an improved version, with manycompletions of the paper “Dynamic behavior of equipment and systemsthermal - ed.Matrixrom, Bucharest, 2008 (3rd edition) - Florin Iordache ”.Most of the chapters that were part of the above work haveunderwent important additions able to facilitate a good understanding of the possibilities ofmodeling of heat transfer processes within equipment and systemsrelated to buildings.There are also new chapters such as the one on pumpsheat and the one related to the hybrid heat supply systems where they arereunited several unconventional and conventional systems: solar, heat pumpand central heating.