This Handbook of Integrated and Sustainable Buildings Equipment and Systems is a direct result of the American Society of Mechanical Engineers (ASME) initiative on Integrated/Sustainable Building Equipment and Systems (ISBES) which has the objective of filling voids in the literature and motivate advances on integrated mechanical systems in buildings. The main focus of this first Volume of the Handbook is on integrated energy systems in the built environment. The handbook includes current state of knowledge in areas of energy equipment and building energy modeling tools, and emerging topics in a wide range of areas encompassing combined heat and power, building energy storage systems, and advanced control strategies for mechanical energy systems in buildings. In addition, the integration of renewable energy and passive cooling and heating strategies as well as the latest advanced techniques to analyze energy demands at the neighborhood and city scales are addressed. The contributors have a diverse set of skills and extensive experience in building energy engineering. The main audience for the Handbook are practitioners building engineers and researchers seeking current and emerging topics in a single source. The first handbook of the ISBES initiative highlights the state-of-the art in energy systems for buildings and has four different but very important focus areas: • Developing and promoting innovative energy efficient design strategies; • Integrating renewable energy generation into buildings and building systems; • Integrating power generation systems into building heating and cooling systems; and • Integrating energy strategies at neighborhood and city-scales.