This course explores some of the latest products and solutions for improving the air quality, thermal comfort, electric light, and daylight control that can be incorporated into a project. Each improves the wellness of the people in the built environment. Increased evidence shows that indoor environmental conditions substantially influence health and productivity. Building services engineers are interested in improving indoor environments and quantifying the effects. Potential health and productivity benefits are not yet generally considered in conventional economic calculations pertaining to building design and operation. Only initial costs plus energy and maintenance costs are typically considered. A few sample calculations have also shown that many measures to improve indoor air environment are cost-effective when the health and productivity benefits resulting from an improved indoor climate are included in the calculations (Djukanovic et al. 2002, Fisk 2000, Fisk et al. 2003, Hansen 1997, van Kempski 2003, Seppanen and Vuolle 2000, Wargocki, 2003.)