LEED (Leadership in Energy and Environmental Design) is the most widely used rating system for green buildings and available for nearly all building types. The framework is built in the spirit of health, efficiency, and cost-savings, and is meant to advance the industry and improve the built environment for people and planet. In 2019, LEED v4.1 was released with emphasis on performance monitoring and human health factors like indoor air quality. Naturally, the state of indoor climates and the means in which we create them offer an opportunity for construction contractors and building owners.