Core Skills Learned: During training at ECA, students will learn how to conduct a residential building audit, identify, and prioritize measures based on Savings Investment Ratio (SIR), and conduct occupant education with the residents of the property. Core skills also include building system relationships, indoor moisture sources and solutions, psychrometer charts and sling psychrometers, visual inspections, thermal & pressure boundary evaluations, duct diagnostics & sealing, insulation techniques & applications, and window & door inspections.