“…A subset of these efforts emphasize energy savings in the range that would constitute "deep" retrofits and/or whole-house/systems-engineering approaches that view homes as integrated sets of systems (e.g., Amman 2006, Baechler et al 2011, Bianchi July 2011, Boudreaux et al April 2012, Boudreaux et al October 2012, Gordon et al 2012, McGeough et al 2012. Like the case studies incorporated into these types of documents, there are numerous case study-style descriptions that emphasize technologies, energy savings, and financial elements in existing homes of differing ages, styles, and conditions in various parts of the country (e.g., Donnelly 2012, Drumheller and Wiehagen 2004, Gordon et al 2012, Parker et al 2012, Rowley et al 2012). …”