This presentation explored challenges and opportunities in achieving energy savings in multifamily buildings from an “on the ground” perspective. Using case studies and examples from recent CEE research and energy-efficiency programs, this presentation provides an overview of technologies and strategies that have proven to be effective and marketable energy-efficiency measures in Minnesota multifamily buildings, including: ventilation system retrofits, optimizing boiler control systems, optimizing condensing boilers, retrofitting trash chutes, and adding demand-based controls to domestic hot water recirculation pumps.