In 2014, ACEEE launched a pilot program to test a variety of behavioral strategies to promote energy efficiency among tenants in low- to moderate-income multifamily housing in Takoma Park, Maryland. The program included behavioral messaging, events, educational information, and the distribution of energy saving devices. We measured energy use in the months before and after the pilot. The white paper includes these results, insights for the development of future behavioral change programs, and recommended engagement strategies for targeted communities.