Affordable rental housing is critical for low-income Americans, but many apartments are in need of repair and come with higher energy bills. Increasing the energy efficiency of rental housing saves energy, improves residents’ health and comfort, and maintains reasonable rents. This helps families, communities, and affordable building owners. Additionally, many states require utilities to invest in programs that support energy efficiency. Improving the energy savings in these apartments, by sealing drafty doors and windows and insulating water pipes, for example, helps utilities meet their mandated goals.