This presentation highlights the findings of a case study of a recycled water heat pump (RWHP) system installed at the Denver Museum of Nature and Science in Denver, Colorado. The RWHP system utilizes the recycled water from the City’s water system as the heat sink and source for the heat pump. This case study is based on the analysis of measured performance data, maintenance records, construction costs, and engineering calculation of the energy consumption of conventional central heating, ventilation, and air-conditioning (HVAC) systems providing the same level of space conditioning as the demonstrated RWHP system.