Commercial Roof-Top Units in Minnesota: Characteristics and Energy Performance


Packaged roof-top units (RTUs) are ubiquitous on commercial buildings throughout the United States because of their low capital cost, reliability and well-developed service and distribution network. There is anecdotal evidence, however, that these systems tend to operate inefficiently and sub-optimally.

To validate or refute this evidence, we conducted a multi-level field study to characterize the RTUs in Minnesota. The objective of this study is to characterize the existing RTUs and the new/replacement market as well as monitor existing RTU energy performance.

This characterization and associated monitored data can be used to inform the improvement or development of utility conservation improvement programs (CIPs) whose goal is to reduce the energy consumption of new and existing RTUs.

Full Report (PDF)
Commercial Roof-top Units in Minnesota: Characteristics and Energy Performance

This project supported in part by a grant from the Minnesota Department of Commerce, Division of Energy Resources through the Conservation Applied Research and Development (CARD) program.