The Merle West Medical Center (MWMC)(formerly Presbyterian Intercommunity Hospital) is located in Klamath Falls which is in south-central Oregon. Elevation at Klamath Falls is approximately 4,100 ft and the local climate is characterized by an annual total of 6,500 heating degree days. The medical center complex is adjacent to the Oregon Institute of Technology (OIT) campus at the north end of the city of Klamath Falls. The hospital was originally constructed in 1964 and the geothermal system was added as a retrofit in 1976. Numerous building additions have been completed since--virtually all geothermally-heated