At Rio Grande Regional Hospital, our team completed a replacement and retrofit of chilled water air handlers serving both the second and third floors. The large custom air handler fed both floors, and new duct work was installed on the second floor. New fan-powered boxes were installed and new Siemens Controls were upgraded to the new equipment. The project became complex during the design stages, however, when we identified the need for temporary cooling to this failed equipment. Our solution needed to allow us to maintain climate control of the third floor and the neonatal wing of second floor during the COVID-19 pandemic. Included in our scope was 1,000 feet of insulated spiral pipe ductwork, temporary chillers and AHU’s ducted across the roof. Equipment was powered using temporary generators for two months during the installation of the new equipment.