Ranked as one of the top hospitals in the country, John Muir Medical Center is a showcase for excellence in everything they do – from medical care to building design and construction best practices. When they decided to turn existing space of the building’s 2nd floor into a new endoscopy surgery unit they decided to repurpose the existing mechanical system serving the space. Pretesting, however, indicated inadequate airflow, resulting in unacceptably low levels of exhaust throughout the unit.