The performance of bioclimatic buildings (those designed in harmony with nature) must be assessed. Is the design effective? Is the indoor climate as planned? Does it meet ISO comfort standards?

To answer these questions, the indoor environment of the Holcim Costa Rica office building was measured during the rainy season of 2004 (August 30 to September 15) and the early dry windy season of 2005 (February 1 to March 15). Most measurements were taken on the second floor, where most of the daily activity occurs from 8 am to 7 pm.