In data centers, we have maintained relative humidity levels of 45% to 50% for decades, based on the assumption that high humidity is necessary to avoid static discharge problems. That has now changed. The danger to IT equipment from static generation and discharge in the data center environment is insignificant at 15% relative humidity (RH), and can be dropped to 8% RH with only minor precautions, according to a research study, released in 2014, commissioned by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) technical committee TC 9.9 (Mission Critical Facilities, Data Centers, Technology Spaces and Electronic Equipment). That data center humidity revelation can help you save energy and improve your power usage effectiveness ratio, called PUE. If you run higher equipment inlet temperatures in your data center, in accordance with the 2008 and 2011 ASHRAE Thermal Guidelines, maintaining high relative humidity requires adding a considerable amount of moisture; warm air holds more water vapor than cool air. Wasting water and energy to humidify the data center unnecessarily is inconsistent with green practices today. In 2012, ASHRAE TC 9.9 comm...