Heating, ventilation and air conditioning systems use a lot of energy. They account for as much as 44 percent of a commercial building’s total energy consumption, according to the U.S. Department of Energy. It’s clear why healthcare organizations such as Mercy are automating their HVAC systems to make them more energy efficient. The technology allows Mercy’s facilities department to centrally manage temperature and climate conditions in every room, resulting in millions of dollars in energy savings a year, says Tom Brinkmann, Mercy’s director of facilities maintenance and operations. The…