HVAC systems are a ripe target for energy savings across a range of facility types: They typically account for 30 to 40 percent of energy use in health care facilities and college campuses and 65 percent of the energy used in pharmaceutical manufacturing facilities.
Chilled water systems also consume substantial amounts of water. Commercial buildings often draw more water for cooling and heating than for any other use — including the obvious ones. Water consumption varies by climate and building type, but studies show the HVAC system may account for up to 48 percent of a building’s water consumption, with restrooms and kitchens using 31 to 37 percent, and landscaping accounting for only 18 to 22 percent.