January 15, 2018
About 13% of all energy produced in the US is used to heat, cool, and ventilate buildings today. Heating, ventilation, and air conditioning (HVAC) is the largest consumer of energy in commercial buildings, totaling 37% of all energy expended in this industry. Energy is often wasted by heating, cooling, and over-ventilating un-occupied or moderately occupied spaces. The lack of accurate and reliable occupancy information is due to existing building automation and control systems that are limited in their ability to substantially reduce HVAC energy use.