Many times, the HVAC system is not given much thought. It might only become a focus when something goes wrong. However, an HVAC system that is not being properly controlled can account for 40 % of a facility’s energy costs, as opposed to the more typical 20% – 25% range. This is often due to improper set up and programming of the building automation system, or lack of one altogether. An estimated energy savings cost analysis (ESCA) would demonstrate what savings could be expected by installing a customized Building Automation System or upgrading an existing one.