In order to answer that question, it is best to understand what exactly is involved in a Building Automation System. BAS Controls is a whole network of devices and sensors which actually change calibration and position on a regular basis. Dampers, valves, and other end devices need to be checked to confirm they are operating through their control range. Sensors need to have their calibration and sensing accuracy checked. Programs need to be adjusted and system updates need to be regularly installed to adapt to an ever changing set of operating conditions so that the system produces its best performance in terms of energy, environment, and social aspects of its operation. Implementing a routine Preventative Maintenance will ensure no issues arise and that all of your systems are running to their optimum efficiency.