The preparation of a maintenance and service agreement includes a detailed evaluation of DDC system operation, energy usage and system operation. A DDC system design to log all system set points and ranges of operation is necessary to provide the optimal operation of a Building Automation System. Proper information and expert evaluation of the data will keep a building operating at its peak performance. With these Consultations the service and maintenance will pay for itself in energy savings, increased equipment life span and tenant comfort. As a maintenance contractor TTS has both the tools and the ability to provide these services.