A BACnet HVAC controller provides programmable control for heating, ventilation and air-conditioning equipment while supporting communication with compatible building networks. The correct selection depends on the application, operating sequence, connected sensors and required input and output points. Messung BACD offers Distech Controls products for applications including air handling units, chillers, boilers, pumps and cooling towers. Its published ECY-400 and ECY-600 series include web interfaces and functions such as scheduling, alarms and logging. Before choosing a device, project teams should review network compatibility, installation space, expansion needs and configuration requirements. Features vary by model, so the relevant product documentation should guide the specification. As an authorised distributor of Distech Controls products in India, Messung BACD provides engineering assistance, controller selection support, application guidance and commissioning support. These services help system integrators match a BACnet HVAC controller to the equipment and operational requirements of a project.