For the 3- to 5-ton high-efficiency Energence® rooftop units, the SmartAirflow™ sensor-based system is available. The sensor-based system is a factory-installed option that measures, controls, and verifies supply and ventilation airflow. SmartAirflow works with an economizer and the Prodigy® Control System on the Energence rooftop unit to accurately manage fresh-air ventilation throughout the day. It provides five independent, adjustable supply airflow settings. To facilitate greater building automation and monitoring, the SmartAirflow system is compatible with optional BACnet and LonTalk® modules, which provide enhanced operational data with customizable diagnostics. Available in efficiencies up to 18.0 SEER, 12.8 EER, and 15.5 IEER, the rooftop units are designed to help building owners reduce energy use during peak demand times while lowering operational costs, said the company. The Environ™ Coil System maximizes reliability and sustainability with a series of microchannels, while the Prodigy Control System offers fast, accurate setup and simplified operation for significant time, energy, and cost savings, said the manufacturer. Additional options are available.