An intelligent building management system was needed to monitor the air quality during services and reduce costs without compromising the comfort of those in attendance. A fire alarm system, a central battery system, and generators were integrated using BACnet/IP and the LON protocol. Fan coil unit (FCU) controllers for regulating the room temperature with fan convectors are also controlled and monitored by the our building management system.The integrated solution monitors the temperature and air quality in the main sanctuary on the basis of a specific sequence control developed in collaboration with the planner for the space. The strategy allows substantial energy savings to be achieved and provides for excellent indoor air quality.