What is the definition of a rapid engineering make up air system? Rapid engineering make up air (REMA) is a specialized type of air delivery system that provides a fast, efficient and cost-effective way to make up for air that is lost due to building ventilation needs. The system typically consists of a series of fans, ducts, and air filters that are designed to deliver air into a building in order to replace air that has been lost due to natural ventilation, exhaust or other processes. The system is designed to quickly and reliably provide the right amount of air to a building and the right pressure to ensure that the building’s air quality is maintained. This system is an important part of a comprehensive air quality management system, as it helps to maintain healthy air for occupants and prevent the build up of contaminants and other airborne hazards. The system is also designed to help buildings meet energy efficiency goals, as the rapid engineering make up air system allows for more efficient air delivery and can help reduce energy