Advector Systems. The inVent zoned HVAC system combines an HVAC damper, register, and diffuser into a single aesthetically pleasing unit. The InVent uses horizontal air distribution patterns to manage airflow and reduce drafts. The result is a more effective home-comfort system that evenly distributes conditioned air to balance room temperatures. The inVent dampers are manually adjustable to achieve optimal room temperatures and eliminate the need to condition unused spaces. 817.416.4880. www.advectorsystems.com.