On the opposite end of things, HVAC systems can also be inefficient. If air conditioning vents are improperly sealed or not properly connected, then this will ultimately result in less air being circulated around your home. In order to fix leaking ducts, youll first need to locate the origin of these leaks. Sometimes this is a task better suited to professionals, but this often depends on the size and complexity of the HVAC system. A good rule of thumb is that if you begin investigating leaking ducts but cannot identify the source of these ducts, then it is probably a good idea to call a professional (Air-Rite HVAC) who specializes in airflow issues.