Vents are a key part of keeping your home comfortable by directing the flow of air throughout each room. In an HVAC system, supply vents release heated or cooled air, while return vents draw it back for reconditioning. Proper placement and design of vents ensure air moves evenly, helping maintain a steady, comfortable temperature. The effectiveness of vents depends on their type, material, and location. Floor vents work especially well because cool air naturally sinks, while warm air rises, allowing heat to spread evenly. Adjustable slats or dampers let you control airflow, directing it where it’s needed most. Understanding how vents control airflow allows homeowners to improve HVAC efficiency, maintain balanced temperatures, and create a consistently comfortable environment in every part of the home.