How Many Return Air Vents do I Need?
You’ll want at least one return air vent on each floor of your home (if not in every room) for efficient air circulation. The number of air vents you need will depend on the size of your home. Ideally, you should have an air vent in each room except for your kitchen and bathrooms.
Rely on Return Vents
The return vents in your home carry the air from your rooms back to your air handler to be heated or cooled. They work hand-in-hand with your system’s supply vents to keep your home comfortable with filtered air, heated or cooled.
Catch Wind of the Season’s Direction
If your system heats and cools you may have high and low return registers with blades that can be open or closed. These are commonly found one above the other on interior walls. The low return will be about 12” off the floor and the high return will be about 12” down from the ceiling. In the Summer, the high return should be open and the low return closed. This will take the heat out of the room to be cooled. This is reversed during the heating season, with high returns closed and low returns open.
The More, the Airier
So how many air vents do you really need? It all depends on the size of your home. It’s best to install an air vent in every room of your house, except for the kitchen and bathrooms.
Your cooling system circulates the air already inside your home, so to relieve stress on your system and increase the rate of airflow, you’ll want to have multiple air vents around your home to stay comfortable and for your system to work efficiently.