Your return and supply ducts are supposed to maintain a balanced air supply. In other words, there should be an equal amount of air entering and leaving your HVAC system. If there is a difference in pressure, expect comfort and efficiency problems. Poor ductwork design and obstructed airflow can lead to similar problems. Contact an HVAC professional if you notice any of the following symptoms of unbalanced air ducts:.
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Supply Vents vs. Return Vents Supplies Supply vents are connected to your supply ducts, which blow conditioned air into your indoor spaces. They are typically smaller than return vents. Most vents have louvers or slats located behind the grill , allowing you to direct the airflow. Returns Return vents are connected to your return ducts, which pull air out of your indoor spaces to deliver to your heating and cooling system.
They are typically larger in size. Never Block Supply or Return Vents! The excess air needs somewhere to go, and that spot is the return vent. Homes built before central air was common often have retrofitted HVAC systems.
When contractors first installed central air, they put in a single big return vent somewhere central in the house. Having several return vents ideally one in every room, but even two or three is better than just one creates consistent air pressure.
If you have one return vent, your home is fine. Keep the doors to each room open so air can properly circulate. If you ever need portions of your ducts replaced, that might be a good time to have a couple more return vents installed. While you should never clean most parts of your HVAC system on your own, you can clean your return vents.
Pull off the metal grate and wash it every so often. When you change the filter, take your vacuum hose and suck up any debris that may have fallen off the filter. Your return vents are an indispensable part of the HVAC system in your house.
They function to keep your interior pressurized as well as the interior air clean as they feed air to the air handler. You need to understand how many return vents you have and also where they lie. When your HVAC system blows air into your home, that changes the air pressure inside. The excess air needs somewhere to go, which area is the return vent.
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