A residential air vent is a small opening in a wall, ceiling, or floor that is used to allow air to flow in and out of a building or structure. Air vents are commonly used in residential homes to provide ventilation and to help regulate the temperature and humidity levels inside the home.

There are several types of residential air vents, including:

• Supply vents: Supply vents are openings that allow air to be distributed into a room or area of a home. They are typically located near the floor or in the ceiling, and they are connected to the air handling unit or furnace of the HVAC system. Supply vents are used to deliver cooled or heated air from the air conditioning system or furnace to the various rooms or zones of a building.
• Return vents: Return vents are openings that allow air to be drawn back into the air handling unit or furnace of the HVAC system. They are typically located in the ceiling or on a wall, and they are used to return the air in a room or area of a home to the air handling unit or furnace for re-conditioning.
• Exhaust vents: Exhaust vents are openings that allow air to be expelled from a room or area of a home. They are typically located near the ceiling or on a wall, and they are used to remove stale or humid air from a room or area of a home. Exhaust vents are often used in bathrooms, kitchens, and other areas where moisture or odors may be present.

It is important to properly maintain and clean residential air vents to ensure that they are functioning properly and efficiently. This may include dusting or vacuuming the vents, as well as replacing dirty or damaged air filters on a regular basis.