An air vent is an opening that allows conditioned air to enter a room or return air to flow back to the HVAC system. Supply vents deliver heated or cooled air, while return vents pull stale air back for filtration and reconditioning.
/ˈeər vɛnt/
An air vent is an opening that allows conditioned air to enter a room or return air to flow back to the HVAC system. Supply vents deliver heated or cooled air, while return vents pull stale air back for filtration and reconditioning.
What’s the difference between a supply vent and a return vent?
Supply vents deliver conditioned air into rooms, while return vents pull air back to the HVAC system for filtering and recirculation.
Source: The Cooling Company
Supply vents push air out, return vents pull air back for filtering.
Air vents appear in most rooms to distribute conditioned air and keep temperatures consistent throughout the building.
Keep vents clear of furniture and dust to avoid airflow restrictions and pressure imbalances.
“Keep vents clear of furniture and dust to avoid airflow restrictions and pressure imbalances.”
Proper vent balance helps prevent door slams, whistling noises, and uneven heating or cooling.
Should I close vents in unused rooms?
Usually no. Closing vents can create pressure imbalances and reduce system efficiency. Ask a technician about zoning options instead.
How do I clean air vents?
Remove the vent cover, vacuum dust from the opening, and wipe the grille with a damp cloth.
Why is airflow weak from one vent?
Causes can include blocked registers, dirty filters, duct leaks, or dampers that need adjustment.
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