As an HVAC expert, I have seen firsthand the impact that proper maintenance of air ducts and ventilation grilles can have on the efficiency and health of a system. It is crucial to understand the difference between these two components in order to keep your HVAC system running smoothly. Air ducts are essentially tubes that carry air throughout a building, while ventilation grilles are the visible outlets that control the flow of air into living spaces. These grilles can be found on floors, walls, or ceilings and can either expel or suck in air. The ones that expel air are known as supply grilles, while those that suck in air are called return grilles. In order for an HVAC system to function properly and prevent the spread of contaminants in the air, it is important to regularly clean the covers of ventilation grilles.
This is especially important since both the air ducts and ventilation system are constantly working when the thermostat is activated. It is recommended to clean these components every 3 to 5 years for optimal performance. Proper circulation of air also requires the use of multiple ventilation grilles, including both supply and return grilles. These work together to ensure that air is properly distributed throughout a building.
