Mold can have far-reaching negative effects on ventilation grilles. Not only can it cause a musty smell, but it can also lead to a range of health problems, such as coughing, sneezing, nasal obstruction, itchy eyes, skin irritation, breathing difficulties, nasal congestion, runny nose, headaches and other allergy-like symptoms. Vents are an ideal environment for many types of mold to grow and thrive. The temperature difference between the cold air from the ventilation grilles and the warm air in the room can cause moisture in the air to condense on the surfaces inside and around the grilles. If this moisture is not given a chance to dry out, it can lead to mold growth.
This is known as a temperature differential and usually requires a difference of about 20 degrees for moisture to form. If left unchecked, moisture can even reach the air ducts. When moisture builds up in air ducts as water droplets instead of evaporating, it provides mold spores with the moisture they need to form colonies. The spores will then use substances such as dust, dead skin cells and dirt as a food source. To prevent this from happening, use a rag filled with soap and water to clean the ventilation grille and air ducts before replacing the vent hole. Regardless of the species, any type of mold found on the vents must be cleaned and eliminated immediately in order to prevent further health issues.
Taking preventive measures such as regularly cleaning your vents and air ducts can help reduce the risk of mold growth.
