4 Critical Signs You Need Duct Cleaning
By Service Rank USA Team
Homeowners often ask, "How do I know if my ducts are actually dirty?" Since the ductwork is mostly hidden behind walls, it can be hard to tell. However, there are four major indicators that should prompt an immediate call to a professional.
1. Visible Mold Growth
If you see mold growing on the hard surface of your ducts or on other components of your heating and cooling system, you have a problem. Mold requires moisture to grow, so this also indicates a humidity issue. Since many sections of your heating and cooling system are not accessible for a visible inspection, ask the service provider to show you any mold they say exists.
2. Vermin Infestation
Ducts can become a highway for rodents and insects. If you hear scuttling noises in your vents, see droppings near registers, or smell something foul (like a dead animal), your ducts are likely compromised. Insects and rodents leave behind bacteria and feces that are hazardous to breathe.
3. Clogged with Dust and Debris
If you see "poofs" of dust releasing from your supply registers when the air turns on, your ducts are excessively dirty. You might also notice that the filters need changing much more frequently than usual, or that dust settles on furniture immediately after cleaning.
4. Unexplained Respiratory Illness
If family members are constantly suffering from allergies, coughing, sneezing, or sinus congestion while at home—but feel better when they leave—your home's air quality is likely the culprit. Dirty ducts circulate allergens continuously, preventing sensitive individuals from finding relief.
What to do if you spot these signs?
Do not attempt to clean ducts yourself with a shop vac; you will simply stir up the dust. You need professional negative pressure equipment.