The air ducts in your home deliver cool air throughout your house from your HVAC system. Over time, these air ducts can become clogged and dirty. Dirty air ducts can negatively impact the air quality in your home, as well as blow dirt and debris into your living area. However, since you can’t see into your air ducts, how do you know if they need cleaning? Below are five signs that may indicate it’s time for air duct cleaning service.

Mold and Mildew Growth

When your air ducts have visible mold growth, it is time for a cleaning. Mold and mildew can cause damage to your home. It can also lead to serious health problems, including a number of respiratory illnesses.


If your air ducts are infested with rodents or insects, consider a cleaning. If you have noticed an increase in insects and rodents, but cannot determine how they are entering your home, it is possible they have infested your air ducts.

Dust and Dirt

If your ducts are clogged with dust and dirt, this debris is blown into your home. Air quality is reduced and your furniture and other items are continuously covered with dirt and debris. When your furniture and other household items seem to be covered in dust even after a recent cleaning, this could be an indication your air ducts need to be cleaned.

Respiratory Illnesses

If members of your household begin to suffer from frequent, recurring, or long-lasting respiratory illnesses, it may be time to schedule an air duct cleaning. Mold, mildew, or excessive dust can be circulating in the air in your home. Breathing this poor quality air can impact the respiratory health of your family.

Inefficient System

If your cooling system is not working efficiently, it may be time for a cleaning. Dirty air ducts can limit the air flow, causing the HVAC system to work harder than normal to cool your home. This causes system inefficiency and a more expensive utility bill. If you notice any of these signs, schedule an inspection of your air ducts to determine if you need a cleaning. Periodic air duct cleaning can ensure a well-maintained home, a healthy environment, and a well-operating HVAC system. Not feeling the fresh, clean air in your Dundalk home? Call Reliability Home Heating and Air at 443-399-8663, and feel good again in your home.