• Ducts clogged with dirt and debris has an impact on the overall health of your HVAC system. Its efficiency gets compromise. In summers the condensing coils are not able to cool the air that well. The same thing happens in winter. The heat exchanger coil gets inefficient in heating the air. As a result the unit runs longer and harder to deliver the desired output. This increases your utility bills also leads to faster wear and tear of the HVAC.
• Dirty ducts also lead to insufficient airflow. The HVAC may be running efficiently. But the blower fans are not able to circulate air as they are clogged in debris. The filters are bunged with a layer of matted dust and will not allow air to pass through them. As result you would not feel the comfort that you are looking for.
• The gunk that builds up in the ducts is only made of dust particles. They comprise of many other things that can have dangerous impact on your health. They contain pet dander, dry skin, feces of rats, pollens, allergens, mold spores, dust mites, and many other things. Duct gets leaky with time and allows moisture to trickle in. The moisture settles on dusty layer and allows microbes to actively grow in them. They reach your living space with the air that pass through the ducts. The dangerous allergens settle on tables, smart phones, children's toys, and other paraphernalia of the house.
• Perhaps the most notable danger of dirty air ducts is the fact that they can cause a fire hazard. The debris is highly flammable that can catch fire and lead to catastrophic consequences.