There are so many reasons why its important to get your HVAC cleaned.
Some studies have been shown that indoor air can be 2 to 5 times more polluted than the outside air. The pollutants in your home can contain dust, pollen, mold spores, animal dander and much more. These materials collect in the furnace, air conditioner and duct surfaces. You can clean most of these materials that land on your floor and furniture, but the ducts are hidden from your view and can only be reached by professional duct cleaning equipment.
If you don’t have your systems cleaned professionally you will be breathing in all of those toxic materials and has potential to cause asthma to act up, more dust to clean on furniture and furnace air flow issues.
If you are having furnace airflow problems. There could be significant blockages with in the system that when removed will increase airflow. Cleaning debris out is much less expensive than re-routing ducts to try to increase flow.