There are many ways proven to be very beneficial in preventing health problems but duct cleaning isn’t really at the top of the list. According to studies, increase in particle levels such dust and pollen isn’t actually directly attributed to the condition of air ducts. This is due to the fact that the dirt that is inside the air ducts does not really enter or go to the living space. It only sticks to the duct surface thus the air is not necessarily affected.
There are a lot of other ways that can be sources of particles that decrease the indoor air quality of our homes aside from dirty air … read full article “Dirty Air Ducts aren’t the Problem”