Dryer fires now surpass creosote (chimney) fires in frequency on a national level. Annually, there are over 15,600 dryer fires causing over $75.4 million in property damage--many of these fires are caused by blocked air vents that were not properly serviced. Then, there are the indoor air quality issues. According to the American College of Allergies 50% of all illness is aggravated or caused by polluted indoor air. And, the Environmental Protection Agency (EPA) claims that indoor air has been found to be more polluted than outdoor air. This is an alarming statistic, considering that most people spend about 80% of their time indoors. Dirty air ducts have been identified as a major source of indoor air pollution, and they are a proven collection sources for contaminants such as mold, fungi, bacteria, pollen, pet hair and dander.
In addition to improving indoor air quality, cleaning your air ducts can also make your system work more efficiently and last longer. Research by the U.S. EPA has demonstrated that HVAC system cleaning may allow systems to run more efficiently by removing debris from sensitive mechanical components.
According to the EPA, you should have your air ducts cleaned if: