There is some debate among HVAC specialists, the EPA, and other researchers who have conducted formal studies as to why and how often homeowners and businesses should have their HVAC ducts cleaned. There is, however, one point on which all these factions can agree: air ducts are magnets for filth, debris, and mold. Reduced airflow through the ducts means the HVAC system must work harder to maintain a comfortable temperature. The easiest way to explain central air conditioning and heating systems is by comparing them to the circulatory system and the arteries that transport blood throughout the body. The buildup of cholesterol and fatty deposits in the artery wall leads to a blockage, which forces the heart to exert more effort and pump blood faster to push the same amount of blood through the obstructed region. Upon failing to take action to address this issue, the artery will eventually become blocked, potentially resulting in a heart attack or stroke. Similarly, the accumulatio...
