You’re likely familiar with the phrase, “Time and chance do make fools out of us all”. The same is true in this instance; it’s all a simple matter of time and its effects. As these sensitive and easy to overlook areas are often left neglected, seconds turn into minutes, which turn into hours, which turn into days, weeks, months and even years of not cleaning these mediators of air. It becomes increasingly difficult for anything that makes its way into each duct to leave the duct unless one applies intense hot air pressure or simply cleans the interior. Certain particles stick to the duct and must be removed with extra force.