Most dryers in homes in the past had short efficient runs out the basement window making maintenance easy for homeowners and renters. However, as more homes, condos and apartment complexes have dryers installed on upper levels dryers are located in areas with long concealed vent runs that can have several elbows making maintenance something that the homeowner or renter can no longer easily do for themselves. It can also be extremely hard at times to tell if you are having dryer vent problems.