The Chimney Safety Institute of America cautions the
public that there’s a growing fire and carbon monoxide poisoning danger that could result in unnecessary deaths, injuries
or property damage – the obstruction or improper venting of clothes dryer exhaust ducts.
To combat dryer
fires and carbon monoxide poisoning, the CSIA recommends that homeowners have clothes dryer exhaust ducts professionally inspected
annually – and maintained as necessary.
Dryer Locations CSIA points out that clothes
dryers have historically either been located in basements or on the main floor of a house and generally within a short distance
from an outside wall. Because of these logistics, the danger of lint plugging the exhaust duct has been minimal.
But in today’s complex and technologically sophisticated homes, many clothes dryers could be located in the inner
core of the house in bedrooms, bathrooms, kitchens and even in hall closets. These new locations mean dryers need to be vented
longer distances and sometimes even with sharp turns and bends to accommodate the structure of the home. These complicated
systems make exhaust ducts harder to reach and also create more places where lint can collect and pile up. Because lint is
incredibly flammable it poses a fire risk.
Natural Gas The availability of natural gas
clothes dryers is another reason why dryer exhaust duct maintenance is necessary. If a gas clothes dryer is not properly vented,
it can cause carbon monoxide to be forced back into the home and that can be deadly.
Obstructions In addition to lint obstructions or improper venting, bird’s nests or rodents and bug infestations can also
plug up a vent causing potential fire hazards or carbon monoxide poisonings. Symptoms of a clogged clothes dryer exhaust duct
include incomplete drying of clothes at normal temperatures and very hot dryer temperatures.
Recommendations
CSIA recommends that CSIA Certified Dryer Exhaust Duct Technicians perform clothes dryer exhaust duct inspections.
We have been formally tested in the proper inspection and maintenance of clothes dryer exhaust ducts by CSIA. When we inspect
a clothes dryer exhaust duct, we check to make sure there are no obstructions and if the installation is correct. We also
verify that the correct type of vent is in use. For example, homes with plastic exhaust ducts are generally upgraded to metal
exhaust ducts.