are that the view behind your dryer closely resembles one of
the pictures to the left. Just like every other home across
the United States with a laundry room that is not in the basement,
the standard practice of running the exhaust pipe is to penetrate
the drywall with a 90-degree elbow. Itís been this way
for many years and likewise the accepted practice.
This obviously becomes a serious fire safety issue. Lint
accumulation and reduced exhaust airflow feed on each other
to provide conditions ripe for a fire. Lint is highly combustible
and decreased airflow causes overheating of the exhaust environment,
demanding excessive cycling of the high temperature limit switch
and eventual failure.
If your clothes are taking longer to dry or if the velocity
of air exhausting from the dryer vent hood is minimal, maintenance
is needed. Clothes dryers are prone to lint build up if
there are numerous 90's in the system or the distance is excessive.
Therefore, the exhaust hood (roof jacks especially), transition
hose and metal ducts should be inspected and cleaned on a regular
It is strongly recommended that the wire bound vinyl ducting
not be used. In most states it is specifically disallowed in
the building codes. Vinyl ducts often collapse causing
blockage and lint build up within the dryer. This type of plastic
or vinyl ducting can ignite or melt and will not contain a fire
within the dryer.
The most preferred material for connecting the dryer to the
wall outlet is the aluminum flexible duct.
According to the U.S. Fire Administration
(Division of U.S. Department of Homeland Security), clothes dryers were involved in
an estimated 15,600 U.S. structure fires, fifteen deaths,
400 injuries and $99 million in direct property damage,
annually, between 2002-2004. The leading cause
of clothes dryer fires
was lack of maintenance (lint build-up in the exhaust system).
The full 2007 report from Homeland Security can be found HERE
The unnatural compressed state of the flex hose reduces the
aperture of the pipe by 18%. Include a couple 90-degree
bends and the result will be an incredible airflow reduction
and efficiency loss in exhausting the lint-laden air.
Optimum airflow is the key to effective dryer performance. The
Dryerbox, when installed correctly will help ensure this efficient
airflow by eliminating the restrictive bends in a typical transition
When clothes are given the appropriate amount of air, they dry
quicker and are subject to less tumbling. This results
in less wear on the clothes and less use of electricity or gas.
In addition to the Dryerbox, you'll also want this
new safety device.