Dryer vent hose

Posted by Ed Hayes on November 17, 2005, 10:27 pm

Can anyone tell me the max length of a dryer vent hose?
Also would it be better to run a steel 4" hose/pipe in place of those
expandable plastic or metal dryer vent hoses.
Thanks

Posted by TURTLE on November 17, 2005, 11:43 pm

This is Turtle.
I got into this on a job when installing hvac system with it. We had a
92+% afue gas furnace to install and had to run a new electric drier
vent to the outside too . we run the two 4" PVC lines side by side and
exited out the eves of the building. It was run 44 feet and 1-- 90
Degree elbow and one 45 degree fitting each on both lines. It worked
fine and was check on the drier like this. We removed the vent line
from the drier and took the temperature of the vent gass. then put the
44 foot vent line back on it and let it run like that for about 10
minutes and check the temperature of the air coming out the eves of the
drier vent and the temperature was 2 degree colder than without the
vent attached.
So you can say 44 feet [ with a 90 degree elbow and a 45 degree fitting
also ] would be a start.
TURTLE

Posted by buffalobill on November 18, 2005, 6:03 am

the old style of plastic has been replaced with the metal. the lenght
may be in your new maytag dryer manual.
your answer is at:
http://fixitnow.com/wp/2003/10/15/appliance-tip-of-the-day-the-ultimate-dryer-venting-guide/

Posted by Appliance Repair Aid on November 18, 2005, 7:38 am

Ed Hayes wrote:
show/hide quoted text
Hi,
show/hide quoted text
http://www.applianceaid.com/vent-length.html
show/hide quoted text
Solid metal venting is always better than the flexable hoses.
jeff.
Appliance Repair Aid
http://www.applianceaid.com/

Posted by Joseph Meehan on November 18, 2005, 7:38 am

Ed Hayes wrote:
show/hide quoted text
The allowable length depends on the dryer as they don't all have the
same needs. It should be indicated in the paperwork that came with the
dryer. Average is about 50 feet with reductions for elbows.
Anything is better than that expandable plastic hose. Non-corrugated
steel pipe is best. Do not connect sections together with screws as the
screws will catch lint and cause buildup. Use the metal duct tape available
in the heating and air conditioning area not cloth duct tape to hold the
sections together.
--
Joseph Meehan
Dia duit

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