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Old 10-27-2012, 09:10 AM   #1
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Dryer vent

Are there any restrictions on the length of pipe that should be exposed in house? I ask because I am about to start doing some built ins in our laundry room and a major obstacle is the fact the current solid dryer vent is about 16 inches long and causes everything to be so far away from the wall. I would like to shorten it considerably, but want to make sure that is ok before I do it.

Thanks everyone.


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Old 10-27-2012, 10:49 AM   #2
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A bit confusing. Are you saying pipe from outside vent extends into house 16"? The vent hose is on end of it, then hose runs to dryer? The pipe can be cut back to a couple of inches, long enough to slide hose over it, wrap with foil duct tape and then a hose clamp.

Use metal ducting or heavy metal hose, not thin foil metal, or plastic. Does hose run in straight line? Its better to have sharp turns solid pipe than flex hose. Two 45's rater than one 90. There are flat round to rectangular 90 degree adapters for behind dryer and to vent. Rectangular ducting is about 3" thick.
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Old 10-27-2012, 05:30 PM   #3
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Welcome to the forum!

this link will provide you with the code requirements for dryer vents. http://publicecodes.cyberregs.com/ic..._15_sec002.htm the only restriction I am aware of in the length of a dryer vent is 25-feet is the maximum length. See M1502.4.4.1

I see not reason why you could not shorten the 16-inches you currently have. of course you may need to make changes to what you current have as far as penetration through the wall or floor for the current vent pipe.

Hope this helps!

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