dryer vent reducer/increaser

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JD3
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dryer vent reducer/increaser

Post by JD3 » Fri Apr 13, 2018 9:02 am

I watched your video showing dryer vent replacement. In the video, you used a reducer/increaser going from 4" to 5". Where did you buy the reducer/increaser? I need a 4" to 4.5" but can't find one.


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A. Spruce
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Re: dryer vent reducer/increaser

Post by A. Spruce » Fri Apr 13, 2018 11:21 am

You're not likely going to find one, most pipe comes in 1" increments. Why the odd size?
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Aaron
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Re: dryer vent reducer/increaser

Post by Aaron » Fri Apr 13, 2018 2:19 pm

The crimping/fluting of duct pipe ends will often reduce it by about 0.5'" OD.

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A. Spruce
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Re: dryer vent reducer/increaser

Post by A. Spruce » Fri Apr 13, 2018 5:36 pm

Aaron wrote:
Fri Apr 13, 2018 2:19 pm
The crimping/fluting of duct pipe ends will often reduce it by about 0.5'" OD.
This is something that you have to be extremely careful with because you do not want to create lint traps that can cause clogs, or worse, fires.
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Aaron
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Re: dryer vent reducer/increaser

Post by Aaron » Fri Apr 13, 2018 8:20 pm

Yep, the crimped end of a duct segment has to face away from the dryer. So the air movement goes from the smaller diameter to the larger diameter.

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Shannon
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Re: dryer vent reducer/increaser

Post by Shannon » Sat Apr 14, 2018 7:47 am

Yes as they said make sure the crimped ends face away from the air flow direction in any ducting you do . As mentioned in a dryer this will decrease the collection of lint in the line and make the runs of any ducting more efficient as the air flows with less restriction .
Oh and by the way the reducer or increasers are generally available at most places that sell duct parts but if not a local HVAC shop should have them.
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