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Dryer Vent 30' Long- Need a "Booster"??

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Dryer Vent 30' Long- Need a "Booster"??

Old 08-20-2020, 08:54 AM
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Default Dryer Vent 30' Long- Need a "Booster"??

So the floor plan of our home has the dryer vent running about 30' feet before it vents to the outside. My wife says the dryer performance is terrible (even after replacing the dryer). So one of the guys told me it is just too far to expect the dryer to perform correctly. Can I put in an "in line" booster blower motor?? I have seen this done in the HVAC world, but not on a dryer. Anybody have any experience, or a qualified opinion? THX!
Old 08-20-2020, 08:56 AM
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Seems like the blower fan would get clogged with lint.
Old 08-20-2020, 09:00 AM
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If you google clothes dryer vent booster fan, you'll see plenty are available.

Try this Tjernlund DBF2 Dryer Duct Fan

Last edited by airbrush; 08-20-2020 at 09:11 AM.
Old 08-20-2020, 09:06 AM
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Originally Posted by pizzacutter View Post
So the floor plan of our home has the dryer vent running about 30' feet before it vents to the outside. My wife says the dryer performance is terrible (even after replacing the dryer). So one of the guys told me it is just too far to expect the dryer to perform correctly. Can I put in an "in line" booster blower motor?? I have seen this done in the HVAC world, but not on a dryer. Anybody have any experience, or a qualified opinion? THX!
What is the make & model of the dryer? Rigid metal ducting?

Should be able to access the installation specs for it - The number of elbows impact the efficiency and make a big difference

Ballpark max run for metal flexible is 30' / rigid 43' and deduct 2.5 feet for each elbow/bend

Last edited by loverofshells; 08-20-2020 at 09:22 AM.
Old 08-20-2020, 09:12 AM
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Make sure bent cap and line are clear. They do need to be cleaned. Also make sure lint screen is clean. Some dryer sheets will coat it.
Old 08-20-2020, 09:25 AM
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I have this one, it works well. the only issue is sometimes it will start by itself even with out the dryer running, and tries to suck out the air conditioning in the laundry room. There is a pressure switch adjustment that I have played with but it does not seem to matter. This seems to happen on really hot days when my attic fan is running non stop, to solve the issue, I crack the pull down attic steps door a bit in the garage.

Amazon Amazon
Old 08-20-2020, 10:01 AM
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https://www.hvacquick.com/howtos/howto_dryer.php
Old 08-20-2020, 10:09 AM
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I installed two Fantechs. No question, the dryers perform better and there is less lint build up, which reduces the fire hazard.
Old 08-20-2020, 10:32 AM
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Ge makes a long vent dryer
Old 08-20-2020, 10:40 AM
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If it’s hard piped I always use these for any 90 degree turns on the places I build.

https://dryer-ell.com/teamed-dryerbo...-run-reduction
Old 08-20-2020, 11:07 AM
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Put a Venturi blower in line.
Old 08-20-2020, 04:16 PM
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why not go straight up thru the roof?
they make caps fore that
Old 08-20-2020, 04:22 PM
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Dryers normally are good for 15’. Elbows are equal to 5’. You can put a blower and you can also put a lint trap out there with it for easier and longer life.
Old 08-20-2020, 04:32 PM
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I believe that code here is 20 or 25' total length, each 90° = 5'. The manufacturer should also have specs in their installation manual for acceptable length and types of ducting.

I have used the Fantech fans in the past with no problems.
Old 08-20-2020, 08:35 PM
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30’?! What is the layout of your house?
Old 08-21-2020, 10:13 AM
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Code is normally 25 feet minus 5 feet per ninety and 2.5 per 45.
unless the dryer's specs say it is good for 30ft.

Booster fans work great and must be installed with access for future cleaning. Typically in a closet ceiling/attic/basement near the end of the run.
Old 08-21-2020, 10:26 AM
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Originally Posted by 99yam40 View Post
why not go straight up thru the roof?
they make caps fore that
Does that not leave lint all over the roof?
Old 08-21-2020, 01:39 PM
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Originally Posted by bsmit24 View Post
Does that not leave lint all over the roof?
Yes and we have the softest lined bird nests in the area.
Old 08-21-2020, 02:17 PM
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Moving my Son into apt they have [img]blob:https://www.thehulltruth.com/10cc3533-1003-4f2e-99c5-37e5e9a44021[/img]
AMG force Elec fan In the vents .The vent tube goes 3 stories up.
Old 08-21-2020, 02:22 PM
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This was a Frigadare dryer today.

Check lint filter. Run some water on it and make sure water will run through. Sometimes they appear clean but are clogged with residue from dryer sheets too fine to see.

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