Dryer vent boost fan recommendations

[BOP]

Anybody have any recommendations?

 

[DoWhat]

Anybody have any recommendations?

Never heard of this.

 

[glhs837]

Seems that this might be the trick right here. REviews on Amazon look good.

http://www.amazon.com/Fantech-DBF-Dryer-Booster-Duct/dp/B000GXF7KO Who knew the UL has actually developed a standard for these things?

http://www.fantech.net/Documentatio...412038 Ventilation Solutions Laundries EN.pdf

 

[BOP]

Never heard of this.

Manufacturers recommend a booster for any run over 25 feet. They also reduce that linear run by 5 feet for every 90 degree bend, so if my dryer is 20 feet from the exhaust and I have one 90 degree bend (which I do), then I need a booster fan. Having one can reduce the drying times and the amount of heat in the dryer, as well as eliminating lint and moisture in the vent tube. I've learned a lot over the last few days. One of the things I've learned is that booster fans aren't cheap.

 

[GURPS]

a 9 inch box fan at the end of the run ....

 

[BOP]

That's one of the least expensive units I've seen. The setup there is an inline unit, which means you have to buy the lint trap along with it. They also make a unit where the motor is offline from the vent pipe. Unfortunately, it's anywhere from $250.00 to over $300.00. I don't know anything about the company, though.

http://tjernlund.com/retail/dryerductbooster.htm?gclid=CI751Mb-v78CFQxp7AodFAYAJg

 

[nutz]

Manufacturers recommend a booster for any run over 25 feet. They also reduce that linear run by 5 feet for every 90 degree bend, so if my dryer is 20 feet from the exhaust and I have one 90 degree bend (which I do), then I need a booster fan. Having one can reduce the drying times and the amount of heat in the dryer, as well as eliminating lint and moisture in the vent tube. I've learned a lot over the last few days. One of the things I've learned is that booster fans aren't cheap.

Do you have flexible ducting? Replacing that with 4" rigid pipe may be a better solution. Hard pipe(by code) has a 35 foot - 5 per elbow allowance, so at twenty feet, you may have other issues. http://publicecodes.cyberregs.com/icod/imc/2009/icod_imc_2009_5_par109.htm

 

[GURPS]

Do you have flexible ducting? Replacing that with 4" rigid pipe may be a better solution.

I can see where the flex would have more turbulence in the pipe

 

[struggler44]

Do you have flexible ducting? Replacing that with 4" rigid pipe may be a better solution. Hard pipe(by code) has a 35 foot - 5 per elbow allowance, so at twenty feet, you may have other issues. http://publicecodes.cyberregs.com/icod/imc/2009/icod_imc_2009_5_par109.htm

This and use foil tape on the joints, screws will catch lint and build up over time

 

[acommondisaster]

Let me guess - you have a dryer that matches one of those HE front loading washers.

 

[BOP]

Do you have flexible ducting? Replacing that with 4" rigid pipe may be a better solution. Hard pipe(by code) has a 35 foot - 5 per elbow allowance, so at twenty feet, you may have other issues. http://publicecodes.cyberregs.com/icod/imc/2009/icod_imc_2009_5_par109.htm

The last couple of feet are flex duct, the rest of it is new rigid duct. It comes straight out of the dryer, through the floor into the crawl space, a 90 degree and a straight run across the crawl space toward the wall. I found myself without any cutting implements, so the short piece is made up of the flex aluminum ducting that I cleaned out.

 

[BOP]

This and use foil tape on the joints, screws will catch lint and build up over time

I used the foil, but also the screws. I didn't think about them catching lint until I started this research.

 

[glhs837]

Yep, take those suckers out.