Dryer Exhaust Booster

[edro]

We bought a new house recently and the washer and dryer are on the second floor, in the center of the house.
The drying time was easily DOUBLE what it was at our last house using the same washer and dryer.
I followed the exhaust vent through the attic and it measured out to about 25ft with 4 90° elbows.

I knew exhaust boosters existed, but had no experience with them.
After googling around a while and watching videos, I settled on this one:
Tjernlund Model# LB1

It has a pressure sensing tube that will automatically turn the fan on when the dryer is on for 20sec. Install was pretty easy, thanks to the duct location in the attic. I easily mounted it to some nearby trusses. Before install, I also cleaned out all of the duct work with one of those long dryer vent brushes.

After a week or so of using it, the results are amazing. It has gotten our drying time back down to normal, probably even less.
5 pairs of jeans took almost 2 hours before, this weekend it took <40min.

I highly recommend it if you have a long dryer vent run.

After a quick calc, the energy savings isn't amazing, but still decent.
@ 3000W
Old $0.30/hour = $0.40/80min. load
New $0.30/hour = $0.20/40min. load
$.20/load savings
5 loads per $1
1500 loads for payback in electricity, but... there is a huge time savings and savings on wear/tear on the dryer and clothes.

 

[Jimzz]

Yea I have a long run and a couple 90's so put a booster in as well. I put mine on a timer so just switch it on and it will turn off when the timer runs out. I have seen the ones that turn on like your but saw a lot of complaints about it not turning on or staying on all the time. Keep a eye out for that.

 

[boomerang]

In researching a recent washer and dryer purchase I ran across dryers that had a booster built into them. I had no idea they even existed. I also was reading the manuals concerning the length of runs and 90's and what not. It was rather amazing how long a run, etc. some of them are rated for.

 

[cabri]

1500 loads at 1 load every day is a 4 years recovery in costs.

Reasonable. For small household, maybe 8 years.

As long as the unit last that long; it pays for itself and you also have the saving in time as a benefit. :thumbsup: