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The Fantech 110 is the most common one used in my location. We do not carry vent boosters here @ APP that I have been able to find.
I would make sure whichever you purchase that it is UL listed and approved for the job.
The Fantech models have a 4" inlet and outlet and will hook right in line as you stated at one of the connections.
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Originally Posted by: brobriffin  Great I am glad you solved the puzzle.
In my opinion a likely cause for so much build up may be the back pressure on the system due to the long vent run with so many elbows. The belt driven fans as you have are not as powerful as the fans connected directly to the motor.
You will likely run into this problem again in a year.
Keep in mind the lint build up presents not only a drying issue but also presents a fire hazard. Hence the reason for the building codes mentioned earlier.
Installing the vent booster should help prevent the buildup of lint and prevent downtime, overheating of the unit, potential broken parts (i.e. heating element, thermostats, etc) increase drying efficiency thus reducing drying time saving on electric cost and as stated before reduce fire hazard.
Oh BTW I'm a retired fireman. Partly reason for entering this business. The nice thing about this dryer is that I now know the check vent sensor is really working. I ignored it because I assumed the vent was clear and thought the sensor was not working. Are the vent boosters sold on this site? I looked up the ones you recommended but need to do more research. I guess I just find a seam in the vent were two runs meet, open it up and put it in. The one I looked at had a small hole and claimed the lint can pass through but it concerned me.
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Great I am glad you solved the puzzle.
In my opinion a likely cause for so much build up may be the back pressure on the system due to the long vent run with so many elbows. The belt driven fans as you have are not as powerful as the fans connected directly to the motor.
You will likely run into this problem again in a year.
Keep in mind the lint build up presents not only a drying issue but also presents a fire hazard. Hence the reason for the building codes mentioned earlier.
Installing the vent booster should help prevent the buildup of lint and prevent downtime, overheating of the unit, potential broken parts (i.e. heating element, thermostats, etc) increase drying efficiency thus reducing drying time saving on electric cost and as stated before reduce fire hazard.
Oh BTW I'm a retired fireman. Partly reason for entering this business.
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Originally Posted by: brobriffin I'm happy to report back that the dryer seems to be finally fixed! Finally the check vent light is not on and the good light is on :D The front bulk head was clogged. I always clean out the removable lint filter, but there was a substantial build up of lint on the bottom of the front bulk head. Could not see it or get to it until it was removed from the dryer. Here is a picture:  Once I saw that, I was pretty sure that was the cause. However, I continued on to make sure the blower wheel looked good and was not clogged. It did look just fine. Here is a picture of that: 
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Originally Posted by: brobriffin You got it! As always, thank you for the recommendations. I will post back here when I go through this and let you know the results.
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Oh my bad
We don't have basements here in floirda.
The vent booster should be placed inline about 15 feet away from the dryer which in our application would be in the attic.
For you that may be just before the elbow between the 6 foot run and the 13 foot run.
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Originally Posted by: brobriffin A number of factors in play
The vent fan on your dryer may have lint and dust build up on the blades causing them not to move sufficient air. Couple that with the length of vent pipe and I would suggest an exhaust booster. It need to be placed 15 to 20 away from the dryer, up in the attack. Search the web for Fantech 110. This unit will be sufficient as it moves 167 cubic feet of air per minute. And yes its not a gimmick, most new construction here installs them. That was the building code i had quoted previously. I will check it out. Any advice or information on how to check/clean that vent fan on the dryer? You mentioned the fan goes up in the attack. The dryer is in the basement.
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A number of factors in play
The vent fan on your dryer may have lint and dust build up on the blades causing them not to move sufficient air. Couple that with the length of vent pipe and I would suggest an exhaust booster. It need to be placed 15 to 20 away from the dryer, up in the attack. Search the web for Fantech 110. This unit will be sufficient as it moves 167 cubic feet of air per minute. And yes its not a gimmick, most new construction here installs them. That was the building code i had quoted previously.
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Originally Posted by: Lery I should have also mentioned that this dryer was fine for about a year. Then it started happening and hasn't really stopped.
Any other thoughts or suggestions? Someone was telling me that I could buy an insert for the duct that acts like an additional fan. Would this help or is it a novelty item? Any other suggestions on this one anyone? My only pain point is that the dryer worked fine for about a year. So if the vent system was not proper, and it's not, my assumption is it wouldn't work from the start.
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