How do you attach gas dryer vent to outside wall?

Carol P
by Carol P
I have a gas dryer that the flexible hose that goes down to the crawl space has come lose from the outside wall vent. There is a crawl space opening right next to the outside louvered plastic vent. I think it just needs to be reattached from the inside. Is that done with one of those round clamps that is metal and screws tight?
  1 answer
  • @Carol P Your exactly correct. There should be a metal tube of sorts that extends into the crawl space that is connected to the outside vent opening hood. The flexible vent pipe that comes from the dryer slips over that pipe and is fastened into place using a four inch pipe clamp. Looks like the one on the auto radiator only larger. It can be a bit tricky to hold the pipe in place while maneuvering the clamp into place. We use aluminum duct tape to old in place and seal the joint followed by the clamp over the top. Easy fix. If your using a vinyl dryer hose, you should replace with a flexible metal one. Vinyl can overheat and melt if the vent becomes plugged with lint. In fact they are no longer allowed in many towns due to code changes. These flex pipes come in a short length about two foot long, but with the help of a friend you can stretch them out to around six or seven feet in length. You pull just as much as you need. The shorter the pipe with the least amount of bends makes the dryer work faster. Costing you less money. Last thing to know. Be sure that the outside vent does not have a grill over it. These grills will collect lint fast and can prevent the dryer from working.
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    • @Lori Jackson The vents for dryers have a flapper connected to them. They swing up when the fan on the dryer runs. That is about all that is needed to keep most critters out. The vents that have grills covering them along with the flapper are used for bath vents. I understand the concern with the critters getting in, there was one instance that a snake got into one! And although there is a risk of mice etc. taking up shop, its more likely that the cover will plug fast with lint and cause a fire. Not everyone is diligent enough to stay on top of keeping these clean. While perhaps down south where its warmer during the winter, but up north folks simply do not walk around their homes and clean lint out of vents. And with all the extra laundry being done during those times, those vents can plug in a matter of a few weeks. One of the leading causes of fires in the US are plugged dryer vents. So anything that can prevent this from occurring even something as simple as a vent cover as you suggest can put a family at risk. Not worth it.