I need to vent an electrical drier to an outside wall (it's in an
attached garage). Is there any "standard" or minimum recommended height
to put the vent through the wall (on the outside)? I talked with a
handyman about doing this and I mentioned that I thought I heard
somewhere it should be at least 12 inches off the ground. He said he
never heard of that, and I believe he would want to put it quite low on
the wall. Opinions?
Would there be a code for something like this?
If you are in a snow area, you need to make sure it is high enough to be
above the expected snow fall. That is likely were you got that 12 inch
number. Personally I would consider 12 inch a good number to start with.
I don't know if the vent height is regulated by code, but there are a few
practical things to consider.
1. It's easier to route the vent through a wood wall than through concrete.
If your garage sits on a foundation (not just a slab), the vent should be
above the height of the concrete stemwall.
2. The vent should be high enough to keep "critters" like mice and
squirrels out of the vent.
3. The vent should be high enough that winter snows won't block the vent.
That height really depends on where you are located and how much snow you
4. Straighter is better. If the dryer sits up off the floor, a straight
shot out the back would be best. If you have to angle the vent up or down,
try to minimize the number of bends.
Your 12" height sounds fine to me unless one of the above applies.
First, we don't get any snow, so that is not an issue.
Unfortunately, it gets a bit more complicated. The dryer is against the
wall that goes into the house so a straight shot out the back is not
possible. The external garage wall is at a right angle to the
dryer--about 5 feet. But, it can't really go straight out to the side
either because there is a water faucet in about that location on the
outside (the whole side of the garage is clear except right there--all
the luck!) There is also a hose storage thing hanging above the faucet.
So to avoid that you have to go down the wall a few feet. But then
there just happens to be a garage vent (open screen vent to outside
near ground). It could go above that, but is that a good idea? Is it
possible the lint could end up right back in the garage or getting
caught in the wall vent screen?
You may already be aware of this, but if you have not done so check the
dryer's installation instructions and local codes.
If you are installing the dryer is in a garage it likely has to be on a
platform at least 18" off the floor, and a garage location may be
prohibited entirely by local codes, or may be subject to other
restrictions or requirements - though a electric dryer dos not have an
open flame it's still considered a "potential ignition source" for
gasoline and other explosive fumes.
Paragon Home Inspection, LLC
I would avoid venting near the faucet or the vent.
Could you go straight back (UNDER the house), then angle out to the outside
wall as soon as you can find an available spot? If so, don't use a hard 90
degree turn. Go back a ways, turn 45 degrees, go a little further, and turn
the final 45 degrees. The more gentle you can make the bends, the better.
Another possible option, straight up through the roof? I know many people
do this, though it would require cleaning the duct behind the dryer every
so often to remove lint that falls back down the duct. I wouldn't
personally choose this option, but if nothing else seems to work...
12 inches is code in many areas.
If you can avoid 90 degree angles, that is best. I have been able to
reroute many dryer vents using lesser angles, which helps the lint
build up/cleaning process in the long run.
Certified Dryer Exhaust Technician
John Ross wrote:
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