On Tue, 25 Mar 2008 12:02:17 -0700 (PDT),
wrote:

I have been looking for something that probably doesn't exist for
reasons I don't know.

I am trying to find out if there is such a thing as a heat exchanger
for a dryer that would attach like a humidifier to a furnace?

I have read MANY posts and articles about just piping the exhaust of
the dryer into the house and how bad that is with lint and moisture.

The things are between 5 and 10 dollars. Why not buy one and see if
you have the problems that others report, or if everything goes well,
like for me.

I've read those warnings too. My diverter box or whatever its called
has a lint filter, a 5x5" piece of something like window screen, and I
never see any lint coming out or lying beneath the outlet. I've been
using it for 24 years with no problems. I clean the filter about
every 30 loads, or when I see that it is partly clogged. It doesn't
clog very fast becaue there is already a lint filter in the dryer.
They sell such things at HD but they can be hard to find.

As to moisture, you need more moisture in the winter. That's why they
put humidifiers on furnaces.

Maybe if I had babies and did 3 loads of wash a day, I would have
problems, but a) I doubt it, and b) then I could switch the diverter
some of the time to send the air outside.

Trying to understand the other posters' claims of lint, maybe they dry
more lint-bearing laundry than I do. I don't actually know what
fabrics generate lint and what don't, but I do use a variety of
fabrics. The lint filter in the dryer whistles when it gets full.


What I am looking at is something like an air-air exchanger where each
"circuit" is closed.

So the dryer would still exhaust outside but on the way it would flow
through a box that is on the cold air return of a furnace. The
furnace would suck air through the box and collect some of the heat.

Just curious if anyone has ever seen anything like this, if it is even
feasible, and what issues this would cause?