On Thu, 5 Nov 2009 21:31:58 -0500, "Ed Pawlowski"
wrote:


"mm" wrote in message
.. .
How do I accurately figure out where air is blowing out from, from my
furnace flue area, which is next to my hot air duct.

I'v used a match, but it keeps blowing out. Tonight I took a pencil
and thumbtacked a thin strip of cellophane-like stuff to the end of
it. Later I added a narrow strip of thin cloth. They blow like
crazy when the pencil is on the right side of the flue, but I can't
seem to narrow down where the origin is.

You can buy a smoke pen or light one of those incense things that smoke.

Good idea. I have an incense stick. No, I diddn't buy it. I'm no
hippie. It was probably in the apartment I used to have when I moved
in 38 years ago. I put it in a vase and it's still there, I think.
(I've only moved once since then.)

I figured it might come in handy, and 38 years later, it will.

If that doesn't work, I'll look for a smoke pen.

They will generate smoke, but by smoldering, no open flame to blow out.