A simple fix for a high efficiency furnace

[Norm]

My daughter had called and said her high efficiency furnace had quit working...after browsing around on the internet I ran across this posting on a forum 'Thanks a lot, I found the problem there was snow on the inlet of my high efficiency furnace...I cleared it off and it kicked right in....'

http://ths.gardenweb.com/forums/load/hvac/msg1222291231435.html

So I went over and it wasn't snow but frost

The outlet was putting out very moist air, like what most folks would call steam, and as the inlet is only about a foot away at the same height, the outlet had frosted up the inlet! ...same as snow.

  Ah....everything is so much fun if you can keep it simple!  ( :>) Norm

 

[RatOmeter]

Sounds to me like you should add a flue or something to provide better seperation between the inlet and outlet.  Isn't it a little dangerous to burn other than fresh combustion air?

[Norm]

   Installed by a professional ....yes it does need some kind of seperation...it has been duly noted and he will hear from us. It still gets a large percentage of fresh air just that it gets humid air too. Appreciate your concern. Thanks RatOmeter. Norm

[Radomike]

Norm,

  My furnace is similar to yours, the two pipes maybe only 6in. apart.  

  However, my exhaust is a foot taller than the intake; the intake has a 180 elbow on top pointing down.

  I've never had any trouble with it.

  These units make so much water; I wonder how pure it is.  A fellow could water a small indoor garden or something.

  Mike