I had a high efficiency gas furnace in my Toronto home and the vent
was directly below my dining room window. I had no issues with window
icing but ice did build-up on the PVC pipe itself during sharply cold
weather. It wasn't a serious or frequent problem and it was easy to
knock off with your boot.
The condensed water is acidic, so if nothing else drains in there and it
is cast iron or copper, could very slowly eat it up. My condinsigs at
work drain outside, and I get a huge icicle in the winter. They changes
it to drain into my slop sink and I keep a bag of marble chips under it
in the hope of neutralizing it somewhat. It does eat the rocks away...
Under no conditions let this idiot inside your house again
No, and no.
Actually the condensing furnace exhaust has less moisture in it than the
standard[remember the drain?]
I have had a high efficiency furnace for over 20 years, one of the first
ones. It exhausts out the side of my basement wall with a "tee" on the end
of the pipe to split the exhaust up and down. While there is a cloud of
condensation when it is running, it creates no problems, sometimes a small
mound of ice on the ground below. It is in a corner of an "L" and does not
cause icing on the walls around it. Check other installers, that one doesn't
want to install the high-efficiency furnace, probably because he has not
learned how to do it properly, which is bad because they have been around
for 25 years.
Certainly in Calgary... I would just point out for the lurkers that the
difference in cost between the 80 and 90+ furnaces in the less extreme parts of
the continent can make the payback a long, long time. YMMV.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.