On 16 Jan 2007 19:48:54 -0800, "Pep" wrote:
I have had two contractors in to price out a new high efficiency (90%)
gas furnace for my 25 year old home located in Calgary Alberta. So we
get some pretty cold days
Both have said that a new horizontal exhaust is required out the side
of the house. Both contractors will also drain condensed water from
the furnace to a floor drain inside my basement.
One didn't recommend the high efficiency furnace. He said that the new
exhaust will produce a sizable condensation cloud which will frost over
a window which is about 3-4 feet above the exhaust. As well he thought
condensation would freeze on my neighbors house which is about 6-8 feet
away.
Does a high efficiency gas furnace really produce a cloud of
condensation? (It gets quite cold here, with a lot of freeze thaw
cycles over the winter)
Would the furnace exhaust come out with enough force to frost up my
neighbor's exterior wall 6 feet away?
thanks
imho:
I have a 90%+ unit, and never saw any of this 'frost'. Now I don't
have a window over my flue either, but I do have a wall about a foot
away from the exhaust. No frost.
Might want to get that third estimate. Also, check with your
accoutant, if you don't get your high effeciancy rating, you might not
get the tax credit, and the cost of fuel over the years could have you
kicking yourself.
Just thinking out loud....
tom @
www.MedJobSite.com