Question about high efficiency Furnace Exhaust

Pep · 2007-01-17T03:48:54+00:00

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 weget some pretty cold daysBoth have said that a new horizontal exhaust is required out the sideof the house. Both contractors will also drain condensed water fromthe furnace to a floor drain inside my basement.One didn't recommend the high efficiency furnace. He said that the newexhaust will produce a sizable condensation cloud which will frost overa window which is about 3-4 feet above the exhaust. As well he thoughtcondensation would freeze on my neighbors house which is about 6-8 feetaway.Does a high efficiency gas furnace really produce a cloud ofcondensation? (It gets quite cold here, with a lot of freeze thawcycles over the winter)Would the furnace exhaust come out with enough force to frost up myneighbor's exterior wall 6 feet away?thanks

Jan 17, 2007 25 Replies

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<kjpro 19 years ago

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Art Todesco 19 years ago

Except on some models where a 90 degree elbow towards the ground IS required. Duh!

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Rick Blaine 19 years ago

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.

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Steve Barker 19 years ago

Mine's got a 90 on it. Would you care to elaborate on your incorrect sarcasm?

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Steve Barker 19 years ago

No it's not the same guy. Read.

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Bubba 19 years ago

Then you've got a cheap one piper so I really dont give a s*it. Spend some money, dip. Bubba

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