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Viessmann Coaxial Venting.
Howdy everybody! Hey I had a WB2B installed 2 winters ago and it's been running like a champ. The only thing I don't like is the frost it's leaving on my house. It direct vents straight out the back wall it's mounted on. The vapor rises up and runs under the eve and turns to frost. With some moisture getting into the attic and I don't want that. I would like to run the coaxial vent above the eve but it has to be run on the outside. Do they make an insulated coaxial vent pipe? I'm up north and it's dam cold at times, -20 is usually as cold as it get. Later on this summer I'll have the company that installed the unit come and do the work. Thanks Viess.