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Discussion Starter · #1 ·
The current venting setup on this job is one common vent for an 80% furnace and water heater through a chimney.

I am considering pulling out the existing vent, and running a 4"b-vent for the w/h and the pvc vent for a new furnace. has anyone done this? If so, what are some things that I might want to be aware of?
 

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Discussion Starter · #3 ·
Thanks Gene, I was concerned about the spacing between the pvc vent and the B-vent. I don't think the heat from the b-vent would "melt" the pvc, but was curious if that might be an issue. I guess if there was a problem, you would have heard about it by now.

Once again, thanks for the input.
 
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