Re-route that vent pipe and bring your a large flex duct out of the top and route it into the ceiling over away from the furnace and drop you a return in the ceiling it will be a lot quitter.
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Experience is a hard teacher because she gives the test first, the lesson afterwards" ~ Vernon Law
"It's what you learn after you know it all that counts." ~ John Wooden
"When the teachers become unteachable we're all in trouble" ~ Mr. Bill
"Remember "Pro" is only a name, it's not always a mindset determined to do everything correctly" ~ Mr. Bill