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Question DetailsAsked on 5/9/2016

What is the estimated cost for HVAC person to go into attic check flue and put on correctly?

An inspector said that probably when my roof was redone the roofers didn't put the chimney/furnace flue on correctly so carbon monoxide is entering the attic rather than going outside. He says it's an easy fix, however an HVAC professional should be called in to complete this work.

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Not including any parts (probably zero or less than $50 for this assuming it has a flue diverter/cap on top now and adequate doublewall pipe length installed), probably $100-200 range by a Heating and A/C contractor. If just a flue duct that was not lined up and screwed together properly, possibly less than $100 assuming decent attic access.

If this is as a result of a home inspection and you are the buyer, I would make it a contingency that the SELLER has to get fixed at his cost before closing - that way you don't have to worry about the estimated cost not being what you thought it would be if the work is more than expected - say if the boot (the penetration sleeve/rainguard) has to be redone or it turns out the ducting is not double walled or suchm which could drive you cost up. Just put in a contingency, based on the inspector's report, requiring that the furnace flue be inspected by HVAC contractor and any code non-compliances be remedied, including but not limited to at the noted roof penetration area.

Answered 4 years ago by LCD

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