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Question DetailsAsked on 12/15/2016

how much does it cost to install a 2 story chimney liner and then connect it to the hot water heater and furnace

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Bealow are links to some previous similar questions with answers - I would say count on $1000 range for a nice easy straight shot chimney to install metal (usually double-wall stainless ducting for this application but sometimes code allows single-wall) flue ducting, plus a few hundred to $500 to decommission a fireplace for this use. With multi-fireplace chimneys or something other than a straight vertical chimney, say $1000-2000 and count your blessings if under $1000.


http://answers.angieslist.com/ViewQue...


http://answers.angieslist.com/What-co...


http://answers.angieslist.com/chimney...


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Sometimes, especially if the chimney is tight or offset to put the ducting in readily, it can be cheaper to go outdoors with it and take it up in an external chase - basically a boxed-in bumpout on the house with the double-walled stainless ducting inside it, with proper clearances and venting and such. Basically very similar to a "ready-set" type metal fireplace with doublewall exhaust flue rather than a full brick chimney.


This of course assumes a gravity or low-efficiency flue - high efficiency units can vent directly outside with plastic pipe and are much cheaper to pipe - so sometimes if replacing the units even though a higher efficiency unit may cost more up front, it can be cheaper at times to go that route to avoid the flue up through the house. Your bidders should be able to give you a comparative bid both ways easily.


Also - be sure local code allows this, especially if they are fueled by different fuels (gas and oil say) - some jurisdictions are pretty lenient, generally solid fuel fired appliances cannot be common-ducted with gas or oil, and some restrictive areas even gas and oil fired ones cannot be common ducted - and a few extreme areas do not allow common flues at all, so make sure a plan is submitted for building permit and APPROVED before committing to particular units or flue routing.


One other consideration - fairly soon new heating units will probably ALL be required to be high-efficiency condensing units, which vent through PVC pipe - so putting in a gravity flue through the chimney at this time might not be worth the expense if your units are near to replacement time anyway. Plus figure, in some areas, a working wood burning fireplace is valued at $5-10,000 come resale time - so if that is the case in your area that "savings" might sway you towards high-efficiency units (if installing new ones now) or an external chase and flue (depending of course on distance of units from that wall also). Of course, value depends on locale, how often you lose electric power for your furnace and for how long, what type of fuel the fireplace burns, and whether it is an open hearth fireplace or high-efficiency enclosed gas fireplace. And of course the value is different to different people, depending on their use of fireplaces, whether they object to the smell of gas fireplaces or the smoke of wood-burning, even down to whether they want to roast marshmallows in the fire. Below is an AL article on the subject of fireplace resale valuation -


https://www.angieslist.com/articles/d...

Answered 1 year ago by LCD




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