What liner for existing metal chimney?

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mpmcswain

New Member
Nov 2, 2020
11
Western NC
I'm about to install a new wood stove that will rear vent to a tee and up an 8" double walled straight metal chimney. The current fireplace is an old heatilator from the 80's. The chimney is one of those large wooden structures with the double walled metal chimney in the center. As far as I understand I will need a chimney liner because the chimney I have is not rated for the kind of heat that the wood stove will produce. My question is, is it ok to buy one of the 6" flexible liners and just shove it down my existing 8" straight metal chimney? Does it need any kind of spacers to keep if from touching the walls of the 8" chimney? The current 8" chimney pipe has spacers on the outside that keep it centered inside the larger pipe so the walls of the pipes never touch each other. Just wondering if I need to recreate that situation with my new 6" liner. Hope that all made sense! Thanks in advance
 

begreen

Mooderator
Staff member
Nov 18, 2005
90,417
South Puget Sound, WA
Is this a ZeroClearance fireplace? Please post some pictures of the current setup. The word heatilator is sometimes used generically.
 

mpmcswain

New Member
Nov 2, 2020
11
Western NC
Is this a ZeroClearance fireplace? Please post some pictures of the current setup. The word heatilator is sometimes used generically.
20211011_175404.jpg 20211011_180844.jpg

It is definitely a heatilator. It has a name plate on it with the model number. I'm not sure what zero clearance means, but I can tell you that it is basically a sheet metal box with fake brick panels on the inside of the sheet metal.
 
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begreen

Mooderator
Staff member
Nov 18, 2005
90,417
South Puget Sound, WA
It's a zero clearance fireplace. Sorry but I don't think this plan will work. The fireplace was not designed for alterations. What is the model number? What does the manual say?