Is this chimney safe?

  • Active since 1995, Hearth.com is THE place on the internet for free information and advice about wood stoves, pellet stoves and other energy saving equipment.

    We strive to provide opinions, articles, discussions and history related to Hearth Products and in a more general sense, energy issues.

    We promote the EFFICIENT, RESPONSIBLE, CLEAN and SAFE use of all fuels, whether renewable or fossil.
  • Hope everyone has a wonderful and warm Thanksgiving!
  • Super Cedar firestarters 30% discount Use code Hearth2024 Click here

mpmcswain

New Member
Nov 2, 2020
11
Western NC
I have an existing heatilator fireplace and this is the 8" chimney for it. I've used this chimney to vent an old Scandia wood stove with a 6" flue for 5 or so years. I know it's not ideal for draw to go from a 6 to 8" chimney, but does this look like it's safe? I've used it for about 5 years. Have I just been lucky or does this look reasonably safe based on these two photos? I feel confident in my connections below. It feels like thick enough material and it's double walled. Any advice is much appreciated

[Hearth.com] Is this chimney safe? [Hearth.com] Is this chimney safe?
 
Heatilator wood fireplace chimneys I don't believe are HT rated (2100deg). If its not, the right answer is its not the chimney to use.
Remember open burning wood fireplaces have a lot of air moving through the system as opposed to a controlled air flow and slower burning wood stove. I thought wood fireplace chimneys were rated for 1300 deg, but not positive. I'm sure one of the chimney sweeps on line here could be more definitive. I think you want to be using for safety's sake, solid pack class A chimney...
 
Looks like an air cooled chimney meant for an open zero clearance fire place (the ones that require the doors to stay open while burning) This does not look like class a pipe. The best thing to do here is to cross match you fireplace and read the manual, the manual will give specific standards on chimney and what the minimums are. if you dont have a manual there should be a tag on the fireplace usually located on the bottom front facing the inside of the unit, use the serial number or name and do a google search.
As for the chimney itself, as long as all pieces are clicked together and theres no apparent bulges in the inside liner (looks smooth from start to finish) it should be good to go, and of course rated for the fireplace its connected to.
 
Looks like an air cooled chimney meant for an open zero clearance fire place (the ones that require the doors to stay open while burning) This does not look like class a pipe. The best thing to do here is to cross match you fireplace and read the manual, the manual will give specific standards on chimney and what the minimums are. if you dont have a manual there should be a tag on the fireplace usually located on the bottom front facing the inside of the unit, use the serial number or name and do a google search.
As for the chimney itself, as long as all pieces are clicked together and theres no apparent bulges in the inside liner (looks smooth from start to finish) it should be good to go, and of course rated for the fireplace its connected to.

Thanks Kenny,

So you're saying I should only use it for the heatilator? Even if it's in good shape it could be dangerous to use with a wood stove?
 
That chimney pipe is not meant for wood stoves. It is most likely is rated 1700º HT. Woodstove chimney pipe needs to be rated 2100º HT.