Old Bullard insert

I have a chance to buy an old Bullard insert. I have read about the problems associated with using these devices without running a metal chimney liner up the masonry chimney (which I have). My chimney tiles are 8x10. From what I have read, the problem is that the size of the stove exhaust is so much smaller relative to the size of the chimney that it cause severe creosote buildup. I understand that there is a ratio of the two that determines if you need a new liner or not. This Bullard has a huge exhaust opening (3"X24" rectangle). This is essentially the same area as my chimney stack. What I'm not sure about from my research is: even if the size of the stove outlet is essentially equal to the size of the masonry chimney, do I still HAVE to run some kind of metal liner up all or part of the masonry chimney? Thanks for any help, this is a great web site

welcome to the forum. i think you would have better draft if you make up a adapter to go from your 3 x 24 to your metal liner. the insert would work much better and prob a lot less creosote with it that way. with also keeping the temps on the insert on the high side.

Thanks for the reply. I re-read my post and realized that I wasn't clear about my setup. I do have a masonry chimney, but do not have a metal liner. I do not want to spend what a liner would cost and was wondering about just placing the insert in the fireplace. Thanks