Franklin Wood Stove Can I Replace A Wood Stove That Has A 8" Flue With One That Has A 6" Flue? Will I Create Any Draft Problems?

Can I replace a wood stove that has a 8" flue with one that has a 6" flue? Will I create any draft problems? - franklin wood stove

I have a inefficiant Franklin stove with a chimney 8 "and the house. I want to replace it with Fisher Mama Bear was only 6" flue. Is it safe? There are problems when you use a point reduction?