So I'm thinking of upgrading next season or maybe if the boss gives approval sooner. Right now I have a USSC 2015 Magnolia installed in the basement and it heats our ~2000 square feet rather well. I would like to upgrade to a catalyst stove just so the wife doesn't have to mess with it while I'm out. The Magnolia has a 3 cubic foot box so something the same size would be needed. Also would need to be on a 6 inch flue / chimney since what i have now is 6 inch and I know a whole new chimney will not get the nod of approval.