Tried searching and found a couple posts here and AS forums. I will post some pics and sizes detailing my basement and how to pipe chimney . But I'm trying to see if the extra $ is worth spending on the heatmax considering it is epa rated and the englander is not? I would love an add on furnace that can hit 8-10 hr burns. My only install dilemma is should chimney go through the window(blocking existing window frame) or beside a window out the block foundation. But first trying see if extra $ is well spent on the burn tube epa rated furnace. Planning on new wood insert on main floor as well .