Most noncondensing residential furnaces use natural draft to drive the combustion process. Even 80%-AFUE furnaces with combustion blowers are natural-draft furnaces. The combustion blower in an 80% ...
God, I hate living in an old house. <BR><BR>So a section of smoke pipe had corroded through. So I go to Lowes and buy a new section. I get home, cut it to size, snap it together, and pop off the ...