loud bang when furnace kicks on?
In our case, I tried locating the place and it's pretty much unreachable...so we live with it. Hopefully yours is accessible so you can figure a way to stabilize it--perhaps attach it to house framing better, or something.
-k2 in CO.
In my furnace there are 5 burners. The last burner, I noticed was turned 45 degrees and not aligned with the others. when the furnace burners were tring to light the gap between the last was causing the popping sound. I used metal wire and held the last burner correctly in place using the second to last burner. From that moment on, the furnace did not bang or pop any longer. Check this out, if you are experiencing this problem.