The "fire box" (heat exchanger) for the furnace of package unit model number PGB030050-1 made by Goodman Manufacturing may have a tendency to crack due to a manufacturing, design, or both defect. Since the replacement fire box (heat exchanger) comes with an "air baffle" (37012-53S), re-directing the air flow on to the heat exchanger, possibly to cool it more to prevent it from over heating and cracking so soon; the flaw may be in the design or it may be a way to try to get the fragile heat exchanger to last longer. If you have a Goodman PGB030050-1 package unit the fire box will need to be checked every time the unit is serviced. Furthermore, a repeated cracking and replacement of the heat exchanger will cause the auxiliary limit switch to eventually over heat and fail as well.
- posted
17 years ago