Re: Renovations
Reply #2 –
Refurbish vs. replacement is not always a simple choice. Last winter our furnace stopped working during the Texas Freeze Out. Mud dobbers had infested the exhaust vent and heat exchanger. A rusted burner assembly combined to overheat the heat exchanger resulting in combustion fumes entering the coach.
We determined it needed a new burner assembly, new electric fan motor, and combustion chamber leading my shop to recommend a new furnace. Fan motors are fairly available for older units, other parts can be hard to source. Dometic bought out Atwood and their replacement models are not one to one substitutes. Propane connections are not in the same place, furnace doors and flanges are different size. The original door and flange were larger than the new, thus the opening in the side wall was too large. Compounding the problem, the original flange was bonded so well to the wall, that it had to be cut into pieces in order to remove the furnace for replacement. We scored one of the last NOS flanges for the obsolete furnace at FOT, then modified the propane connection and original furnace door to work with the new furnace. Lots of labor and some tough choices. If you do it yourself, you may find it a significant project while you still pay a coach buck for the new furnace plus various parts to make it work. You may end up fabricated parts. No one can really tell you what to do without a lot more information, but if the replacement parts are available for your furnace and the heat exchanger is good, I would seriously consider refurb.