My Furnace may be unrepairable...what is new?
I have an older Suburban NT-30K ducted propane furnace. I think the firebox is cracked. So, whats new in the world of furnaces? Are there any with higher efficiency?
Forum Discussion
groundhogy wrote:
Yes, I am reading a post in the airstream forum about higher efficiency furnaces. Two are mentioned....
Excalibur 8500 IV Furnace, 30,000 BTU - Attwood. Has or had a design flaw with an electromechanical hum that is anoying.
Trumatic - German. Smaller very quiet.
This one apparently has the water condensate drain so may be really high efficiency.
Since you have a Suburban, I would highly recommend staying with a Suburban.
If you change to a Attwood, you WILL have to cut a very large hole in the side of your RV..
Suburban and Attwood have two incompatible ways of mounting and there is a big difference in dimensions between the two. You better measure very carefully, the Attwood may be wider and deeper than a Suburban and the suburban IS much taller narrower and shallower than a Attwood..
Suburban is removed or installed from the INSIDE, the Attwood is removed or installed from the outside.
Propane lines enter in different places and the power and T stat connections may not be in the same place.
Overall, there is not much extra efficiency to be had between manufacturers so the extra rework you will be doing is not really going to give you any savings in propane.
The biggest problem with RVs is the LACK of insulation, that is where the biggest gain in efficiency is, not the furnace.
