Originally Posted by paulmichie
Would anyone recommend repairing one of these or is it just wiser to update? I think it just needs tuning up
If it's original to the trailer, and is a typical fan-forced RV furnace, I would recommend replacement. There are a number of problems common to older furnaces. One is that the fan bearings fail. Another is that the heat exchangers burn through with use. Finally there are some older furnaces that had recalls due to failures of rubber components over time. Replacing the furnace is costly and time consuming but unless you're sure that what you have is good, it's the way to go.
Originally Posted by Kevin245
A 46 year old RV furnace isn't worth the risk of anything other than a very minor repair in my way of thinking. Safety is my primary concern and even if this is a "looks like brand new", or hardly been used" appliance I would sleep better knowing that a new unit is installed.
Just my view.
I think that's true as far as the typical fan forced furnaces are concerned.
The older gravity furnaces, such as the panel ray, are another matter. They are less prone to failures, and equivalent replacements aren't readily available.