Probably the bearings in the motor dying or something. The furnace is
a Suburban NT-35K, 35,000BTU. I figured with the age of the furnace,
it was just as good an idea to totally replace the unit with a new
one; than mess with changing the motor and maybe curing the problem or
not.
So I ordered a new Suburban NT-40S (40,000BTU) from PPL motorhomes in
Houston TX. It arrived UPS yesterday. After unpacking it, my wife
immediately says it looks bigger than the place where it goes. So I
slide it over next to the location and the new one is about 3 inches
taller and would bump into the reefer door, instead of fitting
underneath. So a call to PPL and I find ALL the new Suburban NT
furnaces are this size now, regardless of BTU rating.
About the only one they make that might fit is a SF-35 a low profile
unit about 2" shorter than what I have now. But about 5 inches wider
also to make up for it. Looking into the spot the furnace is
installed; shows a water pipe sits in some of those 5 inches. So shy
of re-plumbing the water line with those swagged on fittings the RV
makers use, the other furnace won't fit either.
I looked at Atwood furnaces to see if they have one that would fit,
but their's look about the same. So can't just switch brands.
So at the moment have sent the new one back to TX and maybe will buy a
motor & fan for the old one, about $200 ( 1/3 the cost of all new
unit). Bummer is PPL may well charge a restocking fee of $130. So
don't know if I'd order the motor from them, unless they waive the charge.
Any ideas as to maybe a place that still sells the older obsolete size
furnace? Or maybe some other work around solution?
Bill Davis
37' Safari Continental '93
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