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Old 10-11-2010, 02:09 PM   #1
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Going to Replace the ol Suburban Furnace

We are planning on going south (from WA ST) this winter and the old Suburban furnace in our '78 Argosy works but not very well and it is 32 yrs old. I am planning on replacing it but would like to get some options as to a replacement furnace - catalytic? newer Suburban or??? Any ideas/experiences are helpful. thnks jjustice
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Old 10-11-2010, 02:15 PM   #2
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I ordered a new Suburban. UPS just brought it.
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Old 10-13-2010, 08:31 AM   #3
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jjustice, Replacing your old furnace with a new Suburban should be an almost easy changeout. Suburban for Suburban is a good choice.
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Old 10-13-2010, 11:42 AM   #4
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Our first Suburban lasted 20 years, no problem other than replacing the iginitor board with a quality Dinosaur product. We replaced the furnace in 2001. Only used it in the mornings since we have oil-filled radiators fore and aft. We never use it during our winters in Arizona. That being said, we have replaced the heater motor four times, the ignitor once, gas valve twice, electrode twice, limit switch three times. Needless to say, we are not pleased with the product. :

Dinosaur Electronics Home. High quality circuit boards for RV appliances.
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Old 10-13-2010, 12:22 PM   #5
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Originally Posted by Mike Leary View Post
That being said, we have replaced the heater motor four times, the ignitor once, gas valve twice, electrode twice, limit switch three times. Needless to say, we are not pleased with the product. :
Other than that, it's been OK, though?
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Old 10-13-2010, 09:11 PM   #6
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Other than that, it's been OK, though?
My main regret is I own no stock in Suburban!
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Old 10-13-2010, 09:49 PM   #7
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Old 10-13-2010, 10:08 PM   #8
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You can replace the electrode yourself when it goes south, be sure to get the gaskets, also. A good hand can also replace the limit switch if there's enough wire free. Otherwise, the furnace comes out. Remember, no need to remove the enclosure, blow and vacuum the hoses when the furnace comes out, which, it will, if my bad luck is any indication.
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Old 10-13-2010, 10:26 PM   #9
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Put a Sub NT30 SP in my 72 trade wind last Feb. There's a thread out there of what I did, used 2x2s to build a frame under it and wrapped with silver tape to seal. Had to use tin snips to cut around the old furnace cover as the gas line comes in on the right side.
The Nt30SP is smaller that the original 24 but puts out more heat and is pretty quiet.
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Old 10-14-2010, 07:55 PM   #10
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Just installed one over the weekend, it was not 100% plug and play, there were a few tweaks.

But it's nice
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Old 11-08-2010, 04:27 AM   #11
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Guess my time to replace furnace

Original 93 SuburAN fan motor SQUEALLING like crazy, are new suburbans good furnaces??? any idea of cost? Plan to call service center to quote & install, I'm no wiz with gas heaters.
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Old 11-08-2010, 05:34 AM   #12
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Just did mine, sp30 about $500.

very quite, throws heat out better than the old one
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Old 11-08-2010, 05:16 PM   #13
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How major a job is it to replace suburban furnace????

Service guy coming to give me a quote, if not a bear I may buy one direct & do it myself. ?????

1993 34 ft. classic, full time live aboard, first winter.

Thanks for any advise.

Also I plan to replace old Attwood water heater, it smokes, real old, do not trust it. Service guy to look at it also & give me a quote to replace it with suburban unit.
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Old 11-08-2010, 05:24 PM   #14
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Frankfarmer replacing a furnace in a 93 should be a straight forward replacement job. Simply remove the old one and install a direct replacement. Ducting and gas lines should match up directly without any modifications. IMHO I would replace the water heater with an Atwood model. Again it should be an easy replacement without any mods. If you use a suburban it will bw a different size and require modifications to the shell to accept the different size unit.
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