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Old 03-19-2014, 06:33 PM   #1
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1975 31' Sovereign
Valparaiso , Indiana
Join Date: Jan 2012
Posts: 41
Suburban NT32CA Replacement

I need to replace the old Suburban NT32CA furnace in my '75 Sovereign 31. Would an NT20 be big enough to do the job. Also, I have not been able to find any information on what all of the letters stand for in the Suburban model numbers. Any help?
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Old 03-19-2014, 07:51 PM   #2
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1981 31' Excella II
New Market , Alabama
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I would put an NT-30 SP back in. An NT-20 is a little on the small side since you are up north and you have a big trailer. The price difference is not that much.

Suburban NT-30SP Furnace 30000 BTU 4.5 Amp Draw Trailer Camper RV

Perry
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Old 03-20-2014, 01:44 PM   #3
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1975 31' Sovereign
Valparaiso , Indiana
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Thanks Perry, Colaw has an NT20 for $350. but if it is not going to be big enough it's not an option. I was just trying to save a few bucks.

Ken
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Old 03-20-2014, 02:31 PM   #4
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1981 31' Excella II
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If an NT30 SP is going to cost you as much as two NT-20 models put in two NT20 units and put one in the front and the other in the back. Do you have a rear bedroom model? My furnace, when it works, is plenty but the heat back to the bedroom is not great since it is the longest distance from the furnace. They should have run two lines back there. There is a guy about 90 mins from here who said he would sell me a new NT30 SP for $300. He has an RV new and used parts business and he says he buys 100 of them at a time and he must not mark them up that much to sell for $300.

It makes you wonder what these things really cost to make.


Perry
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Old 03-21-2014, 08:29 AM   #5
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1975 31' Sovereign
Valparaiso , Indiana
Join Date: Jan 2012
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I do have a rear bedroom model. I replaced the original ductwork with the same configuration, 2 - 4" flex ducts that went into an 8" round under the shower then into a 2 1/2" x 10" under the bath sink and into the bedroom. I don't know how well it worked because the furnace didn't work when I bought the trailer. I would certainly be interested in a new NT30 at $300. if that is possible.

Thanks,
Ken
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Old 03-21-2014, 10:03 AM   #6
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South of the river , Minnesota
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Rule of thumb is 1,000 btu/h per foot of trailer length will keep you warm down to subzero temps

Sure you can put a 20,000 btu/h heater in a 30' trailer. It will not keep the trailer at 68 degrees when temps drop to around zero or at temps around freezing when the wind is strong.
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