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Old 10-15-2013, 08:15 PM   #1
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1979 31' Sovereign
Stephenville , Texas
Join Date: Mar 2013
Posts: 30
Images: 2
'79 Sovereign 31' - Furnace replacement - DIY or take to shop?

Im looking to replace the furnace in my 1979 Sovereign Land Yact.

How big of a task is this? I havent been able to find any detailed info on replacing them. The usual info I get is that some modifications will need to be made. What kind? Am I gonna have to remove my stove/oven to get to it?

Id prefer to tackle this issue myself but since my knowledge of trailer furnaces is minimal and I dont exactly have a shop or place to modify parts I may just bite the bullet and let the local AS dealership work on it.

Also, what furnace would I purchase as an ideal replacement for my trailer? Id like to know so that I can shop around and perhaps get a unit cheaper than what my local airstream dealer sells them at.

Also, can someone go into a big more detail about the ducting for the furnace, as far as where it goes and how to get to it all.

Any help will be appreciated.

Thank you.

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Old 10-15-2013, 08:58 PM   #2
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1974 31' Sovereign
Ottawa , ON
Join Date: May 2008
Posts: 11,170
Images: 25
Here's my experience doing that on a similar model, a '74 Sov.

I had the magical help of a master mechanic though, so I must admit that if I had to do it all by myself, it would have taken a LOT longer to do.

That should land you at post #165 on my thread.

Good luck!


If it's to be, it's up to me.
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Old 10-15-2013, 09:02 PM   #3
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1974 31' Sovereign
Ottawa , ON
Join Date: May 2008
Posts: 11,170
Images: 25
Y'know as for some of your other questions (stove / oven for one) why don't you post some photos of the spot where it is.

The reference to modification is because in the ~40 years since they made my coach, the height of the furnace shrank about an inch and a half, IIRC.

We used some steel from the old scrap furnace to raise it up that much on the plenum, so that we could use the original fresh air/exhaust holes.
If it's to be, it's up to me.
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