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Old 08-14-2015, 05:21 PM   #1
2trackrr
 
1991 34' Limited
Waxahachie , Texas
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Replace AC How much work is it

I need to up grade my 1991 Dometic 13,00 BTu AC and want to up grade to a 15,500 or larger AC/Heat-pump I need suggestions for units and opinions of how difficult of a job is it to do it myself.
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Old 08-14-2015, 05:41 PM   #2
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1981 31' Excella II
New Market , Alabama
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The hard part is getting it on the roof and the old one off. Two guys can man handle the old one off and the new one on. Don't you have two units on that trailer?

Perry
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Old 08-14-2015, 09:47 PM   #3
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2012 28' International
Issaquah , Washington
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I just replaced mine. It's a pretty easy job if you have a way to get the old one off the roof and the new one up there. Fortunately I had access to a forklift. Nothing to it. Lacking some mechanical way to get them up and down, it would be a challenge.
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Old 08-14-2015, 09:56 PM   #4
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How handy and/or mobile are you? If you can get around without any problem, replacing the AC is a piece of cake. All you have to do is separate the bottom from the top, set it on a thick piece of cardboard or something soft but thick like an old sleeping bag that you can use to slide the old unit to the edge of the trailer, bear-hug it as you stand on a SECURE ladder, then SLOWLY come down off of the ladder. Reverse the process to install the new one.

I hefted mine onto my shoulder to go down and up the ladder.

If you are not handy or mobile, find someone who is and entice him/her with food and/or adult beverages, if they are so inclined. Save the beverages for AFTER the project is finished!
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Old 08-14-2015, 10:26 PM   #5
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1990 32' Excella
jonesboro , Arkansas
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Ac

I rented a couple of scaffold sections from home depot.put them 2 high.with 3 walking boards.you can lift the ac up 1 level at a time. Then I put 2 2 x 6 from scaffold to top of trailor you can slide the unit onto the top that way. Good luck.
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Old 08-14-2015, 10:35 PM   #6
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1987 32' Excella
Nepean , Ontario
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2trackrr - it isn't quite as simple as it sounds. The new unit won't just drop into place of the old one, as the condensate drain (the trays that catch the condensate) are not the same. As well, the gasket is different. I had the a/c on my 1987 Excella changed at JC, and it wasn't a quick bolt off and bolt on. Yours is, like mine, a narrow body and does not have the flat center of the roof. Assuming you are still comfortable doing it yourself, look for a place to rig up an overhead winch for lifting and lowering the a/c units. While it is possible to bear-hug the unit like Paul did, remember that one slip on the ladder and the damage you can do to your rig and yourself may not be worth the attempt.
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Old 08-14-2015, 10:44 PM   #7
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Aw, c'mon..... where's your sense of adventure?!?! LOL!!!

Yes, you MUST know your limitations!


Quote:
Originally Posted by blkmagikca View Post
While it is possible to bear-hug the unit like Paul did, remember that one slip on the ladder and the damage you can do to your rig and yourself may not be worth the attempt.
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Old 08-14-2015, 10:55 PM   #8
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1978 31' Sovereign
Hot Springs , Arkansas
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I was up on my roof today to replace a bad start cap. Whoever designed the A/C set up on mine must have had to work on them too. I don't want to change mine anytime soon, but when the day comes, it wont be too bad.

I have scaffolding but found a 14 foot ladder propped against the upper horizontal rivet line worked great and gave me almost complete access to both sides. If you have a friendly construction company close by that has a Skytrak, forklift, or medium trackhoe your life just became easier. You could do all the preliminary disconnects, and have a rope or chain already attached. Same for the new unit. Remove the screws and bolts, hook up and remove. Replace your new unit, attach the bolts and screws and drive it home to finish the install.
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Old 08-15-2015, 11:43 AM   #9
2trackrr
 
1991 34' Limited
Waxahachie , Texas
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Thank You all

Thank you for all your suggestions. The scaffolding sound the best. Ive been on my roof often and think having planks to walk on best. Does anyone know of a 18,000 BTU unit?

Thanks 2tranksrr
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