Replacing existing AC unit

Discussion in 'Heating / Cooling Systems' started by dlwilliams, Feb 4, 2008.

  1. dlwilliams

    dlwilliams New Member

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    I have a 1990 Starcraft with a 7500 BTU unit. That is what it came with. Frankly, it is not doing the job. I camp for a couple of weeks in TX each year and it gets pretty hot. After the first year I bought the bunk end covers and that helped. I'm thinking of making the reflective panels for this years trip, but I'm thinking that I will eventually replace the 7500 unit with one nearer 14000. My pup has at least a 12 foot box so it is not small. I'm not sure why the AC unit was so small for this size camper, but oh well. Now to the question... seems like it would not be a big job to remove the existing unit and put in a new one. The roof access and bracing is there as well as the outlet. I'm pretty handy, but is there anything in particular I should look out for? If I decide to keep the pup for a few more years, I will almost certainly replace the existing AC.

    1990 Starcraft Starmaster
    2006 Toyota Tacoma
    Days camping 2006 - 11
    Days camping 2007 - 0
    Days reserved 2007 - 12
     
  2. turtle

    turtle New Member

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    My only input is to go with a 15500 unit, not the 13500. For the extra few dollars you will insure you have what can do the job. I have a 13500 unit on my 10' box and last summer it was really hot and although it kept us cool sometimes it barely kept up.

    06 Fleetwood Graphite
    96 Jeep Grand Cherokee
    Ron, Diane and the Lab mix, Cody
     
  3. mostlyok

    mostlyok We're Mostly OK!

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    My concern would be how do you SAFELY lift the old unit off the roof, and how do you SAFELY put the new big unit in? I would not want to walk on my PU roof, but heavy lifting is best done without extending the load away from the body. Sounds like scaffolding or crazy ladders to keep off the roof.
    Paul of MostlyOK

    Heidi & Paul <img src=../Images/icons/icon_smile_camping.gif border=0 align=middle alt="Camping"> are MostlyOK http://community.webshots.com/user/mostlyok
    <img src=../Images/icons/icon_smile_pu.gif border=0 align=middle alt="PopUp"> '94 Starcraft Space Flyer
    <img src=../Images/icons/icon_smile_jeep.gif border=0 align=middle alt="Jeep"> '05 Jeep Wrangler Unlimited
    If its got zippers and Velcro it's got to be fun!
     
  4. grcooperjr

    grcooperjr Lunatic

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    <BLOCKQUOTE id=quote><font size=1 face="Verdana,Arial,Helvetica" id=quote>quote:<hr height=1 noshade id=quote>
    I have a 1990 Starcraft with a 7500 BTU unit. That is what it came with. Frankly, it is not doing the job. I camp for a couple of weeks in TX each year and it gets pretty hot. After the first year I bought the bunk end covers and that helped. I'm thinking of making the reflective panels for this years trip, but I'm thinking that I will eventually replace the 7500 unit with one nearer 14000. My pup has at least a 12 foot box so it is not small. I'm not sure why the AC unit was so small for this size camper, but oh well. Now to the question... seems like it would not be a big job to remove the existing unit and put in a new one. The roof access and bracing is there as well as the outlet. I'm pretty handy, but is there anything in particular I should look out for? If I decide to keep the pup for a few more years, I will almost certainly replace the existing AC.

    1990 Starcraft Starmaster
    2006 Toyota Tacoma
    Days camping 2006 - 11
    Days camping 2007 - 0
    Days reserved 2007 - 12
    <hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana,Arial,Helvetica" size=2 id=quote>

    I agree with Turtle... Go with the bigger unit.
    Myself, I installed a Carrier Air-V low profile on mine((See link))
    It works really well and just over 6 inches tall, but a bit more expensive than the standard height units

    Ray Cooper
    Tigard OR

    2007 Hummer H3(DW)
    2007 Fleetwood Evolution E3
    The boys... Buddy, Toby, Ralphie, Sammy, & D.B."Cooper"
     
  5. Gambit...

    Gambit... New Member

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    mostlyok,

    Most AC units are toward the front or the back.
    I installed one on mine last summer. What I did was to pop-up and pull out both beds and brace them like I would normaly do. Then I put the top back down until the top almost rested on the beds. My brother and I then lifted the AC unit up on the rear bed, and from there, it was a simple task for the two of us to lift it into place on the roof, center it and cinch it down.

    I had a cool Fall season last year. :)

    Kim
     
  6. dlwilliams

    dlwilliams New Member

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    Thanks for the replies. I guess I wasn't thinking about the weight of the unit. I have problems sometimes with my back and I would sure hate to mess it up just before my trip. Not sure how much the new unit would weigh either. But I gather that it would not be a big job to remove the old one and install the new one, other than physically getting the old one off and the new one in place. Maybe for this year I'll just make my reflectix panels and delay a new AC until next year. Maybe by then I will have convinced my DW that I need a new PUP. Seems a shame that even though my PUP is older, it is in excellent shape (other than the A/C not doing the job).

    1990 Starcraft Starmaster
    2006 Toyota Tacoma
    Days camping 2006 - 11
    Days camping 2007 - 16
    Days reserved 2008 - 12
     

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