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teamfalcon's avatar
teamfalcon
Explorer
Jun 05, 2013

Replacing AC in 2003 Rockwood

I need to replace rooftop AC.

Currently has a Duo-Therm 579 Series Brisk Air 57915.731 13,500 BTU
with a wall thermostat. (Modularized roof Top Air Conditioner)

A local ac tech that I really trust recommended replacement after constantly recharging and with no luck locating the leak.



Stupid question. Do I need to buy the exact same unit?
Class C

4 Replies

  • clydedoerr's avatar
    clydedoerr
    Explorer
    Jun 08, 2013
    If it has the central ducting you may need to worry about it lining up. Non ducted ac you should be able to change to any brand
  • crasster's avatar
    crasster
    Explorer II
    Jun 07, 2013
    The hardest thing is lifting them on the roof if you DIY. :P
  • nadsab's avatar
    nadsab
    Explorer
    Jun 05, 2013
    No.

    We just replaced our unit, the old one was damaged and it was ten years old, even if you buy from a different manufacturer you should be OK

    There are only two standard sizes of Roof air units from what I was told by several dealers. Either 13,5000 BTU of 15,000 BTU. All RV roofs have the same size openings - the roof openings are a standard size.

    Check out this thread from last month...

    http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/26218722.cfm

    If I remember correctly my roof opening size was around 14.5" square for my 13.5K BTU unit.

    The only problem you might encounter, if you buy a different brand AC you might also have to buy a new interior cover with the switch and thermostat for a different unit, if you plan on replacing only the roof portion of the AC. Might cost you an extra 50 to 100 bucks but if you shop around you can get a good deal.

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