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Thread: 12 Volt A/C

  1. #1
    Join Date
    Jun 2004
    Posts
    2
    I am looking for a small manufacturer that could produce a small air conditioning system for boats under 24'. The system must meet the following criteria:

    12 volt power
    1,000 - 2,000 btu
    Split or packaged unit
    Affordable price

    If any one knows of such a company please let me know. Our target is small boat owners that need air conditioning away from shore and do not wish to install a generator.

  2. #2
    Join Date
    Mar 2004
    Location
    SE Michigan
    Posts
    17,909
    If you get hot , go for a swim.
    " Kill a Commie for Mommy! "

    - Colonel David Hackworth (1930-2005), Korean War Vet

  3. #3
    Join Date
    Jul 2002
    Location
    NY
    Posts
    1,886
    Originally posted by coolwhip
    If you get hot , go for a swim.
    LMAO
    Not what it use to be

  4. #4
    Join Date
    Jun 2004
    Posts
    2
    Too many sharks!
    This was not intended to be a joke.

  5. #5
    Join Date
    Nov 2000
    Location
    Memphis TN USA
    Posts
    6,945
    It the refrigerators I have seen for trucks and solar house were 24 V.
    If the superheat ain't right it ain't charged right.

  6. #6
    Join Date
    Oct 2002
    Location
    Florida Panhandle
    Posts
    4,373
    May I assume that these are powerd boats, not sailboats. It seems to me unless you want to do some elaborate dc to ac conversion, the best would be to use an automotive compressor on the engine with matching evaporator assembly.

    I havent looked lately but I think J.C Whitney still has those aftermarket a/c systems for automobiles.

    Roy

  7. #7
    Join Date
    Jun 2004
    Posts
    160

    Hmm

    Try a marine a/c company.
    most of the a/c i've seen on boats use ocean water to cool condensor.
    you are still going to use a lot of power unless you use a rv type unit with ammonia in it.

  8. #8
    Join Date
    May 2000
    Location
    Urbandale IA. USA
    Posts
    4,924
    I have heard that their are some 12Vdc roof mounted units for MOTORHOMES that might adapt to your aplication...

    I can't seem to find a link for you, but I think it is Coleman that makes the unit..

    Those who dance, appear insane to those who do not hear the music.
    Those who believe, appear ignorant to those who do not know God.

  9. #9
    Join Date
    Oct 2003
    Location
    South Carolina
    Posts
    1,241
    I've worked on a couple of those rooftop RV units. They are 115vac, not DC or lower voltage. They are powered through the RV's electrical hookup at the camp space. Or other power supply. 12vdc is not enough to run the size compressor you would need to take care of the load on a 24' or smaller boat.
    My father-in-law had a 13000 btu AC unit on his 40' tri-axle fifth wheel RV. I had helped him replace the original 11000 btu unit with that one.
    He also had a battery bank and DC inverter as well as a 5000W 5.0 hp generator fueled by his onboard LP supply.
    The inverter and the generator were not enough by themselves to operate the AC unit, he had to be connected to a 115 vac, minimum, supply.
    I've been out fishing on headboats and they have regular AC units like those used in residential applications. I believe they are powered through an onboard generator as the units only operated when the boat was under way. If the engines were off, the AC's didn't run.

  10. #10
    Join Date
    Apr 2004
    Posts
    161
    Out of curiosity:

    Whats your estimated watt/hrs/day needs?

    How many amp hrs is battery bank?

    What is the dc source(s) and watts output?


  11. #11
    Join Date
    Jul 2000
    Location
    Dallas,Texas
    Posts
    4,952

  12. #12
    Join Date
    Apr 2003
    Location
    Iowa
    Posts
    2,652
    Head down to your nearest Camper dealership.
    There are 3 ways to do anything in life; Good, Fast, Slow: You can pick any 2.

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