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morz4 06-02-2013 08:46 AM

Portable Spot AC Experience?
If you have experience using a portable spot AC unit, I would appreciate your input. Here's an example: Portable Spot Air Conditioner: Home & Kitchen

We have a 13' Scamp with front bath. Need for AC will be very infrequent. We are not interested in a permanent installation.

David B. 06-02-2013 10:15 AM

I have not used one in our 13' Scamp, but whenever we have remodeling done at work, the contractors use larger versions of these to cool very large areas, and they appear to work fine. If you have room in your tow vehicle, this appears to be a great idea. If you go this route, let us know how it works out, as I would probable then purchase one also. There was a posting someone who had a burro did that I think could be incorporated into the portable use refrigeration unit. They used round (sealable when not in use) vent holes, that appear to be approximately the same size as the cooling tube of the portable unit. One could even have a glass company cut a round hole in the small frosted glass by the sink, to install one of these covered vents, if you didn't want to cut through your fiberglass body.

Brian B-P 06-02-2013 01:12 PM

Any air conditioner moves heat from somewhere you don't want it to somewhere else.
  • Built-in air conditioners have a part (with the condenser) outside of with access to outside air, so they blow hot air outside to get rid of the heat.
    To have parts both inside and outside
    • small units normally install through a wall or window
    • large whole-building units are split between an indoor unit mounted like a forced-air furnace and a box mounted outside covered in vents (with plumbing between them)
    • some small split units have an outside mounted box and an inside wall-mounted box (with plumbing between them)
  • Portable air conditioners use a hose to vent the hot air outside (and preferably another one to bring outside air in), again to get rid of the heat.
    • Sometimes these are shown in ads without the hose to the outside, misleading potential buyers about the actual installation requirements.
  • There are some "spot" air conditioners which blow cold air in a very localized area, and just dump the heat into the same room, out the back or side of the unit.

Any system which does not send the heat outside will heat up the room it's in. For one person working in a factory, the cool spot around them may be all they need, and the extra heat in the big room might not matter. In a small room, trying to make one spot comfortable while putting hundreds of watts of heat into that same room seems entirely futile.

I suggest finding out what type any proposed unit might be, and ensuring that the experience of others applies to that type.

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