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Old 07-06-2003, 06:21 PM   #1
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I just purchased a 68 Globe Trotter and need AC as I live in Dallas. I do not know why but I just do not want to put the AC on the roof and have looked at portable AC's as an option. I have seen 12,000-13,000 BTU models with heat for under $600.00.

I would think a vent out to one of the outside access doors running the heat exchage under the front pull out would be perfect. Anyone have thoughts on this option? There are only two of us and I do not see space too much of an issue.

Another plus is that I could roll it out when not using the Airstream and cool off the garage when fixing it!!!

I would love to hear anyones thoughts about this. I assume 12,000 BTU's is enough for a Globe Trotter, at night the bathroom pocket door would be closed.

Bryan
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Old 07-06-2003, 07:59 PM   #2
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I think its a great idea. In fact that was my plan on the Traveler, but ended up selling it. I think the roof mount A/C looks odd on a small trailer.

Ken J.
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Old 07-06-2003, 10:24 PM   #3
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location is just one issue....how about electricity?....12,000's need 110X30 amp svc some need 220 at 20 amps....geof
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Old 07-07-2003, 05:54 AM   #4
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Hi Geof

I was looking at the specs - it says:

Power Source 120V - 60Hz
Rated Current 9 A

The rated current 9A - would that specify that with this unit plus whatever I was running with the AC on I would need 30 amps?

I am not very savvy when it comes to electricity-
Thank you for your comment.

Bryan
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Old 07-07-2003, 06:38 AM   #5
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hot air rises...

My only concern about floor-mounting an air unit would be that it won't cool very efficiently. The ceiling is where the heat is. A roof mount unit intakes that hot air, and blows cold to the interior allowing for the cool air to mix with the hot and cause convection throughout the system. I'm not sure that, at least in concept, a floor mount unit would work nearly as well.

Roger
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Old 07-07-2003, 09:11 AM   #6
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The relative efectiveness of any RV Air Conditioner, depends on the air distribution.

A ceiling mounted AC is ideal in that it picks up the warmest interior air, cools it and the distibutes it both for and aft.

A floor mounted AC will not perform those functions.

A "basement" AC works because the air is ducted to the ceiling.

On the other hand, why do we want an AC?

Is it for looks, or personal comfort?

When it comes to personal comfort, some compromises are a given.


Andy
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Old 07-07-2003, 09:23 AM   #7
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In most motels the AC is near floor level, and cools perfectly.
I love this idea & am going to consider it seriously.

Hart
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Old 07-07-2003, 09:29 AM   #8
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I have used a portable

I have used a portable for the past couple of years.

I made a cardboard template that replaces the screen in my back window. (Window cranked out) and the hot air is vented through there.

It has oscillating louvers that move the air left to right and fixed louvers that can shoot the air up or down. I supplement that with a clip on fan mounted toward the ceiling ... blowing downward. Condesate is drained through the shower drain.

This combination does a good job of reducing heat stratification
at the ceiling level ... but then again I dont sit at or near the ceiling ... I sit on the goucho's.

Granted I only have a 17 footer. The unit is a 9,000 BTU.
Total cost for a non profile ruining, not hauled around for 10 un-needed months of the year for not, solution ... $250.00

DMC
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Old 07-07-2003, 09:43 AM   #9
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Portable AC

I am attracted to the fact that I can take this thing from the Airstream, use it in my garage, or in my home office where in the summer, my home AC never gets it as cools as I would like.
I bet 12,000 BTU's would do a good job cooling a 20 foot trailer-
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Old 07-07-2003, 09:50 AM   #10
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Sorry, I fail to see the comparison of a motel room, that is part of a building, that is usually shaded on three sides, to an Airstream trailer, that bounces down the road, punishing equipment that was designed to sit still, and at the same time being exposed to the mercy of the sun.

Additionally, the motel AC units have a considerablty larger cooling coil than any RV airconditioner, let alone that of a household window unit.

Warm air rises, cool air falls. If the cool air is exhausted at the floor line, your feet will be comfy, and that's about all.

Mounting a window type AC, in place of an Airstream window, is not recommended because of the weight distribution, and, the shell not being designed to take added weight, especially when hitting bumps. If the trailer stays stationary, then that's a different matter.

All too many times, make shift installations result in costly repairs at a later date.

Ask those that bought such a trailer.

But, to each his own.


Andy
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Old 07-07-2003, 09:59 AM   #11
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Bouncing Portables

My Portable rides in my tow vehicle when enroute to a campsite.

Only the exhust tube sits in the window. The "unit" is an upright
and looks much like a dehumidifier, A little taller and narrower.

No problamo.

DMC
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Old 07-07-2003, 10:11 AM   #12
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A Picture of another option

http://www.zianet.com/rlashway/

Saw this several years ago ... Was my inspiration to NOT
have a roof mounted A/C

Thus the portable, NOT window mounted option.

DMC
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Old 07-07-2003, 10:14 AM   #13
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Andy, I guess this is for you. If I decided to go with the roof mount, how many labor hours would you guess it would take?

Airstream says I have the electric, but it is a 68 GT and I guess it does not have the drain.

Approximate is very OK

Thanks!

Bryan
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Old 07-07-2003, 10:21 AM   #14
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Cutting the hole, beefing up the roof, adding a drain line, installing the AC, and final check out, would take us, in our shop, about 4 hours.

Andy
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