The R-1200 and R-1250 are all electric. The R-1200 is a two compressor unit and needs 75AH at full load. They want 4 group 31 batteries to feed it. All this for 6150 btu. The R-1250 is the smaller unit but it only provides 3250 btu/hr.

Dennis 

Sent from my Windows Phone

-----Original Message-----
From: Jeff Schwaia
Sent: Sunday, May 15, 2011 2:11 PM
To: 'Dennis Haynes'; vanagon@GERRY.VANAGON.COM
Subject: RE: Rooftop A/C Experiences 12 volt ac more  seriously-Note

> Don't know about the Thermo King, but the Red Dot that I linked to is all
> electric as well.  Also, it only uses 33 amps (@ 12V) as opposed to the DC
> Airco's 50 amps.
> 
> Jeff
> 
> 
> -----Original Message-----
> From: Dennis Haynes [mailto:d23haynes57@hotmail.com] 
> Sent: Sunday, May 15, 2011 5:35 AM
> To: 'Jeff Schwaia'; vanagon@GERRY.VANAGON.COM
> Subject: RE: Rooftop A/C Experiences 12 volt ac more seriously-Note
> 
> The Thermo King uses an engine driven compressor. The DC Airco is all
> electric and works without any engine power. 
> 
> Dennis
> 
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> Jeff Schwaia
> Sent: Saturday, May 14, 2011 6:00 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: Rooftop A/C Experiences 12 volt ac more seriously
> 
> The Red Dot unit is quite a bit more efficient.
> 
> Not cheap though... about $1500.
> 
> http://www.thermokingintermountain.com/showcaseproductdetail.htm?ID=-20573
> 
> 
> Cheers,
> 
> Jeff
> 
> 
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> Dennis Haynes
> Sent: Saturday, May 14, 2011 10:37 AM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: Rooftop A/C Experiences 12 volt ac more seriously
> 
> http://www.dcairco.com/index.php/products/trucks
> 
> 
> 
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> John Rodgers
> Sent: Saturday, May 14, 2011 12:23 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: Rooftop A/C Experiences
> 
>   Swamp Coolers really only work in very dry climates. I had one in my house
> in New Mexico and it really did a job cooling the place down. But it did so
> by evaporative cooling - which adds moisture to the air. In a dry climate it
> works really great, and is cheaper to run than an air conditioner. The
> principle of the thing is that a mist of water is sprayed between a fan and
> a mesh of some type (in my case wood fiber sandwiched between two plastic
> screens) The fan blows the mist into the fiber, and once wet, as the air
> from the fan passes over the moist fiber the moisture evaporates, thus
> cooling the air as it passes through. This process both cools the air inside
> and raises the moisture level as well.
> In a very dry climate, this is very desirable. However, in a warmer climate
> it's horrible. Makes the air so wet and muggy you cannot possibly get cool.
> For all around use in a vehicle have a working AC unit is the solution. But
> for homes - Swamp coolers in dry climates, AC units for wet muggy climates
> like the Deep South.
> 
> John
> 
> John Rodgers
> Clayartist and Moldmaker
> 88'GL VW Bus Driver
> Chelsea, AL
> Http://www.moldhaus.com
> 
> 
> On 5/13/2011 2:53 PM, Cunegonde wrote:
>> I have a small generator, and I also have built an A/C carrier bracket 
>> for
> the passenger window. This is all fine when parked (and I try not to spend
> much time in places where A/C is a daily use item). However, my cooling
> (burning?) need is while driving.
>>
>> I just contacted the Vintage Air people about Vanagon installation. As 
>> for
> evaporative cooling, any listmembers familiar with swampy.net units, or
> recommendation for better?
>>
>> Cut hole in roof vs. tear apart dash. Hmmm.
>>
>>
>