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c.traveler2

Moreno Valley,Ca.

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Posted: 08/03/21 07:27am Link  |  Quote  |  Print  |  Notify Moderator

A newly posted article on RV air conditioning units, some are DC operated.

AC units


2007 F-250 4x4 /6.0 PSD/ext cab/ 2020 Bunduvry

Lance 815/ 85 watts solar panel (sold)
2020 Bunduvry by BundutecUSA

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Kayteg1

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Posted: 08/03/21 08:37am Link  |  Quote  |  Print  |  Notify Moderator

Very lousy job comparing.
RecPro 9.5 is listed as taking 12.6 amp, when actuall measurements are about 1/2 of that
Somebody got paid for promoting certain brands?





valhalla360

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Posted: 08/03/21 08:55am Link  |  Quote  |  Print  |  Notify Moderator

Kayteg1 wrote:

Very lousy job comparing.
RecPro 9.5 is listed as taking 12.6 amp, when actuall measurements are about 1/2 of that
Somebody got paid for promoting certain brands?


If you are going to mix 120vAC and 12vDC, at least convert to watts, so the reader can compare easily.

But also, you need to adjust for BTU output
- A duty cycle estimate would also be important. Who cares if the 12vDC uses 25% less watts but runs twice as many hours per day.
- A low BTU unit may not even get the interior down to a reasonable temp, so it really needs a defined test. A small unit may do OK in a smallish truck camper but fail miserably in a larger campervan that has a much larger interior. (unless you are in a desert, the swamp cooler is all but useless)

A simple table with the key data points would go a long way towards making this a useful article. At the very least follow a consistent pattern in writing the paragraph for each unit using bullet points so it's easy to find the data.


Tammy & Mike
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c.traveler2

Moreno Valley,Ca.

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Posted: 08/03/21 09:13am Link  |  Quote  |  Print  |  Notify Moderator

Kayteg1 wrote:

Very lousy job comparing.
RecPro 9.5 is listed as taking 12.6 amp, when actuall measurements are about 1/2 of that
Somebody got paid for promoting certain brands?


Mello Mike is a personal friend of mine and he received NO money for writing this article. So your cry's of "someone got paid" are unfounded and stupid!

The 12.6 amp is directly from REcPro website

* This post was edited 08/03/21 09:22am by c.traveler2 *

mr_andyj

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Posted: 08/03/21 10:15am Link  |  Quote  |  Print  |  Notify Moderator

Let's just ignore Keytag

Nice article. It did not seem to intend to be a comparison chart between each unit exactly. It is an article about different AC options for the TC crowd. Good info. Most of these I have not heard of, so now I know.

The DC units intrigue me in that they run without a generator or hookups. Given enough solar and battery you have AC while in the boonies without daily gasoline refills... IT states amp use, but that is when the compressor is running, so the calculation would be based on what % the compressor runs and then how many amps just the fan draws. 300 amps of available battery and 29 amp draw would give 10 hours of use, but in reality the compressor cycles so it could be much more. Enough solar on the roof, the entire roof, and sun and all is good.

I dont have the space on the roof or the desire to deploy ground panels, so maybe the next RV for me....

pianotuna

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Posted: 08/03/21 10:21am Link  |  Quote  |  Print  |  Notify Moderator

Thanks for the link.

Mello Mike is one of the good guys imo.

Keytag is right about having a chart. He often offers good advice.

* This post was edited 08/03/21 10:39am by pianotuna *


Regards, Don
My ride is a 28 foot Class C, 256 watts solar, soon to have SiO2 batteries, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

c.traveler2

Moreno Valley,Ca.

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Posted: 08/03/21 10:46am Link  |  Quote  |  Print  |  Notify Moderator

pianotuna wrote:

Thanks for the link.

Mello Mike is one of the good guys imo.

Keytag is right about having a chart. He often offers good advice.


Are you using those Sio2 batteries yet, looks interesting.

valhalla360 suggested the chart.

adamis

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Posted: 08/03/21 10:54am Link  |  Quote  |  Print  |  Notify Moderator

The Dometic Coolaire 2000RTX really looks like the best solution for Truck Campers and will be at the top of my list...

"19.5 amps DC in the Eco mode and 29 amps DC maximum"!!!

https://www.nomadiccooling.com/product-page/dometic-coolair-2000-rtx-12v

That is incredible! Sure, it may not keep up in 120F weather but 100F weather looks like it will be just fine and that is what we experience 99% of the time. Couple this with some good solar and some nice LiFePo4 batteries and you are set for most situations.

Granted the expense of $2800 is a lot more than the RecPro or the Coleman Mach 8 but I think the performance is worth the cost for my personal needs.


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pianotuna

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Posted: 08/03/21 11:33am Link  |  Quote  |  Print  |  Notify Moderator

c.traveler2 wrote:



Are you using those Sio2 batteries yet, looks interesting.

valhalla360 suggested the chart.


With covid preventing me from picking them up--and income in a nose dive for the same reason, I'm going to wait a year. I may do massive solar first as well.

adamis

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Posted: 08/03/21 12:50pm Link  |  Quote  |  Print  |  Notify Moderator

Kayteg1 you are being a bit overly negative on the value of this article. Of the 5 units listed, I only was aware of just 2. The other three were options I had no knowledge about and actually find to be very interesting. Sure, it wasn't an in the weeds article that one could geek out on the numbers but I don't think that was the point. Unless you are willing to do the legwork yourself to get the level of detail you want, don't knock others for the effort they put in themselves. Any information is much better than no information.

Also, your first hand experience with the amperage draw though a valuable insight doesn't make the article wrong. Possibly what is happening here is the amperage draw being reported is the starting amperage and that is always higher than the running amperage. Manufacturers have to rate their equipment on what it draws to get it running so it is going to be higher.

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