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Old 06-02-2016, 06:42 PM   #29
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What's the difference in price?
$81,000 or $82,200?
Get the second a/c.


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Old 06-03-2016, 11:55 AM   #30
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Get 2. We had it in our 30' (before we got the Motorhome). The only real downside is the loss of one of the fantastic fans (the cord is heavy but you get used to it). The loss of fan is a problem but not as big as not being able to cool down the AS in the 90 ddgree plus heat you get in the Southern US.
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Old 06-03-2016, 12:24 PM   #31
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We live in Houston and have a 2016 25FB twin Flying Cloud and we have 2 AC's. Totally recommend it for anywhere in Texas. When in a cooler climate and only have 30 amp, 1 is great.
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Old 06-03-2016, 04:29 PM   #32
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Get two- as a fellow Texan you will not regret it

We had a 06 Safari 25' (live in East Tx) so mainly camp in South and SW, the one AC was marginal on really hot days,,awnings,shade do help some ,but not much when it is 98 and 85% humidity !!! When we got a new FC 25' 2015 we specifically looked for and found one with 2 ACs. After 2 recent trips to Florida and Utah we are VERY glad we had both of the units!!!
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Old 06-03-2016, 07:57 PM   #33
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Resale

Remember that when you sell a large Airstream buyers will be looking for the second AC unit. When you don't need it, use a lighter 30 amp cord. Best of both worlds.
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Old 06-04-2016, 05:43 AM   #34
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We typically use both ACs on our 30 ft. FC, even when the temperature is not oppressively hot. Another point on the second AC is redundancy. I remember loosing the AC on an earlier 30 FT Airstream and we had to endure the Arizona heat while awaiting repairs. With the second AC you have some relief until repairs can be made.
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Old 06-04-2016, 06:46 AM   #35
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What he said^.


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Old 06-04-2016, 04:22 PM   #36
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2 a/c units - one thermostat - Why?

Why does AirStream only have one temperature controller with two A/C units. When one A/C unit goes down the other is down. This is our second 27FB and we have had problems with the Dometic A/C in both trailers. Just happened again with an E1 error. Both A/C inop. The problem was with the rear unit only. We have a 2014 27FB, is it possible to retro fit a second thermostat so that each A/C operates independent of each other.
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Old 06-04-2016, 06:01 PM   #37
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No...
If one a/c quits the thermostat still works the second a/c, but...
If the thermostat quits, neither a/c will work!
Maybe thermostats breaking down isn't common?


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Old 08-11-2016, 11:35 AM   #38
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Quote:
Originally Posted by Llando88 View Post
^^^ Great points.

Brings up a question, for me actually. So, the two AC units are not the same, BTU wise?

I did not know that...interesting. For my 2016 27' FC FB, with two ACs, I gather I have a 15k unit and a 13.5k unit?
You might want to check your records. I thought I had a 15K front unit and a 13,500 rear unit on my 2017 30' International. They are now putting 2 - 13,500 units as standard on 30' AS's. I have found that either unit running by itself is inadequate as regards CFM of air flow.

When I have only 30 amp service(like at my house) I turn on the AC associated with the main cabin and the fan associated with the bedroom AC and the airflow to all ducts is increased dramatically.

Greg
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Old 08-11-2016, 12:17 PM   #39
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Quote:
Originally Posted by m.hony View Post
No...
If one a/c quits the thermostat still works the second a/c, but...
If the thermostat quits, neither a/c will work!
Maybe thermostats breaking down isn't common?


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My trailer is currently at Dependable RV Service in Madison (Gluckstadt) MS for a/c repairs.
As far as I know on my trailer the front a/c is 15,000 BTU and the rear a/c is 13,500 BTU.
The motherboard on the front a/c unit controls the thermostat and the rear a/c unit. This main board may be the source of my trouble. Maybe we will find out soon.
I think it would be better to have 2 thermostats- 1 for each unit- so if there is a failure of 1 unit, thermostat, or motherboard you still have a/c.
The entire system quit Saturday when it was 91 degrees...
The entire system tied/linked together and depending on one component to work all is just simply a bad idea.
Food for thought:
Why in the world do we need a programmable thermostat in a camper?!
No!
We just need off/om, a/c or heat, fan, and temperature.
K. I. S. S.-
There is some reason why a bi-metal spring and a mercury switch will not work on a vehicle that bounces up and down the road, but the thermostat most certainly could be simpler than the Dometic CCC (Comfort Control Center?) II! There doesn't even need to be a Comfort Control CENTER!
There should be 2 separate Comfort Control ENDS...
I wonder if there is a way to retrofit a single thermostat for each of these units. I think the answer is no. They got me!
If I ever need new a/c units I may go with a different brand unit if it will allow to separate systems.
The downfall to the system is the electronic computer controls which I feel are totally unnecessary.
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Old 08-11-2016, 01:01 PM   #40
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Can any one tell me if its possible to recharge the AC in my 1978 AS? The fan works on all speeds still blows a little cool but not enough for hot nights. My AS dealer tells me they cannot recharge with Freeon any more. Is there any alternative?
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Old 08-12-2016, 10:30 AM   #41
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Ashrink12, great idea on using one AC and the other fan. Have you checked the current draw with an AC unit running on fan only? This sounds like a good plan with only 30 amp service.
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Old 08-12-2016, 10:36 AM   #42
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On my Flying Cloud 30, both AC units are controlled by the thermostat in the bedroom--we all know about that. But, I have found that the temperature probe in the Dometic unit regulates the temperature for both zone 1 and 2. There is what looks like a temperature probe next to the TV amidship but it isn't part of the AC control. I am at the dealer and have asked them to figure it out. I understand that a second temperature probe needs to be wired to one AC unit to make it a zone control. Maybe Airstream hooked it up incorrectly at the factory. As it is, zone 1 and 2 are regulated the same by the bedroom control. Any ideas?
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