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Old 06-26-2014, 07:54 PM   #71
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That is the cool premise of ducted air - that fan is über noisy in my unit

My volume with the surround is not a bother to me but I can totally see the benefit!
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Old 06-26-2014, 08:15 PM   #72
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Quote:
Originally Posted by rodsterinfl View Post
When I got my AS I changed the air distribution box right after our first trip. It made a huge difference in airflow.
Could you provide some more information on this please?
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Old 06-26-2014, 10:35 PM   #73
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Great questions. Of course only a scientific study would be of use to those who want the hard evidence, but, a couple of notes. My 2009 Int Ocean Breeze 27FB could run the A/C on low without freezing. The ducted A/C in my Allegro bus could run all night on low with no freezing problem.

About the noise, it makes little difference what the numbers show because it is a subjective conclusion arrived at based only on one's knowledge base. For me, the new ducted A/C is markedly less noisy.


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Old 06-26-2014, 11:22 PM   #74
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Subjectively, my unscientific ear says that ducted fans at the same distance and output will normally sound quieter than the non-ducted variety. Certainly being able to hear the television with the A/C powered up is a very positive consideration and IMHO a significant subjective measurement.
Stay tuned; we just put down a deposit on a 2015 today! So, those of you who say that you actually prefer the noise from the earlier units may seek out our trade in at AANW in Seattle; Eddie is a beauty!
No offense meant, but why do these threads so often degenerate into old is better than new ... ??? I am an older phart but I do appreciate the technological improvements ... I like the large flat screen TV and have no difficulty seeing if the booster is turned on ...it beats an older one where we had to look under the table!
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Old 06-27-2014, 12:04 AM   #75
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Aside from the noise the AC in my 2013 Cloud does not cool down the rear bedroom.
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Old 06-27-2014, 12:49 AM   #76
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No offense meant, but why do these threads so often degenerate into old is better than new ... ???
I do not take it as that with regard to this thread. The discussion is on ducted air. Another question might be raised as, is newer always better? Aside from condition of course. Naturally one can update and certainly ducted air draws a considerable interest to the AS crowd as a new design. My hope is that it is better- the AC design needs to be improved upon in RVs. I have now, as of today heard now four different ducted systems running in SOBs- now two in Colemans that I reported on with a sound meter to compare to my own AC running on high, and two Class A motorhomes- Thor diesel and one Newmar Baystar gas. I did not have the meter for those but The Thor Palazzo AC was awful. Besides the air blower sound there was a panel rattling somewhere in the ceiling, not a vent and it was a talk over it situation.The salesman was going to write up a ticket on it for service. The other one was quieter but don't know how much. The motor was in the front too so there was that sound. Today was perfect to look as it was 97 degrees and AC would be required.

I can talk, watch TV, etc with my air on. It is the same dB level as riding in my truck@70mph.Reviewing the threads here, some of us have different setups. I have a basic controls on unit model. I have to set the temp knob (variable) and fan speed (two settings) and, I live in FL where the one poster mentioned freeze ups are common- which, there is a reason for that- unit overcooling/airflow. That would not be less the case in a lower humidity area. Also, I have a low profile penguin unit. As I have said, my unit is very quiet motor-wise. Outside the AS and inside. The noise is the air blowing sound. That is what I heard in the Colemans and the MHs. The Colemans sounded like they had a unit at each outlet. The blowing sound is not diminished because the vents are unlocalized. The meter indicated it too! My point is not to attack what I do not have but to investigate this perceived improvement.

I will eventually get to test an Airstream ducted system with meter.

BTW, when I was at the Rally last year, there was a couple who visited my AS to hear the AC unit running. They had a 2010 Ocean Breeze that they said the AC was super loud and wondered what other units sounded like. I invited them. They said it was definitely quieter but again, subjective. I wonder if there was a difference in the gas used in the units and the noise level?
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Old 06-27-2014, 02:35 AM   #77
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The design of the ceiling assembly in the non ducted units was changed a couple of years ago, and I do not think the end result was a positive one. The new ones are much noisier, as well as no longer being able to use a heat strip in them. On the positive side, the newer ceiling assembly looks better, is lower profile, and has fewer sharp corners for taller people to whack their heads on.
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Old 06-27-2014, 05:36 AM   #78
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Side note: there are lots of decibel/Db meters you can download from app stores for $1 or free. They may not be accurate enough for science but likely accurate enough within their own app to judge a difference between ducted and non ducted in relative terms. Have fun! :-)
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Old 06-27-2014, 06:52 AM   #79
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I was in both the 2015 Classic and the Land Yacht that Airstream presented at Alumapalooza. I was happy to see the ducted A/C and asked the representative to turn on the system specifically to hear how much the noise was reduced.

Maybe my expectations were too high, but I was seriously disappointed that it didn't reduce the noise much. I know that goes against what other people are saying, but that was my observation.

Here are a few photos that show the a/c.
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Old 06-27-2014, 09:11 AM   #80
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As a side note, I was up ridiculously late last night to find a discussion on wanderlodgeowners.com about Dometic changes that linked to a Dometic article. In 2010 following EPA requirements they changed to R410 refrigerant. The change required a different compressor/system. They called it Penguin II with improvements but the change was not an improvement. They used "hard grommets as sound deadeners for the compressor mount which transfers noise" and some of the owners got a hold of a service bulletin that shows refitted soft grommets with white dots on them. Supposedly it makes the units quieter "like the older penguin models" as far as the motor is concerned. Still digging for more info.

I like that counter and floor in the Land Yacht TinLoaf. I think the changes have brought AS up to par with the market.

Great idea SteveSueMac. I will download right away and compare readings to the meter.
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Old 06-27-2014, 08:59 PM   #81
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Sorry, you are right it does have a booster hidden just behind the tv. I was so happy to not have to crank up an antennae and point it, that I didn't notice the booster and had been told by service that there wasn't one.
This is our 4th Airstream so we are very aware of the difference between ducted and non ducted air. We are very excited and happy to have been able to move up to the 2015. The noise level is very noticeably quieter. We have already traveled with it and are very satisfied.
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Old 06-27-2014, 09:04 PM   #82
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My house air intake near where we watch TV - I need ducted AC in my house

Swear it's freakish g loud in my house
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Old 06-27-2014, 09:12 PM   #83
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I recently replaced a swamp cooler with ducted air in my house. Ducted air is definitely a lot quieter..... not to mention cooler and less maintenance.

In my 2013 Airstream I can't imagine anything noisier than what's installed.
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Old 06-29-2014, 06:45 PM   #84
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My house AC air intake is super loud -
I downloaded one of those decibel apps - 77 decibels in the hallway right next to air intake vent

In TV area when it's on it's 60 decibels
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