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Old 04-12-2008, 11:56 AM   #1
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Air Conditioner Noise

Hello:

We I think this may have covered many times but I am new to RVs and Airstreams. I just bought a 2007 27 Ft Safari SE but I never listened to the A/C run. I turned the A/C on today and the noise and rattle even on low speed is terrible. Is this normal ? if so with all the technology and cost of Airstreams I would be a bit surprised. What could my wife and I do to fix the problem ? bigger unit ? any help is greatly appreciated and we love the Airstream but certainly there must be a fix.


Thanks
Tom
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Old 04-12-2008, 12:22 PM   #2
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It depends what the noise sounds like. There could be the possibility that the "squirel cage fan" set screw has come loose and the fan is rubbing on fan shroud. Or if it is more of a deeper rumbling sound it could be the compressor. Have you contacted your Dealer? You should have AC checked by Dometic Authorized Dealer.
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Old 04-12-2008, 05:55 PM   #3
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Then again, the noise could be (gasp!) normal. Have you owned an RV before? Airstream does use regular air conditioner units on their trailers, there is nothing special about them.
I have heard a/c units from relatively quiet, to ones that sound like an idling truck. All from the same brand of trailer and a/c.
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Old 04-12-2008, 09:36 PM   #4
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It could be mud dauber nests on the exterior fan blades. The nests weigh enough to knock the fan out of balance. Just break up the dirt nests and scrape off any excess material on the blades.
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Old 04-12-2008, 11:29 PM   #5
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Our A/C noise is enough to wake the dead, and we've got a newer model. We've become accustomed to it - and try not to use it unless necessary.
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Old 04-12-2008, 11:31 PM   #6
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Flint,

Your Dometic unit should NOT be making unusual noises. As stated above, you might have squirrel cage fans out of balance, hitting the shrouds or have mud dauber nests unbalancing it. You also might have a bad fan motor.

Since you are still covered by your Dometic warranty, you should take the trailer to a certified Dometic service center (probably your A/S dealer) and have it looked at.
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Old 04-13-2008, 09:24 AM   #7
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A/C Noise

Thanks for all the reply's and the sound this unit makes is enough to wake the dead !! We have never owned an RV before so I am surprised at the level of noise this thing makes. It even shakes the RV. Has anyone upgraded to a larger unit ? and if so did this solve some of the problem ?


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Tom w/noise
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Old 04-13-2008, 09:38 AM   #8
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15K btu is the biggest there currently is. Do you know how many btu yours is?
Also, the amount of noise is not normally related to the btu of the unit.
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Old 04-13-2008, 11:32 AM   #9
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When we first used the A/C on our Interstate, I couldn't believe the air handler noise. If you go outside the camper, it is very quiet, can hardly tell it is on. But inside... wow.
I took it to the dealer, and it was checked over carefully. Nothing found.
I think the designers were concentrating on reducing the external ambient noise. If you want to be cool, well, that's part of the price, like the electricity..
Just my opinion.
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Old 04-14-2008, 07:03 AM   #10
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The unit we have is either 13k or 13/5k so maybe an upgrade would reduce some of the noise.


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Tom
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Old 04-14-2008, 08:10 AM   #11
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Quote:
Originally Posted by flint
The unit we have is either 13k or 13/5k so maybe an upgrade would reduce some of the noise.


Regards
Tom
If you plan to camp where it's pretty hot, it would be a good upgrade, but don't change it out just on the chance it will be quieter, it's an expensive experiment.
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Old 04-15-2008, 05:59 AM   #12
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Thanks for all the feed back and we may opt for a small portable A/C unit to help out the 13/5k we currently have.


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Tom
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Old 08-01-2008, 11:46 AM   #13
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Quieting A/C Rattle

We have a nice 13.5K BTU Carrier V unit, but sometimes it shakes the unit pretty good, and rattles the tambour cabinet contents. I know the compressor cycling is a significant bump, but it sure seems more obvious than the SOB's DuoTherm behavior.

The dealer's A/C tech said "they all do that."

Any suggestions apart from tightening the mountings? Has anyone used rubber washers on those four big hold down bolts, to help dampen the shake?
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Old 08-01-2008, 12:01 PM   #14
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I'd have the unit checked for a warranty repair. Normally the blower makes some fan noise, but they shouldn't rattle.

A larger unit generally uses the same blower and most components are nearly identical. Look for the larger unit to give a little better cooling, but not be any quieter.
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