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Old 06-11-2014, 04:46 PM   #1
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A/C Noisy

I have a new 2015 34REQS-P with the low profile
dometic 13.5 A/C in front bedroom.
Does anyone out there have problem with the
high noise level when compressor is running
we can hear the vibration in the whole trailer.

Does anyone have this problem and a fixe for it.
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Old 06-11-2014, 04:56 PM   #2
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I doubt this will directly answer your question, but...

Our rear A/C on high fan, creates a thrumming sound / vibration. It is due to the fan cage being just a tad out of balance. That said, the first step should be to inspect the fan and ensure there is no debri in it that might cause an imbalance.

Regarding compressor noise... I really don't have a suggestion, unless you can identify a better means of isolation mounts (rubber mounts). Even then, it is still a pretty straight and open shot for noise to come down into the coach through the intake (very noisy!) or dump panels.

Hmmm.... maybe a little judicial application of sound deadening mat???
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Old 06-11-2014, 04:58 PM   #3
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Happens to most front ACs. Dometic has a newer unit with vertical compressor instead of horizontal. It could make a big difference. Also, they have a "sound dampening" kit which is supposed to help as well.
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Old 06-13-2014, 08:45 AM   #4
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I have the low profile a/c on my sabre 36QBOK-7 and we leave it on all night. My wife actually turns the fan on low during the day if the a/c isnt running when she and the kids take naps. We actually think it helps block out the outside noise of the campground. Its not unusually loud. Its a nice constant sound. I figured only being a few feet away from the a/c unit sleeping that it wouldn't be whisper quiet. All in all we like ours with no complaints.
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Old 06-13-2014, 09:20 AM   #5
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Our 13.5 front bedroom low pro unit is pretty loud also as from what I have heard is the standard for this setup.
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Old 06-14-2014, 11:43 AM   #6
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Thats the reason we went with the standard profile 2nd ac.
Id heard the same thing about the low pros being more noisy.
But the low pros look less dorky for sure!
Hopefully the new ones are better, just didnt want to find out

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Old 06-14-2014, 11:52 AM   #7
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Ive heard people some have needed to raise the cover, cause it was touching the roof and vibrating more.
Might also check the bolts and make sure everything is still nice and tight.
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Old 06-15-2014, 07:34 AM   #8
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I guess we got lucky. Our low profile isn't loud.
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Old 06-15-2014, 07:57 AM   #9
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Quote:
Originally Posted by timmy2toes View Post
I have a new 2015 34REQS-P with the low profile
dometic 13.5 A/C in front bedroom.
Does anyone out there have problem with the
high noise level when compressor is running
we can hear the vibration in the whole trailer.

Does anyone have this problem and a fixe for it.
Would remove the cover and inspect the fan blades for mud dauber nests, etc.
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Old 06-15-2014, 11:04 AM   #10
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I have the low pro 13.5 and my issue is that it causes a vibration noise that is only bothersome when laying in the bed. It's like it echoes in the slide-out. It's not heard or felt anywhere else in the trailer.
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