A/C Noisy

[timmy2toes]

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.

[DutchF]

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???

[BigTJohn]

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.

[Pirates55]

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.

[jonrjen]

Our 13.5 front bedroom low pro unit is pretty loud also as from what I have heard is the standard for this setup.

[MillerTime]

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

Millertime- Sabre Handler

[MillerTime]

Op
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.

[Pirates55]

I guess we got lucky. Our low profile isn't loud.

[OldCoot]

Originally Posted by timmy2toes

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.

[Pbalmer65]

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.

[Weezer]

Originally Posted by Pirates55

I guess we got lucky. Our low profile isn't loud.

X2 I thought when we bought the 5er "well we'll never use THAT thing, it's dang near 3' above our heads while sleeping".

I was wrong. Hot air rises, so the bedroom in a 5er is naturally going to be warmer than the salon area.

It's not loud at all, and it negated my need for a small fan on the nightstand at night, providing "white noise".

(we close the vents and shove the air through the duct work, otherwise we'd have frozen noses!)

[VinceU]

Originally Posted by timmy2toes

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.

If that unit is a '15 its unreasonable to accept a balance or bug problem or anything else. I'd find a Dometic shop, lots of shops are so labeled as these are used in land trailers too. Let them certify its ok as is or change it under warranty. If its that bad already, it will self destruct in short order.

[amxpress]

Dometic is aware of this condition. They offer a kit that can be installed to reduce the vibration. If the unit is still under warranty and you have an earlier designed unit, it can be replaced with a newer designed unit that is suppose to be quieter.

[lgray]

Originally Posted by VinceU

If that unit is a '15 its unreasonable to accept a balance or bug problem or anything else. I'd find a Dometic shop, lots of shops are so labeled as these are used in land trailers too. Let them certify its ok as is or change it under warranty. If its that bad already, it will self destruct in short order.

Agree completely with this thought. If they offer a “kit”, and still under warranty, I would push for replacement. My 320, was one of the problem units from Dometic. The compressor blew on our second trip…never had a chance for a kit to be installed. However, I have read on the Forum, where other owners installed the kit, only to have it blow shortly thereafter.

[Spartans]

Dealership is working on ours. Apparently they found on ours that the mounting bolts weren't tightened to proper torque and it was causing it to vibrate. There is also a new Dometic unit with a different compressor that is supposed to help.

[Witch Doctor]

Originally Posted by amxpress

Dometic is aware of this condition. They offer a kit that can be installed to reduce the vibration. If the unit is still under warranty and you have an earlier designed unit, it can be replaced with a newer designed unit that is suppose to be quieter.

x'2 on this fix, they know about it and came out with this kit that is really an isolator pad. Dometic has now gone to all plastic and molded foam. The reason why is so they can ship UPS instead of trks for the weight. They couldn't send the units by UPS. I'm not sure but they could have also went to rotary compressors. This is what I was told by my dealer at least. So take it with a grain of salt. I should say my X dealer.