My RV Air Conditioner Is Too Loud, What Can I Do?

by Mervin
(Lexington, IL USA)

Question: I have a duo therm air conditioner. It cools fine, but it is very loud. It sound like something is vibrating more than it should. I took the cover off on the inside and found four bolts that look like they pull the unit down on the roof. I tightened them a little, but was afraid to tighten them too much. They were still turning quite easily when I quit turning. This had no effect on the noise. What do you suggest I try next?

Robbie: If you have an older AC there is not much you can do. You can have a tech open the top and check the Bushings under the compressor. Keep in mind the older your AC gets the louder they get. New AC's are extremely quiet now with rotary compressors and other new technology. If your AC is so loud you can't sleep and its over ten years old you may want to invest in a new AC.


Comments for My RV Air Conditioner Is Too Loud, What Can I Do?

Click here to add your own comments

Sep 03, 2012
RV Air Conditioner rattling
by: Sandy

We have a 2008 Copper Canyon, when turning on the air conditioner the last night,it was shaking the roof top, you could see antenna shaking on top do to the air conditioner. This started the last time we used the air on a camping trip. When you turn the fan on it does the same thing. The air coming out of the vents is cool it's just that it is shaking when turned on.

May 15, 2016
New AC as loud as old one
by: Anonymous

I replaced my A/C and it has a lot of air related noise. It is a ducted system and ducts are clear and filter is clean. Any suggestions to make it quieter. It is a Dometic 15000 unit with a foam filter. My friends camper that is older is quieter than my new unit.

Jan 15, 2017
2014 puma 30 fbss
by: Anonymous

When the heat or the ac are on the fan never shuts off is that normal on this motel,,?

Oct 07, 2018
The RV AC Silencer NEW
by: Anonymous

I saw this at a rally this summer and it work great. Much quieter and my unit doesn't frost up anymore. It was easy to install and came with everything needed. here is the web site.

Click here to add your own comments

Join in and write your own page! It's easy to do. How? Simply click here to return to RV Air Conditioner Repair Questions.

Enjoy this page? Please help us pay it forward to others who would find it valuable by Liking, Sharing, Tweeting, Stumbling, and/or Voting below.

Have a question about this topic?

Have a question about your RV? Chat with an expert one-on-one now.*

*Chat provided by, a third party not affiliated with MSRVR

Like This Page? Share It!


Have an RV Question?

RV Question Man

Ask A Pro

Browse Visitor Questions

Kind Words From Our Visitors

More visitor testimonials

Robbie Warford, San Diego RV Repair

Hi, I'm Robbie. Welcome to!

Like the name implies, this site is all about helping you save money while keeping your RV in tip-top shape--and that is all about you having the knowledge to do so.

I've been a technician in the RV industry for 30 years, operating out of San Diego, California. And let me tell you, I love my job.

But I also love empowering RVers with the knowledge they need to make the right decision on repairs, or to make the fix themselves--and that, my friend, is the reason for this website. I hope you enjoy.

Or, learn more about me, my RV service practice, & this website here.