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Old 06-03-2019, 11:11 AM   #15
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Our experience exactly. We never used the dump vents either. Using a dB app on my Iphone, I measured a 8+ dB drop between the 2 AC units.
We can now listen to the TV without the neighbors hearing it!
They silencers fit perfectly on both units.


Quote:
Originally Posted by A Traveler View Post
As jmck1737 said, you can no longer use the direct air out of the AC when using these silencers. The air only runs through the ducts.

For us that wasnít an issue because we never ran the AC that way. It didnít cool any better and it was even noisier with the direct air open.
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Old 06-03-2019, 11:21 AM   #16
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I wonder if there is an reduction in the air intake when using this baffle? I wouldn't want to damage my new A/C units!
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Old 06-03-2019, 04:59 PM   #17
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I guess I'm gonna join the Wackos! I ordered one today for my Dometic High-Capacity heat pump in the front area. If it's as good as claimed, I will probably order another one for the bedroom.

I did run into one minor problem. Our Windsor has a wood frame and grille and the size is 17 5/8" square. The Wacko is 17" square, so I will lack a little over 1/4" covering the indention created by the old frame. I'm hoping this won't be too noticeable.
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Old 06-03-2019, 05:13 PM   #18
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Quote:
Originally Posted by A Traveler View Post
That's odd. The unit I purchased and installed was a perfect fit on the existing AC frame.
You guys that say it was a perfect fit would help us a lot more if you'd put what type of RV you have in your signature file. This is just good practice on a forum so everyone can see what equipment you have when you bring up an issue. It's kin of hard to give advice when we don't know which RV you have.
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Old 06-03-2019, 05:37 PM   #19
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Itís a 2006 Mandalay.

The original AC interior grill looks like this:

Click image for larger version

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ID:	248405
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Old 06-03-2019, 05:47 PM   #20
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Hmm, I wonder if this is Apple to Oranges, but Waiter21 posted something a while back about the mod he did, although it was to improve air flow, not reduce the noise level.

Beat the heat Ė Improving air flow from the air conditioner ceiling unit Ė 2001 Coachmen Mirada 300QB

Here's the IRV2 thread about the air flow, which I guess could impact the noise level as well....enjoy:

http://www.irv2.com/forums/f84/anyon...ow-445638.html
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Old 06-03-2019, 07:16 PM   #21
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Just installed it on a Dometic 15K. Yes, it's quieter, a LOT, and I love that, as I really hated the noise.

That said, we also did use the dump mode on occasion, especially when it is 95ļ outside and we're exposed to the sun 100% and the two AC's were working full time to keep up... (No trees). Although increased, I am not sure the flow out of the ducting will be as effective. So, the original cover is under the bed and if we can't keep it cool this summer I can put it back on in 15 minutes.

That said, I have also ordered a Magneshade to cut down on the heat gain in the cockpit so I'm optimistic it will all be a wash and that we'll be able to keep it cool with reduced noise.

We'll see.
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Old 06-04-2019, 05:41 AM   #22
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Quote:
Originally Posted by A Traveler View Post
Itís a 2006 Mandalay.

The original AC interior grill looks like this:

Attachment 248405
Yes, that is the Dometic Unit same as ours. They also make a cover for the Coleman Units. Ours fit like a glove and even looks better. sleeker and more modern. I can get a pick later this morning if anyone is interested.

I am not sure you could easily swap them out since the tape would have to be reinstalled to cover the hole. I guess we could carry some extra foil tape to recover the hole.

Overall though I think it was a worthwhile upgrade for noise reduction.
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Old 06-04-2019, 06:22 AM   #23
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Has anyone tried this on a Coleman Mach without the direct vents? My Minnie Winnie is ducted only. It's noisier than I'd like, but I have no idea how much of the noise is due to the grate itself. It looks like this.

https://www.google.com/url?sa=i&sour...59737242026989

Edit--

I've looked at these things before, and never pulled the trigger. Wacko claims it's still quieter, but it looks like it has way less flow area than what I already have, so that doesn't make sense.
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Old 06-04-2019, 06:48 PM   #24
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In my emails to them, they claimed the airflow is the same or better with the cover. Their filter seems to be a better design for air flow in my opinion.
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Old 06-04-2019, 10:30 PM   #25
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Quote:
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In my emails to them, they claimed the airflow is the same or better with the cover. Their filter seems to be a better design for air flow in my opinion.
A claim they can't make. All depends on the efficiency of your ducting. If it's restrictive the flow WILL be less versus dump.
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Old 06-05-2019, 02:27 PM   #26
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Quote:
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In my emails to them, they claimed the airflow is the same or better with the cover. Their filter seems to be a better design for air flow in my opinion.
The same or better than what? Sorry, I couldn't tell who you were responding to, but I'm hoping it was me. Mine is a Coleman Mach 15 ducted. I haven't pulled the intake grate, but the stock grate itself looks to be very high-flow.
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Old 06-09-2019, 03:00 PM   #27
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Quieter intake would certainly be nice, but I wouldn't be willing to give up the direct vent feature. If you need to quickly cool a hot coach, the direct vent is the way to go!

X2...
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Old 06-09-2019, 03:02 PM   #28
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I too have installed one on my front a/c. Couldn't be happier. As to cost, there is an outfit in Ormond Beach that builds custom models for around $300.00. Waco works great and price is good as well.
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