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Old 07-17-2017, 12:51 PM   #21
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Originally Posted by SuperD View Post
Great job!!!
Thanks Super and rlcpe
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Old 07-17-2017, 05:06 PM   #22
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AC Vent on Amazon P/N??

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Originally Posted by SuperD View Post
This is a common problem, low flow thru the ceiling vents. Here is a picture of a simple mod to increase your airflow, the vent is available on Amazon.

Attachment 5777

What is the P/N or what do you call it??
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Old 07-17-2017, 05:18 PM   #23
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AC Vent Fix

What is the P/N or name of the AC vent fix on Amazon???

I put Reflectix insulation inside all the windows (including the cab windows), outside compartment door and also inside the compartments. Also in the bathroom skylight and the 4 ceiling vents.
Going to move it out in the Arizona sun to see how it works.
Next step is to get a 15K BTU A.C. ($9xx.xx)
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Old 07-17-2017, 05:51 PM   #24
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Here is a link to the white rotating vent from Amazon:

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
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Old 07-17-2017, 06:00 PM   #25
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Just finnished mine!
Thank you SuperD for posting. I nominate this for the MOD Hall of Fame!! Click image for larger version

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ID:	5893 took half hr. I DID CUT WITH RotoZip.
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Old 07-17-2017, 06:47 PM   #26
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I think I'm gonna steal your idea. I already have the Bedroom AC wired to that area and adding the fuse will allow me to select which AC to utilize when on Generator.
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Old 07-17-2017, 08:30 PM   #27
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Originally Posted by revjeffrey View Post
Just finnished mine!
Thank you SuperD for posting. I nominate this for the MOD Hall of Fame!! Attachment 5892Attachment 5893 took half hr. I DID CUT WITH RotoZip.
Glad that worked out for you! I can't take credit for this it was someone else's idea, I just copied it and passed it on.
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Old 07-17-2017, 08:58 PM   #28
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I do have to say that I was skeptical about putting a vent on the ceiling AC cover would do anything, so I tried an informal experiment. The AC could not cool our Axis down on our last trip after a day on the road with only the cab AC working. So, I've been trying to fix that issue ever since I got home.

Last week, I did a test to see if my improvements up to that point would make any difference. In the middle of that test, I had the cover off while running the AC and noticed a considerable amount of air coming directly out of AC. I mean, blowing dust bunnies and paper around on the floor kind of air movement.

So, I just got back from running the AC without the cover to see if it cooled down the coach any faster.

So, both tests were started when the coach thermostat said it was 80 in the coach. With the cover on, after 35-40 minutes, the coach had cooled down to about 75. With the cover off, after the same 35-40 minutes, the coach had cooled down to 71.

I'd say that having the extra air flow made a huge difference.

A couple of caveats:
* When I ran the test with the cover on, it was about 86 outside air temperature. Today, for the cover off test, it was only 80. Other than the air temperature, everything else was the same (same time of day, same amount of shade, etc.)
* When I ran the cover off test, I wasn't using a fan to circulate the air in the coach. I relied on the AC to do that. It might have been even faster cool down if I had a small fan to circulate the air between the main part of the coach and the bedroom with the thermostat.

I'm going to order one of the vents and install it in the cover. The real test will be when we get back to Kansas or Colorado on the trip back out to Utah in August. It seems impossible to find shade in Kansas or Colorado where we need to stop for the day!
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Old 07-17-2017, 11:27 PM   #29
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When we were in Galveston recently it was 95+ and the motorhome was parked in full sun with no shade. I set the AC to 70 degrees and the thermostat kicked off the AC frequently. Last year we were in Indiana, same conditions but without the vents in the cover, the AC never kicked off. Not a scientific test but I'm convinced of the benefit of having the vents installed, plus the mod was inexpensive and easy to do. Your results may vary!!!
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Old 07-17-2017, 11:39 PM   #30
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Extra AC Vent

Thanks Super D. I just ordered the vent from Amazon. Will let you know how it works out here in HOT AZ.
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Old 07-17-2017, 11:43 PM   #31
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Originally Posted by sluiceman2 View Post
Thanks Super D. I just ordered the vent from Amazon. Will let you know how it works out here in HOT AZ.
You are most certainly welcome and I hope it works well for you!!!
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Old 07-19-2017, 08:45 PM   #32
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So, both tests were started when the coach thermostat said it was 80 in the coach. With the cover on, after 35-40 minutes, the coach had cooled down to about 75. With the cover off, after the same 35-40 minutes, the coach had cooled down to 71.
Well, I got the vent yesterday (got to love Amazon Prime ) and installed it this morning.

I reran my test. The coach started off at 86 (due to the external temperature being 91). After 35-40 minutes, the coach had cooled off to 78.

I did notice that the front of the coach was cooler than the bedroom.
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Old 07-19-2017, 09:13 PM   #33
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How did you power the second AC?
I ran the wiring through the same channel the vent fan had been run. I then ran it through the cabinetry and out through the back storage area. I used 25' of 10 guage Romax and connected to a 25' cord.
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Old 07-21-2017, 05:22 PM   #34
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Many thanks SuperD for the mod you posted. Just received mine yesterday and installation was easy. Should be more cool air where we need it in cooking area.
Below is the link where I found this one for $8.75 delivered on Ebay.

RV Round AC Ceiling Vent Fully Adjustable Spaceport 6 1/2" Diameter Camper


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Old 07-21-2017, 07:06 PM   #35
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Originally Posted by mcr1010 View Post
Many thanks SuperD for the mod you posted. Just received mine yesterday and installation was easy. Should be more cool air where we need it in cooking area.
Below is the link where I found this one for $8.75 delivered on Ebay.

RV Round AC Ceiling Vent Fully Adjustable Spaceport 6 1/2" Diameter Camper


Attachment 5991 Attachment 5992
My pleasure, hope it works well for you!
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Old 07-23-2017, 05:52 PM   #36
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Originally Posted by SuperD View Post
Here is a link to the white rotating vent from Amazon:

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Just a question, how does the addition of the vent effect the use of the ceiling ducts through out the coach?
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Old 07-23-2017, 06:03 PM   #37
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The vent gives maximum cooling Air from the AC. The other roof vents
channel the flow throughout the RV, but the volume is decreased.
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Old 07-23-2017, 06:14 PM   #38
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It reduces the amount of air from the overhead ducts a lot when you open the added vent. The big plus is that it cools the living-cooking area down quicker. Although, if you need more ac in the back area, you can close the ac off on the grill vents and it diverts the AC thru the ducts very well.
I wish the blower had a lower more quieter speed for night time sleeping.
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Old 09-14-2017, 03:32 AM   #39
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SuperD, I took your lead on this...what a difference it made! I also installed a second 13.5k A/C in place of the bedroom vent. It took no time at all and the entire installation cost less than $650.
I have a 2016 Axis 25.2 and would like to add another unit like you did. Where did you get the 110 circuit to do it with and you dont trip the 30 amp breaker doing that?
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Old 09-14-2017, 01:28 PM   #40
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THOR #3952
Quote:
Originally Posted by mcr1010 View Post
Many thanks SuperD for the mod you posted. Just received mine yesterday and installation was easy. Should be more cool air where we need it in cooking area.
Below is the link where I found this one for $8.75 delivered on Ebay.

RV Round AC Ceiling Vent Fully Adjustable Spaceport 6 1/2" Diameter Camper


Attachment 5991 Attachment 5992
I'm just curious as to why you added the round vent when your cover has the sliding vents to allow cool air to be diverted down.
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