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Old 02-20-2018, 08:57 AM   #1
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2nd AC Brand. 29.5 bhds

I plan to install a second AC in the bedroom. I have taken down the trim for the vent and found that the wiring and Ducting ( The unit has second AC prep). From other threads, I understand that the Mach 15 is also used for the upfront AC unit. Is there any reason to stay with the Mach 15 or should I consider a different brand of AC. I installed and Atwood in my other trailer in really liked it.
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Old 02-20-2018, 09:03 AM   #2
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Be sure to realize the extra height the bedroom AC will add. I had the factory install a low profile unit to keep the height down. The low profile unit was about half the height of the standard unit. It's a Mach 8 15k.


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Old 03-21-2018, 12:52 PM   #3
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I'm looking to do this exact same thing this spring. Did you already order parts and install? I'm having trouble getting confirmation on part numbers I need to order. Looks like just the A/C and the Ceiling Assembly are the two parts. I reached out to a local Camping World that sells Jayco, and they looked up the following parts (the notes are direct wording from the parts list they emailed me):

0216537 - 15k
0298019 - Grill/No Divider #8430A-6332
0230770 - tstat/coolonly
0186476 - Duct divider
0152070 - wire

I believe all the part numbers are Jayco part #s, except the #8430A6332 which if you leave off the last 2 looks like a ceiling assembly. No indication if the "15k" is the low profile or not, but I suspect not. I can't find where I can cross reference Jayco #s to manufacture. I also reached out to Airxcel to see if they could help out.

Anyone have experiencing ordering the proper parts for this project?
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Old 03-21-2018, 01:16 PM   #4
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Those are probably CW's catalog numbers not JAYCO's.
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Old 03-21-2018, 01:46 PM   #5
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Possibly; I searched CW's website with the number and didn't get matches. Maybe something internal? They look alot like the numbers found here: Jayco RV parts catalog & sales. Either way, finding correct parts has been alot of fun.
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Old 03-21-2018, 05:01 PM   #6
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Quote:
Originally Posted by Erren View Post
I'm looking to do this exact same thing this spring. Did you already order parts and install? I'm having trouble getting confirmation on part numbers I need to order. Looks like just the A/C and the Ceiling Assembly are the two parts. I reached out to a local Camping World that sells Jayco, and they looked up the following parts (the notes are direct wording from the parts list they emailed me):

0216537 - 15k
0298019 - Grill/No Divider #8430A-6332
0230770 - tstat/coolonly
0186476 - Duct divider
0152070 - wire

I believe all the part numbers are Jayco part #s, except the #8430A6332 which if you leave off the last 2 looks like a ceiling assembly. No indication if the "15k" is the low profile or not, but I suspect not. I can't find where I can cross reference Jayco #s to manufacture. I also reached out to Airxcel to see if they could help out.

Anyone have experiencing ordering the proper parts for this project?
I did not buy a unit yet, and i can't validate those numbers, but that looks like everything you would need. You shouldn't need the wire, as the thermostat wiring is already in the ceiling/wall. Depending on where you order from, you may end up ordering the top unit, thermostat, and the interior ducted assembly, which would come with the divider. What's interesting is that Coleman doesn't make it easy to figure out exactly what you need to make it work and they have quite a few different configurations of topside and interior components.
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Old 03-21-2018, 07:10 PM   #7
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I hear ya. I suspect it's difficult to find parts because they want us going through dealer networks to get the parts; and pay the 20% markup. I have emails out to Airxcel, Jayco, my dealer, a RV parts site. Hoping one of them will come back with the proper parts. I'll post what I find.
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Old 03-21-2018, 08:07 PM   #8
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We have the 2- 15k Airexcel units.

I like having both the same. The front unit is the high point on the rig but it only is about 4 inches higher than the low profile unit.
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Old 04-09-2018, 07:39 PM   #9
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UPDATE

I bought and installed a ducted Air Command 15k unit. I went this route because I think there’s more value in this unit than a comparable Mach unit. Install was not easy but it was a success, at least as far as I can tell so far.

Some thoughts:

- cools better than the factory installed Mach 15
- my rig had AC prep
- the 14” x 14” opening in the bedroom was slightly smaller than that and needed trimming to make it work
- the mounting bolts that come with the unit are too short metric bolts that are long enough are not readily available. I had to fabricated longer bolts
- I had to modify the provided plenum divider to make it taller using foam board from HD
- I used foam board and HVAC tape to seal things up
- I used the pre-run thermostat cable to pull through the Air Command specific cable
- I mounted the thermostat in the factory location above the light switch, but the thermostat’s display is a bit bright at night; I should have mounted it on the wall next to the bedroom door


Not a job for the faint of heart but doable if you have the right tools. A Mach 15 install may have been easier if the longer bolts and divider are readily available. I had two issues with doing a Mach setup. First, it wasn’t clear what part numbers were needed and what those actually included. Second was the price.
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Old 04-09-2018, 08:10 PM   #10
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Does Jayco install a larger generator when a 2nd AC is added at the factory?
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