Replacement AC Unit for a Coleman Mach 8

Question

Question:

Hi, Im looking for a replacement rear rooftop ac unit for my 2019 Nexus Ghost 34 Ds. It has a Coleman mach 8, model 47203B879 on it now. Its 9 1/2 tall and Ive made it so it uses the ceiling ducts. Im looking for easy start and super quiet. What would you recommend for a replacement? Its on a thermostat all by itself. Thanks

asked by: Randy K

0

Expert Reply:

Thanks for the information Randy. To replace your Coleman Mach 8, you'll want the Furrion Chill HE Replacement RV Air Conditioner for Coleman Setup item # FR62PV in black or item # FR82PV in white. This includes an adapter wiring kit that enables the AC to work with your existing Coleman setup. It will be a complete plug and play installation. It has a built in start capacitor and the dual motors make it super quiet.

Are you interested in upgrading to a 15,000 btu unit? We also have the Furrion Chill HE Replacement RV Air Conditioner for Coleman Setup item # FR32PV, which has the same plug in adapter.

expert reply by: Jerred H

0

Randy S.

8/26/2025

Yes, I would be interested, would it work with the added draw for amperage with the current wiring & breaker?

Jerred H.

8/26/2025

@RandyS Not sure what size breaker or wire you're currently running but you'll need a 20 amp breaker with 12 gauge wire to run the 15,000 btu item # FR32PV.

Randy

8/26/2025

Also I see that it is 13.5 " tall , mine is 9.5" , I'm not sure I want the extra height, since we are already at 13'

Jerred H.

8/26/2025

@Randy You would need to replace the entire system then, not just the rooftop ac unit. All of the newer replacement options for the Coleman Mach 8 have the R32 coolant in them. The individual components are not backwards compatible with anything made prior to 2025.

Randy S.

8/26/2025

I'm not sure what you mean, I am looking to replace the rooftop unit, that is the whole thing to me, what else is there? Is there a lower profile model?

Jerred H.

8/26/2025

@RandyS That's not the whole thing, item # FR62PV is only the rooftop AC unit. Replacing the entire system would mean installing a setup like the Advent Air Low Profile RV Air Conditioner System item # ADV82SR, which includes an AC unit, air box, thermostat, and start capacitor.

Randy S.

8/26/2025

OK, I think I get it, if it fits the hole in the roof, the air box should fit, what about the thermostat, would I have to pull new wires? Is that possible? What about a model like Furrion FR 49AD its lower height is closer to my original height. Thanks for your patience.

Jerred H.

8/26/2025

@RandyS The Furrion Chill HE Low-Profile Replacement RV Roof Air Conditioner Unit item # FR49AD is just the AC unit. In order to install this AC in place of your Coleman Mach 8, you would need the Furrion Chill HE Low-Profile RV AC System w/ Heat Pump item # FR76AD. This comes with a new AC unit, air distribution box, and thermostat. You can use your existing wiring but everything else related to the Coleman Mach 8 you're replacing will need to go.

Randy

8/26/2025

Thanks for the help!

Jerred H.

8/26/2025

@Randy You're welcome!

See All (5) Replies to Randy S. ∨

Answer 1

As you have a Coleman Mach system currently you can use the Furrion Chill AC units from the list below. These will simply replace only the rooftop units and the controls and thermostats you currently have in place with control the new AC's. 13.5K…

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Answer 2

Good afternoon Kirt, the Furrion Chill HE Low-Profile RV AC units are going to be very similar to the standard size HE units in regards to sound level and efficiency (amp draw). The only advantage to the Low-Profile units is, well, the lower profile…

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Answer 3

Hey Andrew! Yes, Furrion does have a Chill Cube model with a heat pump. This was actually just released for aftermarket sale. You will need a complete system to make the switch, new R32 units aren't backwards compatible with old R410A systems.…

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Answer 4

Hey Melanie. The reason you can't find a replacement for your GE ARC15AACBL2 15,000 btu air conditioner is because they phased them out. In 2025 all RV AC systems had to change over to a new coolant called R32. This was a EPA mandated decision.…

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Answer 5

Hey David, it sounds like you know what you're doing but I've also gone ahead and found the wiring diagram for the Replacement Single Zone Thermostat for Dometic RV Air Conditioners #DMC79FR for you to check out so you can use it as a cross…

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Answer 6

Hey Lars, welcome back! I can indeed confirm that the Furrion Variable Speed Chill Cube air conditioner with a heat pump is indeed really happening. They are currently available for order (02/04/26) and will be shipped out towards the middle of next…

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Answer 7

Hey W.F., welcome back! The Advent Air RV AC #ADV23SR you were looking at is a non-ducted setup with the controls on the air distribution box (ADB). It does not come with or require a wall thermostat. The controls are built into the ADB itself using…

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Answer 8

Hey Bryan, thanks for reaching out. You can upgrade the AC unit, but it will mean replacing your entire AC system - rooftop unit and controls/distribution box. Reason being the new Coleman units use a different refrigerant than the old units, and the…

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Answer 9

Hey David, thanks for reaching out. Unfortunately, there isn't an adapter that will allow the Advent Air AC #ADV84QR to communicate with a Coleman-Mach distribution box. Since your Advent unit uses a different connector and control system,…

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Answer 10

Hi Nathaniel, Great choice on switching to the Furrion Chill 18,000 BTU! You're going to love the performance and efficiency it brings. One of the biggest advantages of the switch is that Furrion has upgraded their refrigerant from R410A to the…

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Replacement AC Unit for a Coleman Mach 8

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