Replacement Air Conditioner for a Coleman-Mach 48254C869 on a 2020 Grand Design Reflection

Question

Question:

Hello. I just wanted to get some confirmation on this unit. I have a 2020 Grand Design Reflection fifth wheel 28 BH. It has a Coleman-Mach model number 48254c869. Is the Advent Air ACCOL150B a direct replacement? Thank you for your help.

asked by: Carl

0

Expert Reply:

Hey Carl, thanks for reaching out!

Yes, the Advent Air Replacement RV Air Conditioner for Coleman Setup # ACCOL150B will work as a replacement for your Coleman-Mach 48254C869 air conditioner.

Are you planning on installing this yourself, or are you wanting to have a shop install it for you?

expert reply by: Jon G

0

Jon G.

9/29/2025

Hey Carl, did you decide to install the Advent Air replacement yourself, or did you have a shop do it for you? I'm curious to know how it went, as it could help others considering a similar upgrade.

Carl

9/29/2025

@JonG turns out I didn't need a new unit.

Jon G.

9/30/2025

@Carl Glad to hear you're back up and running! What ended up being the problem with your old unit?

Answer 1

To replace your Coleman Mach 15 48254C869 AC unit I recommend the Advent Air Replacement RV Air Conditioner for Coleman Setup #ACCOL150B which comes with an adapter harness that makes this a plug-and-play installation instead of having to splice…

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Answer 2

Thanks for the picture TJ! Nice set up. Sorry, but the new Furrion Chill Cube item #LC54DX is only compatible with other Furrion Cube components. This is because of the new EPA regulations with the R32 refrigerant. You would need to purchase the…

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Answer 3

Powered trailer jacks allow use of a manual crank for emergency purposes (like a power loss) and some can be used with a drill attachment and a cordless drill. But an impact wrench puts too much stress into the mechanism and this type of tool should…

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Answer 4

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 5

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 6

Hey Tim welcome back! Your ARH15AACBL2 GE AC unit has the old 410a refrigerant in it so the GE Appliances item #GE64FR you were looking at isn't going to work as a replacement. The EPA mandated R32 refrigerant has been used in all new AC's…

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Answer 7

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 8

Hi Kevin, yes the WackO Products Silencer for Coleman Mach and Airxcel RV Air Conditioners Part #WO34FR will fit your Coleman Mach 3 PowerSaver as long as your unit is a ducted setup, and a really quick way to confirm that is by comparing your…

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Answer 9

THey Brian, the Coleman Mach Signature Mach 15 part #CM32RR is a really solid AC unit. As far as how it compares to the Furrion Chill Cube #FR69TD it only has the advantage of working more consistently with furnace controls. Aside from that the Chill…

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Answer 10

Hi Collin, welcome back! The most economical replacement is going to be from Advent Air. You will need a complete system since everything moved to R32 refrigerant. If your upgraded thermostat is R32 compatible, or a smart thermostat that got a…

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Answer 11

Hey Keith! I can definitely help you find a replacement for your Dometic Duo Therm. However, you're going to have to replace the thermostat and air distribution box as well. Your current setup is for R410A and everything switched to R32 last year…

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Answer 12

Hey Matthew, thanks for reaching out. We do have a heat strip kit that will work with the Advent Air RV Air Conditioner System #ADV99QR. For that you'll need the following: - Electric Heat Strip for Advent Air RV Air Conditioners - 5,500 BTU -…

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Replacement Air Conditioner for a Coleman-Mach 48254C869 on a 2020 Grand Design Reflection

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