Replacement AC With 18,000 Btu for Coleman Mach on 2017 Keystone Outback
Updated 10/30/2025 | Published 02/01/2025
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Question:
I have a 2017 keystone outback with a 48204c866 ac. I would like yo upgrade to a 18000 btu ac. What model would it be for a plug and play.
asked by: Charles
Expert Reply:
Hey Charles! The only plug and play options we have right now are 15,000 Btu like the Advent Air Replacement RV Air Conditioner for Coleman Setup # ACCOL150 you looked at. If you're happy with the Furrion you got before then the # FR42PV will also work.
Alternatively, you could install the new Furrion Chill Cube RV Air Conditioner. It looks like that version of the Coleman Mach is for a ductless setup so you would need the # FR59TD (white) or # FR27TD (black). This will require replacing the air distribution box but I think it is worth it for the great new features.
The Chill Cube has the 18,000 Btu you're looking for. It also has a variable speed motor and low-energy modes for efficient cooling and reduced the power draw. The motor runs continuously so that will be less wear and tear on the unit since it won't cycle on and off. On top of that, it has a wireless remote which also acts as the thermostat.
Edit: Since you came back and said you have a ducted setup you will need one of the following if you switch to the Chill Cube:
-Furrion Chill Cube RV Air Conditioner w Air Distribution Box - Black # FR39TD
-Furrion Chill Cube RV Air Conditioner w Air Distribution Box - White # FR99TD
-Furrion Chill Cube RV AC w/ Air Distribution Box, Thermostat - Black # FR49TD
-Furrion Chill Cube RV AC w/ Air Distribution Box, Thermostat - White # FR69TD
If you just need to run the AC then the first two are the correct choice. If you have a furnace and you want it to all work together you will need the models that come with a regular wall thermostat (they still have the remote too) to operate the furnace.
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Robin H.
10/30/2025
Hey Charles, how did things go with the Furrion Chill Cube upgrade for your Keystone Outback? I'm curious if the new 18,000 Btu unit gave you the cooling boost you were after. Your update could make it easier for others planning a similar swap.