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Replacement AC Unit for Coleman Mach 48254c86  

Updated 09/29/2025 | Published 05/07/2025

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Question:

I’m looking for a replacement unit for my Coleman mach model 48254c86 serial number 150721335 want to replace it with an advent air or a furrion.

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Expert Reply:

Hey Mark! We have run into a lot of compatibility issues lately so we are no longer recommending the Advent Air Replacement RV Air Conditioner for Coleman Setup # ACCOL150B as a replacement. Even though the pins will line up with the 9-pin adapter we find that more often than not a complete replacement is necessary. To avoid finding out you need a new air distribution box (ADB) and thermostat while you're in the middle of the installation we recommend getting a full system.

Also, AC companies are all switching to units with the new R32 refrigerant so they meet 2025 EPA regulations. These systems are not backwards compatible, even within brands, since the ADB and thermostat require different settings. This also means parts will become unavailable (we're already seeing this) for the old R410a units.

It is for that reason that I recommend a complete replacement with a new R32 unit. If you want to go with Advent Air we have the manual ADB that works with ductless or the model with the thermostat that works with ductless and ducted setups. You can choose from the following:

-Advent Air RV AC System - Manual - 15,000 Btu - White - R32 # ADV32SR or # ADV42SR (Black)

-Advent Air RV AC System - Manual - 13,500 Btu - White - R32 # ADV23SR or # ADV75SR (Black)

-Advent Air RV AC System - Single Zone - 15,000 Btu - White - R32 # ADV92SR or # ADV62SR (Black)

-Advent Air RV AC System - Single Zone - 13,500 Btu - White - R32 # ADV95SR or # ADV52SR (Black)

-Advent Air RV Air Conditioner System - Single Zone - 13,500 Btu - White - R32 # ADV87QR

-Advent Air RV Air Conditioner System - Single Zone - 15,500 Btu - White - R32 # ADV99QR

If you want a Furrion unit I recommend taking a look at the new Chill Cube. This is really popular right now and for good reason. The Chill Cube is incredibly efficient and unbelievably quiet. This is all thanks to the variable speed compressor. It does have an 18,000 Btu capacity, which seems really high, but the compressor stays on so you won't run it out with constant cycling. It also has a remote which acts as the thermostat in addition to controls on the ADB. If you decide to go with the Chill Cube you can choose from the following based on ducted/ductless, color, and if you have a furnace:

-Furrion Chill Cube RV Air Conditioner w Air Distribution Box - Ductless - 18,000 Btu - Black # FR27TD

-Furrion Chill Cube RV Air Conditioner w Air Distribution Box - Ductless - 18,000 Btu - White # FR59TD

-Furrion Chill Cube RV Air Conditioner w Air Distribution Box - Ducted - 18,000 Btu - Black # FR39TD

-Furrion Chill Cube RV Air Conditioner w Air Distribution Box - Ducted - 18,000 Btu - White # FR99TD

-Furrion Chill Cube RV AC w/ Air Distribution Box, Thermostat - Ducted # FR69TD

-Furrion Chill Cube RV AC w/ Air Distribution Box, Thermostat - Ducted # FR49TD

expert reply by:
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Robin H
Furrion Chill Cube
Furrion Chill Cube
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Robin H. profile picture
Etrailer Expert

Robin H.

9/29/2025

Hey Mark, did you decide to go with a complete replacement for your air conditioner? I'm curious to know how it worked out for you, as your experience could be really helpful for others facing similar decisions.


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