Replacement AC Unit for a Coleman-Mach 48204C869 15,000 Btu AC Unit
Updated 06/29/2026 | Published 06/23/2026
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Question:
I have a coleman ac mn = 48204c869. What is the diect coleman replacement. Thanks for your time.
asked by: john m
Expert Reply:
Welcome back John. To replace your Coleman-Mach 48204C869 AC unit, I recommend the 18,000 Btu Mach-C Everest Variable Speed RV Air Conditioner System item # CM35MR in white or item # CM55MR in black.
These are complete AC systems that include an 18k variable speed air conditioning unit, an air distribution box that works in both ducted and ductless orientations, and a thermostat that will control an existing furnace.
Your Coleman-Mach 48204C869 series air conditioner has the now obsolete 410a refrigerant in it. The EPA changed the regulations on the refrigerant in the AC units at the beginning of 2025. They've been upgraded to R32 and none of the 410a components are compatible now with the newer systems.
Is your RV's AC system have a ducted or ductless system?
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Howard
6/29/2026
Replace my front Coleman, 135 and my 155 in the rear with the new furion units been on for 4 months, and they are working fine, easy to do.
Jerred H.
6/29/2026
Product Page this Question was Asked From
Mach-C Everest Variable Speed RV Air Conditioner System - 18K Btu - Ducted/Non-Ducted - R32 - Black
- RV Air Conditioners
- Complete AC System
- Cool Only
- 18000 Btu
- Standard Height
- Single Zone
- Rooftop
- Ducted
- Non-Ducted
- Black
- Coleman-Mach
more information >
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Tom
6/29/2026
The swap was very easy the wiring adapter was a perfect fit . I didn't need bolt adapters new unit fit with existing bolts. Was never happy with Coleman could not keep up with AZ heat. My RV is a 2019 24 foot freedom Elete The furrion cools much faster. the real test will be in AZ in Sept But so far very happy . dealing with etrailer was a pleasure as always, unit delivered on time.