Best 15K BTU Replacement For Coleman Mach 48253C969

Updated 06/24/2026 | Published 02/24/2025

Question:

Hi, sorry to ask but I have a 2017 Class C RV with a 13,5 K Coleman mach Ac standard cheaper knob style system, non ducted model 48253C969. I’m looking to upgrade to a 15k same brand to keep it simple if possible for plug and play. I’ve been looking on your website to locate something that would work but I don’t see any Coleman Mach series. I don’t want to change out the inside due to cost if possible. Any suggestions I would appreciate it! Adding heat strips would be fine as well. Thank you. Oh forgot to add, the reason for the upgrade is because my AC has passed on to a better life lol.

asked by: Kris W

Expert Reply:

Hey thanks for reaching out, Kris, and RIP to your Coleman AC unit. Gone too soon lol.

To help you thru the grieving process, I am happy to tell you that we do offer a 15K BTU AC unit that can replace your Coleman Mach 48253C969. What you can use for that is the Advent Air Replacement RV Air Conditioner for Coleman Setup # ACCOL150. This comes with the AC unit, and the conversion kit that makes it compatible with your Coleman AC system. This way you can swap out the rooftop portion only, and your vents and thermostat can stay in place and will work exactly the same, only with colder air. This unit also includes a start capacitor to lower the startup amperage.

Feel free to reply below and let me know if there is anything else I can do to help.

expert reply by: Jesse M

ACCOL150 Included Parts
(click to enlarge)

Andrew

5/22/2025

I am looking for this same Advent Air Replacement RV Air Conditioner for Coleman Setup # ACCOL150. Please let me know if it is still available.

Jesse M.

5/23/2025

@Andrew Sadly that part has been phased out and is no longer available. You can still install an Advent unit on your camper, but it would require replacing the AC, distribution box, controller, and thermostat. This is the only way to ensure everything works together correctly. For that you can use the following: - Advent Air RV Air Conditioner System - Single Zone - 15,000 Btu - White - R32 # ADV92SR

Kyle

6/23/2026

I am also in the same boat with a coleman 48253c969. Is there a link for just the top replacement in a 15K btu top?

Jesse M.

6/24/2026

@Kyle Unfortunately, no, there isn't. That Coleman replacement I mentioned above is an older part number that has been discontinued. Main reason for that is in 2025 all RV AC units started using a new R32 refrigerant type. These new R32 units are not backwards compatible with AC systems made before 2025. So, it is possible to replace your Coleman unit, but you will need to replace the entire AC system - rooftop unit, controller, distribution box and thermostat. For that I recommend the Advent Air RV Air Conditioner System # ADV92SR. It's a complete AC system so you get everything you need. It will work with both ducted and non-ducted setups.

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