Replacement AC System for a Dometic Brisk II 9105304474
Updated 05/29/2026 | Published 05/24/2026
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Question:
My Dometic MFG B57915E711JOEMX SKU 9105304474 AC unit no longer works. Looking to upgrade from 13.5 BTU to 15k BTU. Is there a plug and play unit available?
asked by: Nicholas
(click to enlarge)
(click to enlarge)
Expert Reply:
Hey Nicholas, thanks for the pics and information. To replace your Dometic Brisk II 9105304474 AC, I recommend the Advent Air RV Air Conditioner System item # ADV99QR in white or item # ADV69QR in black for a ducted setup. The Advent Air RV Air Conditioner System item # ADV39QR in white or item # ADV49QR in black are what you will need for ductless.
There's no way to just replace your AC unit, you'll need to replace all your AC system components. This is due to the EPA changing the regulations on the refrigerant in the AC units at the beginning of 2025. They've been upgraded to R32 and your Dometic Duo-Therm has the now obsolete 410a refrigerant. None of the 410a components are compatible now with the newer systems. You will be able to use the existing wiring to power the AC system and connect the new thermostat if yours has one.
The Advent Air RV Air Conditioner System item # ADV99QR in white or item # ADV69QR in black are 15,500 btu systems that include an air distribution box that works in ducted setups. Also included is a thermostat that can use your existing wiring if your system has one.
The Advent Air RV Air Conditioner System item # ADV39QR in white or item # ADV49QR in black for ductless setups do not include a thermostat.
Does your current AC system have a thermostat and do you have air ducts in your trailer? I'm just trying to dial in the right system for you. We've got quite a few replacement options and I understand swapping out everything to replace an older AC unit wasn't what you had in mind.
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Product Page this Question was Asked From
Advent Air RV Air Conditioner System - 15,500 Btu - Single Zone - Ducted - White - R32
- RV Air Conditioners
- Complete AC System
- Cool Only
- 15500 Btu
- Standard Height
- Single Zone
- Rooftop
- Ducted
- White
- Advent Air
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Nicholas
5/29/2026
My current system has both ducting and a thermostat. What other items will I need for this replacement?