Best Replacement AC for a Dometic Brisk II
Updated 09/20/2025 | Published 09/14/2025
Products Featured in This Question
Question:
I have a 2017 crossroads rezerve 34rl, the main unit went out months after buying rv new. Had it replaced and now it doesn’t cool like it should. It is a dometic brisket II 15k unit, it is ducted and runs off the thermostat. Looking for a direct replacement that will work with the system
asked by: Brice
Expert Reply:
Hey Brice, thanks for all of the information. I have a solution but I am sorry to say but there isn't going to be a direct fit replacement for your Dometic Brisk II. There's two reasons for that.
The first is in 2025 all RV AC systems had to change over to a new coolant called R32. This was a EPA mandated decision. Part of this upgrade means that nothing made with the R32 coolant in it, like item # ADV26SR you were looking at, fits any system made before 2025 that has the older R410A coolant. R32 is more efficient but none of the new components work with the prior systems like your 2017 CrossRoads Longhorn Rezerve has.
The second reason an Advent AC like item # ADV26SR isn't going to work is we found out about this time last year that those wiring harness are not actually compatible with other systems like Dometic. The connections can physically be made but the pin functions on the connectors stopped lining up. Additionally, mixing and matching brands voids all warranties.
So even though your AC system is only a few years old, in order to replace the AC unit you have to replace the entire system. This includes the AC unit, the air distribution box, and a thermostat.
To replace your 15,000 btu Dometic Brisk II air conditioning system, you'll want the Advent Air RV Air Conditioner System item # ADV62SR. This system comes with a 15,000 btu ac unit, an air box that works with both ducted setups, a start capacitor, and a thermostat.
Do you have a furnace tied into your Brisk II setup?
You can add this information and any other questions or concerns you have where it says Reply to Jerred H and I'll be happy to answer them.
(click to enlarge)
Product Page this Question was Asked From
Advent Air RV Air Conditioner - 15,000 Btu - Ducted or Non-Ducted - Black - R32 - AC Unit Only
- RV Air Conditioners
- AC Unit Only
- Cool Only
- 15000 Btu
- Standard Height
- Single Zone
- Rooftop
- Ducted
- Non-Ducted
- Black
- Advent Air
more information >
Continue Researching
- Shop: Advent Air RV Air Conditioner System - 13,500 Btu - Air Distribution Box Controls - Non-Ducted - R32
- Search Results: dometic freshjet 3
- Search Results: dometic freshjet
- Search Results: dometic
- Shop: Advent Air RV Air Conditioner - 15,500 Btu - Ducted or Non-Ducted - White - R32 - AC Unit Only
- Video: Review of Advent Air Air Distribution Box Wall Mounted Thermostat RV AC - ADV24QR
- Shop: Mach-C Everest Variable Speed RV Air Conditioner - 18K Btu - Ducted/Non-Ducted - R32 - AC Unit Only
- Shop: Advent Air RV Air Conditioner System - 15,500 Btu - Single Zone - Ducted - Black - R32
- Shop: Advent Air RV Air Conditioner System - 13,500 Btu - Single Zone - Ducted - Black - R32
- Shop: Dylux RV Air Conditioner w/ Air Distribution Box, Thermostat - Ductless - 15,000 Btu - Black - R32
- Shop: Advent Air RV Air Conditioner System - 15,500 Btu - Single Zone - Ducted - White - R32
- Video: Hands-On with the Coleman-Mach ChillGrill Air Distribution Box
- Video: Installing the Coleman-Mach RV Air Conditioner Soft Start Kit
- Video: Review of Coleman-Mach RV Air Conditioners - Signature Mach 3 Ducted Sys Polished Black - CM55RR
- Article: RV AC Not Cooling? What's Normal, What to Check, and When to Replace
- Search Results: spare tire mount
- Search Results: trailer tires and wheels
- Search Results: fr42pv
- Search Results: acm135
- Video: Furrion Chill HE Replacement RV Air Conditioner for Coleman Setup Spec Review
- Q&A: What Ac Unit Can Replace The Dometic Brisk II?
- Q&A: Recommended Replacement For Dometic Brisk Air Conditioner For RV
- Q&A: Recommended Replacement For a Dometic 641915c751c0 Rooftop RV Air Conditioner Unit
- Q&A: Is Furrion Chill FR42PV RV Air Conditioner a Good Replacement for a Dometic Brisk Unit
- Video: Replacement Dome Assembly for Ventline Ventadome Trailer Roof Vent Spec Review
- Video: An In-Depth Look at the Camco RV Vinyl Trim Insert
- Q&A: Recommended Replacement For A Dometic Brisk II Model # B59516
- Shop: Trailer Hitch
- Q&A: Does etrailer Carry Furrion Chill Cube w/ Heat Pump to Replace Dometic Duo-Therm
- Article: Trailer Wiring Diagrams
on RV Air Conditioners
Brice
9/20/2025
Yes I do have a furnace tied in.