Replacement Air Conditioner for a Dometic Duo Therm 600315.331

Updated 09/05/2025 | Published 08/31/2025

Products Featured in This Question

Furrion Chill HE Replacement RV Air Conditioner Unit for Furrion Setup - 13,500 Btu - White

(75)

$810.02

Furrion Chill HE RV Air Conditioner System w/ ADB with Knobs - 13,500 Btu - Ducted/Non-Ducted - R32

(78)

$1105.59

Question:

Will this Furion FR26PR replace my duo therm 600315.331 13.5k BTU?

asked by: Phil H

Expert Reply:

Yes, it will Phil. However, you'll also need to replace your air distribution box. The Furrion Chill HE Replacement RV Air Conditioner Unit for Furrion Setup item # FR26PR is just the AC unit that sits on the roof. It's not going to work with your Duo Therm's air box, which has the controls.

I recommend getting the Furrion Chill HE RV Air Conditioner System - Manual - 13,500 Btu item # FR95TD. This is a complete ac system that has everything you need to replace your Dometic. It also has the new R32 refrigerant which is more efficient and what all the new systems are going to. It's better to make this change now because none of the systems or components made before 2025 are compatible with the R32 systems.

Does your Duo Therm system have a thermostat or heat?

expert reply by: Jerred H

Phil H.

9/5/2025

Hi Jerred, My current system uses an analog Duo Therm (Dometic?) thermostat mounted to the wall. Id does not have heat. I am not looking to replace that if it is compatible.

Jerred H.

9/5/2025

@PhilH Nothing from your current system is going to be compatible including the thermostat. You can reuse the wiring but if you want to retain the use of a thermostat and not rely on the air box controls you'll need the Furrion Chill HE RV Air Conditioner System -item # FR35TD, which comes with its own thermostat.

Phil H.

9/5/2025

@JerredH Hi Jerred, Do you have any 13.5 units that are a simple swap out with the existing unit without having to replace everything else?

Jerred H.

9/5/2025

@PhilH No, there isn't. The old Advents won't work to replace Duo Therms anymore and everything else is going to the R32 like item # FR35TD due to the 2025 EPA regulations. This is why the recommendation is to upgrade to all new components because replacement parts are going to run out on anything made before 2025.