Will Dometic Freshjet 3 Work with Duo Therm Air Box

Question

Question:

Will this unit work with an existing Duo-Therm control unit and thermostat? I see the main harness plug will plug into my current control unit.

asked by: Chris

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Expert Reply:

Hey Chris, what year was your Duo Therm made? If it was made after January 2025 it would use same refrigerant as the part # DMC94JF and would be compatible but if older you'd need a new air box as well with the part # DMC66RR. Do you know what year your Duo Therm was made by chance?

expert reply by: Jameson C

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Answer 1

Hey Bob. Great question I completely understand wanting to keep everything running from one wall control without creating extra wiring headaches and extra parts. At this time, there isn’t a control board available that will allow a single-zone…

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Answer 2

Hi Darrell; do you know what your AC model is? We do have the Dometic Air Distribution Box for RV Air Conditioners #DMC66RR. This is designed for non-ducted setups with a wall mounted thermostat. It is the only Dometic ADB we carry without manual…

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Answer 3

Hey Fraser, yes the Dometic thermostat part #DMC83ZR that you referenced is correct for you to use when adding the Dometic Freshjet 3 part #DMC49ZR. This thermostat had furnace controls as well.

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Answer 4

Hey Larry, the Dometic FreshJet 3 part #DMC69ZR that you referenced does not require an additional control board to work. Basically you just need to run the power wires to it and it' ready to go as the controls are internal and on bottom of the…

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Answer 5

Hey Andrew! Yes, Furrion does have a Chill Cube model with a heat pump. This was actually just released for aftermarket sale. You will need a complete system to make the switch, new R32 units aren't backwards compatible with old R410A systems.…

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Answer 6

Hey Melanie. The reason you can't find a replacement for your GE ARC15AACBL2 15,000 btu air conditioner is because they phased them out. In 2025 all RV AC systems had to change over to a new coolant called R32. This was a EPA mandated decision.…

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Answer 7

Hey Lars, welcome back! I can indeed confirm that the Furrion Variable Speed Chill Cube air conditioner with a heat pump is indeed really happening. They are currently available for order (02/04/26) and will be shipped out towards the middle of next…

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Answer 8

Hey David, it sounds like you know what you're doing but I've also gone ahead and found the wiring diagram for the Replacement Single Zone Thermostat for Dometic RV Air Conditioners #DMC79FR for you to check out so you can use it as a cross…

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Answer 9

Hi Nathaniel, Great choice on switching to the Furrion Chill 18,000 BTU! You're going to love the performance and efficiency it brings. One of the biggest advantages of the switch is that Furrion has upgraded their refrigerant from R410A to the…

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Answer 10

Hey Mike! The Advent Air RV Air Conditioner #ADV74QR is only designed to work with an R32 setup. Your old unit is going to be R410A, so the old components won't be compatible. Since everything moved to R32 last year due to EPA regulations a…

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Answer 11

Hi Collin, welcome back! The most economical replacement is going to be from Advent Air. You will need a complete system since everything moved to R32 refrigerant. If your upgraded thermostat is R32 compatible, or a smart thermostat that got a…

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Will Dometic Freshjet 3 Work with Duo Therm Air Box

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