Replacement AC for 2007 Monaco Knight Class A With Dometic Duo-Therm

Question

Question:

I have a 2007 Monaco Knight Class A motorhome with two Duo-Therm 13,500 BTU AC/Heat Pump units Model : 630035.831 with a Dometic Duo-Therm Thermostat. Can I replace the bedroom unit with a Furrion 15k BTU Unit and the main unit with the 18K Btu unit? Im not sure if its a 6 or 9 pin connection but I will find out.

asked by: Charles B

0

Expert Reply:

Hey Charles! All of the new AC systems moved to R32 in 2025 due to the new EPA regulations. The pin on the connector no longer matters when replacing old R410a units because you have to completely replace the system. It looks like that is a ducted setup so you can use the following based on color:

-Furrion Chill Cube RV Air Conditioner w Air Distribution Box - Ducted - 18,000 Btu - Black # FR39TD

-Furrion Chill Cube RV Air Conditioner w Air Distribution Box - Ducted - 18,000 Btu - White # FR99TD

-Furrion Chill HE RV AC System w/ Thermostat - 15K Btu - Ducted/Non-Ducted - Black - R32 # FR65TD

-Furrion Chill HE RV AC System w/ Thermostat - 15K Btu - Ducted/Non-Ducted - White - R32 # FR83TD

If you have a setup without air distribution boxes we do have some of the old Furrion # FR32PV left you could use with the existing setup. Otherwise, I would go with a new system with the ADB since parts are no longer available for these older systems.

Where are you headed with the Monaco once you get the AC replaced?

expert reply by: Robin H

0

Chill Cube ADB
(click to enlarge)

Charles B.

7/21/2026

Hey Robin, thank you for the information. So, the old ADB should be replaced with the new unit? Lastly, I will no longer use the Dometic wall mount thermostat because the new AC's have individual remotes? Heading to TN for a couple of weeks later this year!

Robin H.

7/21/2026

@CharlesB that is correct. All of those AC systems I listed out are a complete replacement. They include the rooftop unit and ADB which will replace what you have now. The Chill Cube has a remote which acts as the wall thermostat, the regular Chill HE has a wall thermostat. They use different communication protocols so you will replace the Dometic thermostats. If you're running a furnace and its tied to the thermostat where you will install the Chill Cube, keep the old Dometic thermostat running the furnace. They make a Chill Cube wall thermostat but it has a lot of furnace compatibility issues so keeping them separate, and running the Chill Cube off of the remote, typically works out best.

Answer 1

To replace your Dometic Duo-Therm 13,500 BTU rooftop unit I recommend the Furrion Chill Replacement RV Air Conditioner 15,000 Btu - White #FR42PV. This unit comes with an adapter cable which will allow you to plug right in to your existing air…

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Answer 2

Hello Mike, thanks for reaching out. We do have a solution for replacing your Duo-Therm unit, but we do not offer a direct replacement for this. The best option for a replacement will be to replace the entire AC system. The reason for this is new RV…

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Answer 3

Hey Phillip, thanks for reaching out! Yes, the Furrion Chill HE Replacement RV Air Conditioner for Coleman Setup #FR42PV can be installed in place of your Dometic Duo-Therm system, but you may need to hardwire your connections since you're having…

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Answer 4

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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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 Doug! The Firestone Ride-Rite Air Helper Springs #F35FV are the right kit for your 2026 Ford F-350 FX4 dually. However, you will need to measure to be sure it fits. The distance from the top of your rear axle to the top of the jounce bump stop…

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Answer 7

Hey Jon; I was actually just talking to Furrion about heat options for the Chill Cube yesterday (1/21/2025). At this time, the only way to have heat with this unit is through a furnace on a ducted setup. The Furrion Chill Cube RV AC w/ Air…

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Answer 8

Yes, it will work. You'll just need to cut the Lance 6-pin connector out and rewire it into the etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector item #e99011. Here are the individual functions of that Lance 6-pin:…

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Answer 9

Hey Neil. The 18,000 Btu Furrion Chill Cube RV Air Conditioner item #LC34DX fits a 14-1/4" x 14-1/4" cutout which is pretty standard on RV's. If you meant to write Dometic instead of domestic then yes it'll fit in your existing…

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Answer 10

Hey Matt, Furrion typically has 4 wires running to their thermostats and the Chill Cube Thermostat #LC74DX is no exception. The harness you see with the thermostat would plug into the Chill Cube's controller and has 4 wires to extra wire to to…

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Answer 11

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 12

The difference between an load range C and load range D tire in the same size is the capacity and psi rating. The two tires will still have the same dimensions and fit on the same wheel. The D rated tire has a higher capacity. For a ST175/80D13 like…

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Replacement AC for 2007 Monaco Knight Class A With Dometic Duo-Therm

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