Best Replacement For Duo-Therm 630035.321 On Holiday Rambler Motorhome

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Question:

I have a Duo-Therm model 630035.321 in a Holiday Rambler motorhome its a heatpump/AC 13500 BTU I need a replacement for this unit do you have something?

asked by: Mike L

0

Expert Reply:

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 AC units use new R32 refrigerant and these units are not backwards compatible with old AC systems. So for a replacement I recommend the following:

- GE Appliances Deluxe Plus RV AC System w/ Heat - Ductless - 15,000 Btu - Black - Complete System # GE34RR

This comes with everything you need to replace/upgrade your AC system. You get the rooftop unit with heat pump, distribution box, controller and thermostat. This will work with a ductless AC system so please confirm this is what you have.

expert reply by: Jesse M

0

Lynn

3/28/2026

I need to replace the same unit except mine is ducted

Jesse M.

3/30/2026

@Lynn Hey Lynn, yes, we have that exact unit for a ducted system too. Take a look at the following: - GE Appliances Deluxe Plus RV AC System w/ Heat Pump - Ducted - 15,000 Btu - Black - Complete System # GE75ZR

Answer 1

Hey Lynn, thanks for reaching out. The Advent #ADV23SR you mentioned comes with a manual control distribution box and does not operate thru a wall thermostat. It also doesn't have any heat capability so while you technically could use it to…

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Answer 2

For your Dometic DuoTherm the Advent Air Unit part #ACDOM150 would be your best option that will give you the higher BTU rating 15k and easily connects to the current wiring you have now.

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Answer 3

Hey Tyler! Great Question. This part was added so it is available in the future. Realistically, nobody will be using it for quite some time since we just switched to R32 units here in 2025 and they all have a warranty. You can ignore this part and…

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Answer 4

Since you have a Dometic Duotherm 630035.321 we do have great options for AC unit replacements that will plug right into the current wiring you have like with the Furrion Chill HE kit part #FR42PV which we have found to be the quietest and coldest…

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Answer 5

Hey Mike! Since it is a supplemental AC and doesn't need to cool the whole thing a 13,500 Btu unit will work well. You can use the Advent Air RV Air Conditioner System #ADV23SR. This comes with a manual air distribution box so you won't have…

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Answer 6

Hey Wayne! Everything is switching to the new R32 refrigerant which isn't backwards compatible. It also means old R410A parts are disappearing so now is a good time to make the switch. Even if this wasn't the case, we stopped recommending…

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Answer 7

Hey Martin! Carrier is no longer making RV AC units. Although there were some plug and play replacements available in the past, everything has switched to the new R32 refrigerant following 2025 EPA guidelines. This means a complete system replacement…

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Answer 8

Hey Robin! I'm sorry to say that none of the Advent Air AC models are able to replace a Dometic Duo Therm like yours. What I recommend is completely replacing the system. Not only will this allow you to avoid any compatibility issues, it will…

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Answer 9

Hello Gary, thanks for reaching out. Do your Dometic units use a traditional ceiling mounted distribution box? If so, we do have an option for replacing them, but it will be a full AC system replacement. Reason being new AC units use R32 refrigerant…

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Answer 10

Hey Jim, thanks for reaching out! For a completely new AC system we have the Furrion Chill HE RV Air Conditioner System #FR24FJ which uses two AC units that communicate with a single thermostat to give you the feeling like you're at home. These…

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Answer 11

The Advent Air Replacement RV Air Conditioner for Dometic Setup w/ Start Capacitor - 15,000 Btu - White #ACDOM150 will be the replacement AC unit for your 2003 Holiday Rambler. This unit will be plug and play with your distribution box and…

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Answer 12

To replace the Duo Therm AC unit on your 2006 Holiday Rambler Ambassador I recommend the Furrion Chill HE RV Air Conditioner System - Manual - 15,000 Btu - White #FR92PR. The #FR92PR AC unit is a perfect replacement for your older Duo Therm unit and…

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Best Replacement For Duo-Therm 630035.321 On Holiday Rambler Motorhome

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