Replacement for Dometic AC On 2009 Monaco Dynasty Regal IV
Updated 07/14/2026 | Published 07/09/2026
Products Featured in This Question
Question:
We have a 2009 Monaco Dynasty Regal IV with three Dometic roof units, model number 630616.331. To run these and the furnace/Aqua-Hot, we use the Dometic five-button thermostat. Is there a direct replacement for these units? Regardless of the manufacturer.
asked by: Bill F
Expert Reply:
Hi Bill! You will need to completely replace the system since you have old Dometic R410a units on your Monaco. Everything switched to R32 refrigerant following new EPA regulations in 2025, and the new systems are not backwards compatible. For a replacement I recommend the Advent Air RV AC. It looks like you have a ducted setup so you can choose from the following based on color and capacity:
-Advent Air RV Air Conditioner System - 13,500 Btu - Single Zone - Ducted - White - R32 # ADV87QR
-Advent Air RV Air Conditioner System - 13,500 Btu - Single Zone - Ducted - Black - R32 # ADV59QR
-Advent Air RV Air Conditioner System - 15,500 Btu - Single Zone - Ducted - White - R32 # ADV99QR
-Advent Air RV Air Conditioner System - 15,500 Btu - Single Zone - Ducted - Black - R32 # ADV69QR
The Advent Air systems are reliable and budget friendly. All of these include the rooftop unit, air distribution box, and wall thermostat. You also have the ability to add a Bluetooth remote # ADV67QR which sets them apart from similar systems.
A heat strip # ADV34QR and start capacitor # ACMSCKIT are available as well. All of these will be able to run the furnace, I'm not familiar with the Aqua-Hot system, but you could potentially run that off of the existing thermostat if need be.
Where are you headed next with your Monaco Dynasty Regal IV?
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Product Page this Question was Asked From
Advent Air RV Air Conditioner System - 15,500 Btu - Single Zone - Ducted - White - R32
- RV Air Conditioners
- Complete AC System
- Cool Only
- 15500 Btu
- Standard Height
- Single Zone
- Rooftop
- Ducted
- White
- Advent Air
more information >
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