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Reason Why Furrion Chill Cube w/ Heat Pump Isn't Backwards Compatible With 2024 And Earlier Systems  

Updated 02/27/2026 | Published 01/26/2026



Question:

What does this note mean? This system is not backwards compatible with any AC systems from 2024 and earlier. I am looking to replace a defective 2024 GE air conditioner with the furrion chill cube. I have been holding out waiting on the heat pump model to come out, now this note from the item description has me concerned. Thank you

0

Expert Reply:

Hey Kenny, welcome back! The reason for that note is because all of the new systems since 2025 use R32 refrigerant due to EPA regulations. Any 2024 and older systems use R410A and their parts are not compatible with the R32 units.

It doesn't mean you can't use the new Chill Cube, it just means you have to completely replace the old system. You can choose from the following based on color and ducted/ductless:

-Furrion Variable Speed Chill Cube RV Air Conditioner w/ Heat Pump - Ductless - 18K Btu - White - R32 # FR87TQ

-Furrion Variable Speed Chill Cube RV Air Conditioner w/ Heat Pump - Ductless - 18K Btu - Black - R32 # FR77TQ

-Furrion Variable Speed Chill Cube RV Air Conditioner w/ Heat Pump - Ducted - 18K Btu - White - R32 # FR67TQ

-Furrion Variable Speed Chill Cube RV Air Conditioner w/ Heat Pump - Ducted - 18K Btu - Black - R32 # FR97TQ

-Furrion Chill Cube RV AC w/ Heat Pump and Wall Thermostat - Ducted - 18K Btu - White - R32 # FR59TQ

-Furrion Chill Cube RV AC w/ Heat Pump and Wall Thermostat - Ducted - 18K Btu - Black - R32 # FR27TQ

Any big trips coming up once you get the new Chill Cube installed?

expert reply by:
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Robin H
Chill Cube
Chill Cube
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Kenny H. profile picture

Kenny H.

1/27/2026

Awesome! As always appreciate the quick and detailed answers!

Robin H. profile picture
Etrailer Expert

Robin H.

1/27/2026

@KennyH happy to help! Let me know if you have any other questions about the Chill Cube.
James M. profile picture

James M.

2/26/2026

In what way would the refrigerant in one unit have anything to do with the refrigerant in another unit? Are you essentially talking about the air distribution box and thermostat that wouldn't be compatible? It's not like the actual internal make-up of the units ever get commingled. I'm not getting all of this talk of compatibility. Can you please detail out a scenario where this is important? Most of us need the whole darn A/C unit, don't we? Thank you.

Robin H. profile picture
Etrailer Expert

Robin H.

2/26/2026

@JamesM basically you can't mix parts from the old systems with a new AC unit. Before this switch, you could potentially leave your existing thermostat and air distribution box (ADB) in place and install a different AC unit. This saved money and the trouble of swapping out all of the parts. Since R32 operates at different temperatures and pressures an R32 AC unit is not backwards compatible with an old ADB or thermostat designed for R410A. If you have an older AC and you need to replace it you need a complete R32 system which includes the AC unit, ADB, and thermostat.
James M. profile picture

James M.

2/26/2026

@RobinH this is what I was thinking. But I still wouldn't have ever thought that, for example, a Coleman ADB would have ever been compatible with a Furrion A/C unit, regardless of the refrigerant. But if the thermostat would have a problem, then I guess I get it. But after all, all that does is tell the unit to start, so it's still a mystery to me all of this talk about the particular refrigerant being the reason.
Robin H. profile picture
Etrailer Expert

Robin H.

2/26/2026

@JamesM it was definitely possible to swap certain AC units before without replacing everything. A lot of people still expect that to be the case, which is why we have made it a point to clarify it on a lot of answers about replacement AC units. The difference in pressure and discharge temperatures means manufacturers redesigned the compressor logic, control boards, and safety parameters. The newer systems use updated electronics and communication protocols, so older ADBs and thermostats can’t properly communicate with or control them.
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