Replacement for GE ARC13AACBL1 AC on 2021 Heartland Milestone 370FLMB
Updated 01/13/2026 | Published 01/10/2026
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Question:
I have a 2021 heartland milestone 370flmb that has two GE ARC13AACBL1 AC units on it, and I need to replace one of them that a low tree limb completely destroyed. Im wondering if a furrion chill cube 18k would work, and would I need a ducted version? Ive got ductwork in the ceiling for the AC, so I assume yes I would want the ducted version. If I keep the current ge thermostats, they should still control the gas furnace correct? Thanks for any help!
asked by: Mitchell M
Expert Reply:
Hey Mitchell! Sorry to hear about your tree incident. Yes, the Furrion Chill Cube RV AC # FR49TD will be able to replace your GE AC. This is a complete system, which is required when moving to the new R32 refrigerant. You do want the ducted version since there is a design difference between the ducted and non-ducted units.
You can keep the GE thermostats hooked up to run your other GE AC and the furnace. The Chill Cube will run off of the remote, the wall thermostat is not necessary. I noticed there is a price difference right now so you're actually saving on this particular one even though it includes the wall thermostat. You can sit that thermostat to the side as a spare just in case. If you would rather have white # FR69TD is also available.
Any big trips coming up with your 5th wheel this spring/summer?
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Furrion Chill Cube RV AC w Air Distribution Box, Thermostat - Ducted - 18,000 Btu - Black
- RV Air Conditioners
- Complete AC System
- Cool Only
- 18000 Btu
- 115V
- Single Zone
- Rooftop
- Ducted
- Black
- Furrion
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Bob S.
1/13/2026
Our Dometic system the front AC is the master so in order to keep the back AC and two gas furnaces on the original thermostat we had to do some changes to the dip switches on the board so the rear AC is the master and had to wire the telephone communications cables together at the front. You’ll want to have a wiring diagram of your current system to understand how your will work.