How To Install the Advent Air RV Air Conditioner On Roof Less Than 2-1/2" Thick

Question

Question:

Im taking out my old unit and noticed the opening is 14.5 X 14.5 and the roof is only 2- 2.5 inches thick...... Do i need an adapter for this size and thin roof ?

asked by: Terry W

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Expert Reply:

The Advent Air RV Air Conditioner w/ Air Distribution Box and Start Capacitor part # ACM135C is designed for roofs 14-1/4" x 14-1/4" ranging from 2-1/2" to 5" thick. If the roof thickness does not meet this minimum requirement you can simply make a spacer which you can see in the attached installation video (15:30). The opening size should not be an issue.

expert reply by: Conner L

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Answer 1

Congrats on the new trailer Greg! For your 2026 ATC ROM 450, I recommend the Furrion Variable Speed Chill Cube RV Air Conditioner w/ Heat Pump item #FR87TQ in black or item #FR77TQ in white. These are complete AC systems that include a built in heat…

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Answer 2

Hello Michael, Sorry for the delay in getting an answer, but I am currently waiting for the information myself. As you can see this is a new item that is available for preorder, so we do not have much information about the unit. I will let you know…

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Answer 3

Thank you for reaching out! The best thing for your situation is to go with the 3,500 lb Dexter Axle #T3584F-8974 you are looking at. While you can upgrade your axles to the 5,200 lb #e55GR, you won't really see a benefit from it unless you also…

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Answer 4

Hey Eugene, this kit is actually no longer available but those spacers were part of a bracket that was supposed to help it fit to the lower unit of a Coleman AC unit. We found that these types of adapters don't consistently work well though so we…

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Answer 5

Great question Amie, RV A/C's like the Furrion Chill Cube RV A/C #FR77TQ are designed to fit in a standard 14" x 14" opening of an RV roof. As long as your existing opening is that standard size, no structural modification or enlarging…

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Answer 6

Hey Nick, welcome back! There is a foam divider that is included with the Furrion Variable Speed Chill Cube RV Air Conditioner w/ Heat Pump item #FR77TQ. We've had customers trim this to accommodate a thinner roof. Furrion does not make a…

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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

Hey Anthony, The Furrion Chill Cube RV Air Conditioner #LC22BX requires a roof thickness of 3.5" to 6" according to the Furrion installation instructions. Since your roof is less thick than this you'll need to install some bracing into…

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Answer 9

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 10

Hello Sam; that is a great question! I reached out to Furrion and you will be able to use the Furrion Chill Cube #FR69TD (white) or #FR49TD (black) with your furnace. However, the remote is not capable of operating the furnace at this time. Also, we…

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Answer 11

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 12

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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How To Install the Advent Air RV Air Conditioner On Roof Less Than 2-1/2" Thick

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