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Author Topic: Replacing the air conditioner in a 2003 Roadtrek 170 Popular on Dodge Chassis  (Read 301 times)


  • Posts: 4
The subject RV has an 8,000BTU Fedders A/C built in--it is under the fiberglass roof. The unit is quite small (12.5"H x 21"w) and is not performing well. I can find no unit being manufactured today that is suitable for an in the wall installation. We did find a window unit that would fit but it overheated almost immediately. I'm considering installing a roof air condition in the existing vent hole, but am concerned that the fiberglass roof would not support the weight.

Has anyone tried this and did it work?



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  • Posts: 1446
I'm not sure why you can't find A/C's that are suited for "through the wall" use.  We have an 8,000 BTU Frigidaire A/C--heat pump in a through the wall application in our "casita" in south TX.  Although that unit is tool tall for your application, this one might work: https://www.lowes.com/pd/Frigidaire-350-sq-ft-Window-Air-Conditioner-115-Volt-8000-BTU-ENERGY-STAR/1000069239
Sandie & Joel

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Maybe someone will remember the thread where a guy was stating his new RV came with a 8000 BTU through the wall a/c and he thought it to small for the size trailer.
I will look but help to find would be nice

Found it

The size of the opening will be the hard part
« Last Edit: August 25, 2018, 07:28:05 PM by darsben »
1990 Fleetwood Southwind on P30 chassis located in
Central NY in summer and beautiful Casa Grande AZ in winter


  • Posts: 4
Hi, thanks for your inputs. The window air conditioner overheats in this installation.

For the second comment, I cannot get ot the link. I must be doing it wrong because it takes me to the "Introduce Yourself" screen


  • Posts: 4
Define "overheats".

The popular replacement for the roadtrek is the LG 5k BTU A\C. I personally prefer one that uses knobs over digital since the digital ones use a computer board for the buttons, solder joints for those were never designed for bumpy roads and jostling, I would expect those AC units to fail at that point.