Window AC to rooftop AC

[jjrbus]

I was surfing the web and found an article by Professor95 on converting a window AC unit to a rooftop air unit.

I have done a search here and have found no further posts on it. I am in a situation where it might work well for me, but am interested in how it worked long term?

I have a 94 Toyota Seabreeze that I would like a small AC for and have read that the Coleman Polar Cub is horribly noisy so that is out. The other option is to screw a piece of scrap plywood to the back and duct tape and bailing wire a window unit there. Can't bring myself to do that just yet.

This is a 21 foot motorhome so am thinking even 11000 btu is too big and that 8000 should be about right?? That is not based on any knowledge, just what I am reading on the internet!

Any thoughts, input, opinions, advice, suggestions or wisecracks greatly appreciated.
JIm SW FL 94 Toyota Seabreeze

[jjrbus]

Thats why they call you Mr Wizzard

[MrWizard]

You can PM the professor
Might get you a quicker response

[jjrbus]

Thanks for the input greatly appreciated. I was hoping professor 95 might surface.
JIm

[Dutch_12078]

Here's a link to Professor95's window/roof conversion post and thread:

Converting a Window A/C to Rooftop RV unit

[RoyB]

You probably don't have much open floor space but the portable air conditioners might be of interest for you.



I have seen house type air conditioners mounted in the walls of a trailer with the heavy part sitting on an inside table/cabinet arrangement.

GOOGLE IMAGES

Never seen one mounted on the trailer roof before. Modifying to be a down draft probably a hugh task...

Roy Ken

[Dutch_12078]

We had an '86 Toyota/Dolphin 21' Class C that I installed a 13.5k Btu/H Carrier roof unit on. There were times in 100+ deg heat that it provided marginal cooling, but most of the time it was fine. A bit noisy in the small space with direct venting though. The ducted A/C's in our Class A are much quieter, not surprisingly.

[pianotuna]

Hi Jim,

Welcome to the forums.

I'd go with a model intended for roof top use. RV's are notoriously under insulated. I'd stick with 13500 btu's as that is a common size--so it may be cheaper.