Installing window unit a\c in slideout window ?

First off, even though you've a Travel Supreme, the walls aren't that thick or strong for any more than a very light one. You'll have to build a platform to fit your window frame tightly, with bracing on the outside to try keeping it all from pulling the window frame out. Don't think a little extra weight will bother the slide any, but I'd be careful about that window frame.

Why didn't you go for an indoor unit in the first place? We had our 15k unit fail last year just before we had to go to something we couldn't duck out of, and I got one from Amazon (https://smile.amazon.com/gp/product/B00HZKPNE6/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1), and cut a plywood piece to fit a window for the two hoses. The thing worked very well in 85 degree heat & sun. After we got back home, I got a new AC unit for the roof and the indoor one replaced a window unit in our sticks & bricks home.

Be sure the window you choose is not your ESCAPE WINDOW...

Roy Ken

You might consider one of the new portable AC's that just run a snorkel to the window.
I used one at my moms house and I couldn't believe how well it worked.

I agree with Walt. Wall strength is a big issue.

Real question is

WHY :H

This is not a good plan

waltbennett wrote:
First off, even though you've a Travel Supreme, the walls aren't that thick or strong for any more than a very light one. You'll have to build a platform to fit your window frame tightly, with bracing on the outside to try keeping it all from pulling the window frame out. Don't think a little extra weight will bother the slide any, but I'd be careful about that window frame.

Why didn't you go for an indoor unit in the first place? We had our 15k unit fail last year just before we had to go to something we couldn't duck out of, and I got one from Amazon (https://smile.amazon.com/gp/product/B00HZKPNE6/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1), and cut a plywood piece to fit a window for the two hoses. The thing worked very well in 85 degree heat & sun. After we got back home, I got a new AC unit for the roof and the indoor one replaced a window unit in our sticks & bricks home.

..........I have been using a 14,000btu Newair unit for the last 5 years ! The compressor died last Sept-16 . So , I still haven't decided IF I will get it fixed , we'll see . thanks , jf

I'd suggest a portable unit that has pipes that go through the window or you could use a hole saw (prefered). That way the weight stays in the house and the floor rather than a thin wall/window. Not that expensive by comparison to the rooftop unit. Buy the 2 pipe system (more money) but it is so much more effecient as the cooling air for the compressor is taken from outside and the cool air in the rv is the same all the time. No need to cool outside air over and over again.

ScottG wrote:
You might consider one of the new portable AC's that just run a snorkel to the window.
I used one at my moms house and I couldn't believe how well it worked.

Actually they are not "new".

Have used various models in my S&B for years - even though I have central A/C. (no more window A/Cs for me!)

Available in several BTU 'flavors', and heat if desired.

Not much floor space required - but some planning for the exhaust tube and H2O drains.
(IMO - the above is easier in a trlr than a S&B).

:C