Best Way To Add A/C to a older trailer?

[jimx200]

I'm helping out my sister by trying to find a used trailer under 20'. I did find a Forest River model in great shape, but it does not have A/C and since we are in California, it's pretty much needed at times.

What's the easiest/best solution? Generator running a portable unit, having a roof A/C installed, or? Anyone know ballpark cost of the first two solutions? Thanks much.

[Lwiddis]

Trailers in that length range won’t have a storage bay fora generator. Will your sister be able to move a 45 pound inverter generator from the TV to the ground or table? Change the oil? Etc.

[wanderingaimles]

you mentioned two frequent methods. A third is using a mini split system. Mini splits generally use less power, but are more expensive than a small window unit AC. They are also quieter and more efficient.
Here are several in the appropriate size range of 9000 btu. You would want a 115/120 volt model.
Mini splits

Check you tube there are quite a few video's folks mounting them on trailers.