[Motor31]

Wingnut covered a couple items already. First question is how much "stuff" do you intend to run with it. If it's everything shot of the AC, then a single Honda 2000 will do it for you.

If you need only one AC and other stuff then you'll need either 2 Honda 2000's or a single 3.5Kw built in gen set.

The built in has some considerations. It's noisier, it uses more fuel and musty be exercised regularly under load to keep it going. It also will be more expensive to service. If you get a propane powered gen set it will use almost 1 gallon of fuel an hour. You could burn up all of your propane in one day. If you get a gasoline generator you'll still burn almost a gallon per hour and you'll need a separate fuel tank for it.

The Honda's use 9/10 of a gallon per 6 to 9 hours each and are far quieter both inside and outside the rig. Thery have built in fuel tanks and can also be run from an external tank. They do not run inside the trailer so fumes, heat and noise are less of an issue.

If you need more power than a 3.5 Kw then you are looking at at least a 5Kw or more to run both AC units. Major fuel concerns there.