To answer your question, you will need at least 3000 W to run your AC. I have a Honda 2000 and it has been a fantastic generator for us. Quiet and dependable but it won't run the AC. We are heading out soon to our favorite lake spot and it is going to be hot! We will just spend lots of time in the lake and sitting in the shade.
If I were in the market I would look at a 3000 but the weight would be a big issue for me. The 2 Hondas that can be matched together is a good idea but quite expensive. I would never get one of those loud contractor generators. Nothing like going out in the woods and have to listen to a neighbor run one of those.
