Here is the language straight from the Honda web-site. You can go here and do some math and figure it out for certain. http://powerequipment.honda.com/gene...r#Recreational
"Recreational applications: RVers:
The primary factor you need to consider is the size of your AC unit(s).
The EU3000 Handi and EU3000is will power most 13,500 BTU AC units
Larger AC units may need two EU2000i’s paralleled together.
The EU6500is works well for fifth wheels and RVs with dual AC units.
The AC’s needs may vary based on many factors, including the ambient temperature and the efficiency of your model. Your dealer can help you to select the best generator for your individual situation.