Hi Suz,
Think of the difference in percentage. A 15 btu unit is a mere 10% larger. The only (doubtful) advantage might be shorter run times. Shorter run time means higher humidity levels in the RV and that leads to greater discomfort.
Running an air conditioner on a generator is often more expensive than paying for a campsite.
inexpensive campsitessuz155 wrote:
I'm just not sure as I do live in Houston and as someone already mentioned not sure if the 13500 can take the kind of the heat and humidity that the Gulf Coast can kick out. Which would limit my choices.
I appreciate everyones help.