Great question!
When buying a generator to run anything in your caravan or motorhome, it is important that you first know what air conditioner you are using.
You will need to know the specifications of the air conditioner to ensure you know the running power and starting power requirements. When you know the specifications of the air conditioner, you're able to check if the generator is strong enough to use. MaxWatt has created a great table to compare their models - please click here to find it