A portable generator is a viable option, but you need to save your dollars for an RV class generator. For example, if your air conditioner requires 2800 – 3000 starting watts, and 1500 – 2000 running watts, a 3,000 watt RV generator will be sufficient for working your air conditioner.Click to see full answer. In this manner, can you run RV AC on generator?To power the average RV air conditioner, the generator needs to have at least a 2000- 4000-watt capacity. There are a lot of factors involved in what size generator will work best for you, but for the most part, you will be able to use your AC and other appliances even with a 2000 watt generator.Additionally, what size generator do I need to run my air conditioner? run a few smaller items. 15,000 btu air conditioner. run a few smaller items. 15,000 btu air conditioner. Buying a Portable RV Generator. Size of Air Conditioner Approximate Starting Watts Approximate Running Watts 13,500 btu 2800-3000W 1500-2000W 15,000 btu 3300-3500W 1300-1800W Likewise, people ask, will a Honda 2000 generator run a RV air conditioner? Simple answer is a Honda EU2000i is pushing its limits to run a 13,500 BTU air conditioner. NOT recommended. IF your batteries are down the converter will be running at full power then the fridge + the A/C unit.. you may find over time you will damage the A/C unit.. from low voltage.How many watts does it take to run a RV air conditioner?Air conditioners are the energy hogs of the average RV. A seven thousand BTU rooftop RV AC needs around 1700 watts to start up and 600 watts to keep it running. A larger ten thousand BTU RV AC needs around 2000 watts to start up and 700 watts to keep running.