Hi jadrjr,
Welcome to the Heartland Owners Forum. There's lots of useful information here along with a great bunch of friendly and helpful people.
An inverter generator provides clean power for electronics; this is what most people go with as your RV has quite a bit in the way of electronic control boards (refrigerator, water heater, furnace, thermostat, microwave, TV, radio, etc.). A 3500 watt, or a linked pair of 2000 watt generators will meet requirements for most people. Of course, it all depends on what you want to run.