For RVers, a generator is the difference between a campsite where you can run the air conditioner on a 95-degree afternoon and one where you sit in the heat waiting for shore power. The modern RV market has settled firmly on inverter generators: they throttle the engine to match the load, which makes them dramatically quieter and more fuel-efficient than the old open-frame contractor units, and they produce the clean, low-distortion sine-wave power that your converter, TV, and CPAP actually want. For a typical 30-amp travel trailer or Class C, the sweet spot is a 3,500–4,500-watt unit with a built-in TT-30R outlet, which lets you plug your shore cord straight in and start a 13,500–15,000 BTU air conditioner without an adapter or a power-management gymnastics routine.
The two questions that actually sort this category are power and portability, and they pull against each other. A whisper-quiet 2,200-watt Honda is a joy to carry and live next to, but it can't start a rooftop AC by itself. A 4,500-watt dual-fuel unit will run that AC plus the fridge and microwave, but it weighs 90-plus pounds and you'll be wrestling it in and out of a storage bay. Dual-fuel capability (gasoline plus propane) has become close to standard in this class, and it's genuinely useful for RVers who already carry LP: propane stores indefinitely, burns cleaner, and gets you home when the gas station is closed.
For long-term RV-park residents the calculus shifts again: you're less worried about carrying weight to a remote boondock and more interested in runtime, durability over hundreds of hours, and the ability to ride out a park power outage. That favors the larger dual-fuel units with bigger tanks and electric or remote start. The picks below span roughly $430 to $2,500 so you can see exactly what you give up at the low end and what you're paying a premium for at the top.
