Recommended size: 3,500–7,500W
For RV living and travel, you need a 3,500W inverter generator at minimum for a single AC unit, or a 5,000–7,500W model to run the AC plus a microwave, hair dryer, or multiple appliances simultaneously. Inverter generators are strongly preferred for RVs because they produce clean power for sensitive electronics and run quietly.
Best value in the portable inverter class. CO Shield safety shutoff, parallel-ready, and RV-ready with a TT-30R outlet.
RV generators serve a broader role than camping generators. Full-time RVers and extended travelers need reliable daily power for air conditioning, cooking appliances, entertainment, and work equipment. A 13,500 BTU RV rooftop AC — the most common size — draws about 1,800W running and 3,000W on startup. That single appliance dictates your minimum generator size at 3,500W. Add a residential-style microwave (1,000W), a hair dryer (1,500W), or a second AC unit (another 1,800W running), and the power demands escalate quickly. The Champion 3500W Inverter is the entry point with its TT-30R RV outlet, but serious RV users who want AC plus other appliances should step up to the 5,000–7,500W medium tier. For boondocking (camping without hookups), fuel efficiency and noise become critical — you may run the generator 4–8 hours daily.
Air conditioning dominates the RV power budget. A 13,500 BTU rooftop AC (standard on most RVs) draws 1,800W running and 2,800–3,000W on startup. A 15,000 BTU unit draws 2,000W running and 3,300–3,500W starting. Dual-AC setups in larger RVs need 3,600W running and 5,500W+ starting (staggered). A 3,500W inverter generator handles a single 13,500 BTU AC as the primary load with about 500W left for lights and small electronics. If you want to run the AC and microwave simultaneously, or have a 15,000 BTU unit, step up to 5,000W+. For dual-AC Class A motorhomes, 7,500W is the minimum for both units running.
Inverter generators are the strong preference for RV use for three reasons. First, they produce clean sine wave power under 3% total harmonic distortion (THD), which protects sensitive RV electronics including TVs, computers, and control boards. Conventional generators can produce 15–25% THD, which causes interference and potential damage over time. Second, inverter generators are dramatically quieter — 48–58 dB versus 69–74 dB — which matters in campgrounds and RV parks with quiet hours. Third, inverter generators adjust engine speed to match the load, saving fuel during light-use periods. The downside is cost: a 3,500W inverter runs $450–600 while a 5,000W+ inverter can exceed $2,000. Many RVers compromise by using a conventional generator for heavy loads (AC + cooking) and switching it off during quiet hours.
Most travel trailers and smaller motorhomes have 30A electrical systems (3,600W max at 120V). Larger Class A motorhomes and fifth wheels typically have 50A systems (12,000W max at 240V). Your generator needs to match your RV's electrical system. A 30A RV connects to a generator's TT-30R outlet (the Champion 3500W Inverter includes this). A 50A RV needs a generator with a 14-50R outlet or an adapter, and realistically needs 7,500W+ to power the 50A system meaningfully. If you have a 50A RV but only a 30A generator, you can use a 50A-to-30A dogbone adapter, but you will be limited to running one AC and lighter loads. Know your RV's electrical system before choosing a generator.
For a 30A RV with one AC unit, a 3,500W inverter generator is the minimum. For a 30A RV running AC plus a microwave or other appliances, step up to 5,000W. For a 50A RV with dual AC, you need 7,500W minimum. Match the generator to your RV's electrical system and your heaviest expected load.
Yes. A 13,500 BTU rooftop AC needs a generator rated 3,000W+ starting. The Champion 3500W Inverter handles this and includes the TT-30R RV outlet. For a 15,000 BTU AC, use a 5,000W+ generator. Always start the generator and let it stabilize before switching on the AC, and turn off other heavy loads during AC startup.
Inverter generators run at 48–58 dB, comparable to a normal conversation. Conventional generators produce 69–74 dB, similar to a vacuum cleaner. Most RV parks enforce quiet hours and some have noise limits. An inverter generator is the courteous and often required choice for campground use. At 20 feet, the Honda EU2200i at 48 dB is nearly inaudible over ambient sounds.
A 3,500W inverter generator with a 1.6-gallon tank runs about 10 hours at 25% load (lights, electronics) or 4–5 hours running the AC at 50–75% load. A 5,000W conventional with a 4-gallon tank runs 10–15 hours at half load. For extended boondocking, carry extra fuel or connect to a larger external fuel source.
Champion
Best value in the portable inverter class. CO Shield safety shutoff, parallel-ready, and RV-ready with a TT-30R outlet.
DuroMax
Affordable dual fuel option with CO Alert safety shutoff and MX2 power boost technology. Runs on gas or propane for flexible fuel options during outages.
Westinghouse
Dual fuel flexibility with CO sensor safety shutoff. Transfer-switch ready with remote electric start and 6.6-gallon tank.
Generac
Powers most essential home circuits during an outage. Electric start and dual fuel flexibility from a trusted brand.
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