A portable generator turns boondocking from a compromise into a lifestyle. It keeps the AC running on 100°F afternoons, charges your batteries overnight, and lets you camp wherever you want — not just where there's a power pedestal. But choosing the right one means understanding wattage ratings (which are frequently misleading), noise levels (which campgrounds enforce), and fuel options (which affect both convenience and runtime).
For in-depth generator sizing, fuel comparisons, and home backup guides, visit our dedicated resource at PortableGenerators.co — the complete portable generator reference.
Sizing: How Many Watts Do You Need?
The number that matters is running watts (continuous power), not peak/surge watts (the brief spike when motors start). A 13,500 BTU RV rooftop air conditioner typically draws around 1,300–1,800 running watts but needs 2,500–3,000 watts to start the compressor. Here's a rough load guide:
| Appliance | Running Watts | Starting Watts |
|---|---|---|
| 13,500 BTU RV AC | 1,300–1,800 | 2,500–3,000 |
| 15,000 BTU RV AC | 1,800–2,200 | 3,000–3,500 |
| RV refrigerator (AC mode) | 150–400 | 400–600 |
| Microwave | 800–1,200 | Same |
| Phone/laptop chargers | 50–100 | Same |
| LED lights (all) | 50–100 | Same |
| CPAP machine | 30–60 | Same |
| Hair dryer | 1,000–1,800 | Same |
For a 30-amp RV running one AC plus basic loads, a 3,000–4,500 watt inverter generator covers most scenarios. For 50-amp rigs with dual ACs, you're looking at 5,500+ watts — or two smaller generators connected in parallel. Adding a SoftStart (hard-start capacitor) to your AC unit reduces startup draw by 60–70%, letting a smaller generator handle the load.
Our Top Picks
Honda EU2200i — Best Ultra-Quiet (Light Duty)
The Honda EU2200i is the benchmark that every other portable inverter generator is measured against. Exceptionally quiet (47 dBA at 25% load — quieter than normal conversation), supremely reliable, and produces the cleanest power output in its class. It's the gold standard for CPAP users, sensitive electronics, and campgrounds with strict noise rules.
The trade-off is power: at 1,800 running watts, it won't start a standard RV air conditioner on its own without a SoftStart device. But with a SoftStart installed on your AC, it handles one rooftop unit comfortably. Two EU2200i units connected in parallel (with Honda's parallel kit) deliver 3,600 running watts — enough for a 30-amp RV without restrictions. Honda's reputation for reliability and resale value is essentially unmatched in portable generators.
Industry-leading quiet operation · Honda reliability and resale value · Ultra-clean power for sensitive electronics · Lightweight (under 47 lbs) · Parallel capable
Can't start RV AC without SoftStart · Gasoline only (no dual-fuel) · Premium price · Limited to light-duty loads solo
Westinghouse iGen4500DF — Best Dual-Fuel for RV
The Westinghouse iGen4500DF hits the sweet spot that most RVers are actually shopping for: enough wattage to start and run one RV air conditioner (even without a SoftStart), dual-fuel flexibility, remote start, and an RV-ready TT-30R outlet that accepts your 30-amp shore cord directly — no adapter needed.
Dual-fuel capability means you can run gasoline for maximum power or switch to propane for cleaner burning, easier storage, and no stale fuel issues. At 52 dBA (25% load), it's quiet enough for most campgrounds. The remote start and electric start button mean no yanking a pull cord. Running wattage drops to about 3,300W on propane (approximately 10% less than gasoline), which is still enough for a single AC plus basic loads.
Starts RV AC without SoftStart · Dual-fuel flexibility · RV-ready 30-amp outlet · Remote start · Good value for the wattage
Heavier (~93 lbs) · Louder than Honda at full load · Reduced wattage on propane · Not as refined as Honda build quality
Champion 4000-Watt RV-Ready Inverter — Best Budget
Champion consistently delivers the best wattage-per-dollar in the inverter generator market, and the 4000-watt RV-Ready model is their most popular for campground use. 3,500 running watts is enough to start and run a single RV AC comfortably. The built-in RV-ready 30-amp outlet (TT-30R), electric start, and Quiet Technology housing make it a complete RV power solution at a price point significantly below Honda and Westinghouse.
Champion's economy mode adjusts engine speed to match the load, extending fuel runtime and reducing noise when you're not running the AC. The trade-off vs. more expensive models is noise (louder at full load than Honda or Westinghouse) and refinement (the engine note is rougher, and long-term durability reports are less consistent). Champion's 3-year warranty and wide parts availability help offset these concerns.
Outstanding value · Starts RV AC · RV-ready 30-amp outlet · Electric start · Economy mode for fuel savings · 3-year warranty
Louder than premium competitors · Gasoline only · Build quality not as refined · Heavier than lighter-duty models
WEN 6800-Watt Dual-Fuel Inverter — Best High-Output
When one AC unit isn't enough — for 50-amp rigs with dual ACs, large fifth wheels, or situations where you need to run the AC and the microwave and charge the batteries simultaneously — the WEN 6800 delivers the output without stepping up to a conventional (non-inverter) generator. At 5,500 running watts on gasoline, it handles dual ACs with SoftStart devices installed, or a single AC plus virtually everything else in the rig without load management.
Dual-fuel support, electric start, and a clean inverter waveform (THD under 1.2%) make it practical for extended boondocking and home backup. The weight (roughly 120+ lbs) makes this a two-person lift — it's not going on and off the bumper easily. Best suited for rigs with a dedicated generator compartment or storage bay.
Enough power for dual ACs (with SoftStart) · Dual-fuel · Clean inverter power · Electric start · RV-ready outlets
Heavy (120+ lbs) · More expensive · Louder than smaller inverters · Requires significant storage space
Inverter vs. Conventional: Why It Matters for RVs
Inverter generators produce clean, stable electricity (pure sine wave, THD under 3%) that's safe for all electronics — laptops, CPAP machines, smart TVs, converter/chargers, and lithium BMS boards. They adjust engine speed to match the load, which means they're quiet at partial loads and fuel-efficient. Most weigh under 100 lbs. This is what you want for RV use.
Conventional generators run at a fixed 3,600 RPM regardless of load, producing more power per dollar but significantly more noise (70–80+ dBA) and "dirtier" power with higher total harmonic distortion. They can damage sensitive RV electronics, including your converter/charger and any lithium battery management systems. Conventional generators are better suited for job sites and home backup — not campgrounds.
Quick Decision Guide
30-amp RV, one AC, weekend camping: Honda EU2200i (with SoftStart) or Champion 4000W. The Honda for ultimate quiet; the Champion for value.
30-amp RV, one AC, extended boondocking: Westinghouse iGen4500DF. Dual-fuel flexibility for longer stays, enough power for AC without a SoftStart, remote start convenience.
50-amp RV, dual ACs, full-timing: WEN 6800 dual-fuel, or two smaller inverters in parallel. The WEN for a single-unit solution; parallel units for modularity and redundancy.
Light loads only (no AC): A 2,000W inverter generator handles battery charging, CPAP, lights, fans, and small appliances. Honda EU2200i or Cummins P2500i are the leading options in this class.
Pair your generator with solar for the best of both worlds. SolarPanelKits.co covers panel sizing, charge controllers, and complete off-grid solar setups that reduce generator runtime and fuel costs.