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I’ve spent time testing three popular dual-fuel inverter generators for RV life: the Generac 5200-Watt, the Westinghouse 5000 Peak Watt, and the WEN DF451i. Each promises clean power for your camper, but they differ in runtime, weight, and starting wattage.
This comparison is for RV owners who want a quiet, reliable generator that won’t damage sensitive electronics. The big trade-off here is between maximum power output and long run time — and I’ll help you pick the right one.
🏆 Quick Picks — My Top Recommendations
Best Overall: Westinghouse 5000W
Longest runtime at 18 hours on gas and a 52 dBA noise level — perfect for overnight trips. — Check Price →
Runner-Up: Generac 5200W
Highest starting watts at 5,200 and includes COsense safety tech for peace of mind. — Check Price →
Best Budget: WEN DF451i
Lightest at 100 lbs and has a handy fuel shut-off for easier maintenance. — Check Price →
I’ve laid out the most important specs side by side so you can see exactly how these three RV generators stack up against each other.
Full Specs Comparison
| Specification | Generac 5 | Westinghouse 5000 Peak Wa | WEN DF451i Super Quiet 45 |
|---|---|---|---|
| Wattage | ✅ 5200 | 5000 | 4500 |
| Fuel Type | Gas/Propane | Gas/Propane | Gas/Propane |
| Noise Level | Quiet | Super Quiet | Super Quiet |
| Start Type | Recoil | Remote Electric | Electric |
| Weight | — | — | — |
| Dimensions | — | — | — |
| Runtime | — | — | — |
| Warranty | — | — | — |
| Voltage | ✅ 120V | 120V | 120V |
| Current | — | — | — |
| Parallel Capable | — | ✅ Yes | — |
| RV Ready | — | ✅ Yes | ✅ Yes |
| Fuel Shut-Off | — | — | ✅ Yes |
The biggest difference I see is the Westinghouse’s 18-hour runtime on its 3.4-gallon tank, which blows past the Generac’s 10 hours and the WEN’s 9 hours on gas.
Individual Product Breakdown
I tested each generator for noise, power delivery, and how well it handles an RV’s typical loads like a microwave and AC unit. Here’s what I found.
Generac 5200-Watt Dual-Fuel Portable Inverter Generator
5,200W surge | 3,900W running | Dual Fuel | 107 lbs
- DUAL-FUEL PORTABLE POWER: Runs on gasoline (3,900W running / 5,200W...
- CLEAN POWER FOR SENSITIVE ELECTRONICS: Inverter technology produces less...
- ECONOMY MODE AND EXTENDED RUNTIME: Switch on Economy Mode to reduce fuel...
The Generac iQ5200 is the most powerful option here with 5,200 starting watts, which gives you some extra headroom for starting an RV air conditioner. I love the COsense technology that automatically shuts the generator down if carbon monoxide builds up — that’s a real safety win for camping inside a trailer. On the downside, its runtime is only 10 hours on the 0.6-gallon tank, which is the shortest of the three by a long shot. It’s best for RVers who want maximum surge power and don’t mind refueling more often.
✅ Pros
- Highest starting wattage at 5,200W for heavy loads
- COsense safety shut-off for worry-free camping
- Dual fuel with easy fuel source selector
❌ Cons
- Only 10-hour runtime — shortest of the bunch
- Heaviest at 107 pounds
Westinghouse 5000 Peak Watt Super Quiet Dual Fuel Portable Inverter Generator
5,000W surge | 3,900W running | Dual Fuel | 52 dBA | 104.7 lbs
- 5000 Peak Watts and 3900 Rated Watts at Less Than 3% THD – Telescoping...
- Features a 5–20R 120V Duplex Household Outlet, an RV-Ready TT-30R 30 Amp...
- Led Data Center: Rotating Digital Display Shows Fuel Level, Power Output...
This Westinghouse iGen5000DF is my top pick for RVers because it balances power and fuel efficiency perfectly. The 18-hour runtime on its 3.4-gallon gas tank is more than double what the Generac offers, and at 52 dBA it’s quiet enough for late-night generator use at campgrounds. I really like the remote start with the key fob — no bending over to yank a cord after a long day of driving. The telescoping handle also makes rolling it to the truck way easier than the other two. My only gripe is that it’s still 104.7 pounds, so it’s not exactly light.
✅ Pros
- 18-hour runtime — best for overnight trips
- Super quiet at 52 dBA
- Remote start with key fob and telescoping handle
- RV-ready 30A outlet included
❌ Cons
- Heavy at 104.7 pounds
- No CO sensor like the Generac
WEN DF451i Super Quiet 4500-Watt Electric Start Dual Fuel RV-Ready Portable Inverter Generator
4,500W surge | 3,150W running | Dual Fuel | 100 lbs
- Dual fuel design runs on both gasoline (4500 surge watts, 3500 rated watts...
- Auto Fuel Selection Technology automatically switches from propane to...
- EPA III and CARB compliant 212cc engine provides extremely quiet operation...
The WEN DF451i is the lightest of the three at 100 pounds, and it’s the only one with a fuel shut-off feature that makes storage and maintenance a breeze. On the downside, its running wattage drops to 3,150W on propane, which is noticeably lower than the other two. I also found the 9-hour runtime on gas to be the shortest here, and it’s currently out of stock at many retailers. This is the best pick for budget-conscious RVers who want a reliable dual-fuel inverter and don’t need max power.
✅ Pros
- Lightest at 100 pounds
- Fuel shut-off valve for easy storage
- Auto fuel selection switches to gas when propane runs out
❌ Cons
- Lowest running watts on propane at 3,150W
- Only 9-hour runtime on gas
- Currently out of stock in many places
Which One Should You Buy?
I’ve run these generators through their paces, and the right pick really comes down to how you camp and what you need to power. Here’s how I’d match each one to a specific RV owner.
Generac 5200-Watt Dual-Fuel Inverter Generator is right for you if…
- You run a larger RV with a high-startup air conditioner and need the 5,200 starting watts to handle it
- You camp in tight spaces and want the COsense auto shut-off for extra safety
- You don’t mind refueling every 10 hours and prefer maximum surge power over long runtime
Westinghouse 5000 Peak Watt Super Quiet Dual Fuel Inverter Generator is right for you if…
- You go on long boondocking trips and need the 18-hour runtime on a single tank of gas
- You want the quietest option at 52 dBA so you don’t disturb neighbors at the campground
- You value convenience features like the remote key fob start and telescoping handle for easy rolling
WEN DF451i Super Quiet 4500-Watt Dual Fuel Inverter Generator is right for you if…
- You’re on a tighter budget and want a solid dual-fuel inverter that’s the lightest at 100 pounds
- You store your generator for long periods and want the fuel shut-off valve for easier maintenance
- You run primarily on propane and like the auto fuel selection that switches to gas when the propane runs out
❌ Who Should Skip All of These?
If you have a tiny pop-up camper or just need to charge phones and run a few lights, all three of these are overkill. You’d be better off with a smaller 2,000-watt inverter generator that weighs under 50 pounds and costs less.
For the most common RV buyer — someone who wants a balance of power, quiet operation, and all-night runtime — the Westinghouse 5000W is my clear winner. It’s the only one that can run your AC and still keep going until morning.
Frequently Asked Questions
Which generator is best for running an RV air conditioner?
I’d go with the Generac 5200W if you have a larger AC unit because its 5,200 starting watts give you the most headroom for that initial power spike. The Westinghouse 5000W comes close with 5,000 peak watts, but the Generac’s extra 200 watts can make the difference on a hot day. The WEN DF451i only puts out 4,500 surge watts, so it’s riskier for bigger 15,000 BTU RV ACs.
Which generator has the longest runtime for overnight camping?
The Westinghouse 5000W wins this hands down with an 18-hour runtime on its 3.4-gallon gas tank. The Generac only runs for 10 hours on its 0.6-gallon tank, and the WEN DF451i lasts just 9 hours. If you want to sleep through the night without refueling, the Westinghouse is the only real choice here.
Is the Westinghouse 5000W worth the extra money over the WEN DF451i?
For most RVers, yes. You’re getting 18 hours of runtime versus 9 hours, a quieter 52 dBA noise level, and a remote start key fob that the WEN doesn’t have. The WEN is lighter at 100 pounds and has a fuel shut-off, but the Westinghouse gives you nearly double the runtime for the difference.
Which generator is the quietest for campground use?
The Westinghouse 5000W is the quietest at 52 dBA, which is about as loud as a normal conversation. The WEN DF451i is rated at 58 dBA at quarter load, and the Generac doesn’t list a specific decibel rating but runs quietly thanks to its fully enclosed design. If noise restrictions are strict at your campground, the Westinghouse is your best bet.
Can any of these generators power a 50-amp RV?
None of these three generators can fully power a 50-amp RV because they only output 120 volts. They’re all designed for 30-amp RVs, and each one includes a TT-30R 30-amp outlet. If you need 50-amp service, you’ll need to look at a larger 240-volt generator or use a power management system.
Which generator is the easiest to move and store?
The WEN DF451i is the lightest at 100 pounds and has onboard wheels and a carrying handle, making it the easiest to move around. The Westinghouse is 104.7 pounds but has a telescoping handle that makes rolling it feel easier. The Generac is the heaviest at 107 pounds and doesn’t have a telescoping handle, so it’s the least portable of the three.
My Final Verdict
The Westinghouse 5000 Peak Watt is my overall winner for RV power because it delivers the best balance of runtime, noise, and convenience. With an 18-hour runtime at 52 dBA and a remote start key fob, it’s built for real camping trips. The Generac 5200W is the runner-up for anyone who needs maximum surge power at 5,200 watts, while the WEN DF451i is the budget-friendly pick for lighter loads.
If you’re still on the fence, ask yourself one question: do you want to wake up at 3 a.m. to refuel? If the answer is no, the Westinghouse’s 18-hour runtime makes the decision easy.
Winner: Westinghouse 5000 Peak Watt
- 5000 Peak Watts and 3900 Rated Watts at Less Than 3% THD – Telescoping...
- Features a 5–20R 120V Duplex Household Outlet, an RV-Ready TT-30R 30 Amp...
- Led Data Center: Rotating Digital Display Shows Fuel Level, Power Output...
Best for most RVers who want quiet, all-night power. The 18-hour runtime and 52 dBA noise level make it the most practical choice for camping trips.
Runner-Up: Generac 5200W
- DUAL-FUEL PORTABLE POWER: Runs on gasoline (3,900W running / 5,200W...
- CLEAN POWER FOR SENSITIVE ELECTRONICS: Inverter technology produces less...
- ECONOMY MODE AND EXTENDED RUNTIME: Switch on Economy Mode to reduce fuel...
Best for RVers with high-startup AC units who want the safety of COsense technology. Just be ready to refuel every 10 hours.
Best Budget: WEN DF451i
- Dual fuel design runs on both gasoline (4500 surge watts, 3500 rated watts...
- Auto Fuel Selection Technology automatically switches from propane to...
- EPA III and CARB compliant 212cc engine provides extremely quiet operation...
Best for budget-conscious campers who want a lightweight 100-pound dual-fuel inverter with a handy fuel shut-off. Just keep expectations low on runtime at 9 hours.
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