For buyers weighing a gas vs propane generator, the best choice depends on whether you value longer runtime and easy refueling or cleaner-storing fuel and flexible storage. My best overall pick is the WEN DF360iX, a compact inverter model that balances usable output with dual-fuel flexibility. The Westinghouse WGen9500DF suits buyers who need more backup capacity, while the Westinghouse iGen2550DFc is a better fit for lighter loads and easier transport. Across this lineup, the main tradeoffs are power versus portability, inverter-style output versus conventional generator capacity, and fuel availability during an outage. Read on for the full comparison and guidance on matching a generator to your loads, fuel plan, and intended use.
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Key Takeaways
- Inverter models lead for portable, lower-noise use: The WEN DF360iX and Westinghouse iGen2550DFc make more sense for camping and sensitive electronics than the large open-frame backup models.
- Large dual-fuel units favor backup capacity over easy handling: The Westinghouse WGen9500DF and DuroStar DS13000MX target heavier home loads, but their size and weight make portability a secondary concern.
- Propane adds storage flexibility, not a universal runtime advantage: Its usefulness depends on having compatible cylinders, enough stored fuel, and output that suits the connected load.
- Not all dual-fuel choices serve the same role: Models range from compact inverter generators to high-output conventional units, so wattage alone does not identify the right fit.
- Tri-fuel is a distinct advantage for fuel flexibility: The Generac GP9500E can run on three fuel types, which may help buyers who want more options during supply disruptions, though it is not an inverter pick.
- Product names and wattage do not settle the comparison: Buyers still need to check running output, connection needs, sound expectations, and the manufacturer’s fuel-specific ratings before purchase.
| WEN DF360iX 3600-Watt Dual-Fuel Portable Inverter Generator |  | Best Compact Inverter | Fuel type: Gasoline and propane | Surge output: 3,600 watts on gasoline; 3,500 watts on propane | Engine: 149cc, 4-stroke | VIEW ON AMAZON | See Our Full Breakdown |
| Westinghouse iGen5000DF Dual Fuel Portable Inverter Generator |  | Best for Long Inverter Runtime | Fuel type: Gasoline or propane | Peak output: 5,000 watts | Running output: 3,900 watts | VIEW ON AMAZON | See Our Full Breakdown |
| Westinghouse WGen9500DF Dual Fuel Portable Generator |  | Best for Whole-Home Backup Capacity | Fuel types: Gasoline and propane | Gasoline output: 12,500 peak watts; 9,500 running watts | Propane output: 11,200 peak watts; 8,500 running watts | VIEW ON AMAZON | See Our Full Breakdown |
| Westinghouse 4650 Peak Watt Dual-Fuel Portable Generator |  | Best Straightforward RV and Household Option | Fuel types: Gasoline and propane | Peak output: 4,650 watts on gasoline; propane output is listed as lower | Engine: 212cc, 4-stroke OHV | VIEW ON AMAZON | See Our Full Breakdown |
| WEN DF475T 4,750-Watt Dual-Fuel Portable Generator with Electric Start and Wheel Kit |  | Best for 120V/240V Flexibility | Fuel types: Gasoline and propane | Gasoline output: 4,750 surge watts; 3,800 running watts | Propane output: 4,350 surge watts; 3,500 running watts | VIEW ON AMAZON | See Our Full Breakdown |
| Pulsar PG2200BiS 2,200W Dual-Fuel Portable Inverter Generator |  | Best Compact Dual-Fuel Pick | Fuel types: Gasoline or LPG | Peak output: 2,200 watts on gasoline; 2,000 watts on LPG | Engine: 80 cc, 3 hp, 4-stroke, single-cylinder OHV | VIEW ON AMAZON | See Our Full Breakdown |
| Champion 4000-Watt Dual Fuel RV Ready Portable Inverter Generator |  | Best for RV Safety and Portability | Fuel type: Gasoline or propane | Starting watts: 4,000 watts | Running watts: 3,000 watts on gasoline; 2,700 watts on propane | VIEW ON AMAZON | See Our Full Breakdown |
| Westinghouse iGen4000DFcv 4000 Watt Dual Fuel Portable Inverter Generator |  | Best Quiet 4,000-Watt Class Pick | Fuel types: Gasoline or propane | Peak output: 4,000 watts | Noise level: 52 dBA | VIEW ON AMAZON | See Our Full Breakdown |
| Westinghouse iGen2550DFc Dual-Fuel Portable Inverter Generator |  | Best for Quiet, Lightweight RV Power | Fuel type: Gasoline or propane | Peak output: 2,550 watts | Running output: 1,900 watts | VIEW ON AMAZON | See Our Full Breakdown |
| BILT HARD 4500W Dual-Fuel Portable Inverter Generator |  | Best Higher-Output Dual-Fuel Pick | Fuel type: Gasoline or propane | Peak output: 4,500 watts on gasoline; 4,150 watts on propane | Engine: 141 cc 4-stroke OHV, air-cooled | VIEW ON AMAZON | See Our Full Breakdown |
| PowerSmart 3800 Watt Dual Fuel Inverter Generator for Camping or Home Use |  | Best for Quiet Propane Runtime | Starting watts: 3,800 W gasoline; 3,500 W propane | Running watts: 3,300 W gasoline; 3,100 W propane | Noise level: 59 dBA at 25% load | VIEW ON AMAZON | See Our Full Breakdown |
| Westinghouse 6500-Watt Dual-Fuel Portable Home Backup Generator |  | Best for Practical Home Backup | Peak watts: 6,500 W gasoline; 5,800 W propane | Running watts: 5,300 W gasoline; 4,800 W propane | Fuel tank capacity: 4.7 gallons | VIEW ON AMAZON | See Our Full Breakdown |
| WEN DF480iX 4800-Watt Dual Fuel Portable Inverter Generator |  | Best for Sensitive Electronics | Surge wattage: 4,800 W gasoline; 4,320 W propane | Engine displacement: 224 cc | Noise level: 62 dB at quarter load | VIEW ON AMAZON | See Our Full Breakdown |
| Generac GP9500E Tri-Fuel Portable Generator with Electric Start |  | Best Tri-Fuel Choice | Fuel types: Gasoline, liquid propane, natural gas | Running watts: 9,500 W on gasoline | Starting watts: 12,500 W on gasoline | VIEW ON AMAZON | See Our Full Breakdown |
| DuroStar DS13000MX 13,000-Watt Dual-Fuel Portable Generator |  | Best for Maximum Dual-Fuel Output | Fuel types: Gasoline and propane | Peak wattage: 13,000 W | Running wattage: 10,500 W | VIEW ON AMAZON | See Our Full Breakdown |
| gas vs propane generator | Runtime | Outlets | Engine | Noise level |
|---|---|---|---|---|
| WEN DF360iX 3600-Watt Dual-Fue | Up to 5 hours at half load on gasoline; up to 14 hours at half load on a 20-pound LPG tank | Two 120V 5-20R, one 120V TT-30R RV, one 12V DC, and two 5V USB | 149cc, 4-stroke | 65 dB at quarter load |
| Westinghouse iGen5000DF Dual F | Up to 18 hours | — | — | — |
| Westinghouse WGen9500DF Dual F | Up to 12 hours | Two GFCI 120V 5-20R, one L14-30R 30A, and one 14-50R 50A | 457cc, 4-stroke OHV | — |
| Westinghouse 4650 Peak Watt Du | Up to 14 hours per tank | One 120V 5-20R duplex, one TT-30R 30A RV-ready, and one L5-30R 30A | 212cc, 4-stroke OHV | — |
| WEN DF475T 4,750-Watt Dual-Fue | Up to 11 hours at half load | Two 120V GFCI 5-20R, one 120V/240V L14-30R, and one 12V DC | 224cc, 4-stroke OHV | — |
| Pulsar PG2200BiS 2,200W Dual-F | Up to 8 hours on gasoline at half load | 2 × 120 V 15 A AC; 1 × 5 V USB | 80 cc, 3 hp, 4-stroke, single-cylinder OHV | 60 dB |
| Champion 4000-Watt Dual Fuel R | Up to 25 hours on propane | 120 V 25 A TT-30R; 120 V 20 A duplex; 12 V automotive; parallel outlets | — | 64 dBA |
| Westinghouse iGen4000DFcv 4000 | Up to 7 hours | 1 × TT-30R; 2 × 120 V duplex; 2 × USB | — | 52 dBA |
| Westinghouse iGen2550DFc Dual- | Up to 12 hours, depending on load and fuel | TT-30R 30 A; 2 × 120 V 20 A; 2 × USB | — | As low as 52 dBA |
| BILT HARD 4500W Dual-Fuel Port | 13 hours | 120 V 20 A duplex; 120 V 30 A TT-30R; dual USB; 12 V 8 A DC | 141 cc 4-stroke OHV, air-cooled | 58 dBA at 23 feet |
| PowerSmart 3800 Watt Dual Fuel | Up to 8 hours on gasoline at 25% load; up to 24 hours on a 20-pound propane tank | 120V 30A L5-30R twist-lock, 120V 20A duplex, 12V 8A DC, dual 5V 2.1A USB | — | 59 dBA at 25% load |
| Westinghouse 6500-Watt Dual-Fu | — | 5-20R 120V duplex, TT-30R 30A, L14-30R 30A | 274 cc, 4-stroke OHV | — |
| WEN DF480iX 4800-Watt Dual Fue | 7 hours gasoline at half load; 20 hours propane at half load | Four 120V NEMA 5-20R, one TT-30R RV, one 12V DC, two 5V USB | — | 62 dB at quarter load |
| Generac GP9500E Tri-Fuel Porta | Up to 9.5 hours at 50% load; up to 14 hours at 25% load on gasoline | Two 120V 20A GFCI duplex, one 120/240V 30A L14-30R, one 120/240V 50A 14-50R | 500 cc Generac OHV | — |
| DuroStar DS13000MX 13,000-Watt | 17 hours | — | 500 cc, 4-stroke OHV | — |
More Details on Our Top Picks
WEN DF360iX 3600-Watt Dual-Fuel Portable Inverter Generator
The WEN DF360iX is the compact choice for buyers who want to switch between gasoline and propane without hauling a larger open-frame generator. Its 49-pound weight and inverter output suit portable use and sensitive electronics, while the CO shutdown sensor adds a useful layer of protection. Propane runtime can reach 14 hours at half load with a 20-pound tank, compared with up to five hours on gasoline, though those figures use different fuel supplies and are not a direct tank-to-tank comparison. Against the Westinghouse iGen5000DF, this WEN is easier to move but gives up substantial output and remote start. Its 1.5-gallon gas tank also means more frequent refueling; buyers needing longer gasoline operation or heavier loads should look higher in the lineup.
Pros:- Runs on gasoline or propane, giving buyers a choice of fuel availability and storage needs.
- Inverter output is designed for sensitive electronics.
- At 49 pounds, it is lighter to move than the larger Westinghouse iGen5000DF.
- Includes CO shutdown, fuel shutoff, and multiple household, RV, DC, and USB outlets.
Cons:- The 1.5-gallon gasoline tank limits runtime between refills.
- Its output is well below the Westinghouse iGen5000DF and the home-focused WGen9500DF.
- The parallel connection kit is sold separately.
Best for: Campers, RV owners, and electronics users who prioritize a relatively light dual-fuel inverter over high output.
Not ideal for: Households seeking to power several large appliances or run for long stretches on the built-in gasoline supply.
- Fuel type:Gasoline and propane
- Surge output:3,600 watts on gasoline; 3,500 watts on propane
- Engine:149cc, 4-stroke
- Gasoline tank:1.5 gallons
- Runtime:Up to 5 hours at half load on gasoline; up to 14 hours at half load on a 20-pound LPG tank
- Noise level:65 dB at quarter load
- Weight:49 pounds
- Outlets:Two 120V 5-20R, one 120V TT-30R RV, one 12V DC, and two 5V USB
- Safety features:CO shutdown, low-oil and low-fuel shutdown, and overload protection
Our verdict“Choose the DF360iX for portable, electronics-friendly dual-fuel power, but skip it if you need long gasoline stretches or substantial backup capacity.”
Westinghouse iGen5000DF Dual Fuel Portable Inverter Generator
The Westinghouse iGen5000DF pairs dual-fuel flexibility with a longer stated gasoline runtime than the compact WEN DF360iX: up to 18 hours from its 3.4-gallon tank, depending on load and conditions. That makes it a stronger fit for extended outages or RV stops where refueling is inconvenient. Its 3,900 rated watts, less-than-3% THD, and household and RV outlets balance usable capacity with inverter power for electronics. Remote and electric start also make operation less hands-on than the recoil-start options in this group. The tradeoff is its larger, wheeled format: it is less convenient to carry than the 49-pound WEN DF360iX, and a claimed 52 dBA does not mean silent operation. I would choose this over the WEN for runtime and output, but not for minimal size.
Pros:- Up to 18 hours of stated runtime on a 3.4-gallon gasoline tank.
- Rated output of 3,900 watts exceeds the WEN DF360iX’s compact capacity.
- Remote, electric, and recoil starting give several ways to start the unit.
- Less than 3% THD and an RV outlet support electronics and RV use.
Cons:- Larger wheeled design is less suited to carrying than the 49-pound WEN DF360iX.
- The stated 52 dBA noise level still represents audible generator operation.
- Actual runtime varies with load and operating conditions.
Best for: RV owners and outage planners who want inverter power, remote starting, and longer gasoline intervals between refills.
Not ideal for: Buyers who need a lightweight generator for frequent carrying, or who expect operation to be quiet enough to go unnoticed.
- Fuel type:Gasoline or propane
- Peak output:5,000 watts
- Running output:3,900 watts
- Gasoline tank:3.4 gallons
- Runtime:Up to 18 hours
- Noise output:As low as 52 dBA
- Total harmonic distortion:Less than 3%
- Starting methods:Remote, electric, and recoil
- RV outlet:TT-30R, 30A
Our verdict“Pick the iGen5000DF when longer gasoline runtime and more inverter output matter more than carrying a compact generator.”
Westinghouse WGen9500DF Dual Fuel Portable Generator
For buyers whose main question is whether gasoline or propane can support substantial home backup, the Westinghouse WGen9500DF offers the most capacity in this five-product group. It supplies 9,500 running watts on gasoline and 8,500 on propane, so the choice of fuel comes with a meaningful output reduction. A 6.6-gallon gasoline tank and up to 12 hours of stated runtime suit extended operation better than the smaller tanks on the WEN DF475T and Westinghouse 4650. The tradeoff is scale: its 457cc engine and heavy-duty build are aimed at a fixed backup spot, not frequent carrying. Remote electric start and transfer-switch-ready outlets support home use, but buyers should plan for assembly and placement. Compared with the iGen5000DF, this sacrifices inverter portability for far more backup power.
Pros:- Highest stated running output among these five products, especially on gasoline.
- Propane operation offers an alternative fuel, with 8,500 running watts available.
- Remote electric start reduces the effort of starting a large backup generator.
- L14-30R and 14-50R outlets support home backup connections.
Cons:- Its heavy-duty size makes it a poor fit for buyers who need easy portability.
- Propane running output is 1,000 watts lower than gasoline output.
- Requires assembly and a suitable, well-planned outdoor operating location.
Best for: Homeowners planning transfer-switch-ready backup for multiple household circuits and able to accommodate a large generator.
Not ideal for: Campers, frequent movers, or buyers who need a compact inverter generator for sensitive electronics.
- Fuel types:Gasoline and propane
- Gasoline output:12,500 peak watts; 9,500 running watts
- Propane output:11,200 peak watts; 8,500 running watts
- Engine:457cc, 4-stroke OHV
- Gasoline tank:6.6 gallons
- Runtime:Up to 12 hours
- Starting methods:Remote electric start and recoil start
- Outlets:Two GFCI 120V 5-20R, one L14-30R 30A, and one 14-50R 50A
- Warranty:3-year limited service, labor, and parts
Our verdict“Choose the WGen9500DF for high-capacity home backup with two fuel options, not for camping or portable inverter use.”
Westinghouse 4650 Peak Watt Dual-Fuel Portable Generator
The Westinghouse 4650 is a practical middle ground for buyers who want gasoline-or-propane operation and RV-ready connections without stepping up to the WGen9500DF’s home-backup scale. Its 4-gallon tank is rated for up to 14 hours per tank, offering more gasoline capacity than the WEN DF360iX’s 1.5-gallon tank. The 212cc engine and household, TT-30R, and L5-30R outlets make it a fit for basic RV or backup needs, while automatic low-oil and CO shutdown address two safety concerns. This is a conventional generator, not an inverter model like the Westinghouse iGen5000DF, so buyers who specifically need inverter output for sensitive electronics should compare that model instead. Output is also listed as lower on propane than gasoline, and some assembly is required.
Pros:- Gasoline and propane operation gives flexibility when one fuel is less convenient.
- Four-gallon gasoline tank is larger than the WEN DF360iX’s 1.5-gallon tank.
- Includes TT-30R RV and household outlets, plus an L5-30R outlet.
- Automatic low-oil and CO shutdown are included.
Cons:- It is not described as an inverter generator, unlike the Westinghouse iGen5000DF.
- Propane output is lower than gasoline output.
- Some assembly is required before use.
Best for: RV users and homeowners who want conventional dual-fuel power, a four-gallon gasoline tank, and an RV-ready outlet.
Not ideal for: Electronics-focused buyers seeking inverter output, or households needing the WGen9500DF’s higher running capacity.
- Fuel types:Gasoline and propane
- Peak output:4,650 watts on gasoline; propane output is listed as lower
- Engine:212cc, 4-stroke OHV
- Gasoline tank:4 gallons
- Runtime:Up to 14 hours per tank
- Outlets:One 120V 5-20R duplex, one TT-30R 30A RV-ready, and one L5-30R 30A
- Safety features:Automatic low-oil and carbon monoxide shutdown
- Compliance:EPA compliant
- Warranty:3-year limited service, labor, and parts coverage
Our verdict“Choose the Westinghouse 4650 for conventional dual-fuel RV and household power, but look to an inverter model for electronics-focused use.”
WEN DF475T 4,750-Watt Dual-Fuel Portable Generator with Electric Start and Wheel Kit
The WEN DF475T stands out for buyers whose choice is not just gasoline versus propane, but also whether their backup equipment needs 120V or 240V output. Its L14-30R twist-lock outlet supports both voltage options, giving it a more specialized role than the Westinghouse 4650’s listed outlet set. On gasoline, it delivers 3,800 running watts; propane lowers that to 3,500, so buyers should size their expected load around the fuel they plan to use. Electric start and the included wheel and handle kit make a conventional generator easier to operate and move, while the 4-gallon tank is rated for up to 11 hours at half load. Compared with the inverter Westinghouse iGen5000DF, this WEN emphasizes voltage flexibility over inverter features and longer stated runtime. It also carries a shorter, two-year warranty.
Pros:- Switchable 120V/240V output supports a broader range of compatible equipment than a 120V-only setup.
- Electric start avoids relying only on recoil starting.
- Includes wheel and handle kit for moving the generator.
- Includes a 47-inch LPG connection hose and oil.
Cons:- Running output falls from 3,800 watts on gasoline to 3,500 watts on propane.
- The 11-hour runtime is specified at half load and depends on fuel and operating conditions.
- Its two-year warranty is shorter than the three-year coverage listed for the Westinghouse 4650 and iGen5000DF.
Best for: Homeowners who need a portable dual-fuel generator with 120V/240V output for compatible backup equipment.
Not ideal for: Buyers prioritizing inverter output for sensitive electronics or seeking a longer warranty and stated runtime.
- Fuel types:Gasoline and propane
- Gasoline output:4,750 surge watts; 3,800 running watts
- Propane output:4,350 surge watts; 3,500 running watts
- Voltage:120V/240V
- Engine:224cc, 4-stroke OHV
- Starting method:Electric start
- Gasoline tank:4 gallons
- Runtime:Up to 11 hours at half load
- Outlets:Two 120V GFCI 5-20R, one 120V/240V L14-30R, and one 12V DC
Our verdict“Choose the DF475T if 120V/240V flexibility and electric start are priorities; choose an inverter alternative if sensitive-electronics power matters more.”
Pulsar PG2200BiS 2,200W Dual-Fuel Portable Inverter Generator
For buyers choosing between gasoline’s higher output and propane’s storage advantages, the Pulsar PG2200BiS keeps both options in a compact 44-pound package. Gasoline supplies 1,800 running watts, while LPG drops that to 1,600, so propane is better treated as a convenient backup fuel than a way to preserve full capacity. Its inverter output suits small electronics, and parallel capability offers a route to more power with a compatible second unit. Compared with the Westinghouse iGen2550DFc, the Pulsar has less rated gasoline output and a much shorter listed gasoline runtime, but it remains a smaller, straightforward choice for modest loads. The tradeoff is clear: its 1.18-gallon tank and brief LPG runtime limit extended use, and it is not sized for several high-draw appliances.
Pros:- Runs on gasoline or LPG, giving buyers a choice between readily available fuel and propane storage.
- 44-pound weight makes it easier to move than the larger 4,000-watt models in this group.
- Inverter output is designed for sensitive electronics.
- Parallel capability can expand available power with a compatible generator.
Cons:- Rated output falls from 1,800 watts on gasoline to 1,600 watts on LPG.
- A 1.18-gallon tank and up-to-eight-hour gasoline runtime at half load call for more frequent refueling than larger models.
- Listed LPG runtime is only about 75 minutes on a 1-pound tank at half load.
Best for: Campers and occasional outage users who want a carryable generator for electronics, lights, and a few modest loads, with gasoline or LPG as fuel options.
Not ideal for: RV owners or households expecting to power several appliances at once; its 1,800 gasoline running watts and lower LPG output leave limited headroom.
- Fuel types:Gasoline or LPG
- Peak output:2,200 watts on gasoline; 2,000 watts on LPG
- Engine:80 cc, 3 hp, 4-stroke, single-cylinder OHV
- Runtime:Up to 8 hours on gasoline at half load
- Noise level:60 dB
- Weight:44 pounds
- Outlets:2 × 120 V 15 A AC; 1 × 5 V USB
Our verdict“Choose the Pulsar for light, portable dual-fuel power, but pick the Westinghouse iGen2550DFc if you need more running watts and longer listed runtime.”
Champion 4000-Watt Dual Fuel RV Ready Portable Inverter Generator
The Champion pairs RV-ready power with a comparatively portable, under-55-pound design, making it a strong fit for travelers who want dual-fuel flexibility without stepping up to a much heavier generator. It delivers 3,000 running watts on gasoline and 2,700 on propane, so gasoline gives more working capacity while propane offers a useful alternative when stored fuel matters. Its CO Shield shutoff and clean inverter power add practical reassurance around camping and electronics. Compared with the Westinghouse iGen4000DFcv, the Champion specifies less gasoline running output, but its safety system and stated propane runtime stand out. The tradeoffs are that its 64 dBA rating is louder than the Westinghouse’s 52 dBA, and parallel expansion requires a separate kit.
Pros:- Gasoline and propane operation lets owners choose between higher output and a stored alternative fuel.
- CO Shield automatically shuts the engine down if unsafe carbon monoxide levels are detected.
- Clean power with less than 3% THD is suited to sensitive electronics.
- Under-55-pound weight and a TT-30R outlet suit portable RV use.
Cons:- Its 64 dBA noise rating is higher than the Westinghouse iGen4000DFcv’s listed 52 dBA.
- Parallel kit is sold separately, adding a required extra for linking generators.
- Gasoline running output is 3,000 watts, below the 3,300 watts listed for the Westinghouse iGen4000DFcv.
Best for: RV travelers and campers who need a TT-30R connection, clean power for electronics, and a portable dual-fuel unit with automatic carbon-monoxide shutdown.
Not ideal for: Buyers prioritizing very quiet operation or maximum gasoline running watts; the Westinghouse iGen4000DFcv is listed as quieter, while this Champion provides 3,000 running watts on gasoline.
- Fuel type:Gasoline or propane
- Starting watts:4,000 watts
- Running watts:3,000 watts on gasoline; 2,700 watts on propane
- Runtime:Up to 25 hours on propane
- Noise level:64 dBA
- Weight:Under 55 pounds
- Outlets:120 V 25 A TT-30R; 120 V 20 A duplex; 12 V automotive; parallel outlets
- Warranty:3-year limited
Our verdict“Pick the Champion if RV-friendly portability and CO Shield matter more than quieter operation or the Westinghouse iGen4000DFcv’s higher gasoline running output.”
Westinghouse iGen4000DFcv 4000 Watt Dual Fuel Portable Inverter Generator
Among these dual-fuel choices, the iGen4000DFcv makes its strongest case through quiet operation: its listed 52 dBA is lower than the Champion 4000-Watt’s 64 dBA. That can matter at a campsite or when the generator sits near occupied areas. Gasoline or propane operation adds fuel flexibility, and the TT-30R outlet connects directly to compatible RV equipment; USB ports and clean power broaden its usefulness for smaller electronics. The available data lists 4,000 peak watts but does not specify separate gasoline and propane running outputs, so I would not assume equal capacity on both fuels. Compared with the BILT HARD 4500W, it has a lower stated noise figure, while the BILT HARD lists more peak watts and a 13-hour runtime. Wheels and a telescoping handle aid moving, though recoil starting may take physical effort.
Pros:- Listed 52 dBA noise level is lower than the Champion 4000-Watt’s 64 dBA.
- Gasoline and propane operation gives users fuel flexibility.
- TT-30R outlet supports compatible RV connections, with USB ports for smaller devices.
- Wheels and a telescoping handle make the unit easier to move around a site.
Cons:- The supplied specs state peak watts but do not give separate running output for gasoline and propane.
- Listed runtime is up to 7 hours, shorter than the Champion’s stated propane runtime.
- Recoil starting requires physical effort compared with an electric-start model.
Best for: RV users and campers who put a low stated noise level, an RV-ready connection, and dual-fuel choice ahead of a specified long runtime.
Not ideal for: Buyers who need clearly stated running watts for each fuel or want a listed runtime beyond seven hours; the supplied specs do not answer those needs as clearly as the BILT HARD listing.
- Fuel types:Gasoline or propane
- Peak output:4,000 watts
- Noise level:52 dBA
- Runtime:Up to 7 hours
- Fuel tank capacity:1.69 gallons
- Power quality:Less than 3% THD
- Outlets:1 × TT-30R; 2 × 120 V duplex; 2 × USB
- Warranty:3-year limited service, labor, and parts coverage
Our verdict“Choose the iGen4000DFcv when a quieter stated rating and easy site mobility outweigh longer listed runtime and more explicit fuel-specific running-watt figures.”
Westinghouse iGen2550DFc Dual-Fuel Portable Inverter Generator
The iGen2550DFc is a practical middle ground for buyers who need more capacity than the Pulsar PG2200BiS but do not need a 4,000-watt-class machine. Its 1,900 running watts slightly exceed the Pulsar’s gasoline rating, while the 43.2-pound weight and listed 52 dBA noise level suit portable, quieter use. Gasoline or propane operation gives owners a choice, and the TT-30R outlet adds an RV connection that the Pulsar’s outlet list lacks. The tradeoff is headroom: 1,900 running watts will not cover multiple high-draw appliances at once. Its up-to-12-hour runtime is appealing, but actual endurance depends on load and fuel. Compared with the larger Westinghouse iGen4000DFcv, this model is easier to carry but supplies less power for heavier RV or backup loads.
Pros:- Gasoline or propane operation provides a choice of fuel for travel or backup use.
- At 43.2 pounds, it is lighter than the listed larger 4,000-watt-class alternatives.
- 52 dBA listed noise level and economy mode support quieter, fuel-conscious operation.
- TT-30R RV outlet, USB outlets, and clean inverter power support a mix of camping and electronics needs.
Cons:- 1,900 running watts limit simultaneous use of high-power appliances.
- Parallel operation requires a compatible second generator.
- The up-to-12-hour runtime varies with load and fuel, so it is not a guaranteed duration for every setup.
Best for: Campers and RV owners who want a relatively light, quiet dual-fuel generator for electronics, lights, and modest loads with a 30A RV outlet.
Not ideal for: Households planning to run several high-wattage appliances together; the iGen4000DFcv offers a higher peak class for buyers who need more capacity.
- Fuel type:Gasoline or propane
- Peak output:2,550 watts
- Running output:1,900 watts
- Runtime:Up to 12 hours, depending on load and fuel
- Noise level:As low as 52 dBA
- Weight:43.2 pounds
- Outlets:TT-30R 30 A; 2 × 120 V 20 A; 2 × USB
- Features:CO sensor with automatic shutdown; low-oil shutdown; overload protection; parallel capable
Our verdict“Choose the iGen2550DFc for quiet, portable RV and camping power; step up to the iGen4000DFcv if your loads need more capacity.”
BILT HARD 4500W Dual-Fuel Portable Inverter Generator
The BILT HARD stands out for buyers who want more peak capacity than the 4,000-watt-class options here without giving up gasoline-or-propane operation or inverter power. It lists 4,500 peak watts on gasoline and 4,150 on propane, plus less than 3% THD for electronics. Its TT-30R outlet, duplex outlets, USB ports, and 12 V DC output make it more versatile for RV and general backup connections than the smaller Pulsar PG2200BiS. It also lists a 13-hour runtime, though the supplied data does not specify the load conditions behind that figure. The costs in practicality are its 57.7-pound weight and a 58 dBA rating at 23 feet; the Champion is lighter, while the Westinghouse iGen4000DFcv lists a lower noise level. Parallel expansion also requires a separate kit.
Pros:- Higher peak output than the other reviewed models, with separate gasoline and propane figures provided.
- Less than 3% THD supports sensitive electronics.
- TT-30R, AC, USB, and 12 V DC outlets cover varied connection needs.
- CO sensor with automatic engine shutdown adds a safety measure.
Cons:- At 57.7 pounds, it is heavier than the Champion and Westinghouse iGen2550DFc.
- Its 58 dBA rating at 23 feet is higher than the Westinghouse iGen4000DFcv’s listed 52 dBA.
- Parallel kit is not included, and the stated 13-hour runtime has no load condition specified in the supplied data.
Best for: RV owners and backup users who need higher peak output, multiple connection types, and both gasoline and propane capability in an inverter generator.
Not ideal for: Buyers who need a particularly light or quiet unit; the Champion weighs under 55 pounds, and the Westinghouse iGen4000DFcv has a lower listed noise figure.
- Fuel type:Gasoline or propane
- Peak output:4,500 watts on gasoline; 4,150 watts on propane
- Engine:141 cc 4-stroke OHV, air-cooled
- Power quality:Less than 3% THD
- Runtime:13 hours
- Noise level:58 dBA at 23 feet
- Weight:57.7 pounds
- Outlets:120 V 20 A duplex; 120 V 30 A TT-30R; dual USB; 12 V 8 A DC
Our verdict“Pick the BILT HARD for its higher listed peak output and broad outlet selection, but choose a lighter model if frequent carrying matters more.”
PowerSmart 3800 Watt Dual Fuel Inverter Generator for Camping or Home Use
I’d choose the PowerSmart 3800 when lower noise and extended propane operation matter more than maximum output. Its 59 dBA rating at 25% load is quieter than the WEN DF480iX’s listed 62 dB, while its 24-hour runtime on a standard 20-pound propane tank can reduce refueling interruptions at light loads. Gasoline supplies more power—3,300 running watts versus 3,100 on propane—so buyers switching fuels should account for that modest output drop. The 30A twist-lock outlet adds useful connection flexibility, and the CO sensor and low-oil shutdown address key operating risks. At 50.7 pounds, though, it is less appealing to campers who need to carry a generator far; the smaller WEN DF480iX also offers electric start, which this recoil-start model lacks.
Pros:- Propane runtime is listed at up to 24 hours with a standard 20-pound tank.
- Quiet 59 dBA operation at 25% load suits campsites and residential use.
- Includes a 120V 30A twist-lock outlet alongside household, DC, and USB connections.
- CO sensor, overload protection, and low-oil shutdown add useful safety measures.
Cons:- Recoil starting takes more effort than the WEN DF480iX’s electric start.
- At 50.7 pounds, it is a substantial load for a portable camping generator.
- Running output falls from 3,300 watts on gasoline to 3,100 watts on propane.
Best for: Campers and homeowners who prioritize quiet, light-load operation and want to run for long periods from a standard propane tank.
Not ideal for: Buyers who need easy electric starting, frequent solo carrying, or the higher output of a larger home-backup generator.
- Starting watts:3,800 W gasoline; 3,500 W propane
- Running watts:3,300 W gasoline; 3,100 W propane
- Noise level:59 dBA at 25% load
- Runtime:Up to 8 hours on gasoline at 25% load; up to 24 hours on a 20-pound propane tank
- Fuel tank capacity:1.3 gallons
- Outlets:120V 30A L5-30R twist-lock, 120V 20A duplex, 12V 8A DC, dual 5V 2.1A USB
- Weight:50.7 pounds
- Starting system:Recoil
Our verdict“Choose the PowerSmart if quiet operation and long propane runs matter more than electric start or easy carrying.”
Westinghouse 6500-Watt Dual-Fuel Portable Home Backup Generator
The Westinghouse 6500 is a sensible middle ground for buyers who want household backup capacity without stepping up to the much larger DuroStar DS13000MX. Gasoline delivers 5,300 running watts, with propane providing 4,800—enough to support a useful set of household loads, though fuel choice affects what can run at once. Its 120/240V output and L14-30R outlet suit transfer-switch connections, while the TT-30R serves RV users. The 4.7-gallon tank and stated runtime of up to 14.5 hours help reduce trips to refuel, and the wheel kit makes moving it easier than moving a compact but heavy inverter such as the PowerSmart 3800. This is a conventional portable generator, not an inverter model, and some assembly is required before use.
Pros:- Provides 120/240V output with an L14-30R transfer-switch-ready outlet.
- Propane and gasoline operation offer fuel flexibility during outages.
- Up to 14.5 hours of stated runtime supports longer stretches between refueling.
- Wheel kit and starter accessories, including a propane hose, are included.
Cons:- Gasoline and propane running output differ by 500 watts, affecting load planning.
- Assembly is required before operation.
- As a conventional generator, it is less suited than inverter models such as the WEN DF480iX to buyers prioritizing clean, quiet power.
Best for: Homeowners seeking mid-range outage capacity, transfer-switch compatibility, and the option to use gasoline or propane.
Not ideal for: Buyers who need inverter-style power for sensitive electronics, quiet campsite operation, or the higher output for larger household loads.
- Peak watts:6,500 W gasoline; 5,800 W propane
- Running watts:5,300 W gasoline; 4,800 W propane
- Fuel tank capacity:4.7 gallons
- Maximum runtime:Up to 14.5 hours
- Voltage:120/240 V
- Engine:274 cc, 4-stroke OHV
- Outlets:5-20R 120V duplex, TT-30R 30A, L14-30R 30A
- Warranty:3-year limited service, labor, and parts coverage
Our verdict“Pick the Westinghouse 6500 for flexible, transfer-switch-ready home backup without the scale of a 10,000-watt-plus generator.”
WEN DF480iX 4800-Watt Dual Fuel Portable Inverter Generator
For buyers comparing gasoline with propane around electronics, the WEN DF480iX pairs dual-fuel choice with inverter output described as clean power for sensitive devices. It is rated for 4,000 running watts on gasoline, while the listed propane surge figure is 4,320 watts; the supplied data does not state propane running watts, so I would not plan a propane load from the surge number alone. Its 62 dB rating at quarter load is a little louder than the PowerSmart 3800’s 59 dBA figure, but WEN adds electric start and a fuel shut-off feature that can simplify starting and storage. The RV-ready TT-30R and USB ports broaden its usefulness beyond basic household outlets. Buyers seeking more capacity can look to the Westinghouse 6500, though that model is not presented as an inverter generator.
Pros:- Inverter output is specified as clean power suitable for sensitive electronics.
- Electric start is convenient compared with recoil-only options such as the PowerSmart 3800.
- Fuel shut-off technology can reduce fuel left in the carburetor during storage.
- Includes an RV-ready TT-30R outlet, household outlets, DC, and USB ports.
Cons:- Propane running watts are not specified in the supplied product data.
- The parallel connection kit is sold separately for buyers who want more output.
- At 62 dB at quarter load, it is louder by specification than the PowerSmart 3800.
Best for: RV owners and homeowners powering sensitive electronics who want inverter-style output with gasoline and propane fuel options.
Not ideal for: Buyers who need a clearly specified propane running-watt rating, or who want a parallel kit included for expanding capacity.
- Surge wattage:4,800 W gasoline; 4,320 W propane
- Engine displacement:224 cc
- Noise level:62 dB at quarter load
- Runtime:7 hours gasoline at half load; 20 hours propane at half load
- Outlets:Four 120V NEMA 5-20R, one TT-30R RV, one 12V DC, two 5V USB
- Starting and safety:Electric start; CO Shutdown Sensor
- Warranty:3-year limited warranty
Our verdict“Choose the WEN DF480iX if inverter power and electric start matter more than a fully stated propane output rating.”
Generac GP9500E Tri-Fuel Portable Generator with Electric Start
The Generac GP9500E earns a distinct place for buyers who want a third fuel option: gasoline, propane, or natural gas. That flexibility can matter more during a long outage than the two-fuel setup on the DuroStar DS13000MX, particularly when a home already has a natural-gas connection. On gasoline, it supplies 9,500 running watts and 12,500 starting watts, with electric start and an included battery easing operation compared with recoil-start models like the PowerSmart 3800. Its 50A outlet adds a route for larger loads, while COsense and GFCI protection cover key safety needs. The tradeoff is bulk: at 219 pounds, this is a wheeled backup unit, not something to carry around. Runtime figures are supplied for gasoline, but not for propane or natural gas.
Pros:- Three fuel choices include natural gas, unlike the gasoline-and-propane DuroStar DS13000MX.
- High gasoline output and a 50A outlet suit substantial home-backup loads.
- Electric start and the included 12V battery reduce starting effort.
- COsense shutdown and GFCI-protected outlets add safety features.
Cons:- At 219 pounds, it is difficult to move despite its wheels.
- The supplied runtime figures cover gasoline, not propane or natural gas.
- Its gasoline tank provides up to 9.5 hours at 50% load, so extended operation requires fuel planning.
Best for: Homeowners who want high-output backup and the option to connect to natural gas as well as use gasoline or propane.
Not ideal for: Campers, buyers needing a lightweight unit, or shoppers who require specified runtime figures for propane or natural gas.
- Fuel types:Gasoline, liquid propane, natural gas
- Running watts:9,500 W on gasoline
- Starting watts:12,500 W on gasoline
- Engine:500 cc Generac OHV
- Fuel tank capacity:7.5 gallons
- Runtime:Up to 9.5 hours at 50% load; up to 14 hours at 25% load on gasoline
- Outlets:Two 120V 20A GFCI duplex, one 120/240V 30A L14-30R, one 120/240V 50A 14-50R
- Weight:219 pounds
Our verdict“Choose the Generac if natural-gas compatibility and high backup output outweigh the challenge of moving a 219-pound generator.”
DuroStar DS13000MX 13,000-Watt Dual-Fuel Portable Generator
If raw backup capacity is the deciding factor, the DuroStar DS13000MX offers 10,500 running watts and 13,000 peak watts from a gasoline-or-propane setup. That makes it a stronger fit for several substantial loads than the Westinghouse 6500, whose gasoline running output is 5,300 watts. The 50A transfer-switch-ready outlet supports a home connection, and electric start avoids relying on a pull cord for this large engine. A metal frame, CO sensor, and low-oil shutdown round out its practical features. Its 8.3-gallon tank is paired with a stated 17-hour runtime, though the provided data does not identify the load or fuel for that figure. Unlike the Generac GP9500E, it does not run on natural gas, and its high capacity can be more generator than basic backup needs require.
Pros:- 10,500 running watts provide substantially more stated output than the Westinghouse 6500.
- Runs on gasoline or propane for fuel flexibility.
- Electric start and a 50A transfer-switch-ready outlet suit home-backup use.
- CO detection and low-oil shutdown add automatic safeguards.
Cons:- Its high output may be unnecessary for basic backup loads and can make storage less convenient.
- The 17-hour runtime figure does not specify the load or fuel in the supplied data.
- It does not offer natural-gas operation, unlike the Generac GP9500E.
Best for: Homeowners or job-site users who need high output from a gasoline-or-propane generator and have space to store a large unit.
Not ideal for: Buyers with modest backup needs, limited storage space, or a preference for natural-gas operation like the Generac GP9500E offers.
- Fuel types:Gasoline and propane
- Peak wattage:13,000 W
- Running wattage:10,500 W
- Engine:500 cc, 4-stroke OHV
- Voltage:240 V
- Fuel tank capacity:8.3 gallons
- Runtime:17 hours
- Features:Electric start, CO sensor, low-oil shutdown, 50A transfer-switch-ready outlet
Our verdict“Choose the DuroStar when substantial dual-fuel output is the priority and you can accommodate a large portable generator.”
How We Picked
I ranked these generators by how well their design matches a real use case, rather than by peak wattage alone. The main criteria were usable running power, gas and propane capability, inverter design where applicable, portability, starting and operating convenience, and fit for camping, RV use, or home backup. I also weighed how much practical value a feature adds: for example, high output matters for larger backup loads, while a compact inverter design is more useful when carrying the generator or powering sensitive electronics.
The ranking favors versatile models that balance fuel choice, output, and day-to-day usability, then assigns specialized options to the buyers they suit best. Large conventional generators rank well for substantial backup needs but lower for portability; compact inverter units do the reverse. The product list includes several overlapping Westinghouse models and multiple output classes, so I distinguish them by their intended role rather than treating similar features as proof that one is automatically superior. I did not assume that every generator produces the same output on propane as on gasoline; buyers should confirm the manufacturer’s fuel-specific running and starting ratings.
Factors to Consider When Choosing Gas Vs Propane Generator
Choosing between gasoline and propane is only one part of the decision: the right generator also needs to match the loads you plan to run, the way you will store fuel, and how often you expect to move it. I use these factors to avoid a common mistake—buying extra peak wattage while overlooking runtime, connections, or handling.
Match Running Watts to Your Actual Loads
List the appliances you expect to power at the same time and use their running watts as your starting point. Motors in refrigerators, pumps, and tools can draw extra power at startup, so a generator that barely covers their steady demand may still struggle when they switch on. Check both starting and running requirements instead of adding appliance labels without distinction. Also compare the generator’s fuel-specific ratings, since advertised output can differ between gasoline and propane. A larger generator can cover more loads, but it may be heavier, louder, and less convenient when you only need essentials. If you cannot identify your priority loads, size the plan before choosing a wattage class.
Plan Fuel Around Storage and Resupply
Gasoline is widely available and can be convenient when a vehicle or nearby station provides a resupply option, but stored fuel needs suitable containers and periodic attention. Propane can be stored in approved cylinders for longer periods, which may help buyers preparing for occasional outages, but cylinders take space and must be available in sufficient quantity. Do not assume that a generator’s fuel label tells you how long it will run: load level, tank or cylinder size, and fuel-specific efficiency all affect runtime. Check how the unit connects to a propane supply and what cylinder sizes the manufacturer permits. During a widespread outage, either fuel may become harder to obtain, so a dual-fuel model offers options rather than a guarantee of supply. Choose based on the fuel you can safely store and replenish.
Decide Whether Inverter Output Is Worth the Tradeoff
Inverter generators are often the better match for camping, RV use, and powering electronics because they are designed to provide stable output and may adjust engine speed to changing demand. Conventional open-frame models in this lineup prioritize higher output, making them more suitable for larger backup loads or equipment with substantial starting needs. The tradeoff is that an inverter model may offer less capacity for the same general size class, while a high-output conventional generator can be harder to move and may be less suited to quiet settings. Do not choose by the word “inverter” alone; verify output, outlets, and the manufacturer’s guidance for your devices. If sensitive equipment is part of the plan, look for the stated power quality specifications rather than relying on a product category label.
Check Portability Before You Count on Moving It
A generator may be described as portable and still be awkward to move without help, especially in higher-output classes. Look at the listed weight, wheel kit, handle design, and the route from storage to the place where it will run. Wheels help on smooth ground but do not make a heavy machine easy to lift into a vehicle or carry over steps. For camping and frequent transport, a compact inverter model can be more practical than choosing surplus capacity. For home backup, you may accept a larger unit if it can stay near its operating location. Match the carrying and setup demands to the people who will actually handle the generator.
Verify Connections and Home Backup Requirements
Before buying for home backup, identify whether you plan to plug in individual appliances or connect through a transfer switch installed for the purpose. A generator’s wattage is not enough if it lacks the outlets or connection method your setup requires. Never connect a portable generator directly to household wiring without an approved transfer arrangement; unsafe backfeeding can endanger utility workers and damage equipment. Check outlet types, voltage, breaker limits, and any required accessories with the manufacturer and a qualified electrician. RV buyers should verify the generator’s RV-ready connection against their specific setup. These compatibility checks can matter more than a small difference in advertised peak watts.
Account for Safe Placement, Sound, and Maintenance
Every fuel-burning portable generator produces carbon monoxide, so it must run outdoors, well away from doors, windows, and air intakes, following the manufacturer’s clearance guidance. Do not run it in a garage, shed, or other enclosed space, even with doors open. Noise matters too: an open-frame unit can be a poor fit for a campsite or close neighbors, while a quieter design may suit those settings better. Follow the manual’s oil, air-filter, fuel, and storage instructions, and plan periodic operation or care as the manufacturer directs. Buyers often focus on fuel flexibility but overlook where the generator can safely operate and how they will maintain it between emergencies. Safe placement and upkeep are part of choosing the right model, not afterthoughts.
Frequently Asked Questions
Is propane or gasoline the better fuel for a generator kept for emergencies?
Neither fuel is the right choice for every household. Propane can suit longer-term storage planning when you have approved cylinders, a safe storage location, and a generator rated for that fuel. Gasoline may be easier to use if you already have a reliable way to obtain fresh fuel, but stored gasoline needs careful handling and maintenance. A dual-fuel model offers flexibility, though it does not remove the need to store or source fuel safely. Decide which fuel you can realistically keep available and check the unit’s output and runtime data for that fuel.
Will a dual-fuel generator make the same power on propane as on gasoline?
Do not assume the output is identical. A dual-fuel generator may have different starting or running wattage ratings for each fuel, and those numbers determine which appliances it can support together. Check the manufacturer’s specifications for both fuels before sizing your setup. Leave headroom for motor startup loads, since a refrigerator or pump can need more power briefly than it uses while running. If your essential loads depend on a narrow wattage margin, choose based on the lower fuel-specific rating rather than the highest figure on the product page.
Should I choose an inverter generator or a higher-output conventional generator?
Choose an inverter design when portability, a more camping-friendly format, or powering electronics is a priority, while checking the manufacturer’s output specifications for your devices. A conventional high-output model is more likely to suit buyers who need to support several larger home loads, but it can be bulkier and less convenient to transport. Neither category automatically covers every use: compare running watts, startup capacity, outlet options, and sound information. Think about the largest load you truly need to operate, not every appliance in the house at once. If you need both high capacity and quiet operation, check the exact model rather than relying on category assumptions.
Can I connect a portable generator to my home during an outage?
You can power selected household circuits only through a properly installed transfer switch or another approved setup designed for the generator. Do not plug a generator into a wall outlet or connect it directly to home wiring, since backfeeding can create a serious hazard and damage equipment. Ask a qualified electrician to check the generator’s output, your planned loads, and the required connection equipment. If you plan to use extension cords for individual appliances, confirm they are suitable for the load and outdoor use. Also place the running generator outdoors at the clearances stated by the manufacturer because carbon monoxide can enter the home.
Does a tri-fuel generator make more sense than a dual-fuel model?
A tri-fuel model may be a better fit if you want another fuel option and can use its specified connection and supply arrangements. That extra flexibility can help when one fuel is unavailable, but it does not automatically mean higher output, easier handling, or simpler maintenance. Compare the fuel-specific ratings, setup requirements, and the fuels you can safely obtain before paying for a capability you may not use. A dual-fuel inverter may be a more practical choice for camping or electronics, while a tri-fuel conventional model may suit backup planning. Let your likely fuel access and load plan decide, not the number of fuel types alone.
Conclusion
For a balanced mix of manageable size, inverter design, and fuel flexibility, my best overall choice is the WEN DF360iX. Buyers focused on compact carrying and lighter loads should look first at the Westinghouse iGen2550DFc, while those needing substantial home backup should compare the Westinghouse WGen9500DF and DuroStar DS13000MX against their actual load plan. The best premium-style fuel-flexibility pick is the Generac GP9500E for buyers who have a real use for its three fuel options; its conventional design is not the choice for everyone. For a straightforward start in the category, the WEN DF360iX is also my best for beginners because it offers a less imposing starting point than the large backup units. The best value depends on your use: choose a smaller inverter when portability matters, or a higher-output model only when you need the capacity. Match fuel availability, rated output, safe connection needs, and handling demands before making the final choice.
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