Dual fuel inverter generators give you the option to run on gasoline or propane while producing inverter power suited to sensitive electronics. My best overall pick is the Westinghouse iGen12000DFc for buyers who need substantial output; the Champion 4000-Watt is a more manageable RV-oriented choice, while the WEN DF360iX favors compact, quieter-duty needs. The central tradeoff is straightforward: more output can power more equipment, but usually means a larger, heavier generator and greater fuel demands. Models in this roundup also vary in portability, available fuel choices, and how much capacity they offer for the intended use. Read on for the full comparison and guidance on matching a generator to your actual loads.
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Key Takeaways
- The Westinghouse iGen12000DFc and iGen12000TFc stand apart on output class; the tri-fuel iGen12000TFc adds natural gas flexibility, but neither is the natural choice for buyers who need easy portability.
- For RV-focused use, the Champion 4000-Watt offers a more targeted balance than the larger home-backup models; confirm the outlet and starting-watt requirements of your RV before choosing.
- The WEN DF360iX is the roundup’s compact-capacity pick, while the DF480iX and DF680iX step up the output range for buyers willing to accommodate a larger unit.
- Several midrange options cluster around 3,800–4,500 watts, including PowerSmart, ERAYAK, and BILT HARD models; their practical differences depend on portability, controls, and the load you plan to run.
- Tri-fuel models are a distinct alternative, not simply higher-output dual-fuel picks: the Westinghouse iGen8200TFc and iGen12000TFc can run on natural gas as well as gasoline and propane, which may matter when fuel access is part of the backup plan.
| PowerSmart 4400-Watt Dual-Fuel Portable Inverter Generator |  | Best for Balanced Home Backup | Fuel types: Gasoline and propane | Starting watts: 4,400 W gasoline; 4,000 W propane | Running watts: 3,600 W gasoline; 3,300 W propane | VIEW LATEST PRICE | See Our Full Breakdown |
| PowerSmart 3800-Watt Dual-Fuel Inverter Generator |  | Best Lightweight Pick | Fuel types: Gasoline and propane | Starting watts: 3,800 W gasoline; 3,500 W propane | Running watts: 3,300 W gasoline; 3,100 W propane | VIEW LATEST PRICE | See Our Full Breakdown |
| Westinghouse iGen12000TFc Tri-Fuel Portable Inverter Generator |  | Best Fuel Flexibility for Home Backup | Fuel types: Gasoline, propane, and natural gas | Peak output: 12,000 W gasoline; 11,000 W propane; 9,800 W natural gas | Running output: 9,000 W gasoline; 8,100 W propane; 7,200 W natural gas | VIEW LATEST PRICE | See Our Full Breakdown |
| Westinghouse iGen12000DFc Dual Fuel Portable Inverter Generator |  | Best High-Output Dual-Fuel Pick | Fuel types: Gasoline and propane | Peak output: 12,000 W gasoline; 11,000 W propane | Running output: 9,000 W gasoline; 8,100 W propane | VIEW LATEST PRICE | See Our Full Breakdown |
| Champion 4000-Watt Dual-Fuel RV-Ready Portable Inverter Generator |  | Best for RV Trips | Fuel types: Gasoline and propane | Starting watts: 4,000 W | Running watts: 3,000 W gasoline; 2,700 W propane | VIEW LATEST PRICE | See Our Full Breakdown |
| WEN DF480iX 4800-Watt Dual-Fuel Portable Inverter Generator |  | Best for Longer Propane Runtime | Engine displacement: 224 cc | Fuel types: Gasoline and propane (LPG) | Surge output: 4,800 W gasoline; 4,320 W propane | VIEW LATEST PRICE | See Our Full Breakdown |
| Westinghouse iGen4000DFc Dual Fuel Portable Inverter Generator |  | Best for Easy RV Operation | Peak wattage: 4,000 W | Fuel types: Gasoline or propane | Runtime: Up to 7 hours | VIEW LATEST PRICE | See Our Full Breakdown |
| WEN DF360iX Dual-Fuel 3600-Watt Portable Inverter Generator |  | Best Compact Pick | Fuel types: Gasoline and propane | Surge output: 3,600 W gasoline; 3,500 W propane | Engine displacement: 149 cc | VIEW LATEST PRICE | See Our Full Breakdown |
| PowerSmart 3800-Watt Dual-Fuel Inverter Generator |  | Best for Quiet, Light-Duty Backup | Fuel types: Gasoline and propane | Starting wattage: 3,800 W gasoline; 3,500 W propane | Running wattage: 3,300 W gasoline; 3,100 W propane | VIEW LATEST PRICE | See Our Full Breakdown |
| WEN DF680iX 6800-Watt Dual-Fuel Portable Inverter Generator |  | Best for High-Output 240-Volt Needs | Engine: 224 cc | Fuel types: Gasoline and propane | Output: 6,800 surge W and 5,100 rated W on gasoline; 6,000 surge W and 4,500 rated W on propane | VIEW LATEST PRICE | See Our Full Breakdown |
| ERAYAK 4500W Dual-Fuel Portable Inverter Generator |  | Best Compact RV Pick | Fuel: Gasoline and propane | Peak output: 4,500 W gasoline; 4,050 W propane | Fuel tank: 2.25 gallons | VIEW LATEST PRICE | See Our Full Breakdown |
| Westinghouse iGen5000DF Dual Fuel Portable Inverter Generator |  | Best for Easy Starts and Long Runs | Fuel: Gasoline and propane | Peak output: 5,000 W | Fuel tank: 3.4 gallons | VIEW LATEST PRICE | See Our Full Breakdown |
| AIVOLT 8000W Dual Fuel Inverter Generator |  | Best for Higher-Load Backup | Fuel: Gasoline and propane | Starting output: 8,000 W | Running output: 6,100 W | VIEW LATEST PRICE | See Our Full Breakdown |
| BILT HARD 4500W Dual-Fuel Portable Inverter Generator |  | Best for Parallel Expansion | Fuel: Gasoline or propane | Peak output: 4,500 W gasoline; 4,150 W propane | Fuel tank: 1.37 imperial gallons | VIEW LATEST PRICE | See Our Full Breakdown |
| Westinghouse iGen8200TFc Tri-Fuel Portable Inverter Generator |  | Best for Multi-Fuel Home Backup | Fuel types: Gasoline, propane, and natural gas | Peak output: 8,200 W gasoline; 7,380 W propane; 6,560 W natural gas | Running output: 6,600 W gasoline; 5,940 W propane; 5,280 W natural gas | VIEW LATEST PRICE | See Our Full Breakdown |
| dual fuel inverter generator | Runtime | Warranty | Fuel types | Noise level |
|---|---|---|---|---|
| PowerSmart 4400-Watt Dual-Fuel | Up to 8 hours on gasoline at 25% load; up to 24 hours on a 20 lb propane tank at 25% load | 2-year limited manufacturer warranty | Gasoline and propane | — |
| PowerSmart 3800-Watt Dual-Fuel | Up to 8 hours on gasoline at 25% load; up to 24 hours on a 20 lb propane tank | 2 years | Gasoline and propane | 59 dBA at 25% load in Eco Mode |
| Westinghouse iGen12000TFc Tri- | Up to 19 hours at 25% load | 3-year limited warranty | Gasoline, propane, and natural gas | As low as 64 dBA |
| Westinghouse iGen12000DFc Dual | Up to 19 hours at 25% load | 3-year limited warranty | Gasoline and propane | As low as 64 dBA |
| Champion 4000-Watt Dual-Fuel R | Up to 10 hours on gasoline; up to 25 hours on propane at 25% load | 3-year limited warranty with lifetime technical support | Gasoline and propane | 64 dBA from 23 ft |
| WEN DF480iX 4800-Watt Dual-Fue | Up to 7 hours at half load on gasoline; up to 20 hours at half load on a 20 lb LPG tank | 3-year limited warranty | Gasoline and propane (LPG) | 62 dB at quarter load |
| Westinghouse iGen4000DFc Dual | Up to 7 hours | 3-year limited service, labor, and parts coverage | Gasoline or propane | As low as 52 dBA |
| WEN DF360iX Dual-Fuel 3600-Wat | Up to 5 hours at half load; up to 14 hours on a 20 lb propane tank | 3-year limited warranty | Gasoline and propane | 65 dB at quarter load |
| PowerSmart 3800-Watt Dual-Fuel | Up to 8 hours at 25% load on gasoline; up to 24 hours on a 20 lb propane tank | 2 years | Gasoline and propane | 59 dBA in Eco Mode |
| WEN DF680iX 6800-Watt Dual-Fue | Up to 6.1 hours at half load on gasoline; up to 9 hours at half load on a 20 lb propane tank | 3-year limited warranty | Gasoline and propane | 64 dB at quarter load |
| ERAYAK 4500W Dual-Fuel Portabl | Up to 16 hours at 25% load on gasoline | 3-year limited | — | — |
| Westinghouse iGen5000DF Dual F | Up to 18 hours | 3-year limited | — | — |
| AIVOLT 8000W Dual Fuel Inverte | Up to 10 hours at 25% load | — | — | — |
| BILT HARD 4500W Dual-Fuel Port | 13 hours | — | — | — |
| Westinghouse iGen8200TFc Tri-F | Up to 17 hours at 25% load | — | Gasoline, propane, and natural gas | — |
More Details on Our Top Picks
PowerSmart 4400-Watt Dual-Fuel Portable Inverter Generator
The PowerSmart 4400 balances useful household capacity with a smaller footprint than the high-output Westinghouse iGen12000DFc. Its 3,600 running watts on gasoline can support several essentials, while less than 3% THD is suited to sensitive electronics. Propane stretches the stated runtime to 24 hours at 25% load with a 20-pound tank, which can be useful when gasoline is scarce, though its output drops to 3,300 running watts on propane. The 1.6-gallon gas tank is the main compromise: the up-to-eight-hour figure applies only at a light load, so heavier use means more frequent refueling. At 68 pounds, it is also less convenient to carry than the 50.7-pound PowerSmart 3800. I’d shortlist it for buyers who want more running capacity than that lighter model without moving to a large backup unit.
Pros:- 3,600 running watts on gasoline offers more capacity than the PowerSmart 3800
- Runs on gasoline or propane, with up to 24 hours listed on a 20-pound propane tank at 25% load
- Less than 3% THD suits sensitive electronics
- CO sensor, low-oil shutdown, overload protection, and digital display
Cons:- The 1.6-gallon gasoline tank is small, and the eight-hour figure is only at 25% load
- At 68 pounds, it is heavier than the PowerSmart 3800
- 120V output does not serve 240V appliances
Best for: Households needing midrange 120V backup for several essentials, with propane available as an alternate fuel.
Not ideal for: Buyers who need 240V appliances, extended gasoline operation between refills, or a lightweight generator to carry frequently.
- Fuel types:Gasoline and propane
- Starting watts:4,400 W gasoline; 4,000 W propane
- Running watts:3,600 W gasoline; 3,300 W propane
- Runtime:Up to 8 hours on gasoline at 25% load; up to 24 hours on a 20 lb propane tank at 25% load
- Gasoline tank:1.6 gallons
- Total harmonic distortion:Less than 3%
- Outlets:120V 30A L5-30R; 120V 20A 5-20R duplex; 12V 8A DC
- Weight:68 lb
- Warranty:2-year limited manufacturer warranty
Our verdict“Choose the PowerSmart 4400 if you want more 120V running capacity than a compact midrange unit and can accept frequent gasoline refills.”
PowerSmart 3800-Watt Dual-Fuel Inverter Generator
At 50.7 pounds, this PowerSmart is the most carry-friendly choice among the compact PowerSmart models here, making it a better fit for occasional loading and unloading than the 68-pound PowerSmart 4400. It still supplies 3,300 running watts on gasoline and 3,100 on propane, enough for a modest RV setup or selected household essentials, but it gives up some capacity to stay lighter. The stated 59 dBA at 25% load in Eco Mode is a useful clue for low-demand campsite use; it does not describe noise at heavier output. Both fuel runtime figures also use a 25% load benchmark, and the 1.3-gallon tank limits gasoline capacity. Its 120V-only output rules out 240V equipment, unlike the larger Westinghouse iGen12000DFc. For buyers prioritizing manageable weight over extra headroom, that tradeoff makes sense.
Pros:- 50.7-pound weight is easier to handle than the PowerSmart 4400
- Provides 3,300 running watts on gasoline and 3,100 on propane
- Listed at 59 dBA at 25% load in Eco Mode
- Includes CO and low-oil protection, plus AC, DC, and USB outlets
Cons:- 120V-only output cannot power 240V appliances
- The 1.3-gallon gasoline tank and eight-hour light-load runtime limit refueling intervals
- Lower output than the PowerSmart 4400
Best for: RV owners and campers who need dual-fuel flexibility, 120V output, and a generator they can move without a heavy-duty setup.
Not ideal for: Homeowners running 240V appliances or buyers who want more output headroom and longer gasoline intervals than the small tank allows.
- Fuel types:Gasoline and propane
- 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 in Eco Mode
- Runtime:Up to 8 hours on gasoline at 25% load; up to 24 hours on a 20 lb propane tank
- Gasoline tank:1.3 gallons
- Outlets:120V 30A L5-30R; 120V 20A 5-20R duplex; 12V 8A DC; dual 5V 2.1A USB
- Weight:50.7 lb
- Warranty:2 years
Our verdict“Pick this model if easier handling matters more than the additional running capacity offered by the PowerSmart 4400.”
Westinghouse iGen12000TFc Tri-Fuel Portable Inverter Generator
The iGen12000TFc is the lineup’s choice for buyers who want substantial backup output and a third fuel option, not a portable campsite companion. It runs on gasoline, propane, or natural gas, so a home with a natural-gas connection can avoid storing gasoline or swapping propane tanks during an outage. Its 9,000 running watts on gasoline and 120/240V output suit larger loads than the PowerSmart 4400, while under-3% THD supports sensitive electronics. Remote and electric start also make it easier to operate when the generator is positioned outside. The cost of that capacity is physical scale: its 457 cc engine and heavy-duty design are far less convenient to move than the Champion 4000. The up-to-19-hour runtime is rated at only 25% load, and output varies by fuel, so this is best for stationary backup planning rather than casual transport.
Pros:- Three fuel choices include natural gas, unlike the dual-fuel iGen12000DFc
- 9,000 running watts on gasoline with 120/240V output
- Less than 3% THD and transfer-switch-ready outlets support home backup and sensitive electronics
- Remote and electric start, plus up to 19 hours listed runtime at 25% load
Cons:- Large, heavy-duty design is less practical for frequent transport
- Running output changes substantially by fuel, falling to 7,200 watts on natural gas
- The 19-hour runtime is specified at 25% load, not full household demand
Best for: Homeowners seeking high-output 120/240V backup who can use natural gas and want gasoline and propane as alternatives.
Not ideal for: Campers, renters, or anyone needing a compact generator that one person can carry and reposition often.
- Fuel types:Gasoline, propane, and natural gas
- Peak output:12,000 W gasoline; 11,000 W propane; 9,800 W natural gas
- Running output:9,000 W gasoline; 8,100 W propane; 7,200 W natural gas
- Engine:457 cc, 4-stroke OHV
- Runtime:Up to 19 hours at 25% load
- Fuel tank:7.9 gallons
- Voltage and THD:120/240V; less than 3% THD
- Noise level:As low as 64 dBA
- Warranty:3-year limited warranty
Our verdict“Choose the iGen12000TFc for stationary home backup when natural-gas access and high 120/240V output matter more than portability.”
Westinghouse iGen12000DFc Dual Fuel Portable Inverter Generator
For buyers who need major backup capacity but do not need natural gas, the iGen12000DFc delivers the same stated gasoline peak and running output as the tri-fuel iGen12000TFc: 12,000 peak and 9,000 running watts. It also supplies 120/240V power, remote and electric start, and transfer-switch-ready outlets, giving it a much broader home-backup role than the 120V PowerSmart 4400. The key distinction within the Westinghouse pair is fuel choice: this model runs on gasoline or propane, while the TFc adds natural gas for homes connected to a line. That simpler fuel setup may suit buyers who already store gasoline or propane, but it sacrifices a convenient outage option. Less than 3% THD is suited to sensitive electronics; still, the 457 cc engine and 7.9-gallon tank make this a substantial machine rather than an easy carry-along. Its 19-hour figure is a light-load rating.
Pros:- 9,000 running watts on gasoline and 8,100 on propane
- 120/240V output and transfer-switch-ready outlets suit home backup
- Less than 3% THD, with remote and electric start
- Up to 19 hours listed runtime at 25% load
Cons:- Does not run on natural gas, unlike the iGen12000TFc
- Large engine and high-output design are awkward for casual transport
- Runtime and noise depend on load and operating conditions
Best for: Homeowners who need high-capacity 120/240V backup, transfer-switch-ready outlets, and a choice between gasoline and propane.
Not ideal for: Buyers with natural-gas access who want to avoid fuel storage, or campers seeking a generator that is easy to transport.
- Fuel types:Gasoline and propane
- Peak output:12,000 W gasoline; 11,000 W propane
- Running output:9,000 W gasoline; 8,100 W propane
- Engine:457 cc, 4-stroke OHV
- Runtime:Up to 19 hours at 25% load
- Fuel tank:7.9 gallons
- Voltage and THD:120/240V; less than 3% THD
- Noise level:As low as 64 dBA
- Warranty:3-year limited warranty
Our verdict“Choose this Westinghouse if you need substantial 120/240V backup on gasoline or propane and do not need the TFc’s natural-gas option.”
Champion 4000-Watt Dual-Fuel RV-Ready Portable Inverter Generator
The Champion is the most clearly RV-oriented option here: its 120V 25A TT-30R outlet connects with common RV setups, and its under-55-pound weight is easier to manage than the 68-pound PowerSmart 4400. It produces 3,000 running watts on gasoline, or 2,700 on propane, so it gives up some sustained capacity to the PowerSmart while listing longer light-load runtimes: up to 10 hours on gasoline and 25 on propane at 25% load. That makes propane attractive for a campsite where a suitable tank is already on hand, but neither runtime predicts performance under a heavy RV load. The CO Shield automatic shutoff adds a safety feature, and less than 3% THD is listed for clean power. The tradeoff is reduced output, especially on propane, and a parallel kit is sold separately if you later want to link another compatible unit.
Pros:- RV-ready 120V 25A TT-30R outlet
- Less than 55 pounds, lighter than the PowerSmart 4400
- Listed runtime reaches 10 hours on gasoline and 25 hours on propane at 25% load
- CO Shield automatic shutoff and less than 3% THD
Cons:- Running output falls to 2,700 watts on propane
- Parallel kit is sold separately
- Runtime figures apply at 25% load and do not indicate duration at higher demand
Best for: RV travelers who need a portable 120V generator with a TT-30R connection and the option to run on propane.
Not ideal for: Households needing 240V output or buyers whose appliances require more sustained wattage than 2,700 watts on propane.
- Fuel types:Gasoline and propane
- Starting watts:4,000 W
- Running watts:3,000 W gasoline; 2,700 W propane
- Runtime:Up to 10 hours on gasoline; up to 25 hours on propane at 25% load
- Noise level:64 dBA from 23 ft
- Engine:149 cc
- Outlets:120V 25A TT-30R; 120V 20A 5-20R duplex; 12V automotive-style; parallel outlets
- Weight:Less than 55 lb
- Warranty:3-year limited warranty with lifetime technical support
Our verdict“Pick the Champion for RV use when its TT-30R outlet, lighter carry weight, and propane runtime matter more than the PowerSmart 4400’s higher running output.”
WEN DF480iX 4800-Watt Dual-Fuel Portable Inverter Generator
The WEN DF480iX is a strong fit for buyers who want midrange output and fewer fuel stops when running on propane: it’s rated for up to 20 hours at half load with a 20-pound tank. That gives it a clear endurance advantage over the smaller WEN DF360iX, whose listed propane runtime is up to 14 hours. Electric start, recoil backup, and a telescoping handle with wheels also make it easier to operate and reposition than a basic pull-start unit. The tradeoff is that its gasoline tank holds just 1.9 gallons, and its propane surge output falls to 4,320 watts. It suits RV and backup use, but buyers needing 240-volt output should look at the WEN DF680iX instead.
Pros:- Runs on gasoline or propane, with up to 20 hours of listed runtime on a 20-pound propane tank at half load
- Electric start plus recoil backup provides a convenient alternative if the battery-start system is unavailable
- CO shutdown protection and fuel shutoff add safety and help manage fuel in storage
- Wheels and a telescoping handle simplify moving the generator
Cons:- Propane surge output is lower than gasoline output: 4,320 watts versus 4,800 watts
- The 1.9-gallon gasoline tank limits run time between refills
- Parallel connection kit is sold separately
Best for: RV owners and backup-power buyers who prefer propane and want extended operation at moderate loads.
Not ideal for: Buyers needing 240-volt power or frequent high-load gasoline operation; this model is 120V-only and has a 1.9-gallon tank.
- Engine displacement:224 cc
- Fuel types:Gasoline and propane (LPG)
- Surge output:4,800 W gasoline; 4,320 W propane
- Noise level:62 dB at quarter load
- Gasoline tank capacity:1.9 gallons
- Runtime:Up to 7 hours at half load on gasoline; up to 20 hours at half load on a 20 lb LPG tank
- Outlets:Four 120 V receptacles, one 120 V TT-30R RV receptacle, one 12 V DC receptacle, and two 5 V USB ports
- Starting system:Electric start with recoil backup
- Warranty:3-year limited warranty
Our verdict“Choose the DF480iX if long propane operation and wheeled portability matter more than 240-volt capability or a larger gasoline tank.”
Westinghouse iGen4000DFc Dual Fuel Portable Inverter Generator
The Westinghouse iGen4000DFc puts convenience at the center of its appeal. Its remote, electric, and recoil starting let RV users choose how to fire it up, while the digital display gives a quick view of operating information. The TT-30R outlet and less-than-3% THD make it a practical match for RV appliances and sensitive electronics. Compared with the WEN DF360iX, the Westinghouse adds remote starting and lists a lower minimum noise figure, but its 1.69-gallon tank supports only up to seven hours of runtime. That limitation matters during extended gasoline use, even if propane offers another fuel option. I’d rank it for setup convenience rather than endurance or maximum output; buyers with larger loads should compare it with the WEN DF480iX.
Pros:- Remote, electric, and recoil starting give buyers several ways to start the unit
- TT-30R RV outlet supports a straightforward 120-volt RV connection
- Less than 3% THD is suited to electronics and other sensitive equipment
- Low-oil and carbon monoxide shutdown protections are included
Cons:- Listed runtime is up to 7 hours with a relatively small 1.69-gallon gasoline tank
- The 4,000-watt peak output is below the WEN DF480iX’s 4,800-watt gasoline surge output
Best for: RV travelers who value remote starting, a built-in operating display, and an RV-ready outlet for 120-volt use.
Not ideal for: Campers seeking long gasoline intervals between refills or buyers who need greater output for multiple heavy loads.
- Peak wattage:4,000 W
- Fuel types:Gasoline or propane
- Runtime:Up to 7 hours
- Gas tank capacity:1.69 gallons
- Noise level:As low as 52 dBA
- Total harmonic distortion:Less than 3%
- Starting methods:Remote, electric, and recoil
- Warranty:3-year limited service, labor, and parts coverage
Our verdict“Pick the iGen4000DFc if remote starting and RV-friendly controls matter more than extended gasoline runtime or higher surge capacity.”
WEN DF360iX Dual-Fuel 3600-Watt Portable Inverter Generator
At 49 pounds, the WEN DF360iX is the easiest choice here for buyers who need dual-fuel flexibility in a relatively light package. Its 3,600-watt gasoline surge output and TT-30R connection cover modest camping and RV demands, while CO shutdown protection and fuel shutoff add useful safeguards. Against the Westinghouse iGen4000DFc, the DF360iX gives up output and remote starting, but its listed weight makes it a more manageable option to lift and stow. The main compromise is endurance: gasoline runtime is only up to five hours at half load, so extended use means refueling or switching to propane. I’d choose it for portability and straightforward power, not for running several demanding appliances at once.
Pros:- 49-pound weight is easier to lift and stow than the larger WEN DF480iX
- Gasoline and propane operation gives flexibility when one fuel is unavailable
- CO shutdown protection and fuel shutoff provide practical safety features
- Includes a TT-30R RV outlet, DC outlet, and USB ports
Cons:- Gasoline runtime is up to five hours at half load
- Lower surge output than the Westinghouse iGen4000DFc and the WEN DF480iX
- Parallel connection kit is sold separately
Best for: Campers and RV owners who need a lighter dual-fuel generator for moderate 120-volt loads and have limited storage space.
Not ideal for: Buyers planning long gasoline-powered outages or running multiple high-draw appliances; its listed half-load runtime is short and output is modest.
- Fuel types:Gasoline and propane
- Surge output:3,600 W gasoline; 3,500 W propane
- Engine displacement:149 cc
- Noise level:65 dB at quarter load
- Gasoline tank capacity:1.5 gallons
- Runtime:Up to 5 hours at half load; up to 14 hours on a 20 lb propane tank
- Weight:49 pounds
- Outlets:Two 120 V receptacles, one TT-30R RV receptacle, one 12 V DC receptacle, and two 5 V USB ports
- Warranty:3-year limited warranty
Our verdict“Choose the DF360iX when lighter weight and dual-fuel flexibility outweigh longer runtime and greater power capacity.”
PowerSmart 3800-Watt Dual-Fuel Inverter Generator
The PowerSmart 3800 stands out for a balance of moderate output and a 59 dBA Eco Mode noise figure. Its 3,300-watt gasoline running capacity can serve common essentials, while the L5-30R twist-lock outlet gives compatible equipment a more secure connection than a standard household receptacle. Compared with the WEN DF360iX, it lists longer gasoline runtime—up to eight hours, though at just 25% load—and adds overload and short-circuit protection. That runtime figure needs context: the small 1.3-gallon tank and light-load test condition don’t promise a full workday under heavier demand. Its two-year warranty is also shorter than the three-year coverage listed for the WEN models. This is a sensible pick for quieter, lighter-duty use, not sustained high loads.
Pros:- 59 dBA Eco Mode noise figure suits quieter campsites and residential backup use
- Provides 3,300 running watts on gasoline and 3,100 on propane
- L5-30R twist-lock, household, DC, and USB outlets cover varied connections
- Includes carbon monoxide, overload, short-circuit, and low-oil protections
Cons:- The 1.3-gallon gasoline tank is small, and the eight-hour runtime is listed at only 25% load
- Two-year warranty is shorter than the three-year warranties listed for the WEN DF360iX and DF480iX
- At 50.7 pounds, it is heavier than the 49-pound WEN DF360iX despite offering a similar output class
Best for: Owners seeking a relatively quiet generator for light home backup, camping, or compatible equipment using a twist-lock connection.
Not ideal for: Buyers needing long runtime under heavy loads, a larger fuel tank, or warranty coverage comparable to the three-year WEN models.
- Fuel types:Gasoline and propane
- Starting wattage:3,800 W gasoline; 3,500 W propane
- Running wattage:3,300 W gasoline; 3,100 W propane
- Runtime:Up to 8 hours at 25% load on gasoline; up to 24 hours on a 20 lb propane tank
- Gas tank capacity:1.3 gallons
- Noise level:59 dBA in Eco Mode
- Engine:4-stroke, 149 cc
- Weight:50.7 pounds
- Warranty:2 years
Our verdict“Choose the PowerSmart 3800 for quieter light-load operation and its twist-lock outlet, but look elsewhere for long heavy-load runs.”
WEN DF680iX 6800-Watt Dual-Fuel Portable Inverter Generator
The WEN DF680iX is the capacity pick in this group, pairing 5,100 rated watts on gasoline with an L14-30R 120V/240V outlet. That makes it a better match than the WEN DF480iX for buyers with 240-volt equipment or a broader home-backup load, and its low THD figures—under 0.3% at no load and under 1.2% at full load—are a strong fit for sensitive electronics. Electric start, eco mode, CO shutdown, and a wheeled frame help make its larger output more manageable. The cost of that capacity is reduced propane output and limited runtime: the listing gives up to nine hours at half load on a 20-pound tank, versus the DF480iX’s up to 20 hours at half load on the same tank. It is also the heaviest-duty choice here, not the compact one.
Pros:- 5,100 rated watts on gasoline provide substantially more running capacity than the WEN DF480iX
- L14-30R 120V/240V outlet supports compatible 240-volt equipment
- Low listed THD supports use with sensitive electronics
- Electric start, eco mode, wheels, telescoping handle, and safety shutdown features improve day-to-day usability
Cons:- Propane rated output drops to 4,500 watts, below its gasoline rating
- Listed gasoline runtime is up to 6.1 hours at half load, and propane runtime is up to 9 hours at half load
- 240V parallel connection kit is sold separately
Best for: Homeowners and RV users who need 120/240-volt output, higher running capacity, and clean inverter power for mixed loads.
Not ideal for: Campers prioritizing low weight, quiet operation, or long propane runtime; this higher-output model lists only up to nine hours at half load on a 20-pound tank.
- Engine:224 cc
- Fuel types:Gasoline and propane
- Output:6,800 surge W and 5,100 rated W on gasoline; 6,000 surge W and 4,500 rated W on propane
- Noise level:64 dB at quarter load
- Gasoline tank capacity:2.9 gallons
- Runtime:Up to 6.1 hours at half load on gasoline; up to 9 hours at half load on a 20 lb propane tank
- Total harmonic distortion:Under 0.3% at no load; under 1.2% at full load
- Receptacles:One L14-30R 120V/240V, two 120V three-prong, one TT-30R RV, one 12V DC, and two 5V USB
- Warranty:3-year limited warranty
Our verdict“Choose the DF680iX for higher running capacity and 120/240-volt output, not for compact transport or extended propane runtime.”
ERAYAK 4500W Dual-Fuel Portable Inverter Generator
I’d shortlist the ERAYAK for RV owners who want a 30A connection without moving up to a much heavier generator. At 54 pounds, it is easier to handle than the 57.7-pound BILT HARD 4500W, while adding USB-A and USB-C ports for charging small devices. Its 3,500-watt rated gasoline output suits common camping loads, but the 4,500-watt peak figure is not continuous power, so buyers should size appliances around the rated output. The listed 16-hour runtime applies only at 25% load, and refueling requires shutting the unit down and letting it cool. Automatic fuel switching and a CO shutdown sensor add practical safeguards, though this is a compact-load choice, not a substitute for a high-output home backup unit.
Pros:- 54-pound weight is manageable for a portable generator with an RV outlet.
- 30A L5-30P outlet supports compatible RV connections.
- USB-A and USB-C ports allow direct charging of small devices.
- CO sensor with shutdown and circuit-breaker protection add safety measures.
Cons:- 3,500 watts is the rated gasoline output; 4,500 watts is peak power.
- The 16-hour runtime claim is limited to 25% load.
- Gasoline must not be added while the generator is running or hot.
Best for: RV owners and campers who want a relatively light generator with a 30A outlet and USB-C charging.
Not ideal for: Buyers needing sustained high wattage for several large household loads, or anyone expecting 16 hours of runtime at heavy output.
- Fuel:Gasoline and propane
- Peak output:4,500 W gasoline; 4,050 W propane
- Fuel tank:2.25 gallons
- Runtime:Up to 16 hours at 25% load on gasoline
- Noise:58 dBA at 23 feet, quarter load
- Weight:54 lbs
- Outlets:Two 120V/20A outlets, one 30A L5-30P RV outlet, USB-A, and USB-C
- Warranty:3-year limited
Our verdict“Choose the ERAYAK if low carry weight and RV-ready connections matter more than the greater output of larger home-backup models.”
Westinghouse iGen5000DF Dual Fuel Portable Inverter Generator
The iGen5000DF is the convenience-focused middle ground here: it offers remote, electric, and recoil starting, plus wheels and an extendable handle, so setup is less demanding than with a basic pull-start portable unit. Its 3.4-gallon tank is paired with a listed up-to-18-hour runtime, giving it a longer stated run window than the ERAYAK 4500W, though that figure depends on load. Less than 3% THD is a useful spec for electronics, and the TT-30R outlet suits RV use. The tradeoff is output: 5,000 peak watts does not tell you the rated capacity, which is not supplied here, and this model remains below the AIVOLT 8000W for larger simultaneous loads. I’d favor it for moderate backup or camping where easy starting matters more than maximum power.
Pros:- Remote, electric, and recoil starting give buyers several ways to start the unit.
- Up to 18 hours of runtime is listed with its 3.4-gallon gasoline tank.
- TT-30R RV, household, and USB outlets cover common portable uses.
- Less than 3% THD is suited to sensitive electronics.
Cons:- The supplied specifications list peak wattage but not rated wattage.
- The 18-hour runtime is an upper figure and will vary with load.
- Its 5,000-watt peak capacity is below the AIVOLT 8000W and other large backup choices.
Best for: Campers and homeowners who want remote or electric starting, RV connectivity, and a stated long gasoline run window.
Not ideal for: Buyers who need clearly specified high continuous output for multiple large appliances; the listed peak figure alone does not establish that capacity.
- Fuel:Gasoline and propane
- Peak output:5,000 W
- Fuel tank:3.4 gallons
- Runtime:Up to 18 hours
- Noise:As low as 52 dBA
- Voltage:120 V
- RV outlet:TT-30R, 30A
- Starting methods:Remote, electric, and recoil
- Warranty:3-year limited
Our verdict“Pick the iGen5000DF for easier starting and a long stated run window, not for maximum household backup capacity.”
AIVOLT 8000W Dual Fuel Inverter Generator
Among the dual-fuel options in this batch, the AIVOLT is the clear step up when running wattage matters more than easy lifting. Its 6,100-watt running output and 120V/240V capability put it well above the ERAYAK 4500W and BILT HARD 4500W for supporting larger or more numerous loads. That added capacity comes with a major portability cost: at 129 pounds, this is a wheeled, telescopic-handle machine rather than a generator most people will carry. The 3.6-gallon tank is listed for up to 10 hours at 25% load, so the runtime claim should not be read as a full-load estimate. Electric start and CO shutdown add convenience and protection, but the supplied outlet count is only four, making outlet layout worth checking against the equipment you plan to power.
Pros:- 6,100 watts of running output provides substantially more capacity than the 4500W-class options here.
- 120V/240V output can suit compatible household backup needs.
- Electric start avoids relying on a recoil pull.
- CO sensor and low-oil shutdown provide automatic safety protections.
Cons:- At 129 pounds, it is far less portable than the ERAYAK or BILT HARD.
- Up to 10 hours is specified only at 25% load.
- Four outlets may limit direct connections for buyers with several devices.
Best for: Homeowners who need 120V/240V output and higher running capacity for backup loads, with wheels available for repositioning.
Not ideal for: Campers or solo users who need a light generator to lift into a vehicle, or buyers seeking a long stated runtime under heavy load.
- Fuel:Gasoline and propane
- Starting output:8,000 W
- Running output:6,100 W
- Voltage:120V/240V
- Engine:322cc 4-stroke OHV
- Fuel tank:3.6 gallons
- Runtime:Up to 10 hours at 25% load
- Noise:62 dBA at 23 feet
- Weight:129 lbs
Our verdict“Choose the AIVOLT when higher running output and 120V/240V capability outweigh the burden of transporting a 129-pound generator.”
BILT HARD 4500W Dual-Fuel Portable Inverter Generator
The BILT HARD makes the most sense for buyers who want a 4500W-class inverter with parallel capability as a future expansion path. Its less-than-3% THD rating, CO shutdown, TT-30R RV outlet, USB ports, and 12V DC output give it a broader connection mix than a bare-bones portable generator. Compared with the ERAYAK 4500W, it is slightly heavier at 57.7 pounds and provides a stated 13-hour runtime, but its parallel feature gives it a distinct upgrade option; the kit is sold separately. The output figures also need careful reading: 4,500 watts is peak gasoline power, while rated gasoline output is 3,500 watts. That makes this a moderate-load choice rather than a high-capacity home backup unit. Its 1.37-imperial-gallon tank and runtime listing deserve attention if you expect long operation between refills.
Pros:- Less than 3% THD is suitable for sensitive electronics.
- Includes TT-30R, duplex AC, USB, and 12V DC connections.
- Parallel capability offers a way to expand output with compatible equipment.
- CO sensor shuts the generator down automatically when unsafe levels are detected.
Cons:- The parallel kit is sold separately.
- 3,500 watts is rated gasoline output, below the 4,500-watt peak figure.
- The 13-hour runtime figure needs to be weighed against load and its 1.37-imperial-gallon tank.
Best for: RV users and campers who want clean inverter output, several connection types, and the option to add parallel capacity later.
Not ideal for: Buyers who need high continuous output out of the box or who want parallel operation without purchasing a separate kit.
- Fuel:Gasoline or propane
- Peak output:4,500 W gasoline; 4,150 W propane
- Fuel tank:1.37 imperial gallons
- Runtime:13 hours
- Noise:58 dBA at 23 feet
- THD:Less than 3%
- Weight:57.7 lbs
- Outlets:120V 20A duplex, 120V 30A TT-30R, dual USB, and 12V 8A DC
Our verdict“Choose the BILT HARD if parallel expansion and varied ports are priorities, but skip it if you need more than 3,500 watts of rated gasoline output now.”
Westinghouse iGen8200TFc Tri-Fuel Portable Inverter Generator
The iGen8200TFc is the most flexible fuel choice in this group: it accepts gasoline, propane, and natural gas, which can matter when fuel availability changes or a home already has a natural-gas connection. Its 6,600-watt gasoline running output exceeds the AIVOLT 8000W’s listed 6,100 watts, and the 50A outlet supports transfer-switch-ready backup setups. That extra capacity and fuel choice come with tradeoffs: the iGen8200TFc is tri-fuel rather than dual-fuel, and output drops to 5,940 watts on propane and 5,280 watts on natural gas. Its 17-hour runtime applies at 25% load, not full demand. Less than 3% THD, remote and electric start, and a CO sensor round out a capable package, but buyers should size loads using the figures for the fuel they expect to use.
Pros:- Three fuel choices offer more supply flexibility than dual-fuel models such as the AIVOLT.
- 6,600 watts of gasoline running output supports larger backup loads.
- 50A 14-50R outlet is suited to compatible transfer-switch-ready setups.
- Less than 3% THD and remote/electric starting add useful electronics support and convenience.
Cons:- Running output falls to 5,940 watts on propane and 5,280 watts on natural gas.
- The 17-hour runtime is listed only at 25% load.
- Its tri-fuel design may be unnecessary for buyers who only need gasoline and propane.
Best for: Homeowners seeking inverter-based backup with a 50A connection and the ability to run on gasoline, propane, or natural gas.
Not ideal for: Buyers set on a strictly dual-fuel model, or those who need gasoline-level output while using propane or natural gas.
- Fuel types:Gasoline, propane, and natural gas
- Peak output:8,200 W gasoline; 7,380 W propane; 6,560 W natural gas
- Running output:6,600 W gasoline; 5,940 W propane; 5,280 W natural gas
- Engine:298cc 4-stroke OHV
- Fuel tank:3.9 gallons
- Runtime:Up to 17 hours at 25% load
- Voltage:120/240 V
- THD:Less than 3%
- Outlets:14-50R 50A, TT-30R 30A, and GFCI 5-20R 20A duplex
Our verdict“Pick the iGen8200TFc for flexible fuel sourcing and substantial home-backup output, provided its lower propane and natural-gas ratings meet your load needs.”
How We Picked
I ranked these dual fuel inverter generators around the decisions buyers actually face: how much power they need, whether the unit suits RV or home-backup use, and how practical it is to move, store, and operate. I also weighed fuel flexibility, inverter output, usability, and the likely burden of maintenance and fuel planning. A high wattage figure alone did not earn a higher position; a generator that is mismatched to a buyer’s loads or too cumbersome for the intended job is a weaker recommendation.
The order reflects versatility and fit across common use cases, with specialized models placed where their particular strengths matter most. I distinguish dual-fuel units from the two tri-fuel Westinghouse models because natural-gas capability can be valuable, but it does not make those generators the best fit for every buyer. Similar wattage claims across brands do not establish equal runtime, noise, portability, or outlet compatibility, so buyers should verify each model’s specifications and intended connections before purchase.
| dual fuel inverter generator | Fuel types |
|---|---|
| PowerSmart 4400-Watt Dual-Fuel | Gasoline and propane |
| PowerSmart 3800-Watt Dual-Fuel | Gasoline and propane |
| Westinghouse iGen12000TFc Tri- | Gasoline, propane, and natural gas |
| Westinghouse iGen12000DFc Dual | Gasoline and propane |
| Champion 4000-Watt Dual-Fuel R | Gasoline and propane |
| WEN DF480iX 4800-Watt Dual-Fue | Gasoline and propane (LPG) |
| Westinghouse iGen4000DFc Dual | Gasoline or propane |
| WEN DF360iX Dual-Fuel 3600-Wat | Gasoline and propane |
| PowerSmart 3800-Watt Dual-Fuel | Gasoline and propane |
| WEN DF680iX 6800-Watt Dual-Fue | Gasoline and propane |
| ERAYAK 4500W Dual-Fuel Portabl | — |
| Westinghouse iGen5000DF Dual F | — |
| AIVOLT 8000W Dual Fuel Inverte | — |
| BILT HARD 4500W Dual-Fuel Port | — |
| Westinghouse iGen8200TFc Tri-F | Gasoline, propane, and natural gas |
Factors to Consider When Choosing Dual Fuel Inverter Generators
Before choosing by wattage or fuel type, I would start with the equipment you need to run and the conditions where the generator will operate. A generator that suits an RV weekend may be a poor fit for home backup, even when both use inverter technology and offer propane. These factors help narrow the field without assuming that the biggest model is the safest choice.
Size for Running Loads and Startup Surges
List the appliances you may run at the same time, then separate their running watts from their startup demands. Motors in refrigerators, pumps, and air conditioners can briefly require more power than their normal draw, so a generator that barely matches the total running load may trip when equipment starts. Avoid adding every appliance’s nameplate maximum if you will never operate them together; instead, plan realistic combinations and leave capacity for startup surges. Check both gasoline and propane output figures, since available power may differ by fuel. If you expect to add equipment later, a modest capacity margin can be more useful than buying a much larger, heavier unit now.
Choose Fuel Flexibility Based on Access
Gasoline and propane solve different storage and availability problems, so dual fuel is most useful when you can plan for both. Gasoline is widely available but needs careful storage and rotation; propane stores well in approved cylinders, though supply can be constrained during severe weather. Tri-fuel models add natural gas, which may support longer stationary use when a suitable connection is available, but they still depend on the home’s gas service and proper installation. Do not assume that fuel options deliver identical wattage or runtime. Review the model’s output and connection requirements for each fuel, and make a realistic backup plan rather than relying on a single source.
Match Portability to the Place You Will Use It
A generator can be described as portable and still be awkward to lift, load, or move over uneven ground. Think through the full route from storage to use: stairs, vehicle loading, campsite space, and whether another person will help. Larger units such as the high-output Westinghouse models are better suited to planned stationary use than frequent solo transport, while smaller-capacity options trade some power for a more manageable footprint. Wheels and handles help with rolling but do not make a heavy generator easy to lift into a truck. Check the listed weight and dimensions, and consider storage space, ventilation, and safe placement before deciding.
Check RV and Home Connections Before Buying
Wattage does not guarantee compatibility with an RV inlet, transfer switch, or the appliances you intend to power. Confirm outlet types, amperage, grounding requirements, and whether the generator supports the connection method your setup needs. For an RV, compare the generator’s output with the air conditioner’s startup demand and verify that the required adapter or cable is rated for the load. For home backup, use a properly installed transfer switch or interlock rather than feeding power through a household outlet. A few minutes spent checking connections can prevent a generator from being powerful on paper but unsuitable for the equipment it is meant to run.
Compare Runtime, Noise, and Maintenance as a Package
Published runtime depends on fuel, tank or cylinder size, and electrical load, so a single runtime figure does not predict how often you will refuel during your use. Look for the conditions behind the estimate and compare models at similar loads when possible. Inverter technology can help a generator adjust output to demand, but it does not make every model equally quiet; campsite rules and neighbor proximity still matter. Oil checks, scheduled service, fuel handling, and exercise runs also affect how ready a unit will be after storage. Buyers who value low-effort ownership should favor clear maintenance guidance and controls they can operate confidently, rather than focusing on output alone.
Pay More Only for Capacity or Flexibility You Will Use
A larger generator can cover more simultaneous loads, but the extra capacity brings more bulk, storage demands, and fuel planning. A tri-fuel model may justify its added flexibility for a household with a dependable natural-gas connection, while an RV owner who only needs a defined set of appliances may gain little from that feature. Smaller units can be a better match for occasional essentials, provided they handle startup loads and the intended connection. Compare the full equipment needs, not just the advertised wattage or the number of fuel types. The right step up is the one that solves a real constraint in your plan, not simply the one with the largest specification.
Frequently Asked Questions
Should I choose a tri-fuel generator instead of a dual-fuel model?
Choose a tri-fuel unit when access to a compatible natural-gas connection is part of your backup plan and you value another fuel source. The Westinghouse iGen12000TFc and iGen8200TFc add that option to gasoline and propane, but the extra fuel choice does not automatically make them better for RV travel or portable use. Check the output available on natural gas, connection requirements, and whether the generator is intended to remain stationary. If you will rely only on gasoline and propane, a dual-fuel model may meet your needs with less emphasis on a feature you will not use. Compare the practical setup, not just the number of fuel types.
How much generator output do I need for an RV air conditioner?
Start with the air conditioner’s running wattage and its startup requirement, then add the other loads you plan to operate at the same time. The air conditioner’s nameplate or manufacturer documentation is a better guide than assuming every unit has the same demand. Check the generator’s output on your chosen fuel and confirm that its outlets match the RV’s power connection. A model described as RV-ready may still need to be checked against your specific inlet, cable, and appliance combination. If the generator will also run a microwave or other high-draw appliance, plan which devices can operate together.
Can a dual fuel inverter generator power sensitive electronics?
Inverter generators are designed to supply cleaner, more stable power than many conventional generators, which makes them a common choice for electronics. Still, confirm the specific model’s electrical specifications and follow the device makers’ guidance rather than treating the inverter label as a universal guarantee. Use properly rated cords, avoid overloading the generator, and keep the unit dry and ventilated. For sensitive equipment, a surge protector or suitable uninterruptible power supply can add another layer of protection. The condition of the generator and the quality of the electrical setup matter along with the generator type.
Is propane a better backup fuel than gasoline?
Neither fuel is best for every household: propane is convenient to store for longer periods, while gasoline is often easier to obtain quickly and can provide stronger output on some models. Runtime and wattage depend on the generator and its load, so check the manufacturer’s figures for each fuel rather than assuming they match. A propane plan also depends on having enough compatible cylinders and a safe way to store them. Gasoline requires suitable storage and periodic attention to fuel condition. For outage readiness, keeping access to more than one fuel source can reduce dependence on a single supply route.
Can I connect a portable generator directly to my home wiring?
No. Do not connect a portable generator to household wiring through a wall outlet or an improvised cable; that can create a serious backfeed hazard. Home circuits should be powered through a properly installed transfer switch or an approved interlock, handled by a qualified electrician. Confirm that the generator’s output and connection type fit the installed equipment before an outage. You will also need to operate the generator outdoors, away from doors, windows, and vents, because exhaust contains carbon monoxide. Follow the manual and local electrical requirements for setup and operation.
Conclusion
For the broadest high-output fit, I would start with the Westinghouse iGen12000DFc as the best overall pick, while choosing the iGen12000TFc as the premium option if natural-gas access is part of the plan. Buyers looking for value should compare the PowerSmart 3800-Watt and other midrange models against their actual load list rather than paying for unused capacity. The Champion 4000-Watt is my RV-focused choice, and the WEN DF360iX makes more sense for buyers who prioritize a smaller-capacity option over broad whole-home coverage. Beginners should favor the generator whose controls, connections, and maintenance instructions fit their setup; no single wattage class is automatically easiest. Match the output to startup loads, confirm the connections, and select gasoline, propane, or tri-fuel capability based on fuel you can realistically access.
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