10 Best Dual Fuel Generators Review & Buying Guide 2025
Need reliable backup power that offers fuel flexibility? Our guide to the best-dual-fuel-generators provides peak performance and peace of mind during any outage.
The challenge of power outages, whether from severe weather or grid issues, demands a flexible and powerful solution. That’s where a dual fuel generator shines, giving you the critical option of running on either gasoline or propane (LPG). This fuel versatility not only increases your run time but also helps you manage supply chain disruptions. In addition, modern options prioritize convenience, featuring electric start systems, quiet operation, and RV-ready outlets. We’ve thoroughly reviewed models that stand out for their reliability, wattage, and safety features like CO Shield technology, ensuring you find a unit that can handle everything from essential home appliances to heavy-duty tools.
Choosing the right generator involves balancing power output, noise levels, and portability—especially if you plan on using it for camping or tailgating, as well as home backup. Moreover, critical features like inverter technology are essential for safely powering sensitive electronics. Ultimately, our in-depth analysis of the top generators simplifies your decision, helping you invest confidently. Let’s dive into the detailed reviews of the 10 Best Dual Fuel Generators to ensure your home or RV stays powered under any circumstances.
Top 5 Best Dual Fuel Generators
10 Best Dual Fuel Generators Review
1. Westinghouse 12500 Peak Watt Dual Fuel Home Backup Portable Generator
The Westinghouse 12500 Peak Watt Dual Fuel Generator is built for homeowners who require serious power for whole-home backup during extended outages. With 9500 running watts on gasoline and 8500 on propane, this unit can reliably run essential appliances, the HVAC system, and more. This model is perfect for emergency preparedness, offering the flexibility of two fuel sources and the convenience of a remote electric start key fob. Furthermore, its heavy-duty 457cc OHV engine, complete with a cast iron sleeve, guarantees both durability and long-term reliability.
In terms of performance, the generator features a transfer switch ready L14-30R outlet and a 50A RV-ready outlet, making installation seamless for home integration or large RV trips. The included CO Sensor provides vital safety protection by automatically shutting down the unit if harmful carbon monoxide levels are detected. Next, while the unit is large and heavy at 225.5 pounds, its robust wheel kit helps manage portability. A minor drawback, however, is that while it offers high power, it is a traditional generator and not as quiet as an inverter model.
Overall, this is one of the Best Dual Fuel Generators for those prioritizing maximum power output and home security. For buyers who need to power an entire house, including high-amperage appliances, this Westinghouse unit is a top-tier choice. We highly recommend this powerful unit to any homeowner looking for uncompromised backup. With its comprehensive feature set, it provides peace of mind that few other portable units can match.
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2. WEN Quiet 6800-Watt Dual Fuel RV-Ready Electric Start Portable Inverter Generator (DF680iX)
The WEN DF680iX positions itself as one of the Best Dual Fuel Generators combining high power with inverter technology. It delivers 6800 surge watts on gas and 6000 on propane, which is sufficient for many home essentials, a travel trailer, or even Level 1 EV charging. It is specifically designed for the RV lifestyle, featuring a dedicated TT-30R receptacle and RV-ready connectivity. Furthermore, its quiet operation is a major selling point, making it excellent for noise-sensitive environments like campgrounds or neighborhoods.
A key feature of the WEN DF680iX is its bonded-neutral 240V configuration, which uniquely supports low-power Level 2 charging for electric vehicles, expanding its utility beyond standard backup. The inclusion of the WEN Watchdog CO Shutdown Sensor enhances safety for the user and family. In addition, the fuel shutoff feature is crucial for limiting carburetor maintenance and maximizing the generator’s lifespan. However, while powerful for an inverter, its 5100 running watts on gas may fall short for running two major appliances simultaneously.
This unit is an ideal choice for the user seeking a powerful inverter generator that balances quiet performance and fuel flexibility for a great camping experience. It’s especially appealing to RV owners or those with electric vehicles who need versatile, clean power. The generator’s relatively light weight (99.2 pounds) and telescoping handle make it easier to maneuver than heavier conventional models. This model of Best Dual Fuel Generators represents excellent value in the mid-range power category, offering clean, stable power for sensitive electronics.
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3. DuroMax XP13000EH 13,000-Watt Dual Fuel Portable Generator
The DuroMax XP13000EH is an absolute powerhouse, making it one of the most compelling Best Dual Fuel Generators for serious home backup. Boasting 13,000 starting watts, this generator’s DuroMax engine is designed for high performance, capable of keeping your entire home operational during a major power outage. The generator’s dual fuel capability offers essential flexibility, enabling you to switch fuel types instantly via the front-facing interface. This unit is explicitly built to be transfer switch ready with a heavy-duty 50-amp outlet, facilitating seamless integration with your home’s electrical system.
Next, the heavy-duty all-metal frame ensures exceptional durability, built to withstand severe weather and long-term use—there are absolutely no plastic parts on the power panel. Its performance is enhanced by the MX2 technology, which allows you to draw power from both the 120V and 240V receptacles simultaneously, maximizing its utility. The electric start and no-flat tires contribute significantly to ease of use and portability, considering its 234-pound weight. The inclusion of a CO Sensor is a critical safety feature that protects the operator and family from harmful emissions.
This DuroMax model is the ideal choice for homeowners who simply cannot compromise on power. It is specifically aimed at those who need to run a full suite of household appliances simultaneously, including air conditioners and well pumps. Furthermore, its rugged construction and whole-home backup capability make it stand out among the Best Dual Fuel Generators. While it is a non-inverter model, its immense power and robust features justify the investment for reliable emergency power.
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4. Westinghouse 5000 Peak Watt Super Quiet Dual Fuel Portable Inverter Generator
The Westinghouse 5000 Peak Watt Inverter is an exceptional choice for those who need a balance of power, quietness, and fuel efficiency. Delivering 5000 peak watts on gas and featuring inverter technology, it provides clean power with less than 3% THD, making it safe for all sensitive electronics. Its super quiet operation, rated as low as 52 dBA, is a game-changer, making it one of the quietest and Best Dual Fuel Generators available. This versatility makes it ideal for everything from home essentials to RV and travel trailer use.
Performance-wise, the generator excels with an impressive run time of up to 18 hours on a 3.4-gallon gas tank, maximized by its Economy Mode. The convenience of the remote start key fob, electric, and recoil start options provides flexible startup under various conditions. Furthermore, the unit features an RV-Ready TT-30R 30 Amp outlet and is parallel capable, allowing you to double your power output by linking it with another compatible Westinghouse inverter. The LED Data Center is a helpful addition, displaying fuel level, power output, and remaining run time.
This generator is best suited for RV owners, campers, or homeowners looking for efficient and quiet backup for essential circuits. It provides enough power for a few major appliances and electronics without the high noise levels of a conventional unit. Although the initial cost is higher than some non-inverter models, the combination of super quiet operation, fuel efficiency, and clean power makes it a smart long-term investment. This is a powerful contender among the best-dual-fuel-generators in the mid-wattage inverter class.
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5. WEN 4,750-Watt 120V/240V Dual Fuel Portable Generator (DF475T)
The WEN DF475T is designed as a rugged, budget-friendly option, providing 4750 surge watts on gas and 4350 on propane. Its main strength lies in its versatile voltage output, allowing you to switch easily between 120V and 240V, making it perfect for powering a transfer switch for essential home circuits or running heavy-duty tools. This dual fuel capability, coupled with the electric start feature, offers exceptional value in a mid-size portable unit. The 4-gallon fuel tank delivers a decent run time of up to 11 hours at half load, minimizing the need for constant refueling.
Functionally, the generator is equipped with a range of outlets, including a 120V/240V NEMA 30A twist lock ($\text{L14-30R}$), two 120V GFCI outlets, and a 12V DC plug. The ability to utilize 240V power is a critical differentiator for running larger pumps or heaters. Next, despite being a traditional generator, the 224cc 4-stroke OHV engine provides reliable power and is built for durability. A separate option includes a CO Sensor for enhanced safety, though this base model lacks that crucial feature. It is relatively easy to move, coming in at just under 106 pounds with a wheel and handle kit.
This WEN generator is best for buyers who need the raw power of a conventional generator and the 240V capability for home backup or job site use, but who are also operating on a tight budget. It’s an effective, no-frills entry into the world of Best Dual Fuel Generators. While it’s louder than an inverter model and doesn’t produce ultra-clean power, its reliable engine and fuel versatility make it a practical emergency option. We consider it one of the best-dual-fuel-generators for those prioritizing high running wattage and low cost over quiet operation.
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6. Westinghouse 4000 Peak Watt Super Quiet Dual Fuel Portable Inverter Generator
The Westinghouse 4000-Watt Inverter is a top contender among the Best Dual Fuel Generators for portability and noise reduction. Offering 4000 peak watts on gas and 3300 running watts, it delivers clean power (less than 3% THD) suitable for even the most sensitive electronics. Weighing just 62.8 pounds, it is remarkably lightweight, making it ideal for frequent moves, camping, or RV-Ready travel. Its exceptionally low noise output of 52 dBA is comparable to a normal conversation, ensuring it won’t disrupt your surroundings.
This model is packed with premium features including remote start capability via a key fob, electric start, and a helpful CO Sensor for automatic shutdown protection. In addition, its compact size and fuel-efficient design allow for up to 7 hours of run time on a small 1.69-gallon gas tank. Furthermore, the generator is parallel capable, meaning you can effortlessly connect it with a second unit to double your power output when needed for a larger $\text{RV}$ or home essentials. The LED data center constantly monitors key metrics like fuel level and run time.
We recommend this Westinghouse inverter to campers, tailgaters, and $\text{RV}$ owners looking for the quietest, most portable power solution. It perfectly balances decent power output with maximum convenience and safety features. While its run time is shorter than models with larger fuel tanks, its ability to run cleanly and quietly, coupled with the dual fuel flexibility, solidifies its position as one of the best-dual-fuel-generators in its class.
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7. Champion Power Equipment 4750-Watt Dual Fuel Portable Generator
The Champion 4750-Watt Dual Fuel Generator is a reliable workhorse and a popular entry in the Best Dual Fuel Generators category due to its proven performance and excellent value. It provides 3800 running watts on gasoline, easily powering a $\text{RV}$ or several essential home items. The electric start simplifies operation, getting the 224cc Champion engine running quickly. Since it runs on both gasoline and propane, it gives users the crucial flexibility required during long outages. Moreover, the inclusion of a Volt Guard built-in surge protector adds a layer of safety for your connected devices, which is a nice touch for a traditional unit.
The Intelligauge system is a standout feature, allowing you to monitor voltage, frequency, and $\text{run-time}$ hours, which is key for tracking maintenance intervals. The generator features a variety of outlets, including an $\text{RV-Ready}$ 30A outlet ($\text{TT-30R}$) and a locking 30A outlet ($\text{L5-30R}$). At 119 pounds, it is manageable for a conventional generator, and the included wheel kit aids in moving it around. A slight downside is that, unlike many newer models, this unit does not feature a CO Sensor in the base configuration, requiring vigilance from the user regarding placement and safety.
This Champion model is best suited for budget-conscious homeowners or $\text{RV}$ users who need dependable mid-range power and appreciate the convenience of an electric start and $\text{dual fuel}$ options. It’s a straightforward, rugged generator that excels in basic backup power needs. The generous $\text{3-year}$ limited warranty and FREE lifetime technical support offered by Champion make it a low-risk purchase. It is a solid, traditional choice among the Best Dual Fuel Generators for pure, reliable wattage. To learn more about $\text{RV}$-ready generators, check out this guide: best 30-amp RV generators.
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8. Pulsar Products GD400BN 4000W Portable Super-Quiet Dual Fuel & Parallel Capability Inverter Generator
The Pulsar GD400BN is a superb choice for maximum portability in the inverter class, earning a spot among the Best Dual Fuel Generators. Delivering 4000 peak watts on gas and 3600 on propane, it offers enough power for $\text{RV}$ essentials and sensitive home electronics. Its defining feature is its ultra lightweight design, weighing in at a mere 47.3 pounds—significantly lighter than comparable models. This makes it incredibly easy to transport, whether you’re tailgating or using it for remote site power. Plus, its operation is super quiet at around 59 dB at half load.
As an inverter, the Pulsar produces clean power, making it safe for laptops, televisions, and other delicate devices. The dual fuel capability is managed by a simple fuel selector dial, offering true fuel flexibility. The unit is also parallel capable, providing the option to easily double the power output when two units are linked (parallel kit sold separately). For a more in-depth look at $\text{RV}$ power, read about $\text{best-dual-fuel-inverter-generators}$ here: best dual fuel inverter generators. Its 145cc engine is capable and fuel-efficient, offering up to 4.5 hours of continuous operation on its small 1.1-gallon fuel tank.
This generator is ideal for users where weight and noise level are the primary concerns, such as campers, fishermen, or small $\text{RV}$ owners. While the short run time at half load is a minor limitation, its easy portability and ability to safely power sensitive electronics make it a standout unit. For those who need a light, quiet, and reliable dual fuel option, the Pulsar GD400BN is easily one of the Best Dual Fuel Generators available. Its competitive price point further enhances its appeal as an excellent value choice.
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9. A-iPower 4300-Watt Dual Fuel Portable Inverter Generator (SUA4300iD)
The A-iPower SUA4300iD is a highly efficient and $\text{RV-ready}$ option, establishing itself as a flexible choice among the Best Dual Fuel Generators. It offers 4300 starting watts on gas, providing clean power (3% THD) from its inverter technology, making it perfectly safe for electronics like laptops and power tools. A unique and valuable feature is its Fuel Sense Technology, which allows the unit to run on both gas and propane, and even automatically switch between the two for a combined $\text{run time}$ of up to 26 hours at 25% load—outstanding $\text{long-term}$ capability.
Designed for portability, the inverter weighs only 54.8 pounds and includes a telescoping handle and $\text{flat-free}$ wheels for easy transport to a campsite or tailgate. Its Low Idle Technology contributes to both fuel efficiency and a manageable noise level of 63 dB. Moreover, safety is a priority, as it is equipped with a CO sensor and an auto-shutdown mechanism. The control panel is multi-featured, including an $\text{RV-Ready}$ L5-30R 30A outlet and a data center display, which simplifies operation. For a detailed guide on $\text{RV}$ generators, see this resource: best RV generators.
This generator is best for $\text{RV}$ owners and frequent campers who prioritize extended run time and easy portability. The Fuel Sense Technology sets it apart, offering unparalleled flexibility and endurance during extended off-grid use. While the noise level is slightly higher than the quietest inverters, the A-iPower’s blend of power, clean output, and innovative fuel management makes it one of the most versatile Best Dual Fuel Generators available today. The comprehensive $\text{3-year}$ warranty adds to the overall peace of mind.
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10. Champion Power Equipment 4500-Watt Electric Start Dual Fuel RV Ready Portable Inverter Generator
The Champion 4500-Watt Inverter is engineered for those who prioritize $\text{Quiet Technology}$ and extended operation, making it one of the most user-friendly Best Dual Fuel Generators. It offers 4500 starting watts on gas, dropping to 3500 running watts, which is perfectly adequate for $\text{RV}$ air conditioners and most essential home appliances. Its Quiet Technology keeps the noise level low at $61 \text{ dBA}$, a great balance of power and minimal disruption. Moreover, its extended run time is impressive, reaching up to 14 hours on gasoline and an astounding 21 hours on propane.
A major safety benefit of this Champion inverter is the inclusion of the CO Shield carbon monoxide auto-shutoff system. Operation is made simple with the EZ Start Dial, which streamlines the startup process. The Intelligauge with Power Meter provides easy monitoring of voltage and operating hours. Furthermore, the unit is parallel ready (kit sold separately), allowing users to connect another $\text{Champion}$ inverter to boost total power for larger loads. The $\text{RV-Ready}$ design, including a dedicated outlet, confirms its suitability for travel and camping needs.
This generator is an excellent choice for $\text{RV}$ owners and campers who need all-day power without the constant noise or refueling hassle. Its standout features are the market-leading run time on propane and the $\text{CO Shield}$ safety. The electric start further enhances its appeal as an easy and convenient option. We place this model highly among the Best Dual Fuel Generators for its superb blend of quiet operation, longevity, and user-focused features. If you are focused on $\text{RV}$ use, you might also find this guide helpful: best inverter generators for RV.
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How to Choose Best Dual Fuel Generators
A dual fuel generator offers the flexibility to run on both gasoline and propane (Liquefied Petroleum Gas, or LPG), which is a massive advantage during power outages when one fuel source might be scarce. These generators provide crucial peace of mind, allowing you to use the most readily available fuel. Propane, in particular, has a longer shelf life and burns cleaner than gasoline. Choosing the right generator requires a careful assessment of your power needs and the features that matter most to you. Look beyond just the peak wattage to ensure it meets your specific requirements for home backup, $\text{RV}$ use, or job site applications.
Power Output and Running Watts
The power output, measured in watts, dictates how many devices or appliances your generator can run. You should focus on running watts (continuous power) rather than peak watts (a temporary surge). To evaluate, list all the items you need to power simultaneously, find their running wattage, and add a 25% buffer. A generator’s running wattage determines its real-world capability. Choosing a unit with the correct $\text{power output}$ is critical to avoid overloading and damaging your generator or appliances.
Inverter vs. Conventional Technology
This is a fundamental difference in how the generator produces electricity. Inverter generators produce clean, stable power (low Total Harmonic Distortion or THD) that is safe for sensitive electronics like computers and smartphones. They are also significantly quieter and more fuel-efficient. Conventional generators are typically louder and cheaper but produce raw power suitable only for tools and major appliances without delicate circuits. If you plan on powering electronics, an inverter model is non-negotiable for protection.
Fuel Efficiency and Run Time
Fuel efficiency directly impacts how long your generator can run on a single tank or propane cylinder. Look at the advertised run time at a $\text{25\%}$ or $\text{50\%}$ load. A longer run time means less monitoring and fewer trips to refuel. Features like Economy Mode on inverter models can adjust engine speed to match the load, dramatically extending $\text{run time}$. This is especially important for extended power outages where $\text{fuel}$ resupply may be limited.
Safety and Control Features
Safety is paramount. Critical safety features to look for include Automatic Low Oil Shutdown, which protects the engine from damage, and an Overload Protection system. More importantly, nearly all new models, including the Best Dual Fuel Generators, now include a CO Sensor or $\text{CO Shield}$ that automatically turns the unit off if dangerous levels of carbon monoxide are detected. Furthermore, check for $\text{GFCI}$ outlets, which provide protection against ground faults.
Portability and Noise Level
The physical design affects usability. For portability, check the unit’s weight and whether it includes a wheel kit and folding or telescoping handles. If the generator will be used in a campground or residential area, the noise level (measured in $\text{dBA}$) is crucial. Inverter models run from $52\text{ dBA}$ to $65\text{ dBA}$ (quiet to moderate), while conventional models are typically much louder, often exceeding $\text{75 dBA}$.
Understanding Dual Fuel Engine Operation
The key advantage of a dual fuel generator lies in its engine’s ability to switch seamlessly between gasoline and propane. This $\text{multifuel}$ capability, though slightly different from the Wikipedia definition of a $\text{multifuel}$ engine that handles different octane fuels (Source: Multifuel Engine Definition), is a modern convenience. Gasoline usually provides a slightly higher power output (wattage), which is better for starting high-amperage appliances. Propane, however, has a much longer shelf life—it never goes “bad”—and is often cheaper to store in large quantities, offering extended emergency power.
Propane also burns cleaner, which can extend the time between maintenance, but be aware that running the engine on propane will result in a roughly $\text{10\%}$ drop in total power output compared to gasoline. Users should practice switching between the two fuels before an emergency to understand the generator’s performance difference and the procedure for $\text{fuel}$ management.
How to Use Best Dual Fuel Generators
Proper usage and setup are essential for both safety and performance when operating any of the Best Dual Fuel Generators. Follow these practical usage steps:
- Setup and Prep: Place the generator outdoors, at least $\text{20 feet}$ away from your home’s windows and doors to prevent carbon monoxide poisoning. Check the oil level and connect the propane hose (if using $\text{LPG}$) or fill the gasoline tank. Ensure the unit is on a level surface and the ground is dry.
- Core Usage & Best Practices: Start the generator using the electric start or recoil pull. Let it run for $\text{5 minutes}$ to warm up before connecting any loads. Connect devices or your transfer switch, starting with the highest-amperage appliances first, then the lower-wattage ones. Never overload the generator; keep the total running wattage below the generator’s rated output.
- Optimization/Safety/Maintenance: Always turn off and disconnect all appliances before shutting down the generator. If running on gasoline, consider running the carburetor dry using the fuel shutoff feature (if available) before long-term storage to prevent gumming. This is also a good time to review long-term maintenance tips.
- Troubleshooting & Pro Tips: If the generator won’t start, check the fuel selector, ensure the fuel valve is open, and verify the low-oil sensor hasn’t been tripped. For dual fuel models, try switching to the other fuel source. For cold starts, use the choke liberally. Never attempt to refill the gas tank while the engine is running or hot.
Frequently Asked Questions
What is the benefit of a best-dual-fuel-generators having a CO Sensor?
A $\text{CO Sensor}$ (Carbon Monoxide Sensor) is a crucial safety feature that continuously monitors carbon monoxide levels around the generator. If the levels become dangerous, the sensor automatically shuts off the engine. This feature is vital for preventing accidental carbon monoxide poisoning, which can occur when a generator is too close to an occupied structure, making it a must-have safety element.
Can I connect one of the Best Dual Fuel Generators directly to my home’s electrical panel?
No, you should never connect a portable generator directly to your home’s main electrical panel using a simple extension cord. Doing so can cause back-feeding, which sends power back into the utility lines, potentially injuring utility workers. You must use a professionally installed transfer switch ($\text{manual}$ or $\text{automatic}$) connected to a $\text{transfer switch-ready}$ outlet on the generator.
Does running a best-dual-fuel-generators on propane affect the wattage output?
Yes, running a generator on propane (LPG) will typically result in a loss of power output, usually around $10\%$ to $\text{15\%}$ compared to running it on gasoline. For instance, a generator rated for $\text{5000 running watts}$ on gas may only produce $\text{4500 running watts}$ on propane. This reduction is due to propane having a lower energy density than gasoline.
What does ‘Inverter Technology’ mean for a best-dual-fuel-generators?
Inverter technology electronically converts the rough $\text{AC}$ power produced by the generator’s engine into clean, stable DC power, and then inverts it back to clean $\text{AC}$ power. This process results in power with low Total Harmonic Distortion ($\text{THD}$), which is safe for charging and operating sensitive electronics like laptops, smartphones, and certain medical equipment.
Are dual fuel generators suitable for high-altitude use?
Generators lose power the higher they operate above sea level due to lower oxygen density. For high-altitude use, most dual fuel generators require a specific high-altitude jet kit to adjust the carburetor for the thinner air. Operating a generator above $\text{2000-4000 feet}$ without this kit can lead to poor performance and damage. Always check the manufacturer’s specifications regarding altitude use.
Final Thoughts
Selecting the right generator is a decision that safeguards your family and property during uncertain times. The versatility of the Best Dual Fuel Generators—offering reliable power from both propane and gasoline—simply provides the best possible insurance. When making your final choice, prioritize power needs, looking at running watts for a realistic load assessment. Moreover, factor in safety features like the CO Sensor and decide whether the quiet, clean power of an inverter model justifies the higher cost for your specific use case.
For most buyers, the Westinghouse 5000 Peak Watt Super Quiet Dual Fuel Portable Inverter Generator offers the **best dual fuel generators** balance of quiet operation, clean power, and sufficient wattage for home essentials and $\text{RV}$ use. If you need maximum, whole-house power capacity, choose the DuroMax XP13000EH 13,000-Watt Dual Fuel Portable Generator for its unmatched wattage and robust, transfer-switch-ready design, ensuring you are never left in the dark.
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