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The 7 Best Dual Fuel Generators Reviews and Buying Guide

Dual fuel generators are reliable power sources that can be incredibly useful during power outages or outdoor activities. These generators can run on both gasoline or propane, giving users flexibility and ensuring a steady power supply when it’s needed most. Unlike generators that only run on one type of fuel, dual fuel generators can adapt to different situations, making them essential for various purposes.

Factors to Consider:

  • Fuel Capacity: The dual fuel generators offer a variety of fuel capacities, ranging from 5 to 8 gallons for gasoline and 20-pound propane tanks to larger sizes. This range gives users the flexibility to choose based on their specific needs and preferences for convenience.
  • Output Power: It is typically ranging from 3,000 watts to 12,000 watts or even higher. This range of power options suits various needs, from providing backup power for homes during outages to running tools at a job site.
  • Noise Level: These generators generally produce noise levels ranging from 50 decibels (dB) for quieter models suitable for residential areas to around 70 dB for higher-powered units designed for industrial or heavy-duty applications.

Check out our “Buying Guide” and top picks customized to your needs for detailed insights and recommendations. This will help you make a well-informed decision to ensure dependable backup power for your home or business.

Best Dual Fuel Generators Table

Dual Fuel GeneratorFuel capacityRated wattsWarrantyBuy Now
Westinghouse Dual Fuel Generator 6.6 gallon9500 watts3 yearCheck On Amazon
Duromax Dual Fuel
8.3 gallon9500 watts3 yearCheck On Amazon
Champion Dual Fuel Generator 3.4 gallon3800 watts3 yearsCheck On Amazon
WEN 224cc Dual fuel generator4-gallon4750 watts2-yearCheck On Amazon
Wen Dual Fuel Generator6.6 gallon8300 watts2 yearsCheck On Amazon
Pulsar Dual Fuel Portable Generator8 gallon12000 watts1 yearCheck On Amazon
Generac Dual fuel generator--9400 watts--Check On Amazon

Best Dual Fuel Generators Reviews

1. Westinghouse Dual Fuel Generator 


Westinghouse is a well-known brand in the power generators. They also make a dual-fuel power generator that we have included below.

The first product in our list is a heavy-duty dual-fuel power generator from Westinghouse. This generator is powered by a 457CC 4-stroke engine. It is the most powerful generator from our list as it is capable of providing 9500W of running power and 12500W of peak output when run on gasoline. It also has a very good output on propane with 8500W of running power and 11200W of peak power.

You can put up to 6.6 gallons of fuel at once, which will give you about 12 hours of continuous run time without needing a refill. This makes it perfect for any outdoor party at night or camping in RVs. It features various outlet ports, including 2 GFCI 120V 5-20R outlets, one transfer switch ready 120V/240V L14-30R outlet, one RV Ready 120V/240V 14-50A Outlet and a 12V battery charging port. There is 3-year manufacturer’s warranty on Westinghouse WGen9500DF.


  • 9500W continuous and 12500W peak power on gas
  • 8500W continuous and 11200W peak power on propane
  • 6.6-gallon fuel tank capacity
  • 2 GFCI 120V ports
  • 1 transfer switch ready 120V/240V L14-30R
  • 1 RV Ready 120V/240V outlet
  • 12V Battery Charging Port
  • 3 year warranty period


  • Power capacity is highest in comparison
  • Fuel capacity is pretty high
  • All outlets have rubber caps


  • Very expensive fuel generator

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2. Duromax Dual Fuel Generator 

DuroMax XP12000EH

Duromax is another popular brand that makes many power generators. They also have a dual fuel generator in their line up.

The second product in our list is a heavy duty dual fuel generator from Duromax. This generator is powered by a 458CC OHV 4-stroke Duromax engine that can use either gasoline or propane as the fuel; you will be getting almost similar power output. When used with gasoline, this generator is capable of providing 9500W of running power and 12000W of surge power. When used with propane, the numbers fall a little bit with 9025W of running power and 1140W of surge power.

The fuel tank capacity on Duromax XP12000EH is 8.3 gallons that is more than enough for a long and uninterrupted performance. You can utilize this high power output via several different ports such as one 120V/240V 50A heavy-duty outlet, one 120V/240V 30A twist lock outlet, one 120V 30A twist-lock outlet and two regular 120V 20A household outlets. There is 3 year warranty on this product from Duromax.


  • 9500W of running power and 12000W of peak power when run on gasoline
  • 9025W of running power and 11400W of peak power when run on propane
  • Powered by 458 cc OHV 4-stroke Duromax engine
  • 8.3-gallon fuel tank capacity
  • 1 x 120V/240V 50A heavy-duty outlet
  • 1 x 120V/240V 30A twist lock socket
  • 1 x 120V 30A twist-lock socket
  • 2 x 120V 20A household outlets
  • 3 year warranty period


  • Power capacity is pretty good
  • Fuel capacity is better than other options


  • Outlets do not have any cover

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3. Champion Power Equipment Dual Fuel Generator 

champion dual

Next up, we have a dual fuel generator from  Champion Power Equipment. It is a very reliable brand for power generators and equipment.

The third product in our list is a highly reliable dual-fuel power generator from  Champion Power Equipment. It is powered by a 4 stroke, 224 cc engine which has a decent fuel efficiency. There is a push-button electric start for convenient usage. It is capable of providing 3800W of running power and 4750W of peak power when run on gas.

You can also run it using propane, in which case, it provides 3420W of running power and 4275W of peak power. With a complete fill, you can obtain up to 9 hours run time on gasoline and 10.5 hours of run time on propane.

Fuel tank capacity on this Champion dual-fuel power generator is 3.4 gallons that is good enough for general applications. The outlet ports consist of one 120V 30A RV (TT-30R) outlet, one 120V 30A locking (L5-30R) outlet, and two 120V 20A regular household outlets.

As we mentioned earlier, it is one of the most reliable option in our list as it has a 3 years of the manufacturer’s warranty period.


  • 3800W of running power and 4750W of peak power on gas
  • 3420W of running power and 4275W of peak power on propane
  • Powered by 4 strokes 224 cc engine
  • Push-button start
  • Good fuel efficiency
  • Up to 9 hours run time
  • 3.4-gallon fuel tank capacity
  • 1 x 120V 30A RV (TT-30R) outlet
  • 1 x 120V 30A locking (L5-30R) outlet
  • 2 x 120V 20A household outlets
  • 3 years warranty period


  • Warranty period is pretty long
  • Engine efficiency is good


  • Fuel tank capacity could be better

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4. WEN 224cc Dual fuel generator

WEN 224cc Dual fuel generatorDual fuel generator has a strong 224cc engine that runs on either gasoline or propane. This gives you the freedom to choose and ensures reliable power in any situation. Whether the power goes out or you are enjoying the outdoors, this generator has got you covered. It comes with 4750 of wattage and 120 of voltage power. It has a big 4-gallon tank, which keeps going for a long time up to 11 hours on half power. It is perfect for all sorts of things you might need power for.

This generator has regular plugs, a special one that fits different things, and even a plug like the one in your car. It comes 2-year warranty. This dual fuel generator is your dependable energy source which is versatile, tough giving you confidence in your power solution.


  • Dual fuel generator (runs on gasoline or propane)
  • 224cc engine for reliable power
  • 4-gallon fuel tank for extended usage
  • 11 hours runtime on half load
  • Electric start for convenience
  • 4750 of wattage and 120 of voltage power
  • Multiple outlets for diverse power needs
  • CARB and EPA compliant
  • 2-year warranty


  • Versatile fuel options
  • Powerful and reliable engine
  • Long runtime and fuel-efficient
  • Easy electric start
  • Various outlets for different devices


  • May be relatively heavy or bulky

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5. Wen Dual Fuel Generator

wen dual

You must have heard about Wen if you have previously looked for power tools or machinery. They also make a dual fuel generator, as mentioned below.

Here is another heavy-duty dual-fuel power generator from Wen. It is powered by a 4-stroke 457CC OHV engine, which has a turn key start. You can get up to 8300W of running power and a maximum of 11000W output on gasoline. All this power is fueled from a 6.6-gallon gasoline tank that will allow you to have around 8.5 hours of nonstop usage.

On the other hand, it is capable of providing 7500W of running power and has 9500W of surge power when used with propane.

If you take a look at the front, you will see that it has four 120V 20A GFCI outlets, one 120V 30A twist lock L5-30R outlet, one 120V/240V 50A NEMA L14-50R outlet and one 12V DC outlet. You will be getting 2 years of warranty with this dual fuel generator.


  • 8300W of running power and 11000W of peak power on gas
  • 7500W of running power and 9500W of peak power on propane
  • 6.6-gallon fuel tank capacity
  • 8.5 hours of backup in a single run
  • 4 strokes 457CC OHV engine
  • Turn the key to start the engine
  • 2 x 120V 20A GFCI Outlet
  • 1 x 120V 30A twist lock Outlet
  • 1 x 120V/240V 50A NEMA L14-50R Outlet
  • 1 x 12V DC outlet
  • 2 years warranty period


  • Good option for heavy applications
  • Decent fuel capacity


  • Bit heavier than some other options
  • Price is a bit higher in comparison

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6. Pulsar Dual Fuel Portable Generator 


Pulsar Dual Fuel Portable GeneratorPulsar is a bit underrated brand when it comes to power generators. Still, they have pretty positive feedback from users.

If you are looking for a moderately powered dual fuel generator for a general-purpose application, then Pulsar can be the best option for you. It is capable of providing 9500W of running power and 12000W of surge power on gasoline. The performance on propane is also pretty good as it gives 8550W of running power and is capable of 10800W of peak power.

It is powered by a 4 stroke OHV air cooled 457CC engine that has a 8-gallon fuel tank. With this tank, you can get around 12 hours of operation if run at half load on gasoline. It has a decent set of outlets as well such as four 120V 20A outlets, one 120V/240V 50A outlet, one 120V/240V 30A twist-lock outlet and one 12V DC outlet. It is backed by 1 year warranty from Pulsar that is quite less at this price tag.


  • 9500W of running power and 12000W of peak power on gas
  • 8550W of running power and 10800W of peak power on propane
  • 8-gallon fuel tank capacity
  • 12 hours of operation if run at half load on gasoline
  • 4 stroke OHV air cooled 457 cc engine
  • 4 x 120V 20A outlets
  • 1 x 120V/240V 50A outlet
  • 1 x 120V/240V 30A twist-lock outlet
  • 1 x 12V DC Outlet
  • 1 year warranty period


  • Decent collection of outlets
  • Pretty good power output


  • Warranty period is short

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7. Generac Dual fuel generator

Generac Dual fuel generatorThe Generac GP7500E is a powerful portable generator with a 7500-watt capacity. It can run on either gasoline or propane, giving you flexibility in choosing your fuel.  This generator starts with a powerful 9400 watts, ensuring it quickly and reliably provides the electricity you need. It has designed to be practical. It can keep running for a long time up to 10 hours, when you are using half of its power. This means you can have power for a long time without any breaks or problems.

The COsense technology makes this generator safer. It helps protect you from the danger of carbon monoxide poisoning. This generator is made with a strong steel frame, so it is durable and reliable. It is also small and easy to handle. It comes with wheels and a handle, you can move this powerful generator wherever you need it. It weighs 229 pounds, finding a good balance between giving a lot of power and being easy for users to handle. It combines power, safety, and portability for many different uses.


  • Dual-fuel capability (gasoline or propane)
  • Powerful 7500-watt capacity with a 9400-watt starting point
  • Up to 10 hours runtime at 50% load
  • Comes with Voltage of 240 Volts
  • COsense technology for carbon monoxide safety
  • Robust steel frame and compact design with wheels for portability


  • Versatile dual-fuel option
  • Strong power output for various needs
  • Extended runtime for prolonged use
  • Durable construction with a portable design


  • Dual-fuel capability adds complexity for fuel management

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Buying Guide For The Best Dual Fuel Generators

1. Fuel Capacity

Dual fuel generators run on both gasoline and propane and come equipped with separate fuel tanks to store the fuel. These tanks come in different sizes, usually measured in gallons.  For example, a 10-gallon tank holds up to 10 gallons of fuel. Choosing a generator with a bigger tank has advantages. It means less often refueling, ensuring steady power when needed. Also, generators with larger tanks often have extra features.

2. Output Power

The output power of a dual fuel generator is important. It tells you how much electricity it can make, usually measured in watts. More power means it can run more devices at once. When checking the output power, make sure it matches your needs and won’t damage your electronics.

3. Noise Level

Consider noise level when choosing a generator, especially for residential or outdoor use where noise matters. Generators with lower dB ratings are quieter, making them more comfortable to use. Dual fuel generators often come with noise-reducing features like mufflers and insulation. By checking noise levels, you can balance power and comfort, ensuring a good experience without disturbing others.

4. Power Source

Dual fuel generators have the benefit of running on either gasoline or propane. This gives you flexibility in choosing fuel. Gasoline is easy to find and good for short-term use, while propane burns cleaner and lasts longer in storage. To decide which fuel is best, check availability and cost in your area. Also, think about things like fuel storage needs, safety, and environmental impact. These factors will help you pick the right fuel for your dual fuel generator.

5. Engine Type

The type of engine in a dual fuel generator is crucial for how well it works and how long it lasts. There are two main types: recoil-start engines and electric-start engines. Recoil-start engines are basic and reliable, working well in tough conditions like extreme temperatures or high altitude. Electric-start engines are more advanced, starting with the push of a button for extra convenience. 

Dual Fuel Generators – FAQs

1. Are dual fuel systems worth it?

Ans: The worthiness of dual fuel systems depends on factors like local energy costs, climate, and environmental priorities. They offer flexibility to switch between a traditional heating system and an alternative source, potentially saving costs. Consider upfront expenses, long-term savings, and government incentives to determine if a dual fuel system aligns with your needs and budget.

2. Is a dual fuel generator better than a diesel generator?

Ans: The superiority of a dual fuel generator over a diesel generator depends on specific needs. Dual fuel generators offer flexibility by running on both gas and propane, providing fuel options. Diesel generators are often more fuel-efficient and durable, suitable for long-term or heavy-duty use. Consider factors like fuel availability, cost, and intended use to determine which generator aligns better with your requirements.

3. What is the duration of operation for a dual fuel generator running on propane?

Ans: Ans: At an average consumption rate of 2 to 3 gallons per hour, a 1,000-gallon propane tank has the capacity to power a generator for approximately 200 (equivalent to 8.3 days) to 400 hours (equivalent to 16.7 days).

4. Can I convert my generator to dual fuel?

Ans: Yes, it is possible to convert some generators to dual fuel operation. Conversion kits are available in the market for certain generator models, allowing you to modify them to run on both gasoline and propane or natural gas.


In conclusion, when it comes to dual fuel generators, two options stand out for their reliability, efficiency, and overall performance. 

  • Westinghouse Dual Fuel Generator offers a powerful and reliable source of backup power with its dual fuel capability, making it a top choice for homeowners and professionals alike. 
  • Duromax Dual Fuel Generator impresses with its robust construction and versatility, providing ample power for various applications while ensuring fuel efficiency. 
  • WEN 224cc Dual Fuel Generator offers both affordability and performance, making it a great choice for those looking for a reliable solution at a reasonable price.

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