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5 Best Dual Fuel Generators of 2023

Dual-fuel generators offer way more flexibility than their single-fuel peers. If you want better functionality, this is the kind of machine to go for.

Generators set of energy generating portable electrical equipment, machines petrol fuel industrial engine isolated vector illustration. Diesel industry industrial and home immovable power generator.

Now we know that dual fuel models may come at a higher price, but the efficiency they provide is enough to convince you to choose them. Be it work sites, camping trips, or a week-long blackout, dual fuel generators will take care of all of it.

But the problem arises when you go to purchase a unit. With numerous options available, it can become quite confusing. This is where we come in.

We know the dilemma, and to solve it, a list of the 5 best dual fuel generators has been curated by us. With unbiased reviews and detailed pros and cons, we are sure that you will find the product you need right here.

Without further ado, let us get into it.

Best Dual Fuel Generators

Emergency material of a fire truck, with generator set and hoses.

Here's the list of the 5 best dual fuel generators, carefully curated with unbiased reviews and detailed information to help you find the perfect generator for your needs.

1. DuroMax XP12000EH Dual Fuel Portable Generator - Best for RVs & Camping

A device known for its stellar performance, the DuroMax XP12000EH Dual Fuel Portable Generator will charm you with its power-boost technology. For anybody who wants a generator to take along in RVs or camping trips, this is a great option. Read on to know all its remarkable features.

DuroMax XP12000EH Generator-12000 Watt Gas or Propane...
  • Powerful DuroMax Engine: the XP12000EH is powered by a...
  • Dual fuel technology: the ability to run on propane or...

Why Did We Like It?

This product can efficiently run a whole RV without needing any other power source. The engine has a peak power of 12,000 watts accompanied by a running power of 9,500 watts on gas. When it comes to propane, it gives a peak power of 10,200 watts with a running power of 8,075 watts.

Moving on to the tank capacity, the product comes with an 8.3-gallon gas tank that can run for 10 hours. The propane capacity is 40 lbs and runs for up to 20 hours at 50% load. We used it as an emergency backup option, and there was nothing we could complain about. 

Along with these specifications, this generator has an automatic low oil shutdown option making sure that it is not affected because of low oil. This indirectly increases its durability and it also has mufflers attached inside, which facilitate considerably quieter operation.

What Could've Been Better?

While the specifications are over the top, we had to call up customer care for a query, and we had to wait for quite a long time before our call got connected. Now, this can be time-consuming, and many of us might not have that much time to spare.


  • Capable of handling heavy load
  • Detailed product manual
  • Heavy-duty metal frame
  • Noise-reducing mufflers for quiet operation


  • Customer care is not helpful

Dimensions: 30″ x 29″ x 26″ | Weight: 224lbs | Power Source: Gas | Ignition System Type: Electric Start | Voltage: 240V | Engine Type: 4 Stroke | Engine Displacement: 457cc | Frequency: 60 Hz | Tank Volume: N/A | Runtime: 8 Hours | Warranty: 1 Year

2. DuroMax XP4850EH Dual Fuel Portable Generator - Best for Backup Power

Next up is a very affordable product from the house of Duramax. It is user-friendly and is one of the most cost-effective devices on the list. We needed a generator as a backup because power cuts are very frequent in our area. Needless to say, the product showed an outstanding performance.

DuroMax XP4850EH Generator-4850 Watt Gas or Propane...
  • Plenty of Power – With 4,850 starting watts and 3,850...
  • Dual Fuel Technology – This generator runs on gasoline or...

Why Did We Like It?

This device comes with a capacity of 4,850 peak watts and 3,850 running watts. This ensures that you have a machine that can handle heavier loads and can power a TV, air conditioner, and fridge if need be.

Talking about its performance, the gas tank can power gadgets for up to 8 hours while the propane tank could perform in a similar way for 20 hours. Be it a hurricane or a storm; your devices will be working throughout one. 

It comes with 120V and 240V outlets, and you can use both or one at full load accordingly. Rest assured that the home will be functioning as usual, even during power cuts.  

Another important feature is that it runs smoothly no matter what the weather is like. One does not need to worry about the machine getting coddled at any temperature. Also, this requires low maintenance. You just have to worry about refilling the oil, and that is all. 

What Could've Been Better?

We had not faced any difficulties initially, but then when it was time to replace parts, we were astonished to find that most parts are not available online. This was disappointing as without being able to replace it, the gadget cannot function efficiently. The best that we could do was go to a garage and repair it. 


  • Energy-saving and does not harm the environment
  • Quick and reliable functioning
  • Provides long-lasting durability
  • Can run the whole house single-handedly


  • Parts were unavailable

Dimensions: 24″ x 17″ x 17″ | Weight: 122lbs | Power Source: Gas, Propane | Ignition System Type: Start-Camping | Voltage: 120V | Engine Type: 4 Stroke | Engine Displacement: 210cc | Frequency: 60 Hz | Tank Volume: 4 Gallons | Runtime: N/A | Warranty: 1 Year

3. DuroMax XP4400E Gas Powered Generator - Best for Portable Power

Imagine going on a trip and running out of gas to refill! Well, the DuroMax XP4400E Gas Powered Generator works with batteries too. This brilliant feature makes it an excellent device to take on trips and hikes. It is difficult to carry gas or propane, but batteries can easily be taken along. 

DuroMax XP4400E Gas Powered Portable Generator-4400 Watt...
  • Plenty of Power – With 4,400 starting watts and 3,500...
  • Powerful Engine – The DuroMax 210cc OHV engine is a...

Why Did We Like It?

First things first, this generator comes with plenty of power, with a capacity of 4400 peak watts and 3500 running watts. We could easily power all our required devices in the RV for two days. 

Also, it has a continuous run time of 8 hours with a full tank. While it may not work for big homes, it is a perfect fit for small homes and weekend trips.

To add on, the machine switches off whenever the oil runs low. To prevent other mishaps, it has surge arrest technology that protects it from power surges. 

Along with the above features, it is very easy to move the device as it comes with strong wheels. The wheels are sturdy, and you can take it up and down rough terrain.

What Could've Been Better?

We initially faced problems with some parts and had to contact customer service. We felt that their replies were scripted, and we ended up paying for the parts’ shipment even when the product was under warranty. The whole device could not be replaced, but the parts could be as they said. Again, the extra shipping charges raised our total expenditure.


  • Battery-powered for ease of usage
  • Suitable for trips and small homes
  • Operates at both 120V and 240V
  • Comes with surge arrest technology


  • Inefficient customer service

Dimensions: 24″ x 17″ x 17″ | Weight: 127lbs | Power Source: Gas | Ignition System Type: Electric | Voltage: 120V | Engine Type: 4 Stroke | Engine Displacement: 210cc | Frequency: 60 Hz | Tank Volume: 3.96 Gallons | Runtime: N/A | Warranty: N/A

4. Firman H03651 Hybrid Dual Fuel Generator

Be it a camping trip or a work site you need to take care of, this brilliant device from the house of Firman will leave you satisfied. The Firman H03651 Hybrid Dual Fuel Generator is a very versatile gadget and is fit to be used in any space you want to take it in. With strong wheels, drag it around with ease. 

Firman Hybrid Series H03651 3650/4550 Watt Dual Fuel...
  • Dual Fuel - Works on Gasoline or Propane
  • Starting Watts -4550 Gas/4100 LPG

Why Did We Like It?

This product features a gas tank with 4550 peak watts and 3650 running watts. The LPG tank has a capacity of 4100 starting watts and 3300 running watts. This is good enough to run air conditioners, air compressors as well as gadgets required on RVs. 

Further, the device also comes with Phoenix FatHead block, which will not let your engine heat up too much. Since it often runs heavy machinery, it is essential to keep the engine cool for better and continuous performance. 

To add on, the unit is equipped with a 5-gallon tank providing 14 hours of runtime. It can pretty much get you through the day without having to worry about energy consumption.  

As an additional benefit, the machine has noise mufflers fitted inside, which makes it comparatively less noisy than most other machines. Also, if you face any troubles with the product, customer service will help you sort it out, and they are very responsive. 

What Could've Been Better?

Though the features are outstanding, we did have a problem with how the device arrived. The steel frame was bent inwards, and though this did not affect the functionality, we obviously wanted it exchanged. The second device also had slight damage to the body. It would have been great if this could be prevented!


  • Low oil shut-off engine
  • 8 inches never-flat wheels
  • Outlet covers protect outlets
  • 3-in-1 data minder


  • Frame arrived damaged

Dimensions: 27.9″ x 18.1″ x 20.5″ | Weight: 119.5lbs | Power Source: Gas, Propane | Ignition System Type: Electric Start | Voltage: 120V | Engine Type: 4 Stroke | Engine Displacement: 208cc | Frequency: 60 Hz | Tank Volume: ‎5 Gallons | Runtime: ‎14 Hours | Warranty: 3 Years

5. Pulsar G12KBN-SG Dual Fuel Generator

The Pulsar G12KBN-SG Dual Fuel Generator is a versatile and durable power solution tailored for outdoor environments and emergency situations. With an elevated metal frame, this generator can withstand harsh elements while delivering an outstanding performance of 12,000 watts on gas and 10,800 watts on propane. Its transfer-switch readiness ensures ease of integration with your home's wiring – a vital feature for those in areas prone to frequent outages.

Pulsar G12KBN-SG Heavy Duty Portable Dual Fuel Generator -...
  • 12, 000 peak watts/ 9, 500 Rated watts (gasoline) & 10, 800...
  • Dual fuel capability allows you to choose between gasoline &...

Why Did We Like It?

The Pulsar G12KBN-SG truly shines in its dual fuel capability, offering users the choice between gasoline or liquid propane fuel sources. This flexibility is particularly useful during emergencies, when propane may be more readily available. Moreover, its sturdy frame, drop-down handles, and 10-inch never-flat wheels promote both portability and storage convenience.

Additionally, the generator is equipped with an array of outlets: four 120V 20A AC outlets, one 120V/240V 30A twist-lock outlet, one 120V/240V 50A outlet, and one 12V DC output. This variety ensures that the Pulsar G12KBN-SG can accommodate a wide range of power requirements, as attested by a satisfied customer: "It has four regular 120 outlets plus a couple of different 240 outlets for larger tools. There's even a separate 12-volt DC connection for smaller stuff."

What Could've Been Better?

Though the Pulsar G12KBN-SG generator delivers impressive power capabilities and versatility, it may generate more noise than some users are comfortable with. In residential settings or noise-sensitive areas, this might be a drawback worth considering before making a purchase.


  • Dual fuel capability
  • Transfer-switch ready
  • Durable frame
  • Multiple power outlets
  • Portable and easy to store


  • May be noisy for some users

Dimensions: 28.5″ x 26″ x 25.5″ | Weight: 209lbs | Power Source: Gas, Liquid Propane | Ignition System Type: Electric Start | Voltage: 120-240V | Engine Type: 4 Stroke | Engine Displacement: 457cc | Frequency: N/A | Tank Volume: 8 Gallons | Runtime: 12 Hours | Warranty: N/A

Best Dual Fuel Generators Comparison Table

ProductDimensionsWeightPower SourceIgnition System TypeVoltageEngine TypeEngine DisplacementFrequencyTank VolumeRuntimeWarranty
DuroMax XP12000EH30″ x 29″ x 26″224lbsGasElectric Start240V4 Stroke457cc60 HzN/A8 Hours1 Year
DuroMax XP4850EH24″ x 17″ x 17″122 lbsGas, PropaneStart-Camping120V4 Stroke210cc60 Hz4 GallonsN/A1 Year
DuroMax XP4400E24″ x 17″ x 17″127 lbsGasElectric120V4 Stroke210cc60 Hz3.96 GallonsN/AN/A
Firman H0365127.9″ x 18.1″ x 20.5″119.5 lbsGas, PropaneElectric Start120V4 Stroke208cc60 Hz‎5 Gallons‎14 Hours3 Years
Pulsar G12KBN-SG‎28.5″ x 26″ x 25.5″209 lbsGas, Liquid PropaneElectric Start120-240V4 Stroke457ccN/A8 Gallons12 HoursN/A

Buying Guide For The Best Duel Fuel Generator

A good dual-fuel generator can keep you out of trouble on many occasions, but it is difficult to select a product that is a perfect fit. We are here with tips to select one which will fit your requirements and guarantee that you do not miss out on an important feature. Note down your reasons to buy one before proceeding, as that would be helpful in choosing a device. 


It is very important to understand your power needs. If you want a machine for large devices that consume a lot of power, it is essential to buy one with a bigger capacity and more wattage. 

In case you need a machine just as a backup, and for a smaller home, a gadget with less wattage capacity will suffice. A smaller device will cost less, and thus you should always measure out your needs.

Weight and Wheels

The weight of the generator decides how portable it is. Now, if a gadget is needed at home for emergencies or power backup, a heavier device or one without wheels will not be a problem. This is because you would not need to be moving it too much. 

On the other hand, if you are planning to take it around on camping trips or RVs, a compact gadget is a must. A heavy machine will be difficult to lift or carry up and down trucks or rocky surfaces where wheels would not ply. 

Wheels are essential when it comes to smooth or slightly rough terrains where the device can be moved. It is a must for professionals working at construction sites as portability is a major factor in such cases. 

Noise level

The noise may not seem like a major factor while buying, but trust us, it can be a hindrance later. Devices that are too noisy may work at construction sites or in open spaces, but if they need to be used indoors, it becomes a hindrance. It has the ability to disturb not only your family members but neighbors too. 

So we would recommend you to analyze your needs and then select a device with a certain noise level. 


The size is an important factor, especially if you have a small home or limited space in your vehicle. Make sure you note your needs and accordingly get the most compact device available, 

Though a massive device may have the best of features, it may end up being too large to be carried around. Thus the purpose is not met. Also, check out the storage space that you have available in case you are not planning to use it often.

Dual Fuel Generator FAQs

  • What are the advantages of using a dual fuel generator?

    The advantages of using a dual fuel generator include:

    • Fuel flexibility: You can switch between gasoline and propane depending on availability and your specific requirements.
    • Extended runtime: With dual fuel capability, you can run the generator for a longer time by switching to an alternative fuel source when one is depleted.
    • Lower fuel costs: Propane is often cheaper than gasoline, so using propane as a fuel can help save on operating costs.
    • Cleaner emissions: Propane produces fewer emissions compared to gasoline, making it a more environmentally friendly option.
  • How noisy are dual fuel generators?

    The noise level of dual fuel generators can vary depending on the model and brand. Some generators are designed with noise-reducing features such as mufflers to minimize noise output. However, it’s important to check the noise level specifications of the generator before making a purchase, especially if you plan to use it in noise-sensitive environments or indoors.

  • Can I use a dual fuel generator indoors?

    It is generally not recommended to use a dual fuel generator indoors unless it is specifically designed and approved for indoor use. Generators produce exhaust gases, including carbon monoxide, which can be harmful or fatal if inhaled in an enclosed space. If you need to use a generator indoors, make sure it is placed in a well-ventilated area and follow all safety guidelines provided by the manufacturer.

  • How do I maintain a dual fuel generator?

    Proper maintenance is essential to keep your dual fuel generator running smoothly. Here are some maintenance tips:

    • Regularly check the oil level and change the oil as recommended by the manufacturer.
    • Clean or replace the air filter as needed to ensure proper airflow.
    • Keep the generator clean and free from dirt, debris, and dust.
    • Test the generator periodically to ensure it starts and runs properly.
    • Store the generator in a dry and protected area when not in use.
    • Follow the maintenance instructions provided in the user manual for your specific generator model.
  • Can I use my dual fuel generator for sensitive electronics?

    Dual fuel generators can be used to power sensitive electronics, but additional precautions may be

  • Conclusion

    When it comes to choosing the best dual-fuel generators, three standout options emerge based on their unique features and performance. The DuroMax XP12000EH Dual Fuel Portable Generator is an ideal option for RVs and camping, offering exceptional power and reliability. For backup power needs, the DuroMax XP4850EH Dual Fuel Portable Generator is a good choice, providing affordability and dependable performance.

    Lastly, the DuroMax XP4400E Gas Powered Generator is the right pick for portable power, with its battery compatibility and easy mobility. Consider these top-rated generators to meet your specific power requirements and enjoy a seamless and uninterrupted power supply in various situations.

    A portable dual-fuel generator is the need of the day, be it a workspace or your home. And we are confident that with all the information mentioned above, you are ready to choose one. Happy shopping!

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