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The 6 Best Dual Fuel Generators Reviews and Buying Guide


Dual fuel generators are basically electrical generators that can use two different fuels for generating electricity. Generally, dual fuel generators use gasoline and propane as primary fuels to generate power. Gas is pretty easy to obtain as it is easily available. But, it has some disadvantages such as high noise and more fumes production. Propane, on the other hand, is much cleaner and quieter in terms of power generation. Before buying a dual fuel generator, keep the following things in mind:

  • Fuel Capacity: As dual fuel generators are dependent on fuel, there is a fuel tank in every generator. This fuel tank has a certain capacity that indicates the amount of fuel that can be put in the generator at once. Obviously, a higher capacity tank will not require a refill for a longer time.
  • Power Output: Power output of a dual fuel generator is provided in watts. There are 2 different output ratings available that are rated output and peak watts. The rated watts are basically the general power output, whereas the peak output is the maximum output available at a certain time.
  • Noise Level: Every fuel base machine creates a certain amount of noise as there is constant combustion of fuel inside the cylinder. Now, you cannot completely eliminate the noise in a dual fuel generator. But, you can always choose the one that makes the least amount of noise.

Today, we are presenting the best dual fuel generators available in the market right now. You can take a look at our top picks and also learn about their important properties and get all the necessary information. You can also find a detailed “Buying Guide” down below to help you understand dual fuel generators a bit better. Therefore, make sure you read the article completely to make a perfect choice.

Best Dual Fuel Generators

6 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.

At the 1st position, we have a heavy-duty dual-fuel power generator from Westinghouse. It is the most powerful generator from our list as it is capable of providing 9500 running watts and 12500 peak watt output on gas. It also has a very good output on propane that is 8500 running watts and 11200 peak watts.

You can put up to 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. It features various outlet ports, including 2 GFCI 120 volts ports,  5 standard household receptacles, 1 120 volts L5-30R outlet, 1 transfer switch ready 120 volts L14-30R, 1 RV Ready 120/240 volts, and 2 5 volts USB Ports. There is 1 year of manufacturer’s warranty period on Westinghouse WGen12000DF.

Best Features:

  • 9500 running watts and 12500 peak watts on gas
  • 8500 running watts and 11200 peak watts on propane
  • 6.6-gallon fuel tank capacity
  • 2 GFCI 120 volts ports
  • 5 standard household receptacle ports
  • 1 120 volts L5-30R outlet
  • 1 transfer switch ready 120 volts L14-30R
  • 1 RV Ready 120/240 volts outlet
  • 2 5 volts USB Ports
  • 1 year warranty period


  • Power capacity is highest in comparison
  • Fuel capacity is pretty high


  • Very expensive fuel generator
  • The warranty period is too short regarding the price

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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.

In the 2nd position, we have another heavy duty dual fuel generator from Duromax. This generator is powered by an 18 HP 456 cc OHV Duromax engine that is capable of 9500 running watts and 12000 surge capacity. You can either use gasoline or propane as the fuel; you will be getting almost similar power output.

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 1 X 240 volts, heavy-duty outlet, 1 X 240 volt 30 amp twist lock socket, 1X 120 volt twist-lock socket, and 2X 120 volts 20 amp household outlets. There is only 1 year of warranty on this product from Duromax.

Best Features:

  • 9500 running watts and 12000 peak watts outlet
  • Powered by 18 HP 456 cc OHV Duromax engine
  • 3-gallon fuel tank capacity
  • 1 240 volts heavy-duty outlet
  • 1 240 volts 30 amp twist lock socket
  • 1 120 volts twist-lock socket
  • 2 120 volts 20 amp household outlets
  • 1 year warranty period


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


  • Only a few outlet ports available
  • The warranty period is too short

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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.

At the 3rd position, we have a highly reliable dual-fuel power generator from  Champion Power Equipment. It is powered by a 4 stroke, 224 cc engine, and has decent fuel efficiency. There is a push-button electric start for convenient usage. It is capable of providing 3800 running watts and 4750 watts maximum id required. With 1 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 1X120 volts 30 amp RV (TT-30R) port, 1 X120 volts 30 amp locking (L5-30R) port, and 2 X120 volts 20 amp household outlets. As we mentioned earlier, it is the most reliable option for our list as it has a long 3 years of the manufacturer’s warranty period.

Best Features:

  • 3800 running watts and 4750 peak watts on gas
  • Powered by 4 strokes 224 cc engine
  • Push-button start
  • Good fuel efficiency
  • Up to 9 hours run time
  • 4-gallon fuel tank capacity
  • 1 120 volts 30 amp RV (TT-30R) port
  • 1 120 volts 30 amp locking (L5-30R) port
  • 2 120 volts 20 amp household outlets
  • 3 years warranty period


  • Warranty period is pretty long
  • Engine efficiency is good


  • Only 4 outlet ports are available
  • Fuel tank capacity could be better

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4. 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. You can get up to 8300 watts running watts and a maximum of 11000 watts output on gasoline. On the other hand, it is capable of providing 7500 running watts and has 9500 watts surge capacity for propane. All this power is fueled from a 6.6-gallon fuel tank that will allow you to have around 8.5 hours of nonstop usage.

If you take a look at the front, you will see that it has 2 X120 volts 20 amp AC ports, 1 X120 volts 30 amp twist lock AC port, 1 X120/240 volts 50 amp NEMA L14-50R AC port and 1 X12 volts DC outlet. You can fire up its 457 cc 4 strokes OHV engine with a single push-button given on the front. You will be getting 2 years of warranty that is much better than other options.

Best Features:

  • 8300 running watts and 11000 peak watts on gas
  • 7500 running watts and 9500 peak watts on propane
  • 6-gallon fuel tank capacity
  • 5 hours of backup in a single run
  • 4 strokes OHV engine
  • Push button to start the engine
  • 2 120 volts 20 amp AC ports
  • 1 120 volts 30 amp twist lock AC port
  • 1 120/240 volts 50 amp NEMA L14-50R AC port
  • 1 12 volts DC outlet
  • 2 years warranty period


  • Good option for heavy applications
  • Fuel capacity is sufficient


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

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5. 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. Being the cheapest option from our list, it is capable of providing 9500 running watts outlets and 12000 surge capacity on gasoline. Ther performance on propane is also pretty good as it gives 8550 watts running watts and capable of 10800 watts peak capacity.

It is powered by a 4 stroke OHV air cooled 457 cc 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 can be utilized by 4X120 volts AC outlets, 1X120V/250V 50amp outlet, 1X12V DC outlet and 1X120/240 volts twist-lock outlet. It is backed by 1 year of warranty from Pulsar that is understandable at the minimal price tag.

Best Features:

  • 9500 running watts and 12000 peak watts on gas
  • 8550 running watts and 10800 peak watts 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
  • 4 120 volts AC outlets
  • 1 120 volts 50 amp outlet
  • 1 120/240 volts twist-lock outlet
  • 1 year warranty period


  • Cheapest option from the list
  • Pretty good power output


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6. Sportsman Dual Fuel Generator


At last, we have added a dual fuel generator from Sportsman on our list. You might not have heard about the brand before, but it has a very high rating from customers.

In the end, we are giving you yet another option for a general application dual power generator. Sportsman GEN4000DF has a moderate power output of 3500 watts along with a peak capacity of 4000 watts. This much power is good enough for any small application. It houses a 212 cc OHV engine, which is fueled from a 3.6-gallon fuel tank.

You can get up to 10 hours of continuous usage if it is run at a 50% load on gasoline. Even with the moderate power supply, it has a number of different ports that include 4X120 volts outlets, 1X 120V RV outlet, 1 X12 volt DC outlet for battery charging. It is a pretty lightweight generator weighing only 90 lbs.  You will be getting 1 year of the warranty period from Sportsman.

Best Features:

  • 3500 running watts and 4000 peak watts on gas
  • 6-gallon fuel tank capacity
  • 212 cc OHV engine
  • Up to 10 hours of backup if run at 50% load on gas
  • 4 120 volts outlets
  • 1 120V RV outlet
  • 1 12 volt DC outlet
  • 1 year warranty period


  • Price tag is pretty reasonable
  • Multiple ports available


  • Power output is a bit low
  • Warranty period is short

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Buying Guide For The Best Dual Fuel Generator

Now that you have finished reading about all of our picks for the best dual fuel generator, you must know a lot about them. You also might have considered a couple of options already. But, while choosing a dual fuel generator, you have to thoroughly study its properties and compare its importance regarding your application.

There is a high chance that some features available in a certain product will not be needed in your case at all. To avoid such a problem, we are providing this comprehensive buying guide. Here, you can read about each of the properties in detail and decide what you need in your dual fuel generator the most. Make sure you read the buying guide completely for accurate selection.

1. Fuel Capacity

As dual fuel generators are powered by gasoline and propane, they have dedicated fuel tanks to store fuel. Not all the fuel tanks are the same as each tank has its own capacity. This capacity is given in gallons. For example, a 10-gallon tank can hold 10 gallons or less of fuel at once.

Having a high capacity tank will be advantageous for you in many ways. If you have a large fuel tank, you won’t have to worry about refueling the generator every now and then, and you can enjoy uninterrupted power output. Keep in mind that large fuel tanks are only available with premium options.

2. Rated and Peak Output

As you are buying the generator for power backup, you must pay attention to the power available at the output of the generator. You will find 2 different output ratings on each dual fuel generator, which are rated and peak output. But these values differ for gasoline and propane. Therefore, you will find 4 different output values on each generator.

This can get confusing, but you don’t have to worry. If you only consider the peak capacity of the generator for both fuels while buying the generator, you will automatically get a higher running watts output. For example, if you opt-in for a high peak value for gasoline, you will automatically get a higher peak value for propane and higher running watts as well.

3. Generator Size

This can be a major aspect if you wish to move the generator around for different applications. If you are considering a heavy-duty generator, then make sure you take the size and weight of the generator into consideration.

Mostly, heavy-duty generators are bulkier and heavier in comparison with the low powered ones. Hence, moving a heavy-duty dual fuel generator, especially when the fuel tank is full, can be a challenging task. On the other hand, if the generator is compact in size, you will notice that the power capacity, as well as fuel capacity, will be lower.

4. Noise Levels

Dual fuel power generators are powered by internal combustion of gasoline or propane. As this combustion is a continuous process, there is a significant amount of noise produced by generators while they are in operation. It is impossible to find a fuel generator that is absolutely quiet in operation. But,  you can definitely opt-in for a lower noise rated dual fuel generator.

If the generator is making an unbearable amount of noise, it can create a lot of disturbance that will, in turn, affect your application. Hence, you should always consider a generator that has a lower noise rating. Also, keep in mind that if you are going to use propane as your primary fuel, you won’t have to worry about sound levels as much because propane performs silently.

5. Engine Efficiency

Each dual fuel generator houses an engine that is used to burn the gasoline or propane to generate energy. While many power output ratings might seem similar, the fuel consumption will change because of engine efficiency. The engine efficiency basically represents how efficiently the fuel can be consumed to produce energy.

If the engine is not efficient, you will run out of fuel pretty fast. Also, you will face a lot of harmful exhaust gases caused by the improper burning of the fuel. Hence, even if you are going for a low power engine, make sure that it is efficient in terms of fuel consumption.


A dual fuel generator can be a lifesaver if there is a sudden power cut. The major advantage of a dual fuel generator is the option to use a secondary fuel in case you don’t obtain the primary fuel around you. There are a lot of different dual fuel generators available in the market. Hence choosing one of them can be a tedious task.

Therefore, we have created this list of the best dual fuel generators for you. You can also find a buying guide to help you with your purchase. In case you are still wondering which one of the above options is the best for you, you can take a look at our recommendations below:

  • At first, we will recommend you Westinghouse dual fuel generator as a heavy-duty option. This generator is capable of providing 9500 rate watts and output, and it has 12500 peak watts capacity. The fuel tank is pretty big as it can intake 6.6 gallons of fuel at once. You will get 1 year of warranty which can be extended according to your need.
  • Now, if you are on a tight budget, you should select Pulsar dual fuel generator. Being the most budget-friendly option from our list, it can provide up to 4250 watts rated output, and it has a 5250 watts surge capacity. The available fuel intake is only 4 gallons. You will get 1 year of warranty from the manufacturer on this generator.
  • Lastly, we will suggest you Champion power equipment Dual Fuel generator. It is the most reliable product from this list as it gives you a long 3 years of the warranty period. It is also pretty powerful as you can get 3800 rated watts outlet and 4750 peak capacity.

Make sure to share your thoughts in the comments section. You can also post any questions down there if you have any!


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