7 Best Portable Dual Fuel Generators (Comparison & Reviews)

Gasoline is a standard type of fuel for generators, but it has certain shortcomings – it is more expensive. Diesel generators are often cheaper, which reduces operating costs, it can be stored indefinitely and it even reduces the noise level. Considering the peculiarities of these types of fuel, the optimal solution is to use a dual-fuel generator.

In this article, we have reviewed the best portable dual fuel generators, among which you will definitely find the right model.

This item has the best price and quality:

Our Top Pick
Champion Power Equipment 100307 4375/3500-Watt 

Champion Power Equipment 100307 4375/3500-Watt

This generator features Dual Fuel, allowing the 224cc engine to run on either gasoline or propane.

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The list of the other best portable dual fuel generators with a comparison of the main characteristics:

ItemDimensionsWeightWattageNoise Output
Champion Power Equipment 100307 4375/3500-Watt 

Champion Power Equipment 100307 

23.2 x 19.1 x 20 inches104.9 pounds3500 watts68 dBASee Best Price
DuroMax XP12000EH

DuroMax XP12000EH

30 x 29 x 26 inches224 pounds12000 watts

62 dBA

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Durostar DS4850EH

Durostar DS4850EH

24 x 17 x 17 inches132 pounds4850 watts

69 dBA

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Firman WH03041

Firman WH03041

29 x 19 x 19 inches109.8 pounds

3200 watts

52 dBASee Best Price
Sportsman GEN4000DFC

Sportsman GEN4000DFC

24.5 x 16.5 x 17 inches93.8 pounds4000 watts69 dBASee Best Price


24 x 17 x 17 inches 127 pounds4400 watts50 dBASee Best Price
Mech Marvels 4000 Watt

Mech Marvels 4000 Watt

24 x 19.1 x 20 inches105.4 pounds1500 watts52 dBASee Best Price

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Champion Power Equipment 100307 4375/3500-Watt

Champion Power Equipment 100307 4375/3500-Watt It is a universal power generator. It can act as an alternative to the central power supply in an emergency situation. The device is very easy to use and easy to maintain.

It is necessary to supply power to various power tools or equipment. This generator is suitable for use in domestic and industrial applications.

The model belongs to the Master line series of generators, so its class is quite high. It comes with the most modern engine. This is a professional motor, which shows an incredibly high result in the work.

To work in the harshest conditions, it is possible to start the generator not only with a manual starter. It also comes with an electro starter system. The system itself is very easy to use. It allows you to start the engine by turning the key, especially for inexperienced users.

The fuel tank is of quality steel, resistant to mechanical stress. The tank has an anti-corrosion coating on the inside. It will protect it from rotting.

Advantages of the model:

  • Holds 0.6-quarts of oil
  • Has a low oil shut-off sensor
  • Keep track of voltage, hertz, and run-time hours
  • Easily monitor power output and track maintenance intervals

Besides working on gasoline, this generator can also use propane or butane as fuel. When working on gas, the fuel economy increases, as well as the number of hazardous substances emitted decreases. The motor resource is also increased almost twice.

This model has an automatic output voltage regulation system. This allows you to achieve a stable generator operation regardless of the intensity of the load.

The copper winding allows achieving the highest possible quality in operation and the quality of the generator as a whole. This alternator is well suited to withstand loads. Copper guarantees a high heat output. So that the device does not overheat during continuous operation. It is also worth noting the overload and overheats protection systems. It will ensure stable and uninterrupted operation of the plant.

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DuroMax XP12000EH

DuroMax XP12000EHThis generator is a universal device that you need to provide a small residential building.

This generator is remarkable for its hybrid engine, which can run on both gasoline and gas fuel. Such a system is very convenient, besides, it is very practical.

The work of the generator is provided by a quality four-stroke engine, which runs on gasoline or gas.

To change the working mode, it is necessary to switch the fuel flap after switching off the generator. After that, it will be ready to start again. The generator, regardless of what fuel it works on, retains its performance characteristics.

Advantages of the model:

  • Powerful Duromax engine
  • Plenty of power
  • Low oil shut-off 
  • Idle control

The frame of this generator is welded and reinforced with extra seams. This makes it very reliable and gives the largest benefits to the generator itself. It serves to protect its components from mechanical damage. This feature also allows for easy handling and transportation of the station. It contributes to the rigidity and stability of the entire plant.

The high-quality alternative provides an output voltage of at least 220 V, the deviation does not exceed 1%. It itself is a brush, so it shows itself well at peak loads.DuroMax XP12000EH 2

Such a generator is very practical, to work on the gas you need to turn it directly into the gas pipeline.

At the same time, engine wear is minimal. In case of a gas supply failure, you can quickly switch it over to work with gasoline.

The generator does not lose power to gas, does not produce caustic emissions, and is less noisy. As a small and economical reserve, this indicator is one of the most popular.

For a small house, it is enough to power the main electrical devices during a power outage. There is a synchronous alternative of pure copper.

The device has a convenient electric starter to start, built an excellent voltage regulator. The display shows the process of electricity generation in real-time. It also monitors the number of hours worked. All these characteristics do not change when switching to gas. Thus, the duration of operation increases.

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Durostar DS4850EH

Durostar DS4850EH This is a dual-fuel universal generator for home use. The generator is on a high-performance and reliable engine. It is to work with such equipment.

The engine itself has a large power reserve. This allows it to work freely in any load range of the generator. It has protection from thermal overload.

It has an emergency shutdown system. Air cooling controls the temperature balance of the engine block. You can start this station by a manual starter or in an even simpler way. You can do it with an electric starter.

The four-stroke engine comes with an oil level sensor in the crankcase. It is necessary to switch off the station in time if there is not enough oil. Such a system increases the life of the engine, and also ensures safe operation of the station.

Not only gasoline but also gas will be suitable as fuel. And gas can be methane, propane-butane, natural, or household gas.

Advantages of the model:

  • Provides plenty of power to handle multiple jobs
  • Includes a selection of outlets for maximum compatibility
  • Comes with a low-oil shut-off Sensor to protect the motor
  • Can be stored for years without going bad

Besides, this modern generator comes with a quality synchronous alternator. It promotes stable voltage regardless of load or engine speed. It has impressive operating resources thanks to the quality heat output and wear resistance of the copper winding.

The fuel system Dual Fuel allows the use of liquefied propane or butane gas as a power source in addition to gasoline. The gas is almost completely oxidized in the engine combustion chamber. As a result, less toxic emissions are generated during operation.

Engine life is increased up to 1.5 times. Savings in the cost of operation of the dual-fuel generator relative to petrol analogs reach 50-65%. The fuel tank comes with a fuel level sign system. It increases operation time without refueling by 20% due to increased size.

Special matte paint coats the fuel tank. It comes with high resistance to corrosion and chemical attack. An improved air filtration system protects the engine from overheating and dust ingress.

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Firman WH03041

Firman WH03041This gasoline-gas generator is stable and efficient in operation. It will become indispensable for connecting various tools and equipment. The station is convenient and easy to use. It does not need any permanent maintenance or careful self-care.

The generator runs on gasoline as well as gas. It is especially convenient when working in harsh conditions.

When connecting the generator to the gas pipeline system, as well as liquefied, you can also connect the generator to cylinders.

The electric system will allow starting the engine by turning the key. In the case of the starter failure, there is a classic manual starter. It is also effective with an easy startup system. It does not need much effort and has minimal rope resistance.

The quality of the generator operation and its long service life are ensured by the copper winding of the stator and rotor. It serves twice as long as the aluminum winding. Its performance characteristics are considerably higher than those of aluminum.

Advantages of the model:

  • Its cover is durable, water-resistant, and made of heavy-duty vinyl
  • The idle control allows you to save fuel
  • Is highly unlikely to overheat
  • Comes with an extended propane hose

The output voltage is stabilized by the AVR unit. This is due to the absence of spikes and interruptions in the power supply. It is possible to connect sensitive equipment to this generator without any fear.Firman WH03041 2

The connection of 12 V consumers is made through the contacts on the front panel. This output allows you to charge the batteries as well as work with some devices. The connection method is quite simple and does not need any extra tools.

The engine must work with oil, it is filled separately from fuel in the crankcase. There is an oil level control system in place to prevent the engine from running without oil.

If the level drops to a critical point during generator operation, the sensor will trigger. Then, the engine will automatically shut down.

The generator is very economical. With its power and volume of fuel, it is able to work in autonomous mode for up to 9 hours without refueling.

Due to dampers between the engine and the generator frame, the noise level in the station operation is low. Besides, the vibration background is also reduced. It ensures reliability in operation, as well as the rigidity of its installation.

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Sportsman GEN4000DFC

Sportsman GEN4000DFCThis is a reliable and economical generator. It can provide even an entire house with quality electricity. The power of the generator is enough to withstand a high load.

The quality work of the station is determined by its engine. Such a powerful engine guarantees stable operation at any load. A spacious tank and low fuel consumption of the engine guarantee long work at one filling station.

The engine of this gasoline generator is capable of running on two types of fuel. This will allow you to save on fuel and simplifies the operation of the generator itself. You can easily switch operation from gasoline to gas. When working on gas, liquefied gas in cylinders is used.

Advantages of the model:

  • Moderate run time
  • Six available outlets
  • Clean fuel burning
  • Doesn’t hold the most fuel

The engine is economical and produces all the fuel without residues. The OVH system makes the generator not only economical but also more productive. The engine here has high efficiency of fuel combustion and a high coefficient of thermal balance.

There are two ways to start this generator. For example, the manual starter, by pulling out the starter cable, and starting is easy, without any effort. It can also be started by means of an electric starter. The presence of the electric starter will allow you to quickly start the generator even in the winter season.

At all stages of production, the quality standards are thoroughly checked. Thus, this model fully complies with modern European standards. The heart of the unit is represented by a powerful engine with overhead valves. It ensures durability and efficiency.

The model has a reduced level of noise and vibration during operation. It has a positive impact on the comfort of operation. With this unit, a stable power supply can be arranged quickly and easily.

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MEE TONG SHOP DuroMax XP4850EH This generator is advantageously different from its analog models. It has the ability to run on gas as well as gasoline, depending on the need.

This gasoline generator has a reliable and trouble-free operation. It has a long operating time at one filling station at a normal load. This allows using it as a reserve and permanent power source.

Depending on what fuel you intend to use to operate the generator, you can quickly and easily switch to work with gasoline or gas.

When running the generator on gas, you should consider not only the efficiency of the generator. When working with such fuel, the engine’s motor resource increases significantly. Everything necessary to connect to the cylinder is complete with the generator.

Advantages of the model:

  • Copper windings for longevity
  • Full metal design
  • GFCI protected household outlets
  • Is an ideal cleaner source of fuel

The motor here can easily withstand any load. It can also provide the generator with reliable operation. It is reliable, very economical, and has an increased service life.

This generator comes with a manual starter. But, thanks to the easy startup system, you don’t have to put too much effort into pulling its cable. Thus, you can start the generator as easily as you would start the model with the electric starter.

The machine runs reliably in all load ranges. Even if the engine overloads, the protection is triggered. It will then shut down to prevent its failure. It also has protection from operation with insufficient oil in the crankcase. The output voltage stabilization system is necessary for quality generator operation. It will make it possible to confuse even sensitive units of machinery and equipment.

The enlarged fuel tank allows to power the electrical equipment without refueling for a long enough time. It is possible to equip the model with wheels and handles for easy transportation.

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Mech Marvels 4000 Watt

Mech Marvels 4000 Watt This dual-fuel generator is a series of professional equipment.

This model has more mobility and convenience in use. It is also worth paying attention to the fact that it is quite easy to use in itself. It is quickly and easily connected to the cylinder and is fully ready for use.

This device comes with a gas reducer. It provides normal operation of the station when connecting the cylinder. It prevents leakage and also regulates the flow depending on the operating mode and turns it off when the station stops working.

Due to the use of a hybrid engine, the presented model has a significant advantage in operation. It is possible to work with both gas and gasoline.

So, depending on the circumstances, you will have complete freedom of fuel choice. Regardless of the fuel, the generator will work equally stable and productive.

This generator works on the basis of a modern engine with a top-valve gas distribution system. It provides quality thermal balance and stable operation in any load range. What’s more, the engine also helps to increase the service life. The engine runs quieter than its analogs. It will emit less exhaust due to full fuel production.

Advantages of the model:

  • Runs on gasoline or liquid propane fuel
  • Gives you flexibility while out on the road 
  • Its engine delivers maximum performance
  • Regulator hose kit included

Please note that this station has an electric starter. It is a simple startup system, which allows you to quickly start the generator at any time. A manual starter is provided as an emergency starting method. The “easy start” system ensures its easy use.

For comfortable work with the generator, all necessary indicators of its status are on the panel. You will know in time whether your station needs to be serviced or an emergency situation has occurred. The panel also displays a convenient connection point 220V and DC connection points.

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FAQ for portable dual fuel generators buyers:

What is a dual fuel generator?

Dual fuel generators use two different types of fuel (most often diesel and natural gas) at the same time. In most cases, a dual fuel generator will need to start on diesel alone, as it has a much lower ignition temperature than natural gas.

Can a small generator power a house?

Portable generators can (and should) be connected to your home’s circuit breaker panel with a transfer switch or interlock device, which allows the generator to power an entire circuit rather than plugging in devices à la carte.

Can a portable generator power the whole house?

Portable generators for your house are affordable. They can back up essential appliances for less than $1000. In an emergency, a portable generator for house use is easy to operate. All you have to do is add fuel, start the engine, and run extension cords.

How often should you run a portable generator?

While these storage tips make a world of difference, it’s always best to start your generator every 30 days and allow it to run for a few minutes. Doing so will help keep components lubricated by circulating the oil throughout the engine.

How long do portable generators last?

Portable generators typically do not last as long as stationary generators. Depending on the quality of the engine, you can expect a portable generator to last between 1000 and 2000 hours. That means if you run your portable generator an average of 100 hours per year, it will last between 10 and 20 years.