A Look At The Top 5 Dual Fuel Generators

A dual fuel generator allows you to use two different types of fuel to fuel one generator, as you might have guessed! A dual fuel generator usually accepts either gasoline or propane gas as fuel sources. Ever since the generator was initially invented, it has helped people all over the world overcome power losses, be that in their home, their business, or when in remote areas. Generators, like all other products, are constantly advancing and becoming more technical. Today, there are now generators that offer the ability to be fuelled with all 3 main fuels – gasoline, diesel, and propane gas (also known as LPG).

On the vast majority of dual fuel generators, either fuel type can be used, assuming both are connected. They can be easily switched between at any time. Gasoline is great, but so too is propane. Each has its advantages over the other. Propane, for example, is a clean fuel that leaves no carbon deposits when burned. It’s also not as expensive as regular gasoline and often runs more quietly too.

Whilst a dual fuel generator is great, a tri-fuel generator could be even more suitable if you aren’t sure about which fuel you’re most likely to have readily available at any one time. They provide the assurance that assuming you have some type of fuel, you’ll always have access to power. They are a relatively new phenomenon in the power generation world, and the market for them, therefore, is growing more quickly than ever.

In this post, we’re going to have an in-depth look at 5 dual fuel generators that we believe to be the best available. Included will be a wide range of models that cater to different needs, such as camping, RV use, and those that are better for use with heavier machinery and appliances. The main points that we’ll look at when reviewing each generator are how efficient the generator is, how refined it is (whether or not it’s quiet), how powerful it is, how portable it is, and finally the quality of the power which it outputs.




Most Affordable – Sportsman GEN4000DF

The Sportsman GEN4000DF is a generator that can be fuelled by your choice of gasoline or propane gas. It’s intended to be used in rough environments such as building and construction sites. It’s very durable and has a solid construction. It’s a dependable source of portable power.

With the GEN4000DF, it’s very easy to switch between gasoline and propane. There’s a switch on the generator and, assuming both fuels are connected, they can be very easily “switched” between.

The GEN4000DF is able to output different levels of power, depending on which fuel is connected at the time. When being fuelled by gasoline, you’ll get a maximum wattage of 4000 watts. Propane, on the other hand, will only manage 3600 watts. Standard gasoline will give out 3500 continual watts of power, and propane is able to output a continuous 3150 watts of power.

The gas tank on this Sportsman GEN4000DF is 3.6 gallons in size. When the generator’s running on standard gasoline, it will keep running for almost 10 hours dependant on the load that it’s under.

If the GEN4000DF is connected to a propane cylinder that’s the standard 20lbs, it will give out power for up to 12 hours when being used at 50% capacity.

It’s equipped with safety features such as a low oil level detection and warning system that will automatically halt the operation of the engine to avoid any long-term damage. It’s a great generator for use in the outdoors, for camping, or for events that you just need some portable power that’s quick and easily accessible.


Key Features

  • High powered – the GEN4000DF will put out a continuous wattage of 3500 watts, and has a starting wattage of 4000 watts.
  • 3600 watts of starting power and 3150 watts of continuous power provided when running on propane gas.
  • Low oil level detection and automatic shutdown system
  • A large variety of power outlets, including 4 standard household sockets, an RV-Ready port, and a DC socket.



  • No warnings of low fuel
  • No wheel kit or other easy transportation methods provided as standard



Most Powerful – Duromax XP12000EH

The DuroMax XP12000EH is an absolute beast of a generator. It’s dual fuel, and will privde a very large power output on either gasoline or propane gas.

It has available a maximum power output of a massive 12,000 watts and a continuous power output of  9,500 watts when burning regular gasoline. If the unit’s being run on propane gas, it’s still able to provide a huge peak power of 10,200 watts, and continuous power of up to 8075 watts.

With 12,000 watts of peak power available, it can run the large majority of appliances or tools that you might want it to. If your house were to suffer a power loss, the XP12000EH would be able to comfortably keep a number of both larger and smaller appliances powered up. If you’d like to use it in this way, it can be conveniently connected to the mains of your house using a transfer switch.

The XP12000EH is encased in a heavy duty, well-constructed steel casing. It’s fitted with 4 mounting points that are designed to make it as easy as possible to position it as securely and as safely as possible wherever you may be using it.

The XP12000EH is fitted with wheels that are both heavy-duty and tough, They’re designed for constant hard use, and are ideal for helping move the generator over uneven grounds.

On the front of the XP12000EH, there is a control and information panel that provides information on the amount of power that the generator is outputting, as well as voltmeters, circuit breakers, and low oil detection lights.

Overall, the DuroMax XP12000EH a very refined and well-thought-out generator. It’s packed full of all of the features that anyone would expect from a high-end powerful generator such as this. It’s got electric start, automatic low oil level shutdown, and is soundproofed and muffled well so that it’s able to operate at 74 decibels. This is an incredible figure for a generator with a peak power of 12,000 watts.

It’s fitted power overload protection as well – the engine will be stopped should the unit start to become too hot.


Key Features

  • The unit’s 18hp engine is very powerful – it can be run on either propane or regular gasoline
  • Long runtimes – the 8.3 gallon gas tank enables nearly 10 hours of running power when operating with gasoline. A 40lb tank of propane gas provides up to 20 hours of usage, at 50% of the generator’s load.
  • DuroMax “Power Boost” enables easy flicking between the 120V or 240V power outputs.
  • Low oil warning and automatic shutdown
  • 10,200 watts of peak power from propane
  • 12,000 watts of peak power from gasoline
  • 3-year warranty



  • Known to leak oil after starting the engine
  • Some users report slow customer care when dealing with some issues


The Longest Runtime – Pulsar PG10000B16

The Pulsar PG1000B16 is a dual fuel generator that comes with a truly exceptionally long runtime. When the generator is being powered by gasoline, it’s able to output a maximum wattage of 10,000 watts, and 8000 continuous watts of power. When being fuelled by propane gas, it’s got a maximum wattage of 9000 watts, a continuous power output of 7000 watts.

Should your home lose power for any reason, the PG1000B16 is more than enough power to keep major appliances and electricals on the go. It’s got a great runtime of 12 hours on gasoline when being used at half of its capacity. The runtime on propane is longer too. The 10,000 watts of power that this generator offers is easily capable of powering large appliances, and garden machinery.

The efficient yet powerful 15hp engine is encased within heavy duty steel. It’s also got a wheel-kit that has strong and durable tires, meaning it can be easily moved over rough and jagged terrain without the worry of punctures. This makes the PG1000B16 truly very portable.

The unit can be started easily by either the traditional pull start that it’s fitted with or indeed an electric start button. On the control panel, there’s also a selector switch which allows you to change seamlessly between either propane or gasoline. The Pulsar PG1000B16 is one of the few generators on the market that allow you to switch which fuel is being used without turning off the generator’s engine.

The PG1000B16 is fitted with a number of features that make this generator as safe as it can be. It’s protected against fire and overheating by the circuit breakers that it has installed. The generator is also protected against overloading, with the overload protection that it has installed.

Should the oil level in the PG1000B16 become so low that it could start causing damage to the engine, it has a system installed that automatically detects when this low oil level is reached, and will automatically halt all operation of the generator until the oil level is topped up.

This generator can be used anywhere in the USA too, due to the fact that it is CARB compliant. This means that it puts out minimal emissions, and is as good for the environment as is possible.


Key Features

  • Well-designed control panel – the PG1000B16 is very easy to use and control, with well-placed power meters and low oil level indicators
  • Long runtimes – up to 12 hours when being used at 50% load on gasoline, and even more when being fuelled by propane
  • Large selection of power outlets – the generator has four 120v outlets, an RV-Ready 50 amp socket, a 120V/240V 30A Twist-Lock socket, as well as a smaller 12V DC outlet. All of these make the PG10000B an ideal generator for powering a large variety of different types of appliance at the same time.
  • Maximum starting wattage of 10,000 watts when being powered by gasoline
  • Maximum starting wattage of 9000 watts when being powered by propane
  • More than capable of powering larger appliances around the house should you lose power



  • Quite loud when operating at higher speed
  • Power output said to be variable by some users


The Most Durable – Ford FG7750PBE

There’s no doubt that you’ll know Ford from their massive presence in the automotive industry. However, forward have also used their vast knowledge from many years in the automotive industry and applied it to power generation. They teamed up with Pulsar to make the Ford FG7750PBE.  This generator is a very powerful generator that’s built to be durable, as well as that and weather-resistant.

It’s fitted with a four-stroke, 420cc single cylinder engine. It’s efficient and has a maximum power output of 7750 Watts. It will provide continuous power thereafter to a wattage of 6250 Watts.

This Ford generator is also equipped with a low oil detection and automatic shutdown system. Should the oil level get too low, this system will detect that and shut down the engine automatically in order to prevent any serious engine damage taking place. It is clear that the knowledge Ford has gained from the automotive industry has been applied to this generator in full.

The FG7750PBE is also equipped with an electric start button, meaning you don’t need to constantly strain whilst pulling to start the generator. However, as a backup, there is also a recoil start option too.

The most interesting point of this generator is the rubber protection that surrounds it. All of the power outlets on the generator are covered with rubber flaps. This is there to guard them against bad weather, moisture, as well as dust and debris. If dirt were to get into the power outlets, it can be extremely damaging to the unit and cause it to malfunction. These rubber covers prolong the life of the generator, and also make it more suitable for use in areas where there are meant to be a large amount of airborne debris such as construction and building sites.

The FG7750PBE is fitted with a large number of different power outlets. It has four 120V standard outlets, as well as one 120-volt twist lock socket. In order to ensure safety when using the sockets, the generator is fitted with an automatic voltage regulator to guard against any power surges that might take place.

Whilst this generator from Ford is quite a heavy unit, it does come with a wheel kit fitted and it’s tires are designed to never go flat. This makes it extremely useful for moving over rough terrain and ground surfaces.

The running time of this generator is very respectable wear on gasoline as well as propane gas. If you’d like to know how much fuel you have left, or how much running time you have left, there is an informative digital display detailing these numbers on the front of the generator.

Durable, dirt and weatherproof – the FG7750PBE has rubber covers protecting all of the power outlets on it. This keeps the socket safe from moisture, dirt, and airborne debris that could be present.


Key Features

  • Very durable – all of the power outlets on this Ford generator are protected with rubber. It’s also encased in a heavy duty frame and is designed for hard and heavy usage.
  • Portable – comes fitted with a wheel kit that’s got tough, “never go flat” tires
  • Fuel gauge and hour meter – you’ll know both how much fuel you’ve got left in the FG7750PBE as well as how much time at the current power level you’re using
  • Maximum starting wattage of 7750 watts when being fuelled by gasoline
  • Maximum starting wattage of 73500 watts when being fuelled by propane
  • 2 year limited warranty



  • Not quite as well-known as its rivals



Best for Camping/RV – Champion 3800-Watt Dual Fuel RV Ready Portable Generator with Electric Start (76533)

The 3800-watt RV-ready Champion generator truly is a great power source for camping and for use alongside an RV. The more powerful generators that champion offer in this range are very highly rated, but so too are these are small or dual fuel generators. They offer all of the same high-quality features that you would get on one of Champions more expensive, more powerful generators, just in a small, portable and powerful package.

This dual fuel generator has a starting wattage of 4750 watts. It is able to provide continuous power of 3800 watts, which is more than enough for the vast majority if not all camping and RV use. It is also RV ready, being provided with a 120V 30A RV-socket.

Altogether, the Champion 3800-watt dual fuel comes with two regular 120V power outlets, a 120V RV-ready outlet, as well as another 120V locking socket. All sockets have got electrical surge protection too, meaning any appliances you have connected are protected against getting shocked.

This 3800-watt dual fuel generator has a single-cylinder engine that’s very highly rated by those that have used it. It can be easily started by an electric start button and is too easily started when the weather’s cold. It has cold tart technology by Champion installed.

It’s not a particularly heavy generator either at just over 100 pounds in advance. However, if you’d rather pull the unit along instead of lifting, it can be very easily done too as it’s provided as standard with wheels that don’t go flat, as well as a comfortable pulling handle.

It’s got a respectable runtime too, providing up to 9 hours of power when fuelled by gasoline, and 10 and a half hours of power from propane gas.

It’s got an automatic low oil level detection and shutdown, preventing long term engine damage as a result of the engine becoming burnt out. On the control panel is a gauge that informs you of how much power’s being output, as well as giving maintenance advice such as service advice.


Key Features

  • Camping and RV-Ready – fitted with an RV-specific 120V 30A socket
  • Electric start – no need to worry about constant recoil starts with this generator
  • Dual Fuel – the two fuels can be easily and quickly switched between
  • CARB Compliant
  • Well-priced



  • Could be more power outlets




The GEN4000DF from Sportsman is a very affordable generator. It’s able to provide 3500 watts of continuous power and is fitted with a lot of features that you’d find on far more expensive generators. Being dual fuel and lightweight, it’s ideal for camping and is very portable.

The Duromax XP12000EH is an extremely powerful dual fuel generator. It’s not referred to as “the beast” for no reason. It’s got every feature that you’d expect and is a very safe generator. It will cover your power needs in just about any circumstance – it’s as useful outside on a construction site as it is as a backup source of power for your home.

The Pulsar PG10000B is a generator that’s got a lot of power. It’s very capable and fuel efficient too, being able to run for up to 12 hours at half load when being powered by gasoline. It’s got a lot of power outlets and is the ideal choice if you’re looking for an efficient, well-priced generator.

The Ford FG7750PBE is a generator that might not be quite as well known as its rivals, but not to say that it isn’t just as good. It comes with a 2-year limited warranty and specializes in durability. All of its power outlets are covered with rubber to protect the generator from dirt and moisture. It’s the best choice for heavy duty outside work, where a lot of dirt could be involved.

The 3800-watt dual fuel generator from Champion is a good choice for camping. It’s small, powerful, and CARB compliant. It also outputs high-quality power that’s suitable for smaller more sensitive devices. If you’d rather not purchase a dual fuel generator for camping, you may also be interested in the Generac IQ2000.