Best Dual Fuel Generator in the Market 2021 Reviews


Best Dual Fuel Generator

Most people have a generator at home as a backup plan, but sometimes fuel runs out. Or you may have a propane tank, but the generator only runs with gasoline. It’s such a nuisance when these things happen, that’s why it’d be nice to have such a machine that can run on multiple fuel types.

Technology has now given rise to dual fuel generators. These are flexible and able to use whatever fuel source’s already at home – propane, diesel, gasoline, or natural gas.

This post will give you plenty of choices for the best dual fuel generators. We reviewed these things since they’re super important if you want to lessen the impact of an emergency.

Top Recommended Dual Fuel Generators

The dual-fuel or hybrid generators will save you when disaster strikes by keeping your daily activities, running with ease no matter what. Keep reading to learn more about them.

Product NameAC Output For 1st FuelAC Output For 2nd FuelRuntimeWeightNoise LevelWarranty
DuroMax Hybrid XP12000EH12,000 watts11,400 watts20 hours227 lbs72 dBa3 years
Champion 3400-Watt Dual Fuel RV3,100 watts2,790 watts7.5 hours95.7 lbs
59 dBa3 years
Pulsar Dual Fuel Portable Generator8000 watts7000 watts
12 hours209 lbs70 dBa2 years
Westinghouse Dual Fuel3,600 watts3,240 watts18 hours109 lbs68 dBa3 years
Sportsman GEN4000DF
4,000 watts3,500 watts
10 hours102 lbs69 dBa1 year

1. DuroMax Hybrid XP12000EH

DuroMax Hybrid Dual Fuel XP12000EH

The DuroMax Hybrid XP12000EH is what most would call a heavy machine that stands out from the rest. This generator is much more powerful and reliable than it looks. This generator runs on an 18 horsepower 457 CC engine to give you enough to run your appliances.

Other things to appreciate are the cast iron cylinder sleeves and the steel bearing that offer maximum durability. DuroMax XP12000EH is a nice generator that can keep your electrical appliances alive when there is a power outage.

The dual-fuel technology is a distinct feature that makes this generator a must-have, especially if you live in an area prone to calamities or unreliable fuel supply. This technology also gives you the chance to utilize the type of fuel that doesn’t degrade over time and offers a long-lasting runtime.

The generator is also easy to start, unlike others. The DuroMax Hybrid XP12000EH’s electric start feature is 12V battery-powered, which means you don’t have to pull the recoil start rope. But for convenience, the recoil start system is still available if the battery dies of lack of use. You will also notice a user-friendly panel when using this engine.

This generator has a fully featured power panel that includes a variety of outlets: two 120V household GFCl, one 120V 30A twist lock outlet, one 240V 30A outlet, and a 240V 50A outlet.

From the layout, you will see the oil warning light, circuit breaker, power outlets, and voltmeter. It also comes with two regular 120V plug outlets that allow you to hook it up to an RV or charge your batteries. The runtime is 10 hours on gasoline and 20 hours on propane.

  • Dual fuel tech offers efficiency and reliability
  • Comes with a durable, heavy-duty frame
  • These 12V battery powered generators have an easy electric start.
  • The generator has an extended runtime depending on the type of fuel
  • Provides a variety of sockets
  • Doesn’t run for long when running on gas

2. Champion 3400-Watt Hybrid Fuel RV

Champion 3400-Watt Dual Fuel RV Ready Portable

Champion 3400-Watt Hybrid Fuel RV generator is a top seller, too, because it’s so easy to use. It comes with both electric start and pull-cable options for convenience. The low-oil auto-shutoff is another feature that people love.

RV enthusiasts will also find this portable generator quite practical. The Champion is fully RV-ready as it comes with a special RV outlet. Interestingly, despite its compact form, it is powerful enough to run most 15,000 BTU RV air conditioners. Since it is parallel-ready, you can use it by hooking it up to another Champion generator with at least 2800 watts to enjoy a 50A RV outlet.

With noise level being a big deal for people, this generator is a saving grace. For something this powerful, at 59 dB, this is one quiet generator, like its version of the inverter generator from the same brand.

The dual fuel technology means you can operate your 3400-watt portable generator on gasoline and propane. This generator comes with a fuel selector dial which allows you to switch fuels with a quick turn. What makes the generator even more efficient is its 0.6-quart capacity.

  • This 3400-watt dual fuel portable generator is lightweight and easy to carry around.
  • The electric start makes it ideal for new users
  • Quiet for the power it generates
  • Fuel efficient gasoline and propane generator
  • Doesn’t come with a remote start like its predecessor

3. Pulsar Portable Generator with Dual System

Pulsar 10,000W Dual Fuel Portable Generator

Pulsar Portable is a high-value, high-performance generator with dual system. The Pulsar Dual Fuel Portable Generator has some of the most valuable features you always want to have in a generator.

The main reason why anyone would want to buy a generator is to have power. That is what you get when you switch on this generator. Regardless of the fuel you use, the power comes from a 420cc, OHV, single-cylinder, 15 HP, 4-stroke, air-cooled engine.

The large 6.6-gallon fuel tank that comes with this machine is ready for unleaded gasoline. However, you can still hook up a container of liquid propane gas by using the included propane hose. Switching from propane to gas-powered and vice versa while the generator is currently running is the most straightforward task thanks to the switch and go feature. Thus, you can still run your device for more than 24 hours if you so desire.

Most people who look for simplicity in machines will always keep off heavy generators. However, the Pulsar Portable Generator has a wheel kit and a handle that makes transportation an easy task. Although this is a 209-pound machine, the wheels are strong enough to carry the weight.

With Pulsar, being a modern generator, the startup is easy, and anyone can do it as it comes with an electric push-button. But in case the electric button fails, you can still use the recoil starter backup. Operating the control panels is straightforward despite this being one of the most powerful on this list. This generator is a reliable powerhouse that will keep all your appliances, devices, and tools running since it comes with different outlets.

  • Large 6.6-gallon tank for an extended runtime
  • Easy to switch between fuels
  • Portable generator
  • 4-stroke OHV engine
  • Has a lower wattage rating when using LPG

4. Westinghouse Dual Fuel Generator

Westinghouse WGen3600DF Dual Fuel

Other than the option to use either propane or gasoline, the Westinghouse Dual Fuel generator provides a relatively small but powerful generator. Like other modern machines, this one also has an electric-push start button.

What’s more, it also has a key-fob remote that lets you switch it on or off from anywhere in the house. You don’t need an adapter if you want to use it to your RV as it’s got a TT-30R 120V outlet that supplies power.

Westinghouse is one of the best equipment you could carry along on long trips. One full tank can power all connected devices for 18 hours, making it an ideal tool for power outages or projects requiring regular electricity.

If you are the type of a person that prefers working on a full tank, then the Westinghouse generator is big enough to take in four gallons of fuel. It also has a fuel gauge that lets you see how much fuel you still have before it goes off. The cast-iron engine sleeve also makes the engine perform better than the ordinary generator.

  • RV and camper ready. You don’t need any adapters
  • Easily switch to gasoline or propane
  • Electric start with a push of a button
  • Handles are flimsy

5. Sportsman GEN4000DF

Sportsman GEN4000DF

Other than its budget price that attracts users, many features make Sportsman GEN4000DF stand out. This product is a well-built generator with decent capacity and power, standing two feet and 17 inches tall and weighing 102 pounds.

It comes with handlebars for helping with lift. Although it doesn’t come with a wheel kit, you can buy it separately.

The panel design is simple and maybe the best for those who don’t like sophisticated looks. The buttons are all quickly identifiable. Just like other devices mentioned above, this generator is also easy to switch between gas and propane. If you want to use gas to power up your machine, adjust the chock, then turn on the fuel line after you have disconnected the propane.

The starting wattage of 4000 watts and running wattage of 3,500 watts is powerful enough to get essentials running. You can take it with you in your RV, and you will be confident that the 3,500 watts will power your 15,000 BTU air conditioner. However, we suggest that you use it with 13,500 BTU air conditioners for the best performance.

Performance-wise, this machine offers users 10 hours of runtime, which is long enough to keep your electrical appliances working temporarily. Safety is also a critical feature that makes the Sportsman GEN4000DF stand out. It has a low shutoff feature that turns the generator off when the oil runs low.

This means that you will not run the risk of a breakdown that’s usually the case when the tank dries up. It also has an overload protection ability: the circuit breaker in the Sportsman GEN4000DF shuts it down in case there is an overload. Therefore, all the appliances that are connected to this machine are free from damage.

  • Environment-friendly
  • Easy to operate
  • This generator comes with safety features for your electronic appliances
  • Enough runtime
  • Doesn’t come with a freewheel

The Differences Between Single, Bi-Fuel and Tri-Fuel Generator

Generators should not only be powerful. It would help to determine how large their fuel capacity is, their safety features, and their reliability in the long run.

There are three types of electric generators: single fuel, dual fuel, and tri-fuel. Here is a look at what sets each one of them apart from the other.

Electric generators normally run on these four fuels: liquid propane, gasoline, natural gas, and diesel. A single fuel generator is different from other types of generators as it only uses one of these fuels; in most cases, it works on either gasoline or diesel. Dual fuel generators, on the other hand, will run on two fuel types.

Therefore, you can easily use a different type of fuel if one is unavailable. The same concept goes for tri-fuel, except that you get three options for fuel.

What Makes Dual-power Generators Good?

Multi-fueled electric generators are the most preferred than single fuel counterparts. Here is a look at some of the benefits users stand to enjoy when choosing a dual fuel generator.

Versatility and efficiency

portable generator

Since a dual fuel generator uses two types of fuel to generate electricity, you can use a cheaper alternative when one fuel becomes expensive to acquire. Therefore, you can save, especially if you’re running time-crushed for a business.

The efficiency of this type of generator is also overwhelming. It can provide stable power for all your electrical appliances for a long time.

Smooth runtime

You will also enjoy the reliability that comes with a dual fuel generator in terms of constant electric power supply. Since they have two tanks or storage units, you can let your generator run on one fuel then seamlessly switch to the next one when the previous one runs out (taken care of by the automatic low oil sensor). Therefore, you get no interruptions or power blackouts in your business.

Since this generator automatically switches when one fuel reservoir runs dry, you don’t have to stop what you’re doing and check to see what’s going on.


Natural gas burns cleaner than diesel- therefore, mixed fuel means you’re not stuck with diesel. Therefore, there’s a chance to decrease emissions. You don’t have to invest in a new Genset if you want to meet non-emergency use guidelines.

Abundance of natural gas

The availability of natural gas is another benefit of a dual fuel generator. A good number of industrial businesses have a constant supply of natural gas, so you shouldn’t have a problem getting a tank or two.


Since natural gas is currently less costly than diesel, switching to a dual fuel generator is a wise choice if you plan on saving money. It is also essential to understand that natural gas burns cleaner than diesel. Therefore, your generator will require less routine maintenance than those who use diesel.

Buying Guide for Dual Fuel Generators


Since there are thousands of brands to choose from in the market, getting the best from the rest is difficult. Although most customers will only look at the price and the power output of the generator, there are crucial aspects you need to consider when choosing this generator.

1. Power

A generator’s primary job is to supply electric power, so it makes sense that this factor is the first thing that people judge. Higher power output is better, but keep in mind that the more you harvest in a short amount of time, the faster your fuel will be consumed.

2. Size

Size is another thing customers look at when looking for a dual fuel generator. Although most machines that come in large builds have high functionality, there are smaller ones that are just as efficient.

3. Noise Level

If you are buying a generator for domestic use, you need to ensure that the noise level is low for your neighbor’s sake. A machine that emits noise less than 65dB is considered neighborhood friendly.

4. Fuel efficiency

As you enjoy an uninterrupted power supply, you don’t want to spend a fortune on fuel. Therefore, when choosing a generator, read reviews, and look for product info that indicates how much fuel it needs for a smooth operation.

5. Durability

A good number of generators will come with a steel bearing that offers durability. It would help if you had a reliable and robust machine that will resist constant vibration and harsh physical conditions.

6. Warranty

The generator, being a mechanical device, is prone to breakdowns, and you don’t want to spend more on repairs. Therefore, you must choose a dual fuel generator with a decent, at least one year warranty.

7. Safety

The fuel that powers a dual fuel generator is flammable. Safety is the number one priority, so make sure the machine tightly locks in all the combustible materials to prevent spills. Sensors are also a good safety feature.

Also, it’s nice to look for a CARB-compliant machine. Champion generators are a great choice for that, to give you an example.

Final Verdict

With that said, you now have a comprehensive list of the most amazing dual fuel generators. These workhorses have been thoroughly reviewed and guarantee you nothing short of performance.

We liked the Champion Hybrid Fuel that runs 3400 watts on gasoline and propane. As its name says, it is a champion because it’s user-friendly, quiet, and fuel-efficient power tool. It’s also EPA and CARB approved. author Andreas Kalt
Andreas is a DIY enthusiast who specializes in home improvement and interiors. He believes each project is a puzzle which needs to be solved. Therefore he believes using the right tools is the key to make it efficient.
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