This is our review of the best dual fuel generator in 2023.

A dual fuel generator is better than one when it comes to maintaining the functionality of a generator and hence, your electronic equipment.

Though a gas generator may at first seem like the most convenient option, a dual-fuel generator that can also be powered by propane is a more versatile choice in case of an emergency. 

When fuel is low, you'll have greater flexibility with a generator that can run on two fuel sources - in conditions like a hurricane. You have better regulation over things like noise and pollutants with dual-fuel generators. While gas can be found at any gas station, propane has the advantage of being both cleaner and quieter when used. The most reliable dual-fuel generators also have a tonne of convenient extras that make using them simple, secure, and convenient.

I found that Westinghouse WGen7500DF dual fuel generator is the best dual fuel generator.

But every home has unique needs. So I’ve also reviewed the best 7 dual fuel generator in every category.

Let’s get started.

best dual fuel generator

The Best Dual Fuel Generators
(Reviews & Recommendations)

The best dual-fuel inverter generators we've tested can power anything from homes to hospitals. 

Some are made specifically to function as fully-fledged home-wide emergency generators. 

Some are lightweight and compact, providing enough power for a camping trip or brief power outage. 

The various generators on our list ensure that you can find one that is both functional and affordable.

In terms of efficiency, use, dependability, and cost, the Westinghouse WGen7500DF is the clear winner among the options we considered. This is why we feel confident in calling it the best dual fuel generator on the market today.

Okay, let's talk about how long it is. On gasoline, it has an 11-hour run time; on a full 20-pound propane tank, it has an 8-hour run time. You can now plug in twice as many devices or run a whole modest guest suite on the same amount of electricity as before.

There's no need to break a sweat or spend hours cranking it up because Westinghouse WGen7500DF has a push-button electric start. The bundled key fob makes turning it on even more insanely fast and convenient. This dual-fuel generator may be operated from a distance.

If the remote is misplaced or broken, you can use the recoil start in an emergency.

In case those qualities aren't enough to convince you, consider that this finest dual fuel portable generator is lighter and, therefore, easier to transport. Weighing in at a mere 192 pounds, it is surprisingly portable (of course, without fuel). However, with a full tank, it weighs less than 200 pounds!

Power consumption while running on propane is 6750 watts, down from a peak of 8550. In the event that you require marginally more thrust, you may always swap to gasoline. This would provide you with a spike of 9500 watts and a steady output of 7500 watts.

This can serve as a complete home backup solution in times of emergency, such as hurricanes, and is more than sufficient for heavy power equipment.

Features and Benefits

  • 6.6 gallon fuel tank with fuel gauge
  • Electric push-button start with a remote key fob;
  • 7500 rated watts and 9500 peak watts (gasoline);
  • 6750 rated watts and 8550 peak watts (propane)
  • The decibel count is 74.
  • Distribution Points Counted: 4
  • Utilization of fuels to maximum effect
  • Anti-failure ignition system
  • The addition of wheels greatly improved our mobility.

The Champion Power Equipment 100891 Dual Fuel Generator is a close second among the best dual fuel generators. But then, why do you rank it second? The following is a review of the Champion Dual Fuel Generator.

This particular variant of Champion's dual-fuel generator can be started into action even in the freezing cold thanks to its cold start function. A generator's mechanical parts (including oil) can freeze at subfreezing temperatures, making it difficult to start. 

However, if your generator has a cold start feature, you won't need to warm it up, crank it for hours, or click the start button dozens of times (which we don't advocate doing because it could flood the engine).

And thanks to the digital gauge, you can keep track of your power output, runtime, and fuel level with ease. You can reduce the amount of time spent waiting for refuelling by half compared to our most cost-effective option. Champion power tools come with free lifetime technical support from the company.

It is not the lightest dual fuel portable generator, coming in at 207 pounds.

In terms of power, it's fantastic, but we were hoping for more from the most costly generator on our list. It has the same gas and propane running power as our best dual fuel generator pick but has a shorter run time. Both gas and propane have limited lifespans of 10 hours at most.

Champion's smart packing makes assembly quick, and the foldaway handle and never-flat tires make transit simple. 

In conclusion, this unit provides a wide range of technological comforts. However, it does not come without costs since it is bulkier, has a shorter battery life, and has an expensive price tag.

Features and Benefits

  • 7.7 gallon fuel tank with fuel gauge
  • Electric start with rocker switch
  • 7500 rated watts and 9375 peak watts (gasoline)
  • 6750 rated watts and 8400 peak watts (propane)
  • The decibel count is 74.
  • Distribution Points Counted: 2

The Westinghouse WGen3600DF Dual Fuel Generator is the least affordable option on our list of dual fuel generators, but it is reliable enough to keep your heater running all night in a snowstorm. You can also charge all your power banks, keep the fridge running, so nothing goes bad, and even keep your modem running so you can stay online.

When you finally get your hands on this dual fuel generator, what can you expect?

If you fill the 4-gallon fuel tank to the top, you'll get more than 13 hours of use. However, this dual fuel generator can easily overheat if operated at full load. It's possible to get up to 10.5 hours out of propane.

The electric push button on this generator provides backup power with minimal effort on your side.

You'll be relieved that this generator won't attract too much attention or prevent you from getting a decent night's sleep when you bring it on your off-grid adventures. Its decibel level is 69, which is slightly higher than the average 60 db.

It is one of the lightest dual fuel generators on the market, coming in at just 109 pounds. Moreover, it can power any RV or trailer because it comes with a variety of outlets, including standard DC and twist-lock. A regular electrical socket is all that's needed to power it.

I'll get to the negatives right now. These dual fuel generators are inexpensive for a reason: they have a low running wattage. Thus, it shouldn't be relied on to power the entire home.

The convenience of a typical dual fuel generator is what you may expect in the end. The high-tech remote start capability is a nice bonus, but you really got a steal when you consider how cheap it is.

Features and Benefits

  • 4 gallon fuel tank with fuel gauge
  • Electric push-button start with a remote key
  • 3600 rated watts and 4650 peak watts (gasoline)
  • 3240 rated watts and 4650 peak watts (propane)
  • The decibel count is 74

When it comes to putting out power, the Pulsar G12KBN-SG Dual Fuel Generator is a beast. Plus, at half load, you can run a whole house for 12 hours. More so if you just do the most important things. And like the WEN generator, this one has a 240V option as well.

The trade-off will be the noise level, which is about 76db. It won't be as quiet as a whisper or as good for the environment as our budget choice. When this generator is running at night, you'll have to cover your ears with pillows or wear headphones. We won't be surprised if you have to speak louder when you're standing next to it.

And don't expect it to be portable because even without fuel, it weighs 209 pounds! If you bring this on your next RV trip, you might want to get a ramp or bring someone with you to help.

The specs for this two-fuel generator are better than those for the best choice. Even the price difference between the two models is close. This unit also has an electric start, but you can't start it from a distance. This fuel-efficient generator fell short because of this small flaw and the fact that it is very heavy. This dual fuel generator has four 120-volt household outlets, one 120-volt twist-lock outlet, one 12-volt DC port, and one 120/240-volt industrial grade outlet.

Features and Benefits

  • 4 gallon fuel tank with fuel gauge
  • Electric push-button start with a remote key
  • 3600 rated watts and 4650 peak watts (gasoline)
  • 3240 rated watts and 4650 peak watts (propane)
  • The decibel count is 74

DuroMax XP5500EH dual fuel generators can run on both gas and oil. It is a very impressive strength considering its diminutive size. DuroMax is a fantastic portable dual fuel generator type that can let you enjoy the outdoors more. The sturdy steel lift frame and wheel assembly in the back make it convenient to move around.

But the DuroMax XP5500EH Dual Fuel Generator has a 25% shorter run time than the other big generators on this list. Even though this unit has a fuel-saving idle control, that is already the case.

The 142-pound generator can run for up to 9 hours on a full 4-gallon tank of gas. It puts out 4,500 watts of power while running and 5,500 watts at its peak. On propane, it has a running power of 4,275 watts and a peak power of 5,225 watts. This generator has two standard 120V household outlets and one 120V/240V twist-lock outlet that can be used to power 240V tools or appliances.

Okay, this generator doesn't use the least amount of gas. But safety and noise level management make up for this. Like the DuroMax, this also has built-in fire protection and surge protection, so it can be used anywhere in the US. It also has an engine that is cooled by air.

Features and Benefits

  • Generator weight 238 pounds
  • 10,000 rated watts and 8,000 peak watts
  • The decibel count is 72.
  • Distribution Points Counted: 5

There is a sizable engine in the Durostar DS10000EH Dual Fuel Generator. However, the fuel tank is very modest in size. But since its power output is the same whether it's run on gas or propane, you can use whatever fuel source is more accessible. In reality, its massive engine aids in converting fuel for use with high-amperage power equipment.

However, its strength lies in its low noise level and fuel efficiency. The automated idle control shuts down the engine and reduces fuel consumption while the generator is not being used.

The 439cc engine produces about the same amount of noise as a dishwasher at roughly 45 dbA when it isn't running at full throttle. It has a peak output of 72 dbA when fully operating. The noise isn't very loud or bothersome, but it may take some time for you to become used to it so that you can sleep through the night without waking up.

The generator wheel assembly was simple to set up; the unit came with a propane hose and an updated regulator.

It's a pricey configuration when compared to other leading dual fuel generators on the market today. It lacks advanced features such as a remote starter, making it less convenient. However, you gain access to numerous additional safety features and national approval certifications throughout the United States.

Features and Benefits

  • Generator weight 238 pounds
  • 10,000 rated watts and 8,000 peak watts
  • The decibel count is 72
  • Distribution Points Counted: 5

The 7 HP engine housed inside the chassis has its own air cooling system to ensure reliable operation at all times. To further extend engine life and protect it from oil shortage-related harm, there is a low oil shutoff sensor.

Regardless of the fuel type you use, this machine is relatively quiet and can be easily converted between them. In the eyes of the environmentally conscientious, the generator passes muster because it abides by both the EPA and CARB standards.

The sturdy cast-iron framework that protects the engine and other internal components was a big selling point for me. It gives the equipment the rugged, long-lasting feel you'd expect from anything of this caliber, which is especially welcome when you're toting it around. The control panel's advanced oil warning indication, circuit breaker, and voltage meter.

The oil intake is hard to get to, and there is a chance of leakage when you change the oil, which is a regular issue with dual fuel generators.

A couple of buyers have also mentioned that they were told a certain component wasn't covered by the guarantee. In one instance, the regulator failed, and the client was told to buy a new one on their own.

Features and Benefits

  • Generator weight 122 pounds
  • 4,850 rated watts and 3,850 peak watts
  • The decibel count is 69
  • Low oil shutdown switch
  • Distribution Points Counted: 3

Buying a Best Dual Fuel Generator

Buying a Best Dual Fuel Generator: Some Advice

This part is a little more technical. But be patient. If we don't explain these things in detail, you may end up overloading your generator.

Types of dual fuel generator

Most generators that can run on both gasoline and propane are the most common type. Diesel or natural gas are used by others. But these two choices aren't as good or as quiet, and they pose a bigger safety risk.

We put a lot of attention on being able to use both gas and propane. Gasoline is easy to get, burns better and is the most convenient fuel to transport. All you need is a container that is approved to hold fuel and can be bought at a gas station.

On the other hand, propane is safer to store for a long time because it comes in a safe tank. It also burns more cleanly and quietly than gas.

Both gasoline and propane have some bad things about them, but the good thing is that the good things about each one make up for the bad things.

Tracking System

As you can see, monitoring the generator's output is crucial. Pick one that clearly indicates the output power, battery life, and voltage.

Locate a generator that alerts you when the oil level is too low. It's a pain to have to open the oil container and dip the stick. More effective than any other warning system is the flashing red light. This also applies to the fuel gauge.

Meets CARB Standards

If you care about maintaining a healthy environment and minimal emissions of CO2 and other pollutants, you must use a generator that complies with CARB standards.

Air quality can be harmed by excessive CO2 since it depletes the air of oxygen. The effects may include lethargy, headache, and difficulty breathing.

These checks guarantee that your generator is working at peak efficiency while also protecting the surrounding area. It's a relief that every choice we've considered has met the standards set by the California Air Resources Board.

Power Output (Wattage)

The amount of power that a generator puts out is measured in watts (W). The specs from the manufacturer include the maximum power output and the average power output.  

The difference between starting wattage and running wattage is one of the most confusing parts of running a generator.

The starting wattage is the same as the maximum wattage. Does that mean you can keep your generator running at full capacity all the time? 

Your system will be overloaded if you do this, so the answer is a big NO.

Starting wattage is only used to get things going. After a while, the power goes down and stays the same. Here you get your running wattage.

When figuring out what to plug into your generator, compare the total wattage to the running wattage, not the starting wattage.

Some generators don't have enough power to run a space heater or a wall heater. You might want to get a wood stove as an extra way to heat your home.

You can't run a dual fuel generator at full capacity, so it's important to control how much power you use. Here's what you need to do.

Find out how much power your most-used items need. If you can't find the wattage, you can figure it out by multiplying the voltage and amps on the label.

Add up the wattage and see if it's about half of what your generator can handle. Plug in the things you need and keep an eye on how much electricity they use.

Electric Start vs. Pull Cord

You can use an electric switch or a recoil cord to start your generator that runs on both gas and oil.

Electric start generators store extra electricity in a battery that is built into the generator. When you press a button or flip a switch, the generator starts up by itself. An electric start is much easier to use than a recoil cord, but it needs a generator to store electricity. You can't use the electric start if the battery inside isn't charged.

Recoil cord is an old but reliable technology that has been used in generators, lawnmowers, chainsaws, and many other fuel-powered tools for years. 

To start the generator this way, you have to pull the recoil cord quickly and steadily to kick-start the engine. 

Even though it will take some work and maybe more than a few pulls to get the generator going, you won't need electricity. This lets you start the generator at any time, even if it has been sitting in the garage or shed for a few years.

The volume of Noise During Operation

While it's inevitable that the use of any electric item or accessory will result in some level of noise, the best dual fuel generators provide very minimal noise production while yet providing adequate power for your needs. 

Normally, we use decibels to express the volume of background noise during operation (dB). 

Typical noises and their corresponding decibel (dB) levels are listed below to help you see the scope of a generator's output:

Cooler, 50 dB

Roughly 70–90 dB for a hair drier

95-110 dB for a motorcycle.

It's important to keep in mind that the sound level produced by a dual fuel generator can range from 50 to 90 dB, depending on the unit's size, the fuel used (remember that gasoline runs louder than propane), and the amount of power it produces. 

The typical noise level of a generator is between 65 and 75 decibels, which is about as loud as a hair dryer set to its lowest setting.

Comparison of Physical Dimensions 

Most models of dual fuel generators range in size from around 22 by 22 

by 22 inches to about 35 by 30 by 30 inches, with the average being about 30 by 22 by 22 inches. 

Usually, their weight ranges from 100 to 250 pounds.

Portability is an important consideration if you intend to relocate the generator frequently. If you need to transport it elsewhere, double-check that its size and weight are suitable for the trip. 

Don't make it so big that it's cumbersome to transport, but also don't save on electricity by getting a tiny generator. 

Keep in mind that the strongest motors tend to be the largest and heaviest ones.

Run Time

Let's clear something up. Run time tells you how long your generator will keep running when it is only half full. It's a safety feature that keeps your generator from running on fumes and hurting the engine.

Inverter Generator changes itself automatically based on the load it's powering. If your generator only runs for a short amount of time, you could get a home wind turbine as an alternative power source.

Benefits of having a best dual fuel generator

A dual fuel generator can run on either gasoline or diesel, although this decision should be made based on individual choice. However, for many homes, the option to switch between two fuel sources is a need. If you have access to propane tanks, for instance, you could easily utilize that instead of gas.

When determining whether to upgrade to a dual fuel generator or keep using your current one, you should think about the following advantages.


A dual fuel generator will save you so much money that it just makes sense to make the switch.

Propane is an alternative fuel source that can be used in place of gasoline. Plus, you can probably expect to see immediate cost savings due to the fact that propane is more affordable than gas.

Propane is a great fuel for a generator because of its efficiency. The generator will survive longer on propane than gas, even at half load.

Easy to Keep Up

Because propane burns much cleaner than gas, you can be sure that the amount of maintenance you have to do on your generator will go down a lot.

You won't have to worry about buildup getting to the internal parts and doing damage that won't go away. When it's time to store the generator, fuel storage will save you a lot of room.

Most of the units are made to withstand a lot of wear and tear, so you won't have to worry about damage.

Easy to carry

Depending on the size, some generators may be easier to move than others. Overall, even the biggest models have foldable handles and tires that never go flat. They are also very easy to move around.

If you buy one of these, you won't have to worry about moving a big generator from one place to another.


At first, you might think that a generator that can run on both gas and oil is hard to use, but it's not. As a more advanced option, it might even be easier to use than your current unit.

You can easily switch between fuel sources by pressing a button, flipping a switch, or pulling a small lever. Some generators let you switch between gas and propane while they are running.

You're also likely to find a lot of other features that are easy to use, like wheel kits, tool kits that come with the bike, and smart gauges.

Number of Outlets

One thing that makes these units easy to use is the number of outlets they have. Heavy-duty appliances don't just come in one or two types. Instead, there are many to choose from.

Some generators have RV outlets, home outlets, and DC outlets that look like cigarette lighters.

Generators with T-twist lock outlets are ideal for use in a recreational vehicle or trailer, as they keep cables from tangling. Also helpful are GFCI outlets, which protect against electrical shock even on wet days.

FAQ about Best Dual Fuel Generator

How does a generator with two fuels work?

A dual-fuel generator is similar to a standard generator except that it may use propane or gasoline to generate electricity. The generator converts the mechanical energy released from fuel combustion into electrical energy by driving electrical charges.

Should you invest in dual-fuel generators?

Dual-fuel generators are slightly more expensive than standard generators. In the long run, though, they save money because they use less gas. If you intend to keep them within earshot, you'll be happy to know that they are noticeably quieter when operated on propane rather than gas. It's essential to be prepared to use any fuel you may find in a natural disaster, such as a hurricane.

What is the most powerful dual-fuel generator available?

Power, at least in theory, has no bounds. Although some may claim otherwise, the most powerful consumer-grade dual-fuel generators max out at roughly 12,000W.

When using a generator that can run on gas or propane, what should you choose and why?

While gas generates more power, propane keeps the generator from making as much noise and has fewer adverse effects on the environment. A generator that can run on gasoline and natural gas gives you more flexibility.

When using a dual-fuel generator, how loud is it?

Around 50 dB is the noise level produced by the quietest dual-fuel generator you can buy. We found the Westinghouse iGen4500DF the most modest portable option at only 52 dB.

Is it possible to use natural gas with a dual fuel generator?

You can modify a few single-fuel generators to work with natural gas, but this isn't possible with dual-fuel generators. Dual-fuel generators do not run on natural gas and cannot be changed to do so unless they were made for this purpose.

Which is cheaper: gas or propane to run the generator?

Propane gas is cheaper than gasoline and almost impossible to spill. It also burns cleaner, so the engine wears out less over time. Investing in propane gas is an excellent way to save money in the short and long term.

How long will a generator that can run on both propane and gas last?

Runtime is not based on the fuel type but on how well the product uses fuel and how much fuel it can hold. On the other hand, a standard generator that can run on both gasoline and propane runs for about 8 to 10 hours on propane.

I was wondering whether a remote start was available for a dual-fuel generator.

Some of the most appealing aspects of generators are the ability to kick them into motion from a distance. You won't need to worry about manually turning the engine over like you would with an electric start.

You may turn on the generator from afar with a remote start. A remote can be used to start the generator from inside the motorhome or house, just way a key fob starts a car.

This feature can be very useful for everyday use or when you can't go outside because of a disaster.


Westinghouse WGen7500DF dual fuel generator is the best choice.

When camping or stocking up on emergency supplies, a generator that runs on both gasoline and propane can be invaluable. In any case, it's a substantial expenditure, so be sure to get a generator that's adequate for your needs.

And when it comes to providing energy for an entire home, more power is better. But a portable option may be more convenient for emergency backup power in an RV or in the event of a sudden power outage.