Best Dual Fuel Generator Reviews (2019 Comparison)

Last updated on June 15th, 2019 at 08:05 am

Whatever your reason for buying a generator, there are important considerations to make. While any generator will benefit your home, a dual fuel generator is hard to beat when it comes to getting continuous power. Dual fuel generators run on either propane or gasoline and can be used to power just about anything, from heating systems to air conditioners. If you are living off the grid, having a dual fuel portable generator allows you to savor the wild without giving up your modern amenities. Based on research, we have created a list with the best dual fuel generators in the market today. Read our dual fuel generator reviews so you can find the best dual generator at your price and power range.

Best Dual Fuel Generator Reviews

  • Champion Power Equipment 3400Electric + Recoil Start
  • 4.5 Customer Rating
  • Gas: Peak 3400W - Running 3100W
  • LPG: Peak 3060W - Running 2790W
  • Tank Run-Time @ 50% Load: 6 hrs.
  • Noise Level @ 50% Load: 59 dB.
  • Weight: 96 lb.
  • Warranty: 3-Year Limited
  • Price: $$$$

  • Sportsman GEN4000DFRecoil Start
  • 4.4 Customer Rating
  • Gas: Peak 4000W - Running 3500W
  • LPG: Peak 3600W - Running 3150W
  • Tank Run-Time @ 50% Load: 10 hrs.
  • Noise Level @ 50% Load: 69 dB.
  • Weight: 94 lb.
  • Warranty: 1-Year Limited
  • Price: $$

  • Westinghouse WGen3600DFWireless Remote + Electric + Recoil Start
  • 4.1 Customer Rating
  • Gas: Peak 4650W - Running 3600W
  • LPG: Peak 4180W - Running 3240W
  • Tank Run-Time @ 50% Load: 13 hrs.
  • Noise Level @ 50% Load: 69 dB.
  • Weight: 109 lb.
  • Warranty: 3-Year Limited
  • Price: $$$

  • Champion Power Equipment 7500Electric + Recoil Start
  • 4.4 Customer Rating
  • Gas: Peak 9375W - Running 7500W
  • LPG: Peak 8400W - Running 6750W
  • Tank Run-Time @ 50% Load: 8 hrs.
  • Noise Level @ 50% Load: 74 dB.
  • Weight: 202 lb.
  • Warranty: 3-Year Limited
  • Price: $$$$

  • Pulsar Products PG10000B16Electric + Recoil Start
  • 4.3 Customer Rating
  • Gas: Peak 10000W - Running 8000W
  • LPG: Peak 9000W - Running 7000W
  • Tank Run-Time @ 50% Load: 12 hrs.
  • Noise Level @ 50% Load: 76 dB.
  • Weight: 209 lb.
  • Warranty: 2-Year Limited
  • Price: $$$

  • DuroMax XP12000EHElectric + Recoil Start
  • 4.0 Customer Rating
  • Gas: Peak 12000W - Running 9500W
  • LPG: Peak 10200W - Running 8075W
  • Tank Run-Time @ 50% Load: 10 hrs.
  • Noise Level @ 50% Load: 72 dB.
  • Weight: 269 lb.
  • Warranty: 1-Year Limited
  • Price: $$$

1. Champion 3400-Watt Dual Fuel Inverter Generator

best dual fuel generator

The Champion Power Equipment 3400-watt is the only dual fuel portable inverter generator in our list. Has a 1.6 gallon gas tank that allows it to run for 7.5 hours and with a 20 pound propane tank runs for over 14 hours on 25% load.

Produces 3400 starting watts and 3100 running watts on gas. With propane, it produces 3060 starting watts and 2790 running watts. Allowing you to easily switch fuels with a quick switch dial so you can operate your generator using either propane or gasoline. In addition, giving you the option to increase its power with an optional parallel kit that comes with a 50-amp RV ready outlet.

Features a super convenient electric start with a battery that has cold start technology to ensure it does not disappoint during cold weather. With a low-oil shut off sensor, the machine will switch off for safety when low on oil. Not to mention, EPA certified and CARB compliant.

You may also be interested in Champion Power Equipment Digital Hybrid


  • Produces clean stable power, safely connect all your sensitive electronics with this inverter generator.
  • Has a smart economy mode that reduces the electrical load when needed for better fuel economy, extended engine life, and quieter operation.
  • Several outlets including two 120V 20A household, one 120V 30A RV, and two USB ports. Secured by VoltGuard to keep your devices safe from harm in the event of a power surge.


  • The fuel tank is a bit small, and without extended tank capacity, you cannot do much about it.
  • There are some concerns about quality control.

2. Sportsman GEN4000DF Dual Fuel Portable Generator

dual fuel generator reviews

Ideal for running appliances during an outage or running the power tools in a construction site. The Sportsman GEN4000DF is a dependable generator that will rise to the occasion when your power sources are out or limited.

Runs on either propane or unleaded gas for enhanced convenience as you can choose the fuel that is affordable and available to you.

Has 4000 peak watts and 3500 continuous watts on gas, 3600 peak watts and 3150 continuous watts on propane. The GEN4000DF has the flexibility and capability to handle any task.

With a 3.6 gallon gas tank runs for 10 hours and up to 12 hours on a 20 lbs propane cylinder at 50% load. Included a 5-foot propane fuel hose for added convenience. Equipped with a low oil shut off feature to avoid damage in case it goes low on oil. An affordable camping generator for the wild outdoors or tailgating events.


  • A high-performance dual fuel 7 horsepower engine.
  • Fuel-efficient, provides long running time on both propane and gasoline.
  • Features four household outlets, one RV outlet, and a DC outlet for battery charging.


  • No indicator lights to show if you are running low on fuel.
  • It does not have a mobility kit or wheels which makes it hard to transport.

3. Westinghouse WGen3600DF Dual Fuel Portable Generator

Westinghouse WGen3600DF Dual Fuel Portable Generator

The Westinghouse WGen3600DF, a powerful and low-maintenance dual fuel generator. Designed with the latest technology and ready for you to take it anywhere.

Rated at 4650 watts starting power and 3600 watts running power on gas, 4180 watts starting and 3240 watts running on LPG. Easy to use with color coded buttons and fuel selector switch to easily guide you through running the machine.

Other attributes include an automatic low oil shutdown feature and a muffler for quiet operation. While also being CARB compliant, producing low emissions, making it safe to use anywhere.

The WGen3600DF is a powerful user-friendly generator, with heavy-duty enclosure and cast iron sleeve that adds protection to the whole unit. Backed by a reliable manufacturer and timely customer service assistance.

You may also be interested in Westinghouse Wgen7500


  • Offers a pull start, an electric start, and a wireless remote start option.
  • Long run time, has a large gas tank of 4 gallons that allows it run for over 18 hours and on propane up to 20 hours at quarter load.
  • Has one TT-30R 30A power outlet, one L5–30R 30A power outlet, and one 120V AC duplex power outlets. Also, circuit breakers for easy power control and management.


  • Weighs 109 pounds, which is really heavy but the presence of non-burst tires make for increased portability.
  • Not reliable quality control during manufacturing.

4. Champion Power Equipment 7500-Watt Dual Fuel Generator

Champion Power Equipment 7500-Watt Dual Fuel Generator

The Champion dual fuel portable generator offers reliable power for your job-site or home. Has a maximum of 9375 watts with rated 7500 watts on gas, and 8400 watts with rated 6750 watts on propane.

Allowing you to run the TV, lights, sump pump, fridge, security systems, and even the AC simultaneously. It is also great for running the 2 HP air compressor or about 5 power tools.

Powered by a reliable engine with cast iron sleeve for added protection. Can run for 8 hours on a full gas tank of 6 gallons and 5.5 hours on a tank of propane. CARB compliant for all 50 states.

In addition, an electric start to power the engine and a handy toggle switch. Overload protection, oil sensors, and sturdy wheels for easy transport.

You may also be interested in Champion Power Equipment 46539


  • Intelli-gauge to help you take control on your generator showing hertz, voltage, and runtime hours to easily monitor the power output and maintenance levels.
  • Features a tubular steel frame for sturdiness and durability with never-flat wheels.
  • Has four 120V 20A household ports, one 120V 30A locking port, and one 120/240V 30A locking port. In addition to the built-in Volt Guard surge protector to prevent overloads.


  • Not fuel efficient, burns up fuel.
  • It runs better on gasoline, and terrible on propane.

5. Pulsar Products PG10000B16 Dual Fuel Generator

Pulsar Products PG10000B16 Dual Fuel Generator

A powerful dual fuel generator with a 10,000W starting power and 8000W running on gas or 9000W starting power and 7000W running on propane. Suitable for large application with enough capacity to power major appliances in the home in case of a blackout.

The 15 horsepower engine protected by a sturdy steel frame. With 10-inch never flat wheels and handy drop-down handles, you can move your generator with ease to your preferred location or storage area.

Easy to start and easy to use. Features an electric key start and a fuel selector switch that allows seamless transition between the desired fuel, gasoline or liquid propane.

In addition, low oil sensor to alert you when you are short on oil, overload protection, circuit breakers, and hour meter. It’s also CARB compliant.


  • Long-running time at 12 hours on 6.6 gallons of gasoline at half load.
  • A 3 in 1 digital volt meter to easy indicators view.
  • Features a convenient four 120V household outlets, one 50 amp RV outlet, one 120V/240V 30A Twist-Lock, and one 12V DC port. Perfect for running different appliances including power tools.


  • While the exhaust is not loud, the machine’s engine makes too much noise by itself.
  • Inconsistent power output.

6. DuroMax XP12000EH Dual Fuel Generator

DuroMax XP12000EH Dual Fuel Generator

The DuroMax XP12000EH offers a peak power of 12,000 watts with a constant power of 9500 watts on gas. While on propane it offers a peak power of 10,200 watts with a constant power of 8075 watts.

This means that it can provide almost any home with the power it needs, serving as an emergency backup power by connected it through a transfer switch.

The DuroMax XP12000EH equipped with a heavy-duty steel frame with 4 point fully isolated motor mounts and sturdy wheels. A full power panel with volt meter, circuit breakers, and warning lights.

Features an electric start, automatic low oil shutdown, and mufflers to reduce the noise. In addition, the overload protection that automatically stops the engine in case of excessive heat and circuit breakers that you can easily reset by pushing the AC breaker on each outlet.

You may also be interested in DuroMax XP4400E


  • An 18 horsepower dual fuel technology makes use of gas or propane so you are covered in emergencies.
  • Has an 8.3 gallon of a gas tank that provides 10 hours run time on gasoline and up to 20 hours on 40 lbs propane at 50% of the maximum output. Giving you the longest run time with short maintenance intervals.
  • Features Power Boost technology which gives you the option to maximize the power by selecting between 120V or 240V with a simple switch.


  • In case of defects, customer care is unresponsive and will not tend to your issue fast enough. The limited warranty does not cover certain problems with the machine.
  • There are oil leakage cases after start up.

Best Dual Fuel Generator Comparison by Size

Feature/ProductChampion Power Equipment 3400Sportsman GEN4000DFWestinghouse WGen3600DFChampion Power Equipment 7500Pulsar PG10000B16DuroMax XP12000EH
Wattage (Gas):3400W / 3100W4000W / 3500W4650W / 3600W9375W / 7500W10000W / 8000W12000W / 9500W
Wattage (LPG):3060W / 2790W3600W / 3150W4180W / 3240W8400W / 6750W9000W / 7000W10200W / 8075W
Fuel Capacity (Gas):1.6 gal.3.6 gal.4.0 gal.6.1 gal.6.6 gal.8.3 gal.
Engine Displacement (cc):192 cc.212 cc.212 cc.439 cc.420 cc.457 cc.
Engine Horsepower (HP):6 HP7 HP5.9 HP15 HP15 HP18 HP
Starting Method:Electric + RecoilRecoilRemote + Electric + RecoilElectric + RecoilElectric + RecoilElectric + Recoil
Fuel Gauge:AvailableAvailableAvailableAvailableAvailableAvailable
Automatic Voltage Regulator (AVR):AvailableAvailableAvailableAvailableAvailableAvailable
Outlet Protection Circuit Breakers:AvailableAvailableAvailableAvailableAvailableAvailable
Low Oil Shutdown:AvailableAvailableAvailableAvailableAvailableAvailable
Quiet Mufflers:AvailableAvailableAvailableAvailableAvailableAvailable
Spark Arrestor:AvailableAvailableAvailableAvailableAvailableAvailable
Exhaust Emissions Certificate:EPA + CARBEPAEPA + CARB + CSAEPA + CARBEPA + CARBEPA

Difference Between Single Fuel & Dual Fuel Generators

A single fuel generator is any generator that runs off one fuel source such as propane, diesel, gasoline, or natural gas. These are great if you do not have much time for planning, especially gasoline and propane portable generators as they are available in most locations. Propane also burn cleaner than gasoline and diesel.

With dual generators, there are two types available. The tri-fuel generators which can use up to three different fuels. And dual fuel generators where they can use two fuel types. In case you run out of your preferred fuel, your generator will continue running with another until you get the type of fuel you prefer.

Further, dual fuel generators are also called hybrid or bi-fuel generators. With a hybrid generator, you can use whichever fuel is available to you at the time thus efficient and reliable. Often, dual fuel generators use propane and gasoline, while tri-fuel generators use propane, gasoline, and natural gas.

dual fuel generators

Advantages of Dual Fuel Generators

While any generator will benefit your home, a dual fuel generator doubles this by giving you a viable option to either use gas or propane. Gas fuel generators have their benefits, for example, they are easily accessible. However, they also have their disadvantages. As a result, a dual fuel generator allows you to use propane instead. Propane is cleaner, quieter, and cheaper.

  1. Versatility

It is great to have options in case one of the resources is not available. Let’s say there is a power outage in your area and you have no gasoline ready for your gas-powered generator, you might be out of luck if all the local stations have none either.

What if you live in an area that is prone to hurricanes and blizzards? Such a natural disaster can leave you without power for days. With a reliable dual fuel generator, you have the option of using the type of fuel that is available to you. When one runs out, you simply switch to the other and you have power for days.

  1. Effectiveness

There is a common misconception that a dual fuel generator has reduced effectiveness and quality of the amount of power you have from running either of your fuels. The truth is that they are just as functional if not better. Whether you need the power to run small power tools or larger appliances, the dual generator will get the job done for just as good as a single fuel generator. Since there is a range of options to choose from, you can get a generator that is best suited for your needs.

Further, dual fuel generators are more efficient than single fuel generators. In case of an outage or natural disaster, you can rely on your bi-fuel generator to provide power using the fuel available to you at the time. They function great even in cold areas and tough weather conditions so you can depend on your generator for power during tough times.

  1. Economical & Easy Maintenance

Dual fuel portable generators are easy to maintain as you can easily move them for repairs in case of a breakdown. Unlike whole house generators that are more on the expensive side when it comes to site maintenance, repairs, and also require installation.

  1. Durability

One of the noticeable features of bi-fuel generators is that they are designed using sturdy materials to last long. Manufacturers understand that these generators are often used in areas that are prone to hurricanes, blizzards, and tough weather conditions. As such, they make dual generators with sturdy frames and strong materials for durability.

  1. Uninterrupted Power Supply

Most of the appliances we use are powered by electricity. It is critical that there are no interruptions to your power supply. With a bi-fuel generator, you are ensured of a continuous power supply all the time. This is important for all the appliances that need to stay up and running and do not have their own uninterrupted power supply. Hospitals, factories, and some types of businesses would largely benefit from a dependable generator.

  1. Convenience

Dual fuel generators are highly convenient because when you may not easily get natural gas and propane in remote areas, you will get diesel and gasoline in every exit and even the smallest of towns. This allows you to use the fuel you can find giving you back up even when you run out of your preferred fuel.

Disadvantages of Dual Fuel Generators

The main challenge you will face with a dual fuel generator is that one large unit will be more expensive than the same-size generator using only one fuel. You will have to budget accordingly and search for the best dual fuel generator to handle your needs perfectly at an affordable price.

What to Consider When Buying a Dual Fuel Generator

During outages, you want the best machine to power your home or job-site. Understanding why this is an important feature for many homes, we have some points for you to consider to make a more informed decision. Based on affordability and capability, you can make a choice on which is the best dual fuel generator for your needs.

  1. Budget

Working with a budget you can afford is of paramount importance in any purchase, especially with essential home equipment like a generator. If you have a budget, it is easy to make a choice on a range of generators you can afford. The cost of a generator ranges from several hundred dollars to several thousand. Higher power generators will command higher rates. Undoubtedly, a good price will most often than not come with a better quality too.

  1. Fuel Storage & Temperatures

An important factor to consider when purchasing a portable dual fuel generator is the fuel storage and temperatures. Often, gasoline is the popular choice because it is affordable. The downside to gas is that it does not last long due to its short shelf life as heat makes it evaporate. In this case, propane is a good choice as it lasts indefinitely. However, the only downside to propane is that cooler temperatures under 40-degrees Fahrenheit make it contract causing a drop of pressure in your propane tank. Because of the drop in pressure, it may not be enough to start up your generator while it is on propane alone.

Also, consider your fuel storage and the ideal temperatures for your choice of fuels. The best part about dual fuel generators is that you have the choice of any of the fuels so you will never be let down during an emergency. However, these are just some factors to consider when purchasing a dual fuel generator so you are best prepared with both fuel choices and use them optimally without wastage.

  1. Power & Size

Size is an important factor when choosing a dual fuel generator. Most of the good models are large but that does not mean that you cannot get a small machine with great features at an affordable price. Consider the total wattage, weight, and portability when purchasing a generator. This said, better models are larger in size and sometimes come at a better cost too.

  1. Neighborhood Friendly

If you love your peace and quiet, you may want to pay attention to the noise level of your generator. When using a generator around people or a residential area, noise can be a huge deal. Nobody wants to wake up in the middle of the night because of a large and annoying generator. The quietest generator models should emit noise less than 65dB. Check that the noise level is acceptable to you before making a purchase. There are good models that stay below 50dB.

  1. Find Out Your Location Limitations

There are location limitations if you live in an area where running or fueling your generator will be troublesome. Cases of these include snow during winter that will prevent you from running your appliance outside. The distance to the nearest gas station may be far requiring you to have a reserve for fuel. Calamity-prone areas will also require you to be ready at all time in case a disaster cuts your supply options.

  1. Safety Considerations

Flammability should be your main concern. When running dual fuel generators or any generators in general, remember to consider the flammability of your fuel. Gasoline vapors are typically highly flammable. Diesel is less volatile as it is oilier and heavier thus evaporating slower than gasoline. While diesel has a boiling point that is higher than water, gasoline vapors are emitted at room temperature. In both cases, you still run the risk of spills. Always take your safety considerations first.

Dual Fuel Generators Frequently Asked Questions

What Size of a Generator Do I Need?

The size of a generator is quite important as it determines the efficiency too. It is important for a homeowner to truly understand how much wattage they need. Also, make a comprehensive list of all the appliances, tools and other electrical devices you may need to power when the power is out. This will give you a total breakdown of the wattage of different appliances in your home need and also provide a calculation table so you can make an informed decision on what size is perfect for you.

How to Do the Wiring Setup?

You have an option of getting a transfer switch installed alongside a sub panel for your most sensitive loads for seamless home power transfer. It will cost you an extra charge for electrical fees. Otherwise, you will have to deal with power strips and long power cords.

Do Dual Fuel Generators Suitable for Computers & Other Sensitive Devices?

Please consult with your dual fuel generator specifications. If AC output is indicated as pure sine wave then you are free to use the AC output on anything. If not, keep sensitive electronics away with the exception of laptops as they can work in some cases with non-sine wave power.

Is One Fuel Type More Efficient?

If you want to decide if a dual fuel generator is efficient, you may have to look at the types of gas that you are utilizing. Diesel is fuel efficient, however, it is often not found in these types of generators. Propane is the second most efficient. Gasoline is also fuel efficient. Most gasoline only generators are cheap too hence their popularity. A dual fuel generator allows you to reap the benefits of gasoline and the convenience of having propane close by in case gasoline is not available. Dual fuel generators are, therefore, more efficient.

Bottom Line

Lastly, after extensively reviewing each model, our top picks would be the Champion Power Equipment for its compact size and suitable size for power on the go. For maximum power the DuroMax is a good choice, however, it is louder than other models in our dual fuel generator reviews. If you want a good bi-fuel generator that won’t break the bank, the Sportsman GEN4000DF is a good model that can run for ten hours on either propane or gasoline. At the end of the day when it comes to purchasing the best dual fuel generator for your power needs, it all boils down to your budget and needs. We hope you like our top picks of portable generators and can now make a decision on what is best suited for you.

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