Both gasoline and propane offer unique advantages when used as generator fuels. If gasoline is easily obtainable, propane is cheaper and also provides cleaner burning.

If we can design a generator that can use both these fuels, we may be able to reap the benefits of both of them at different times.

The good news is that we already have generators to work on both fuels. Yes, these generators are called dual-fuel generators.

Dual fuel generators use both gasoline and propane, thus gives more convenience, flexibility, cost-effectiveness, and reliability in operation.

Here we would share with you the top 9 dual fuel generators with their features, pros, and cons. If you wish to buy a dual-fuel generator, you can select any one of these 9 Gensets with confidence in its performance.

However, before making a final decision, refer also to the additional information about these types of generators provided later in the article. This will help you make an informed decision while buying a dual-fuel generator for your purpose.

Top 9 Dual Fuel Generators

  1. Champion Power Equipment 3400 Dual Fuel GeneratorChampion 3400-Watt Dual Fuel RV Ready Portable Inverter Generator with Electric Start

Champion Power Equipment 3400 is a dual fuel generator. It has a surge output rating of 3400 watts and a normal rating of 3100 watts. The unit can operate on gasoline as well as on propane.

It has a battery, and thus the equipment is an electric start generator. It has a 3-position ignition switch.

The unit also has a simple to operate Quick Touch Button Control Panel. The generator produces 59 dB of average noise level from a distance of 23 feet.

It can provide power supply for up to 7-½ hours with gasoline.

It has two numbers of 120V/ 20A household outlets and one 30 A RV outlet. The unit, therefore, is RV ready. It also comprises a 12 V DC outlet and a dual USB port.

The unit generates very clean output with the Total Harmonic Distortion (THD) of less than 0.3%. It makes the unit very safe for sensitive electronic devices.

The company offers a 3-years warranty and free lifetime support for any technical issues through its trained professionals.

Pros

  • Highly powerful Champion engine
  • 7.5 hours continuous run time
  • Quick touch panel
  • Clean power with THD less than 0.3%
  • RV ready

Cons

  • A little difficult to start

Verdict

Champion Power Equipment 3400 is a highly powerful dual fuel generator that provides a high power output at very low distortion levels.


2. Rainier R12000DF Dual Fuel GeneratorRainier R12000DF Dual Fuel Generator

Rainier R12000DF is a dual fuel electric start generator. It is equipped with a powerful 457 cc engine. With such massive power, it can run many high power appliances like ACs, refrigerators, and water pumps, etc. in your home or work station.

It has a peak power rating of 12,000 watts and running capacity of 9,500 watts with gasoline. With propane, it has a peak capacity of 10,800 watts and the running output rating of 8550 watts. It is also equipped with a 6.6-gallon fuel tank with an auto low oil level shut down.

The unit has a single touch electric start facility. In addition, it also has a backup of the recoil start system.

You can monitor the running voltage and frequency of the output power. Besides, the display of hour-meter reading helps you in planning your maintenances in a timely manner.

The control panel has multiple 120 V outlets besides an outlet of 120/240 V 50A. The generator can provide power for 17 hours at a quarter of the full load. The noise produced while running is as high as 72 dB.

To showcase its commitment to the environment, the unit is EPA and CARB compliant. The company offers a 3-year warranty on the model.

Pros

  • Massive 457 cc engine
  • High power output
  • 17 hours run time
  • Multiple power outlets
  • EPA & CARB compliant
  • VFT display

Cons

  • Lacks 12 VDC port

Verdict

The 457cc powerful engine can provide power to all your home appliances for a very long duration of 17 hours.


3. Sportsman GEN4000DF Dual Fuel Powered Portable GeneratorSportsman GEN4000DF Dual Fuel Powered Portable Generator

With 4000 as the surge capacity and 3500 watts starting output, Sportsman GEN4000DF can run to operate electrical appliances at your home or any of your work stations within the rated output.

The RV ready unit has five numbers of 120V outlets, including one RV. It, in addition, has a 1-12VDC outlet.

The 212 cc engine can run on both gasoline and propane, taking advantage of different fuels at different times.

The recoil-start-capable unit can run for 10 hours on a full tank at half the rated load. The Genset produces a noise level of less than 69 dB.

Pros

  • Both fuels provide a similar power output
  • 10 hours running on a full tank
  • RV ready
  • Easy to operate
  • Multiple outlets

Cons

  • Noise output is on the higher side
  • Not so sturdy due to plastic components

Verdict

This easy to operate dual Genset is wonderful equipment capable of supplying the same power output with both the fuel types.


4. Westinghouse WGen3600DF Dual Fuel (Gas and Propane) Electric Start Portable GeneratorWestinghouse WGen3600DF Dual Fuel (Gas and Propane) Electric Start Portable Generator

Westinghouse WGen3600DF is a dual fuel generator set with a 212 cc Westinghouse engine. The 4-stroke OHV engine has a peak output of 4650 watts and a rated capacity of 3600 watts on gasoline. On propane, it has the rated output of 3240 against the peak capacity of 4650 watts.

It consists of a fuel tank with a capacity of storing 4 gallons of fuel. Besides, it also has a low auto oil shut down the system. You can use either the electric push-button or the remote to start the equipment.

It supports multiple outlet systems, including 120 V duplex outlets and also a 30 Amp RV outlet. The heavy-duty generator has cast-iron engine sleeves.

The unit is equipped with a mobility kit, making it very easy to install and move.

The EPA and CARB compliant machine comes with 3-years limited service warranty covering labor and spare parts.

Pros

  • Powerful Westinghouse engine
  • RV ready
  • EPA and CARB compliant
  • Easy to install through the play and plug kit
  • Easy to operate

Cons

  • The power supply has high THD

Verdict

Easy to operate Westinghouse WGen3600DF is one of the most powerful and easy to use generators in the dual fuel generator category.


5. Champion Power Equipment 7500 Dual Fuel Portable Generator with Electric StartChampion Power Equipment 7500 Dual Fuel Portable Generator with Electric Start

Equipped with a 439 cc powerful Champion engine, the Champion Power Equipment 7500 can supply power to multiple electrical appliances in your home or any workstation.

The Genset has a rated output of 7500 watts while having peak output as high as 9375 watts on gasoline. On propane, it can deliver an output of 6750 and 7500 watts, respectively.

The dual fuel generator can also hold 1.2 quarts of oil and has an auto low oil level shut-down system.

The electric start unit includes battery and an easily operable toggle switch. You can easily monitor the running voltage and frequency of the output power through the smart display. Besides, you can also record running hours of the unit to plan for the timely maintenance of the generator.

The equipment is highly durable, thanks to the tubular steel frame with a diameter of 1.5”. The company, in addition, provides a 3-years warranty with free lifetime support through a team of professionals.

Pros

  • Highly powerful Champion engine
  • Rugged and durable
  • Display critical running parameters
  • Reliable performance
  • Easy to operate

Cons

  • High vibrations at full load

Verdict

Champion Power Equipment 7500 is a combination of sophistication, ruggedness, and high performance. The dual fuel generator is very easy to operate.


6. Pulsar Products PG10000B16 Portable Dual Fuel GeneratorPulsar Products PG10000B16 Portable Dual Fuel Generator

Pulsar Products PG10000B16 is a dual fuel generator capable of operating on gasoline and LPG. The rated output for both the fuels is 8000 watts and 7000 watts respectively, whereas the peak capacities are 10,000 watts and 9,000 watts respectively.

The 420 cc engine has a powder-coated steel frame, thus providing the 4-stroke, OHV engine high durability.

The power equipment is capable of running for 12 hours continuously on a 50% load with gasoline- thanks to the high capacity 6.6-gallon fuel tank.

The changeover between the fuel sources is very simple. The switch & go system ensures that there is absolutely no disruption during the changeover.

You can use an electric start push button. The unit also has a recoil start system as a backup option.

Pros

  • High power output
  • Powerful and durable engine
  • RV ready
  • Smooth changeover between two fuel types

Cons

  • Higher noise levels with vibrations

Verdict

If you are looking for a powerful generator capable of catering to all your power requirements during power outages or even for regular running, Pulsar Products PG10000B16 makes for a perfect dual fuel generator.


7. DuroMax XP12000EH 12000-Watt 18 HP Portable Dual Fuel Electric Start GeneratorDuroMax XP12000EH 12000-Watt 18 HP Portable Dual Fuel Electric Start Generator

Equipped with a highly powerful DuroMax engine, XP12000EH has a surge output capacity of 12,000 watts and a running output rating of 9,500 watts.

The 18 HP, 457 cc OHV engine can run on propane and gasoline. With the high running output rating, the dual generator can cater to multiple heavy load appliances, including ACs, refrigerators, geysers, and water pumps, etc.

The generator is capable of running on 120 V, and 240 V simultaneously and also can operate separately at 120 V with 100% power.

It has built-in wheels that allow for an easy movement. The unit is eco-friendly and has been approved by EPA and CARB in all the states.

Pros

  • High power rating
  • Operable at 120 V and 240 V
  • EPA & CARB compliant
  • Powerful engine
  • Built-in wheels

Cons

  • No hose to connect the propane tank

Verdict

The all-powerful generator is capable of providing power to all your home appliances or electrically operated workstation. The built-in wheels make it super-easy to move.


8. Fortress Hybrid 4400 Watt Dual Fuel GeneratorFortress Hybrid 4400 Watt Dual Fuel Generator

Fortress Hybrid dual fuel generator is a heavy-duty generator equipped with a 7.0 HP Engine. The air-cooled engine also includes an automatic low oil level shutoff system.

It has an electric key start function to allow for an easy start as & when required. With a maximum power rating of 4400 watts, this Genset is capable of running on gasoline as well as on propane.

The power panel of the equipment includes a voltmeter to display output voltage of the generator, circuit breaker to protect the unit from the overload, and power outlets to connect to different outputs and also Engine Shutoff.

To reduce the effect of noise produced during the operation, the power equipment is fitted with mufflers, thus making the unit ultra-quiet while running.

Pros

  • Heavy-duty and durable
  • Single-step start function
  • Ultra-quiet operation
  • Fully equipped power panel
  • User-friendly

Cons

  • A little tricky to assemble

Verdict

If you are in search of a generator with a heavy-duty engine and user-friendly functions, the ultra-quiet Fortress Hybrid dual fuel generator would be a perfect choice for you.


9. DuroMax XP4400E Gas Powered GeneratorDuroMax XP4400E 4400 Watt Gas Powered Generator

The 7.0 HP, 196 cc DuroMax engine, is the power generator of XP4400E Genset. With a surge capacity of 4400 watts and the running output of 3500 watts, the equipment can supply power at half the rated output for 8 hours continuously.

The unit is capable of catering to the small lighting loads to the heavy loads of ACS and refrigerator with equal effectiveness.

The convenience features in the Genset include low oil level shut off, one-touch electric start, and auto-throttle system making it very easy to operate. Auto-throttle not only helps in improving fuel efficiency but also helps in reducing the noise levels during lower load conditions.

The power panel includes four numbers of 120 V 20A outlets. Besides, you can take either 120 V & 240 V power output simultaneously or can use 120 V with 100% power.

Moreover, to provide protection from the spark, the unit is built with a spark arrestor on the muffler.  The built-in wheels allow easy mobility to the generator for transferring from one place to the other.

XP4400E is EPA and CARB compliant for use in all the states.

Pros

  • Powerful DuroMax engine
  • One-touch electric start
  • Auto-throttle system
  • Multiple outlets including 120V and 240V
  • The built-in wheel provides easy mobility

Cons

  • Not so quiet on full load

Verdict

If you are looking for a powerful and highly reliable engine that offers a high level of convenience of operation apart from catering to your all essential power needs, you do not need to look beyond DuroMax XP4400E.


Dual Fuel Generator Buying Guide

Buying a generator is a big decision. You cannot hastily decide on any generator just by superficially viewing its features. You must make an informed decision for such purchases requiring high investment.

Therefore, you must not only know why you are buying a particular model of the Genset but also why you are buying a particular generator type. So, if you want to buy a dual fuel generator, you should have in-depth knowledge about these types of generators.

To help you out in getting the right information, we would share with you some of the most important factors you should be aware of before deciding on the type and the model of the generator.

What is the difference between single fuel and dual fuel generators?

The basic difference between a single fuel and dual-fuel generators is very obvious. A single fuel Genset can run only on one fuel, while a dual-fuel generator can run on two different types of fuels.

The second big difference is in the cost-saving that dual-fuel offers. Though these generators are costlier than the single fuel types, yet the running cost of these Gensets is comparatively lower as with the dual-fuel option, you can select the fuel that is cheaper at a given point in time.

The flexibility offered by these generators avoids the need to store the fuel in large quantities and thus saves on the storage maintenance cost as well.

Dual fuel generators are more dependable because if one of the sources is not available due to some reason, the generator can run on the other fuel source.

Why Should I Get A Dual Fuel Generator?

Many homeowners feel that dual fuel generators are meant only for industrial purposes and do not offer any added advantage for their home power needs. Secondly, there is a common perception that dual-fuel engines are more complicated to operate and maintain.

However, these presumptions are far from being true. They are not only as simple to operate as the traditional generators rather, in some aspects, but they are also easier to maintain due to less fuel storage requirements, etc.

These generators are particularly useful for you if you are living in a storm sensitive zone where the supply of a particular fuel may be an issue in the emergency time. Having a dual fuel system would keep you ready to handle these situations much easier.

Dual fuel generators are also more useful for an outside adventurous purpose, where two fuel sources offer a longer availability of time.

Finally, if you need a generator for the continuous operation going with the dual-fuel would be a much more cost-effective option because of its low operating cost, as explained above.

Dual Fuel Generator pros and Cons

Pros

  • Lower running cost than the traditional generators
  • Offer much more flexibility
  • Extremely useful in emergency situations like a storm where the supply of a particular fuel is restricted
  • Offers longer run time
  • More eco-friendly
  • More reliability
  • Less storage requirement and associated maintenance cost

Cons

  • High initial investment cost


What to consider when buying a dual fuel generator?

The following are the few factors that you should consider while buying a dual-fuel generator.

Initial Investment

You should look for a good generator that comes within the range of your budget. If you have constraints in the budget, you should avoid going for the equipment with some fancy features.

You should rather go for a high performing generator with simple features.

Fuel Shelf-life & Storage conditions

The dual-fuel generators often use gasoline and propane as the two fuel options. Gasoline is an easily available fuel; however, it has a very short shelf life. Propane, on the other hand, has no shelf life constraints in normal temperature conditions. However, at temperatures lower than 40oF, they cause a drop of pressure and thus pose starting trouble. So, consider your storage conditions before finalizing the generator.

Output Rating

You need to assess your power requirement properly by adding the power rating of all the appliances you want to connect to the Genset.

Buying higher than the required rating would unnecessarily cost you high on the initial investment, while the lower rating would not be able to supply power to all the essential equipment in your home or workstation.

Safety

Gasoline is highly flammable fuel. So, ensure that not only is your generator compliant to all the required safety norms also ensure to maintain safe conditions while installing and running a dual-fuel generator in your premises.

Noise Level

It is an important criterion to be considered while buying a generator. The high noise-producing generators may cause you a lot of disturbance while performing your activities. Moreover, it may also irritate your neighborhood and create issues with them.

So, prefer a low noise level generator.

In case you do not get one, try to install the unit away from the working area of you and your neighbors. You may even consider an enclosed area to install the generator set.

Other Features

Different manufacturers offer different convenience features that you can consider as per your requirement. These features may include Auto shut-off, Electric start, Control panel features, and Remote control, etc.


Final Thoughts

After going through the article, you would have realized that the dual-fuel generators offer many advantages over the traditional generators.

However, not all dual-fuel generators would be equally beneficial. And that is why we have shared here the nine best dual-fuel generators shortlisted after conducting an extensive study of several available brands in the market.

Based on your requirement, you can select any one among these nine generators that you find as the most suitable for your specific requirements.


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