Best Dual Fuel Generator: Top 7 of 2020

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Dual fuel generators thrive during emergencies (i.e. shortage of gas, increased gas prices, etc). In fact, it allows you to use both propane and gasoline to continue giving you the power to keep your appliances running.

The best dual fuel generators are nice and quiet, have a large tank capacity – and of course, have a HUGE power output.

On the other hand, a bad dual fuel generator is nothing but an expensive noise-making machine (don’t get me started on freezing engines or motor gas leaks).

To help you separate the good from the bad – we’ve reviewed the Top 7 Dual Fuel Generators in 2020.

Buy with the confidence that you’re buying one of the best dual fuel generators on the market. Let’s get straight into the reviews.

best overall rating
Duramax Dual Fuel Generator
  • Dual fuel technology
  • Electric start is fast and convenient
  • Huge 3850W running watts
premium choice rating
Champion Dual Fuel Generator
  • Massive 3800W running watts
  • Huge 10.5 hour battery life
  • Reduced noise
great value rating
Sportsman Dual Fuel Generator
  • Environmentally friendly
  • EPA Approved
  • Great price (very cheap)

Top 7 Best Dual Fuel Generators

Duramax Dual Fuel Generator – Best Overall

DuroMax XP4850EH 4850 watt Dual Fuel Hybrid generator with Electric...
  • Your purchase includes One DuroMax XP4850EH 4850 watt Dual Fuel Hybrid generator with Electric Start, One oil funnel, One spark plug wrench, tools set, wheels and handle kit,...
  • Portable Generator dimensions: 24” L x 17" W x 17" H. Product weight: 127 lbs
  • Specifications: Noise level – 69 dB. Fuel tank capacity (GASOLINE) – 3.96 gallons. Suggested tank size (PROPANE) – 20 gallons

As its “dual fuel” moniker suggests, the Duramax Dual Fuel Generator accepts both propane and gasoline as fuel. Gasoline is cheaper and is more commonly available. However, propane has a longer shelf-life and burns clearly. Duramax has a 20 hour run time average when using propane, and 8 hours when using gasoline. 

For users that don’t like to manually start generators, this is the right device for you. The Duramax Dual Fuel Generator includes an electric start for quick startups. Just in case the electric start goes out, there is a pull-start that can be used as a backup.

Generators tend to make running noise, there is no getting around that. However, the Duramax Dual Fuel Generator is tolerable because it only produces 69 dB of sound. This is equivalent to normal human conversation, which isn’t bad for a generator of its size.

Once the generator is turned on, it operates at 3850 running watts and 4,850 max watts. This is a considerable amount of power, which is good for covering home appliances during power outages. For instance, full-sized air conditioning units and even furnace blowers can be powered via this generator making it a great asset during an outage.

Buyers should look into the Duramax Dual Fuel Generator if they want the most utility. With its advertised features, it can supply more power than many of its competitors. It’s a powerful generator that occupies little space but is still small enough to move on its wheel kit.

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What We Like
  • Huge 3850W running power
  • Electric start is fast and convenient
  • Produces electricity and recreational/personal areas
  • EPA Approved
  • Fully portable and compact
What We Don’t Like
  • Engine freezes periodically

Champion Dual Fuel Generator – Premium Choice

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Champion 3800-Watt Dual Fuel RV Ready Portable Generator with Electric...
  • Dual Fuel: Operate your 3800-watt portable generator right out of the box on either gasoline or propane, plus the unit holds 0.6-quarts of oil (included) and has a low oil...
  • Electric Start: Power up the 224cc Champion engine with the handy toggle switch, battery included
  • Intelligauge: Keep track of voltage, hertz and run-time hours to easily monitor power output and track maintenance intervals

This generator comes with a fuel selector switch that allows users to switch from propane to gas. It is guaranteed to operate at 69 decibels from 23 feet away. Thus, giving users a silent generator that can keep their appliances operating at full power.

Another feature lies in its push-to-start battery. The battery is an internal charger that continues to charge the device while the generator is running. It also comes with a 30V outlet, and there are a 3 prong outlet and a 30 amp single twist lock. Both outlets come with circuit breakers to keep your equipment protected.

The Champion Dual Fuel Generator has a constant power of 3240 watts and a max power of 4275 watts. The device’s Intelligauge (Hz, hours, volts) enables users to monitor service periods and energy production.

We also appreciated the inclusion of a socket or RVs. Not all dual fuel generators come with an RV socket, which further places the Champion Dual Fuel Generator ahead of its competitors.

The generator can last up to 10.5 hours on a propane tank and 9 hours on a 3.4 gal fuel tank. This makes it a great generator for customers who prize power above all other features in their dual fuel generators.

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What We Like
  • Huge 3800W operating power
  • Adequate to operate on delicate gadgets
  • Reduced noise
  • Huge 10.5 hours on a 20 lb. propane tank
  • 3 year limited warranty with FREE lifetime technical support
What We Don’t Like
  • Slightly pricier than alternatives

Sportsman Dual Fuel Generator – Great Value

Sportsman GEN4000DF, 3500 Running Watts/4000 Starting Watts, Dual Fuel...
  • Buffalo Corp is a premier wholesale importer of quality products for home and industrial use at affordable prices.

The Sportsman Dual Fuel Generator is a great option for those needing a budget generator that can use both propane and gas. This generator has excellent build quality, great capacity, and the price is within reach, making it the most economical option on this list.

When it comes to fuel efficiency, The Sportsman Dual Fuel Generator is one of a kind. With a propane tank it can run for 12 hours. When using a 3.6 gallon gas tank, it can run for around 10 hours.

The size of this product is around 2 feet tall and 17 inches long. Users can lift the generator with the handlebars conveniently placed on its sides. Since it weighs in at 90 pounds, the generator comes included with a wheel kit so that it can be moved around with ease.

The generator operates at 3,500 watts (starting wattage: 4,000 watts), you can expect it to run the lights, refrigerator, freezer, and the television. While the power rating isn’t too high, it’s enough to get users through the essential appliances.

Of course, this generator also comes with a few safety features. For instance, it comes with a low oil shutoff feature. It works by automatically turning the generator off when there’s little oil so it doesn’t create a huge accident by drying up.

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What We Like
  • Environmentally friendly
  • EPA Approved
  • 4,000 Watts rated
  • Affordable
What We Don’t Like
  • Doesn’t include the free wheel kit

Firman Dual Fuel Generator

Firman H08051 10000/8000 Watt 120/240V 30/50A Electric Start Gas or...
  • Power when you need it most. The H08051 Hybrid Dual Fuel portable generator is there to get the job done. Best used for emergency power, jobsite, farm/ranch, large RV’s and...
  • 8 gallons 12 hours
  • Delivers true 30A & 50A power

The Firman Dual Fuel Generator is known for its extensive fuel capacity and higher power production. For instance, it features 10,000 starting watts and 8,000 running watts (on gas). When propane is used, it operates at 9050 starting watts and 7250 running watts.

Also, it comes with a Whisper series muffler which reduces its sound to 74 decibels. While this is louder than the top three generators, it’s still silent enough to work without causing too much of a nuisance.

There is a Firman 0HV engine that improves the generator’s performance. When in use, it provides lower maintenance, extended battery life, and faster appliance use. Thus, making it a good choice for those wanting more utility out of their generator.

However, there are some concerns when you run the generator on propane. Consumers stated that the generator’s engine will die even if there is a substantial amount of propane left inside it.

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What We Like
  • Automatic regulator
  • Quiet muffler
  • 12 hours of power
What We Don’t Like
  • Doesn’t fully function on propane

Champion Dual Fuel Inverter Generator

Champion 3400-Watt Dual Fuel RV Ready Portable Inverter Generator with...
  • Dual Fuel – Operate your 3400-watt portable generator right out of the box on either gasoline or propane, plus the unit holds 0.6-quarts of oil (recommended 10W-30) and has...
  • Convenient Electric Start with 3-Position Ignition Switch – Battery included, plus Quick Touch Panel allows you to access all your controls in one spot.Noise Level :59 dBA...
  • Ultra-Quiet Operation – 59 dBA is perfect for RVs, tailgating, your next project or backup power for your home, featuring 3400 starting watts and 3100 running watts with up...

We like the electric battery that allows users to start the generator at the push of a button. Furthermore, the generator is powered by a large 224 cc engine that’s touch-start enabled. Because of this, users will have a strong dual-fuel generator to keep their appliances operating smoothly.

This generator is also equipped with an automatic shutoff feature for when the oil reaches too low of a level. This can help prevent catastrophic failures and safety hazards.

Based on its power output, the generator uses 120V – 31.7A for running amps. And it uses 120V – 39.6A for starting amps. When propane is used, it has 120V – 28.5A running amps and 120V – 35.6A for starting amps.

Build quality is one of the main concerns with this generator, as it’s not made to quite the same standards as the other models we’ve seen so far. Still, it’s a good replacement generator to have if you’re in need of quick appliance power.

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What We Like
  • Ultra Quiet Operation
  • Electric and Recoil Start
  • Air cooled
What We Don’t Like
  • Motor Gas Leaks

Ford Dual Fuel Generator

Ford 11,050W Dual Fuel Portable Generator with Switch & Go Technology...
  • 11, 050W Peak/ 9, 000W Rated (Gasoline) & 10, 050W Peak/8, 100W Rated (LPG)
  • The powerful 457cc, Single Cylinder, 4-Stroke, OHV, Air Cooled Engine is protected by a Heavy-Duty Powder Coated Steel Frame
  • A Large 6. 6 Gallon High Capacity Fuel Tank gives you up to 10 Hours of Continuous Operation at half load when running on gasoline

The Ford Dual Fuel Generator provides 11,050 watts at peak power and 9,000 watts at effective power. Based on its power rating, users can run plenty of appliances during emergencies or power outages.

It includes four-point isolated motor mounts that help reduce the vibration and sound caused by the motor. This ensures that it provides a quiet and smooth operation whenever it’s in use. Also, it has 10-inch nonflat wheels that allows for more portability, as the generator can be carried to virtually any location.

One tank of gasoline is enough to power the generator for 10.5 hours. With propane, it can operate up to 8 hours.

Watch out for the motor that comes with the generator. After 16 hours of usage, the motor might stop temporarily. If this issue occurs, feel free to call for a replacement. Overall, the Ford Dual Fuel Generator is a great choice if you need a simple generator that can handle light appliances.

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What We Like
  • Circuit Breaker
  • Low Oil Shutoff
  • Automatic Voltage Regulator
What We Don’t Like
  • Weak motor

Pulsar Dual Fuel Generator

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Pulsar 5,250W Dual Fuel Portable Generator with Switch and Go...
  • 5,250W peak 4,250W rated (GAS)/ 4,750W peak 3,850W rated (LPG)
  • The powerful 224cc, 4-Stroke, OHV, Air Cooled Engine is protected by a durable Powder Coated Steel Frame
  • 4 Gallon Fuel Tank gives you up to 12 Hours of Continuous Operation at half load when running on gasoline

Last on our list is the Pulsar Dual Fuel Generator. It features Switch and Go technology that allows the user to switch from gasoline to propane within seconds. This makes it a great choice for customers who are often switching between fuel types. 

Another highlight feature lies in its 4 gallon fuel tank. This gives it enough power to run for 12 hours on a 50% tank of gas. With propane, it lasts for 14 hours, giving you enough power to last for a weekend camping trip.

This generator is designed with never-flat wheels and fold-down handles for easy storage and added mobility. As a result, users can carry the generator around without causing too much physical strain. Perfect for the electrician that needs to have emergency power during the holidays.

The power output places it at a disadvantage against the competition. The power the unit produces is either insufficient or not very clean. When in use, the power would not allow the appliances to maintain their batteries. Use this generator as a replacement, as its power might not be able to handle large appliances.

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What We Like
  • 12 Hours continuous operation
  • Switch & Go Technology
  • RV Readye
What We Don’t Like
  • Inconsistent power output

About Blake Sutton

Blake has worked as an electrician for over 10 years, receiving his Journeyman Electrician license in 1998. Looking to take his professional electrical career further, in 2008 he received his Bachelor of Science in Electrical Engineering (BSEE) from the University of Texas in Austin. Blake now works full time as an electrical engineer, specializing in power systems.