Reviews— Best Dual Fuel Portable Generator / Gas & Inverters

This 9500W Westinghouse (WGEN9500DFc) begins this guide because it represents a standard that other generators should be compared against. You see, Westinghouse has been in business since 1886, and they manufacture a wide range of consumer, commercial and industrial products, including fuel delivery systems for nuclear reactors. My point is, they know how to manufacture things, and in this case, the thing is easily one of the very best dual-fuel generators you can buy.

More on that later. I thought you might want to say “hello” to your potential new best friend, but we’ll see; I’m just here to introduce you to the top models, so don’t worry, I have other potential candidates for you to consider.

I’m Here to Help You Find the Generator of your Life…

What’s the best dual-fuel portable generator in 2023? Well, like the answer to most questions in life, my answer is, “It depends.” There are several things that need to be determined before being able to decide on the most suitable generator for you, but I’m assuming you already know what you need it for. The problem is that I don’t know what you know. This article will show you the best dual-fuel generators on the market, and by “best” I mean, generators that are — reliable, well-made, has practical features and gives you good value for your money.

What’s your budget? What do intend to use it for? A dual-fuel generator gives you more options when fuel is scarce. Gasoline can be usable for about a year (with fuel stabilizers) but propane can last indefinitely, and therefore easier to store for long-term use. There are massive advantages and justify spending the extra money for a quality dual-fuel generator. Yes, they cost a little more but prices are coming down fast as competition increases.

In this article, you will find a mosaic of excellent dual-fuel generators that paid customers seem to love (on average). What are you looking for? Do you want to be ready for the next disaster? Do you want to live off the grid? Do you need a dual-fuel for work? Do you want a compact generator in case there’s a power outage at 4am? There’s something here for everyone. That’s the hope.

⚡️ NOTE— IF you’re specifically looking for an INVERTER Dual-Fuel, then I recommend reading our fully updated dedicated guide to buying an inverter dual-fuel generator. But, don’t leave just yet as we cover both types in this article.

Dual Fuel : Inverter vs Traditional Gas?

If a true inverter generator is outside of your budget then the next best solution is an open frame inverter which gives you clean power (under 3% THD) and for less money.

Good Buy — RV Open Frame Inverter, Dual Fuel

Champion 200914

The Champion 200914 is a GOOD BUY, but the Westinghouse WGen4500DFc is a BETTER BUY.

The 200914 is an excellent open frame inverter capable of running off of propane or gas. Depending on your needs, this solves many problems associated with finding affordable and clean backup power. The open frame design makes it louder than standard inverter generators with an enclosed case, but it’s much quieter than a traditional gas generator.

The quality is excellent with a long history for reliability. If you need more power, buy two and connect them with the parallel kit. The only thing that bothers me about this dual fuel generator is that it doesn’t come with wheels. I don’t understand why wheels aren’t standard on every generator. Fortunately, you can buy the WHEEL KIT SEPARATELY for about $50 — Get the Wheel Kit (40065). Ideal for: Home backup or to power your RV.

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👂🏼 Best Quiet RV / Dual-Fuel Inverter Generator

Westinghouse IGen4500DFc / Thoughtful Compact Design

Westinghouse makes wonderful generators regardless of which model you choose. All of their models are excellent, all you have to do is read the long history of customer comments and you’ll quickly see how good their generators are. The model you need is determined by how you intend to use it, and for it — and then you have to consider your budget.

Their 4500W Westinghouse Inverter (IGen4500DFc, read review) is a better buy than the Champion 200914. Yes, it costs a little more, but you also get a lot more, and you don’t have to buy wheels for it. A favorite of mine, and easily one of the best dual-fuel portable generators for a wide range of applications.

New WEN Model — DF875iX

Most Promising / Best Value Open Frame Dual-Fuel Inverter

Wow! The WEN DF875iX is fresh to the market as I write this in the middle of August, 2023. The features are exceptional, when you look at how little it costs. This is almost as powerful as the Genmax GM9000iED and the Duromax XP9000iH with the main difference being its open frame design.

You get a lot of clean power for the money at 7000W of continuous power and 8750W to start. In fact, the THD is ultra-low at less than 1.2% at full load. That’s an extraordinary number that you’re unlikely to see on even the most expensive brands. The engineers at WEN have been staying up late, developing their proprietary technology to compete head to head with the premier brands..

As you’d expect, it has a CO sensor to monitor carbon monoxide levels with an automatic shutdown system. It has a small 4.2 gallon fuel tank that will give you 6.7 hours of run-time at 50% load. You’ll get a remote start key fob, which you can control from 160 feet away, making it easy for you to turn this generator on from the comfort of your bed. I predict this WEN will end up being one of the top selling dual-fuel generators by the end of the year.

It’s an exciting time to be in the generator business as brands continually revamp their lineup in an attempt to outdo the competition.

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The previous generation Wen DF1100 has been updated with —– ➥WEN DF1100X (with CO Sensor)

Best Cheap Dual-fuel Portable Generator

WEN DF1100X / 8300W Run

GAS = 11,000W / 8300W — Propane = 9500W / 7500W — 120V/240V Dual Fuel Portable Generator. CARB Compliant.

2023 brings us the latest version which now has carbon monoxide monitoring and a few other refinements. It continues to get better with every new version.

FEATURES:

• Gas = 11,000w surge / 8300w running
• Propane =  9500w surge / 7500w running
• WEN Watchdog CO Shutdown Sensor : Instantly shuts down the generator if dangerous levels of carbon monoxide are reached
• Electric start / 457cc 4-stroke OHV engine
• 6.6-gallon tank = up to 8.5 hours of half load run time
• OUTLETS: 4X 120V GFCI 5-20R receptacles / 1X 120V transfer-switch-ready NEMA L5-30R / 1X 120V/240V 50A NEMA L14-50R / 12V DC
• 2-year warranty

OVERVIEW —

Not much has changed with the updated WEN DF1100X. The primary change is with the addition of the the WEN carbon monoxide monitoring system they call “Watchdog.” This is becoming standard across the entire industry. Upon close inspection you’ll be able to see various changes in the color scheme. Some components have changed from chrome to black, or from black to orange, etc. This is all cosmetic. The engine remains the same, as well as the power output numbers.

As far as value, WEN is a top consumer brand offering low cost products while maintaining a high quality level. It’s hard to beat WEN if all you need is a reliable generator with no frills or special features. The WEN DF1100X is one of the best cheap dual-fuel gas generators for emergency home backup. It has a 50A outlet which will easily connect to your home transfer switch, or a 30A if that’s what you need.

✓ Read our full review of the original Wen DF1100 (11Kw Portable Generator).

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Should you Buy an Inverter Dual-Fuel or a Gas Version?

Facts about Modified & Pure Sine Waves

Inverter generators are superior in almost every way, and because you can run them in parallel, you can buy two of the biggest inverters and have 18,000W of power, matching the biggest portable gas generators.

Gas generators have been the standard for a long time. Truth is, they’re not the best source of power, but they are the cheapest. They are noisy, inefficient, bulky and produce dirty power that can’t be used for all applications. In other words, traditional gas generators have limitations. Everybody hates the sound of a running gas generator. If you have a choice, I recommend an inverter dual-fuel for more flexibility.

Fact: If you want to be able to safely power your sensitive electronics you need a generator with a Total Harmonic Distortion (THD) under 5%. Some premium gas generators do produce clean power, like the mammoth 28,000W Westinghouse WGen20000. Unfortunately, it’s not a dual-fuel. Most gas generator have high THD, anywhere from 10% to 23%.

An open frame inverter like the Champion 200914 will give you the best of both worlds — clean power in an affordable package.

What type of devices require a pure sine wave?

The Problem with Dirty Generator Power

Gas generators produce a “modified sine wave,” also known as a “dirty” sine wave. A modified sine wave will cause distortions in some electrical devices. For example, if you connect a gas generator to your home transfer switch, you will be able to run your microwave BUT, it will cook slower, will produce an audible hum, and run hotter.

Also, a modified sine wave will produce electrical noise that you’ll actually hear in your: fans, fluorescent lights, audio amplifiers, TV’s, Video Game consoles, Fax machines, etc.

Anything with an AC motor will run, but it will run less efficiently. And FYI, your fridge has an AC motor.

Calculate all of the Facts

In the end, you need to buy the generator that makes sense for your situation. I completely understand. At the moment, the economy is sinking and millions of people are struggling, so where do I get off in recommending people to spend more money. I’m simply here to present the facts and I trust that you’ll choose what works for you.

I personally hate the roar of a gas generator. The sound drives me crazy so I definitely have a strong opinion on this, but besides the sound, if you truly want reliable home emergency backup power then a pure sign wave inverter generator means you can run everything in your home, safely. We can’t escape the fact that we all rely on sensitive electronics which we never had 15 years ago.

Back then a gas generator wasn’t going to ruin anything we had. The world has changed and the quality of power we require has also changed. If it was 1976 then a gas generator would be okay, but in 2023, as we are surrounded by sensitive electronics, an inverter dual fuel generator sounds like a wise place to put your money. When the power goes out, we never know how long we’ll need to be self-reliant. Ultimately the choice is yours to make. Another option is to get a smaller battery power station to keep your personal electronics charged and leave your gas generator for the big stuff.

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Why Buy A Dual-Fuel Generator?

A dual-fuel generator gives you the best of both worlds because they can run on either gas or propane. The advantage of propane is that it never goes bad, whereas gasoline can last up to about a year, with fuel stabilizers.

When fuel is scarce, a dual-fuel model is a lifesaver, and in times of a natural disaster like a hurricane, you’ll be thankful to have the option to get power from either fuel source.

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Buying Guide + Reviews of — Older Dual-Fuel Generators

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Think of all of the things you rely on electricity for every day – the refrigerator, the A/C, heating, etc. Now imagine getting hit by a storm that left you without power! A generator can do much more than simply provide a practical solution to keep the lights on. It could be a very valuable necessity.

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Are Dual-Fuel Generators Better?

All generators consist of an engine which requires some type of fuel source in order to run whether it’s gasoline, liquid propane, diesel, or natural gas. The gas-powered generators are typically your most popular as they are more affordable. A dual fuel portable generator, however, is made to run on either gas or propane.

Why does having this option matter? Most consumers have a fuel preference between gas vs. propane, however, having the versatility of choosing either-or can be very beneficial in the event that one of the two resources isn’t available. Let’s say there is a power outage. This is the most likely time that you will need a generator, right? If you are unprepared for a sudden blackout and have no gasoline readily available to run your gas-powered generator, you could be out of luck if the local stations are without power as well.

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Advantages of Fuel Flexibility with Dual-Fuel Generators

What if you live in an area that may be prone to hurricanes or blizzards? A natural disaster such as either one of these can leave you without power for days. With a dual fuel portable generator, having the option of using one of two fuel options is like having two generators for twice the run-time. When one runs out, simply switch over to the other and you’re good to go.

Another factor that should be considered when purchasing a portable generator is fuel storage and temperatures. Gasoline is often the popular choice because of its affordability. The downside to gas is that it has the shortest shelf-life since heat will cause it to evaporate. Propane, on the other hand, will last indefinitely.

With propane, however, cooler temperatures that are below 40-degrees Fahrenheit will naturally cause it to contract, resulting in a drop of pressure in the propane tank. This drop in pressure may not give enough force to start up a generator on propane alone. A dual fuel portable generator gives you the best of both worlds with the option to run your unit on either fuel source during an emergency, no matter the climate.

So for instance, you could store your unit during the summer months with propane and you’ll always be prepared if you run out of gas for a blackout or taking along on camping trips. During the winter months, you could start the engine of your dual fuel generator on gas and after a few minutes simply switch it over to propane.

Are Dual Fuel Portable Generators Less Effective?

Contrary to what you may think, a dual fuel portable generator option does not reduce the quality or the effectiveness of the amount of power you will get from running one of these. Whether you need it to run small power tools on a construction project, power up small appliances in your RV, or power the heating and cooling system of your home during a power outage, these will get the job done just as well as a single fuel generator. There is a wide range of options to choose from in sizes and output among these portable generators so it all depends on what your needs are.

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— Recommended Accessory / Best Home Transfer Switch

▶ Connecticut Electric EGS107501G2KIT

Generator transfer panel : Enables you to connect your generator to your home.

This transfer switch is designed to handle generators up to 7500W. It can connect directly with its 30A Nema L14-30 (120/240V), allowing you to power your 240V appliances. You have the option of installing it to use the 240V circuit or to install two 120V circuits. Make sure you have it installed by a certified electrician as to avoid creating any fire hazards. It’s not worth the risk in trying to save a few dollars. Safety should be your top concern.

FEATURES—

• FOR generators that have up to a 30 amp output, Nema L1430. With easy-to-follow instructions, this unit is incredibly easy to install and is a cheaper alternative to running your portable generator without it.
• 2 pole circuits and allows 240-volt circuits, making it perfect for well or water sump pump applications. If one of the installed 2-pole circuits are not needed, the tie bar can be removed to allow for 2 single pole circuits.
• INDOOR OR OUTDOOR: to be used either indoors or outdoors and have a NEMA 3R rainproof rating
• compatible with all residential load centers including: Challenger, Cutler Hammer, GE, Home line, Siemens, Square D, and Westinghouse load centers.
• POWER SURGE PROTECTION: The double throw rocker switches absolutely eliminate the possibility of power back feeding to the utility line or to your generator when power is restored. All Connecticut Electric products are ETL listed, ensuring its compliance to UL Standard.

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Effectiveness of a Dual-Fuel System

While single fuel generators are the typical choice for homeowners, dual fuel portable generators and even tri-fuel generators are becoming more popular due to their versatility. If you already own a portable generator, you can even purchase a conversion kit from certain companies that can transform your current generator to run on propane or natural gas. Keep in mind this is much more costly to do and you may need to buy additional parts to modify your generator for the kit. Unless your unit is fairly new, you’re best bet if you are wanting the benefit of two fuel choices is to just go out and buy a dual fuel portable generator.

What Size Generator Do I Need?

This is a common question that homeowners want to know, and rightfully so. It’s important to understand what total wattage you truly need. To determine that you should make a list of all the tools, appliances and other electrical devices you expect to run when your power goes out.

Try using one of the online WATTAGE CALCULATORS:

Buffalo Tools, has an practical printable wattage guide to help you determine the right generator size for your needs.

View or download the Generator Guide (PDF). It gives you a full breakdown of how much wattage different electrical devices require and it gives you a handy calculation table (below) to help you decide which generator size is best for you.

Print it out so you can refer to it anytime or use the wattage table to calculate what you need.

How do you convert voltage and amperage to watts? Volts x Amps = Watts

✓Note: LPG stands for liquid petroleum gas  — also known as propane.

Best Dual-Fuel Generators, OVER 4 YEARS OLD / Value Generators

The portable generator market has changed a lot in the past two years, which is unusual as this has traditionally been a market with very little change. But as new standards emerge, such as CO monitoring, and inverter generators becoming more affordable, there’s been a frenzied shift from leading brands to outdo the competition. In addition, there has been a lot more competition as Chinese brands try to enter the market, selling generators with more features and for less money.

In the end, the brands with the best quality generators will survive, and any fly-by-night companies will fade away. My job is to help you buy a generator from a brand that will still be around in five years. Unfortunately, people often just buy the cheapest generator, or the cheapest anything, but this approach is a big mistake when choosing a generator.

This section gives you some options of less expensive generators that have been around for several years already. Because of this, they are cheaper, but don’t have the same features or streamlined design as you find on the latest models. If you don’t care about having the newest technology, then you might find a suitable dual fuel generator for your budget and needs. They are all excellent but might be showing their age in some areas.

▶Recommended : DuroMax XP12000EH — 12,000w Dual-Fuel

The Duromax XP12000EH has been a top selling dual-fuel portable generator for over five years. A lot of these generators have been sold of this model, and all of the models in the series. With over 6000 reviews, it’s rated at 4.6 out of 5. This is an incredible average to maintain over all of these years. This should give you confidence in the quality of this generator. It’s definitely one of the absolute best quality dual-fuel generators in 2023.

The main reason why you’d want to purchase this model is because you need a full range of outlets as it has : 50A (120/240V), and two different 30A outlets. It can handle anything you want to connect it to. In terms of features, it’s hard to beat the XP12000EH as you get the full spectrum of features at a very affordable price, and this is precisely why it’s been a top seller for years. Read the list of features you get:

Fast Facts — DuroMax XP12000EH

• 457cc, 18HP DuroMax OHV Engine
• 2x 120V/20AMP outlets, 1x 120v/30AMP twist lock outlet, 1x 120/240V 30AMP outlet, 1x 50-amp heavy duty outlet (learn about 50A generators)
• Volt meter, circuit breakers, low oil indicator, idle control, and DuroMax’s unique MX2 switch, which doubles your 120-volt amperage for heavy loads.
• Heavy-duty all-metal frame has fully-isolated motor mounts, and an oversized noise reducing muffler.
• Built-in spark arrestor
• Handle kit with tough and durable solid-fill tires.
• All copper windings, that will last for years
• 3-year factory warranty.

Learn more : Read our dedicated review of this long-time best selling 12Kw from Duromax. If you don’t know, Duromax generators are excellent. Yes, I know, it’s not a brand like Honda, Champion or Westinghouse, BUT — the range of features you get, in addition to the overall build quality, makes any of their generators a great buy. Customer satisfaction is quite high, so don’t shy away from spending your money on a Duromax.

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If you’re a first time generator buyer, DUROMAX is a brand you can trust, and they are based in Southern California.

Video — Learn More / Duromax Xp12000EH

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Champion Power Equipment 76533 / Good Reliable Dual-Fuel

6.5 HP / 3,800 watts (gas) / 3420 watts (propane) / 224cc — One of the top-selling and best Dual Fuel Portable Generators in 2019.

View or download the MANUAL for the Champion Power Equipment 76533.

Best for: Powering a fridge, lights, TV, other small appliance or a few household items.

Features:

• 3800 running watts/4750 starting watts (gasoline)
• 3420 running watts/4275 starting watts (LPG)
• 8 hours @ 50% load (Gasoline), 10.5 hours at 50% load with 20 lb. tank (Propane)
• RV Ready – TT-30R outlet
• 120V AC load
• Up to 12 hour run time at 50% load
• 68 dBA at 23 ft.
• Push button electric and easy pull recoil start
• Low oil shut-off sensor
• USDA approved spark arrestor
• 1″ durable tubular steel frame
• Intelligauge – volts, frequency, hours
• EPA-CARB/ 50 state compliant
• Gasoline fuel tank/liquid propane gas inlet
• Fold away handles for safety
• 8″ tires
• Noise level-68 dBA from 23 ft., noise Level- 68 dBA from 23 ft.
• Gasoline fuel tank 3.4 gal.

Overview | Champion Power Equipment 76533

This portable generator will give you the dependability you need in the event of an emergency with a powerful 4-stroke OHV engine that offers 3800 running Watts and peak Wattage of 4750. The power panel offers 4 total outlets with a 120v Duplex outlet, a TT-30 Amp RV outlet to power up an RV, and a 120v twistlock outlet. It has a 3.4 gallon fuel tank which will run for up to 8 hours on a full tank at 50% load. On a 5-gallon/20-pound propane tank, it will run for up to 5½ hours at 50% load.

Video | How to use the 76533 dual-fuel generator:

https://www.youtube.com/watch?v=12ydDSqypCQ

It comes with a 3.3-ft LP hose adapter with a regulator for hookup to a propane tank (not included). For safer operating, there is a fuel selector switch on the unit to select gas or propane. It also features a low oil sensor, overload protection and features an ‘Intelligauge’ to give you information on the volts, hertz, and operating hours.

It has an electric start with the battery included to start up right away on either fuel choice as well as a recoil start if the battery isn’t charged. It does require some assembling to put the wheel kit together, as most do, for portability as well as the handle and hookup for the battery. No worries, it is fairly easy to put together. The wheel kit has a really durable frame with 8” wheels on it and the handles conveniently fold away. The dimensions of the generator with the wheel kit are 26 inches in length, 24.8 inches in width, and 22.9 inches in height to give an idea of the actual size of the unit.

Video | Start-up Procedure

https://www.youtube.com/watch?v=CMW2nxPnWpE

My Thoughts on the Champion Power Equipment 76533

This would be ideal for running an RV on weekend trips to power the air conditioning as it comes equipped with a TT-30 RV receptacle. Or you could simply run a refrigerator and an A/C window unit to keep food from spoiling and maintain a reasonable temperature during a blackout. One really notable factor with this portable generator is that unlike your larger units, this one weighs just a little over 100 pounds for optimal portability. Even with a wheel kit, there may be times that require you to lift the entire unit, such as loading it in the back of a pickup truck!

Includes:

• 8″ never flat mobility kit
• Oil funnel
• Start up oil
• LPG hose with regulator, 3.3 ft.

Best Underrated Dual-Fuel Portable Generator

Pulsar PG10000B16 : 10,000W Dual-Fuel

Pulsar is a fairly small brand with a loyal following. In General, their generators have proven to be quite reliable and well made, and, in the case of the PG10000B16, it’s also quite stylish with the vivid blue color. Personally, I love it. It looks great, especially in the boring world of portable generators.

The PG10000B16 is an older model, several years older, and the advantage of buying an older dual-fuel inverter generator is that there’s a long history of reliability and customer satisfaction so it’s fairly easy to predict the future reliability. I like Pulsar as a brand, but the one issue I have with their products is you only get a two year warranty. Brands such as WEN also gives a two-year warranty so it’s not unusual. I recommend paying a little extra money for an extended warranty if you decide to purchase on Amazon. It’s well worth the extra $108 for an extra 3-years.

Other than that, the features are what you’d expect. You get a 50A and a 30A making this a good dual-fuel generator for emergency home back-up.

Features — Pulsar Dual Fuel

• Gas : 10,000 Peak Watts/8,000 Running Watts
• Propane : 9,000 Peak Watts/7,000 Running Watts
• Switch & Go Capability
• 420cc, 15HP, Single cylinder, 4-Stroke, OHV, Air Cooled
• 12 Hour Run-time at Half Load (Gas)
• 6.6 Gallon Fuel Tank
• Outlets : (4) 120V Outlets, (1) 120V/240V Twist-Lock Outlet, (1) 120/240V 50A RV Port
• Electric Start with Recoil Back-Up

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DuroMax XP4850EH / Good Light-Duty Dual-Fuel

Dual Fuel Portable Generator : 7 HP / 4,850 watts / 206cc

View or download the MANUAL for the DuroMax XP4850EH dual fuel portable generator.

Features:

• Max AC output: 4,850-Watt rated AC output: 3,850-Watt
• 7 HP Duromax air cooled OHV engine with low oil indicator lamp and shutoff
• Quiet exhaust with built-in spark arrestor
• Electric key and EZ-pull recoil start
• Two 120-Volt 20-Amp 3-prong outlets (standard household plug)
• One 120-Volt/240-Volt 30-Amp twist lock (NEMA L14-30 3 pole 4 wire)

Overview | DuroMax XP4850EH

When it comes to portable generators, DuroMax is one of the leaders for innovation. This 7-horsepower engine has a full power panel that will give you the power you need to run your necessities when disaster hits, leaving you in the dark.

VIDEO / A Closer Look at the XP4850EH

It can deliver a constant output of 3,850-Watts and a maximum output of 4,850-Watts. On the power panel, there are two standard 120v 20-Amp 3 prong outlets and a 120v/240v 30 amp twist lock to run your basics in the unfortunate event that a storm causes a power outage. The 4-gallon fuel tank will give you about 8 hours of running time on 50% load. There is a fuel gauge and a low oil indicator that can both help you to extend the life of your dual fuel portable generator.

The entire engine sits on a durable frame with a wheel set for portability and even features motor mounts on each corner to reduce the amount of noise while the generator is running. It also has a quiet exhaust. The only assembly required is for the frame of the wheel kit and handles which is pretty straightforward. The unit comes with the instructions as well as the hardware that you’ll need to get it assembled and running. Additional features to mention: there is an auto idle control feature on the unit and it will automatically shut-down when low oil level is sensed.

My Thoughts on the DuroMax XP4850EH

When running a portable generator you can expect it to be loud. However, this one isn’t terribly obnoxious with a decibel rating of 69. To put this into more perspective for you, it is about as noisy as your average lawnmower. It’s a sound you will be grateful for when you need it most. Similar to the Champion unit previously mentioned, this generator set is a bit on the lighter side at a maximum of 130 pounds, which is helpful on the back when wheeling it around.

Completely assembled, the dimensions are 36 inches long, 21 inches wide, and 24 inches in height. I should note, this particular unit is not CARB-compliant (California Air Resource Board); however, it is EPA-approved which means it’s perfectly safe for use in national parks should you wish to take it along on a camping trip. Just don’t run the unit in a closed-in garage – which should be common knowledge when it comes to generator safety use and carbon monoxide.

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DuroMax XP10000EH / Best Range of Features

Excellent Older Dual-Fuel Portable Generator

18 HP / 10,000 watts / 419cc — This is one of the most affordable and popular dual-fuel generator you’ll find. DuroMax offers a lot of great features, with great reliability, at a very affordable price.

Features:

• Use regular gasoline or liquid propane. Perfect for emergencies when gasoline is scarce.
• Powerful 18 HP engine.
• Equipped with low oil protection, AC and DC regulators, and a spark arrestor.
• Dependable DuroMax 18hp engine with cast iron sleeve and steel bearings maximize engine life; rated ac output: 8000 watts; max ac output: 10,000 watts.
• Outlets: 2-120v 20 amp 3-prong outlets/1-120v 30 amp twist lock/1-120v/240v 30 amp twist lock/1-120v/240v 50 amp heavy duty outlet/1-10a 12v
• Full power panel with advance oil warning light, key start switch, volt meter, circuit breaker and power outlets.
• Super quiet exhaust, 72 dba measured from 7 meters w/ built-in spark arrestor.
• EPA Approved Engine. Not available for shipment to California.
• ✓ View or download the MANUAL for the DuroMax XP4850EH dual fuel generator.

✓If you want something smaller and less expensive then you might be interested in the DuroMax XP4400EH which is also a dual fuel generator. It’s rated at 4,400 watts (7 HP).

VIDEO : A Closer Look at the XP10000EH

Overview | DuroMax XP10000EH 

If you’re looking to step it up a notch, this powerhorse of a portable generator may be more up to speed. It has an 18-horsepower engine with an 8000-Watts rated AC output, 10,000-Watts maximum AC output. It contains two 120v 20mp 3-prong outlets, a 120v 30 amp twist lock outlet, 120v/240v 30 amp twist lock outlet, a 120v/240v 50 amp heavy-duty outlet, and a 10a 12v outlet to give you optimal usage to power up whatever you need.

It can switch over from gas to propane-fueled power in a matter of seconds and contains a flexible hose that will connect to any size propane tank. The electric start key is really easy to use to get it going and it also has a recoil starter. There’s also a low-oil indicator that shuts off the generator to protect the engine. The fuel tank holds just a little over 8 gallons and the unit can run for a maximum of 10 hours on either gas or propane (this is based on a 20-pound propane tank you typically use to BBQ with and may vary on the size of the propane tank you’re using) at 50% load. It comes equipped with both AC and DC regulators.

My Thoughts on the DuroMax XP10000EH

At 10,000 watts this generator gives you plenty of power to run heavy electrical loads at the same time as small appliances. The tires are Solid-Fill, which means they won’t go flat on you. This is really beneficial when storing the unit for an extended period of time. The last thing you’d want when the power suddenly goes out is a portable generator that is not so portable as a result of flat tires, especially considering this big boy weighs a hefty 255 pounds!

It’s also considerably larger than the other generators with dimensions of 40 inches in length, 29 inches wide and 32 inches in height. This may be something you will need to factor in when determining where your portable generator will be stored.

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Champion 100165 / 7500W Run

Excellent Older Generation Dual-Fuel

Features:

• Dual Fuel Technology with Fuel Select Switch for safe fuel conversion between gasoline and propane/LPG gas.
• Will run up to 8 hours on gasoline on full tank of gas (6.1 gallon tank) or run for up to 5 hours on propane/LPG 20 lb./5 gallon tank at 50% load (propane tank not included).
• Includes 3.3’ propane connection hose with regulator to connect propane tank to generator.
• 439cc OHV engine with Cast Iron Sleeve for durable. Includes low oil shut off sensor, Cold Start Technology and Quick Drain oil system.
• Electric start with 12V 15Ah Battery (included) for easy one-touch push button starting. Has a battery maintenance charging adapter to keep battery charged when not in use or stored.
• Less than 5% THD (total harmonic distortion) Alternator provides pure sine wave to power sensitive electronics like computers, TV’s, laptops, furnace fans, etc.
• Heavy duty 1.375” steel frame with isolation motor mounts makes it quiet when operating.
• Portability Kit includes 9.5” Never-Flat Wheels. U-Shaped Handle for easy mobility
• Intelligauge:  Digital meter that measures Hour/Volt/Hz, to keep track of run-time for scheduled maintenance.
• Quick drain oil hose for easy oil changes (recommended every 50-100 hours of operation).
• Cold Start technology enables easy starting in cold or warm weather
• Automatic voltage regulator for overload protection that protects the generator and your appliances.
• EPA and CARB Emission Certified (50 States).

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Is a Dual Fuel Portable Generator right for You?

Buying a generator in the event of a major power outage is not likely something people often think about, but should you experience one you’ll be glad to have one of these on hand. Keep in mind, these aren’t intended as whole-house generators that automatically switch on in a power outage. They must be manually turned on either by turning on the electric start switch or pulling a recoil starter. If you frequently experience power outages where you live for extended periods of time then you may want to consider a whole-house generator, but I won’t get into that. A portable option can offer far more versatility for multiple uses.

Whatever the circumstance may be from being prepared for emergencies or to run a camper for outings, a dual fuel portable generator will provide you with great convenience for your needs. Having the option to choose among the two fuel types ensures that you will always be prepared. So whether you’re a gasoline or propane type of person you have the flexibility to choose!

Note: As the generator market is always changing, this article is also changing and evolving over time. Below you will find reviews of dual fuel generators that are now discontinued or for some reason no longer available. We are keeping this information accessible for reference purposes as sometimes retailers still sell old stock.

Discontinued or Not Available : Reference Only

Smarter Tools ST-GP7500DEB

Dual Fuel Generator : 15 HP / 7,500 watts / 389cc

View or download the MANUAL for the Smarter Tools ST-GP7500DEB.

✓Best for: Power your refrigerator, well pump, microwave, heater blower and lights.

Features:

• 7500 Starting Watts, 6200 Continuous Watts (6750/5580 on propane)
• 9 hours at 50% load on 6.6 Gallons of Gasoline.
• 389cc 4-stroke Air cooled OHV motor.
• Four 120V 20A outlets, a 120V 30A Twist-lock AC (L5-30R), a 120/240V (NEMA L14-30R) 30A Twist-lock outlet, and one 12V 8A DC-Multiple options for providing power.
• Overload protection: Protects the generator and your appliances.
• 73 dB Noise level : Quiet Operation spark arrest muffler.
• Low oil shutdown : Extend the life of your generator.
• Digital Hour/Volt/Hz Meter : Hour meter-Keeps track of run-time for scheduled maintenance and Volt meter-Assures correct voltage for your appliances.
• Fuel gauge-Easily know when you need to add fuel.
• 10” No-Flat wheels and handle kit-Easy portability.
• EPA and CARB approved.

Overview Video

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Champion Power Equipment 71531

Dual Fuel : 15 HP / 7,500 watts / 439cc

The 71531 is discontinued. The 100165 model is identical, but the output is slightly lower at: 7000 rated watts and 9000 starting watts. Everything else about these generators is the same.

View or download the MANUAL for the Champion Power Equipment 100155.

View or download the MANUAL for the Champion Power Equipment 71531 generator (discontinued on Amazon).

Overview | Champion Power Equipment 71531

Fuel Selection Switch
Designed with fuel safety in mind. Specially designed fuel selector switch’s safety feature only allows the operator to select and use one type fuel at a time. Using only one type of fuel at a time is for the operator’s safety.

Run Time
Your generator’s run time will fluctuate depending on ambient temperature, elevation, and the amount of load it has to generate for consumption. During optimal testing scenarios, here are the results:

• Gasoline run time has been tested to run for 8 hours at 50% load for an almost full tank. (Leaving a 1/4 in. gap in the tank to allow for fuel expansion)
• LPG (propane) run time has been tested to run for 4-5 hours at 50% load, for a standard 20 lb. cylinder. LPG run time can also vary in hours depending on size of the cylinder used.*

*To ensure a safe connection, contact a local installer of larger LPG cylinders if you plan on using an LPG cylinder larger than a standard 20 lb. or 30 lb. unit.

Fuel
Champion Power Equipment’s dual fuel generators were designed to use only two (2) types of fuels, Gasoline (petrol) and LPG (liquid propane gas). The engines are also certified to specific emission standards for both fuels, so any modification of the generator and/or engine to any other type of fuel may VOID the warranty.

Temperature
Temperature impacts your generator running time, as well as oil use and consumption. Champion Power Equipment designs all of its motors with a low oil shut-off feature that will instantly shut off the engine if the oil level falls below a certain threshold. Under normal temperature operating conditions, regular 10W-30 automotive oil is recommended. For specific temperature ranges and oil type use consult the owner’s manual.

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Sportsman GEN7500DF / Not Available

Dual Fuel Generator — 13 HP / 6,000 watts / 389cc

View or download the MANUAL for the Sportsman GEN7500DF.

Includes: Mobility Kit.

Features:

• 13 HP 4-Stroke OHV Engine
• 7,500 Surge Watts / 6,000 Running Watts
• Electric & Recoil Start
• Dual Fuel Gasoline / Propane Engine
• Automatic Low Oil Shutdown
• Engine Shut-off Switch
• (1x) 12V DC Outlet
• (4x) 120V Outlets
• (1x) 120/240V Outlet
• (1x) 120V RV Outlet
• 6.2 Gallon Fuel Tank
• EPA Approved
• Engine Run Time: 9 Hours @ 50% Load
• Engine Noise Level: < 80 dB
• 389cc Displacement
• Oil Type: SAE10W-30 Oil (Must add BEFORE first use)
• Oil Capacity: 25 ounces
• Fuel Type: Propane fuel OR unleaded gasoline octane rating of 87 or higher
• Spark Plug: F6RTC spark plug included

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Champion 100263 / Discontinued

This is the only dual-fuel inverter generator, which is an excellent compact generator that runs on either gas or propane.

Inverter generators have a lot of advantages over conventional gas generators. They are much quieter, which most consumers appreciate. Let’s be honest, generators are generally loud and annoying, unless they are true inverter generators. This is a huge advantage. Also, inverter generators also produce clean power which means you can power all of your sensitive electronics safely. Because of these advantages you’ll notice that inverter generators are more expensive when comparing watts, but in my opinion, they are worth the money.

We’ve written a comprehensive review of the Champion 100263 that I recommend you read if you’re looking for an inverter dual-fuel generator.

Features:

• Dual Fuel Champion inverter generator
• Low oil shut-off sensor
• Electric Start with 3-Position Ignition Switch. Cold Start Technology ensures a quick start in cold weather.
• Battery included
• Quick Touch Panel allows you to access all your controls in one spot
• Perfect for RVs, camping, tailgating, your next project or backup power for your home,
• Clean Power for Sensitive Electronics (˂ 3% THD).
• Easily switch fuels with a quick turn of the fuel selector dial.
• Gas : 192cc Champion engine produces 3400 starting watts and 3100 running watts,
• Will run for 7.5 hours at 25% load.
• Propane : 3060 starting watts and 2790 running watts
• Will run for 14.5 hours at 25% load (20-pound propane tank)
• Smart Economy Mode, which can reduce the electrical load, providing quieter operation, extended engine life and better fuel economy.
• Outlets : 120V 30A RV (TT-30R), two 120V 20A household outlets (5-20R), a 12V DC automotive-style outlet with dual USB adapter, plus a propane hose with a built-in regulator.
• Operates at 59 dBA from 23 feet – about the same noise level as normal conversation.
• Optional Champion Parallel Kit provides a quick clip-on connection which allows you to increase output by connecting up to two 2800-watt or higher inverters. Also included is a standard 50-amp RV outlet with power to start and run two 15,000 BTU RV air conditioners.
• Fully assembled with foldaway handle for easy storage and built-in handles and never-flat tires for easy transport.
• EPA certified and CARB compliant Champion dual-fuel inverter generator
• 3-year limited warranty and FREE lifetime technical support.

✓ View or download the MANUAL for the Champion dual fuel inverter generator (model: 100263).