The 7 Best Tri Fuel Generators You Can Buy Today 2021

A Tri Fuel Generator is a type of generator that could run on 3 different fuel types, namely NG, or natural gas, Propane or LPG and Gasoline.

The reason for being able to generate electricity using multiple sources becomes useful when one type of fuel source isn’t readily available during emergencies, power outages, severe snow, etc. You can be sure that the generator works most of the time even if you have only one or two fuel types on hand.

The best Tri-Fuel Generators should have the following features- triple fuel capabilities, sufficient fuel capacity, excellent run-time and of course, reliability. It should be able to accommodate the fuel you have on hand when typhoons, hurricanes or when the power grid goes down and you need electricity.

Take a look at the available generators today:

READ THIS – Now most tri-fuel generators are old fashioned and you’ll hardly find them online. To save you the trouble we’ve made a list on alternative Dual fuel generators that are fuel efficient, durable and have modern engineering construct. Find the best alternatives in the table below.

7 Best Tri Fuel Generators – Our Top Picks

Alternative – Dual Fuel Generators

Smart Generators STF9375 – Best Tri Fuel Generator 

Smart Generators STF9375

If you’re planning on running multiple electrical appliances and electronic devices then your top choice should be the Smart Generators Tri-Fuel model. This heavy duty generator starts with 9,375 watts and runs at 7,500 watts when you fuel it up with propane or gasoline.

This generator has an abundance of available outlets- you get 4, 20amp 120v and a larger 30amp, 120v twist outlet for your power needs.

The requirement for running the STF9375 with natural gas starts at 120,000 BTU; there’s also one manual switch for natural gas and a 30am requirement for switching to LPG and gasoline.

The core engine runs at 13hp, which is perfect for when you need to turn on sensitive electronics and appliances. One of the best feature the Smart Generators tri-fuel STF9375 has is its seamless transition to any of the 3 fuel sources via the Brushless Genset.

The STF9375 uses the popular GX390 OHV engine made by Honda. A look at the generator’s side reveals a quick-release mechanism on the 10-foot natural gas hose.

Moreover, you can choose to start the generator using either a recoil or electronic start. When running at 50 percent load, the STF9375 utilizes the 8-gallon tank efficiently and makes it run for a good 13 hours until empty. There’s one low oil indicator feature and a switch for controlling voltage output.

You get a Drainzit and a battery charger with each STF9375 package. While running, the generator puts out 75 decibels of noise, which is acceptable. The smart generator runs on 6,000 watts via natural gas and 7,500 watts on starting.

The Smart Generators Package STF9375 works great when you need emergency power for your electric-based devices.

Pramac Tri Fuel Generator Package

Pramac Tri Fuel Generator Package

The specs of the Tri-Fuel Generator from Pramac is impressive as it sports the OHV GX390 engine from Honda. The package even includes a sturdy wheel kit for lugging around.

Like all the other great tri-fuel generators, this model has a quick-disconnect feature, a low shutoff for the oil part and one hose for natural gas that’s 10 feet in length.

The Pramac Complete Generator shines when it’s fed natural gas and LPG sources. The hose kit is adequately long and makes it easier to put in the needed fuel for the generator to work.

Moreover, the Pramac generator power output start at 7,200 watts during starting and chugs on 6,100 watts while on running mode when being fueled by propane (LPG) or gasoline. Thanks to the power it packs, you can safely run electronics like your PC, smartphones, central AC etc.

The smoke that comes out is one of the cleanest you’ll ever see in generators. Voltage metering is handled by premium-grade alternator equipment.

The Pramac Complete Package Generator puts out awesome electrical power, thanks to the hefty 11.7 hp. You get the following outlets- 4 20amp, 120 volt GFCI outlets and a 30amp, 120 volt twist lock outlet. Each purchase of the Pramac tri fuel generator comes with its own charging components, a battery and a Drainzit.

The Pramac doesn’t disappoint when it comes to performance. You get less than 6% harmonic distortion plus magnetic and hydraulic circuit breakers. The company even throws in a fuel gauge free of charge. The whole generator is encased in a 1 and 1/4th tubular steel frame for maximum durability.

Overall, the Pramac Complete Package can power up most of your appliance and electrical equipment for 12.3 hours with a full load. Starting it up is a snap due to electric and recoil starters. It also has low oil protection

The manual switch for going with propane or gasoline and natural gas is handled exceptionally well.  It also has low Protection – this means when a oil level is low, the engine will shut down to protect against any faults.

When the Pramac takes natural gas, it churns out 5,800 during startup and 4,900 watts on running. You’d be happy to know that the Pramac is lightweight as compared to others at only 200 lbs. and can be moved around with less effort, thanks to the heavy duty wheels.

Honda GX390 – Best Tri Fuel Inverter Generator

Honda Tri Fuel Generator PackageThis tri fuel capable generator from Honda truly is one of the best in terms of performance, durability and reliability. Featuring a 13 HP engine with a couple of twist outlets on the side, the unit comes in with its own Drainzit and charger.

The capable OHV GX390 Honda engine stands at the helm of the Honda Complete Generator. The gas tank has a max capacity of 8 gallons in total and there’s a recoil start for added convenience. Noise level is perfectly acceptable at 75 decibels from 7 meters away.

Users also get a lengthy natural hose kit and a battery charger; assembly is quite easy and it only takes less than an hour to get everything set up and running smoothly.

Starting up the Honda Complete Tri Fuel Generator is a cinch with the electronic start. The manufacturer boasts that you can run the generator for 13 hours, while being half-full.

The gas tank stands at 8 gallons and should be enough to last the specified operation time. For mobility, users get a tough wheel kit; there’s a manual switch that’s compatible at 30 amps as well.

The great thing about the Honda Generator is you get good value for money. The engine of the generator puts out 120,000 BTU requirement for when you’re having it work with natural gas and with the help of an AVR, or automatic voltage regulator.

Oil change is a quick undertaking as the component is conveniently located in an easy-access location. The generator puts out 7,000 watts on starting and 5,600 watts while running.

Sensitive electronic devices can run fairly well when you plug them in the Honda Complete Tri Fuel Package. When not in use, the compact shell can be stored inside sheds and garages without any trouble.

The genset is brushless and batteries are included. It’s a great buy as it’s dependable and is ready as soon as it’s out the box. Finally to set your mind at ease, it comes with a 3 Year KOHLER Commercial Warranty.

Motorhead Tri Fuel Generator Package

Motorhead Tri Fuel Generator Package

When price is no factor you’ll definitely want to get the best of all worlds.

The Motorhead Generator Tri Fuel is just that- priced higher but has the bells and whistles that more than make up for the cost. You’re guaranteed a huge burst of power thanks to the 23 HP engine and a host of efficiency improvements over its previous predecessors. You can expect less than 6% harmonic distortion and a reliable battery, no less.

This heavy duty package sports an OHV GX630 engine by Honda and can accommodate hydraulic circuit breakers quite easily. Mobility gets a huge boost in addition to

The 4 oversized wheels; the fuel tank is huge at 13.5 gallons without compromising convenience and portability. The oil valve works great and there are magnetic circuit breakers for total safety and user protection.

You get a wide gamut of extra outlets, with 2 GFCI duplex outlets rated at 20amp, 120V and a 30amp, 120V twistlock outlet. You won’t have to spend extra for wheel kits as it’s included in the package. Moreover, the propane hose kit works well even with sensitive appliances and equipment and can be used for a long, long time.

The wattage is as follows- the Motorhead Package Generator power outputs an amazing 20,000 watts for starting and 12,000 watts while running. You can use a 50amp manual switch without any issues and the quick-disconnect feature comes handy in certain scenarios. Thanks to the massive power it packs, you are guaranteed of running sensitive electronics like your computer, central unit Ac and much more. And yes it uses natural gas, Gasoline and propane as fuel options.

The Motorhead Generator shines as it puts out immense power while touting one of the quietest operation as compared to other units in the market.

Sportsman 4000W Portable Tri Fuel Generator

One of the best tri fuel generators when it comes to portability means you can take the Sportsman Generator on any sports or outdoor adventure. It’s perfectly balanced on both flexibility and power; the first pull starts the generator and the power output stands at 4,000 starting watts and 3,500 running watts.

Power isn’t a compromise as The Sportsman 4000W touts a 212cc OHV engine. What’s more, you won’t be hungry for extra outlets as the tri fuel generator has 4 120V, 1 120V RV, 1 120V and a 12V DC outlet. The 7 HP isn’t the most powerful but the sacrifice in power makes up for added convenience, usage and functionality.

The heavy duty tri fuel functionality is coupled with the ability to start the generator either with electronic or recoil methods. Bring it on the next hiking, camping or mountaineering for your electric necessities. It fits most RVs well in addition to the standard camping gear.

What’s great about the Sportsman 4000W Tri Fuel Generator is that it’s usable out the box and can be wired through a motorcycle battery in a pinch. It has passed California’s CARB testing and it’s EPA approved as well. The 96 lbs. generator turns out adequate electricity without being too noisy or too bulky.

The Sportsman 4000W Tri-Fuel unit lasts an impressive 10 hours in one go. You get a full tank at 3.6 gallons and the tri fuel generator runs great even when you load it with a propane tank at half-full and for emergency purposes. Finally, just like any other tri fuel generator, the Sportsman 4000W generator utilizes natural gas and propane.

Clean burning is done via an electric start and the rated noise at 80 decibels is very acceptable even when out in the great outdoors.

WINCO 9,000 Watts Tri Fuel Pro Generator

The WINCO Tri Fuel Generator Pro is one of the best tri-fuel generators for those who want a reasonably-priced unit for emergencies. For the price, you get a 5% harmonic distortion, a fuel capacity at 4.5 gallons and power output of 9,000 watts for surge and 8,000 watts for rated.

Durability is uncompromised, thanks to the tubular steel cradle shell with wraparound construction. A Briggs & Stratton engine generates power at a rate of 77 decibels. When fed with liquified petroleum, the power output rating stands at 7,200 for surge and 8,100 watts for rated.

The tri-fuel generator works great in areas where there are frequent electricity outages. The generator has an approximate run time of 3.5 hours at full tank and when the regulator is at low pressure. You get 5 outlets total- a 120/240 volt w/ circuit breaker safety feature and 4 20amp 120V socket. You can use your sensitive electronics with this generator.

The WINCO Tri Fuel generator unit is held in place by rubber isolation mounts as it works with either natural, propane or gasoline sources. The windings are copper and brushless for an extended lifespan, which adds to the overall dependability of the generator. Buyers are also protected, thanks to the 2 years limited year warranty.

Honda GX390 – 12,000 Watt Portable Generator

When you need a tri-fuel generator for commercial use, then the Honda Commercial Package will not disappoint. The whole unit runs approximately at 11.7 HP and can power delicate electronics and sensitive equipment up to the last drop.

The Honda Commercial Generator unit comes in a dependable GX390 Honda OHV coupled with starters for both electric and recoil. The industrial-strength  frame is rated as heavy duty and features a zero gravity design. The tank holds 8 gallons of fuel and can run continuously for 12 hours. You also get a 10-ft. propane hose kit and a Mecca Altefor more running options.

The Honda Commercial unit power output starts at 15,000 starting watts and 8,400 running watts . You get a 30amp 120/240 volt outlet and 4 20amp 120 volt outlets. It also has low oil protection which allows for the generator to shut down when low oil level is defected to avoid any casualties.

The Drainzit offers a low noise decibel rating of 75 while having the generator operate at 6,720 running watts and 12,000 starting watts on natural gas. Without a doubt, the Honda Gx390 will make for the perfect backup generator at the right price.


Are these Natural Gas Portable Generators?

Yes, most of the generators mentioned on our list use three fuel types (Natural Gas, Propane & Diesel). However, these types of generators have slowly been replaced by dual fuel generator types on the market as they are more efficient and safe for use. We also recommend the later type of generator for users that want to pick up a new unit from the market.

If you have any problem picking up the ideal model for your needs, you can always use the contact page and we will get back to you.

Can I convert a Dual Fuel into a Tri Fuel Unit?

Yes, you can but wait first. There are many conversion kits online that can help you safely convert your generator.

However, if you don’t understand the dynamics of mechanical parts, it might come as rocket science. In that case, you will need a handyman for the conversion. Below we recommend a fitting tri-fuel conversion kit for all kind of models.


As mentioned, tri fuel generators tend to be hard to find and are often out of stock. However, the Sportsman 4000 Watt Portable Tri Fuel Generator is currently in stock and available.

Alternatively, we recommend the following dual fuel generators:

  1. DuroMax XP13000HX
  2. Durostar DS10000E
  3. Westinghouse WGen9500DF
  4. Champion 100573 4000W

Before selecting the best Tri fuel generator, it helps to determine how you’ll be using the generator and what devices or appliances you’ll be powering up with it.

Regardless, all of the options above will be sure to give you the electricity you need during times of emergencies or when the grid goes offline. What’s more, you get peace of mind knowing that the generator can be relied upon to work when needed. Still haven’t found the product you are looking for? We have some high-end generators on our homepage.

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