3 Best Tri Fuel Generators

Tri fuel generators are multi fuel generators that utilize 3 different fuel sources (Gasoline, propane, or natural gas) to produce electricity.

The reason for generating electricity using multiple sources becomes useful when one type of fuel source may not be available during an emergency, power outage, severe snow, etc.

This article will cover the best tri fuel portable generators, the fuel types for these generators, which is best for each situation, wattage demands, and conversion options from other generator fuel types.

Top 3 Best Tri Fuel Generators

Champion 8000 Watt Tri Fuel Generator

Champion Power Equipment 100416 10,000/8,000-Watt TRI Fuel Portable Natural Gas Generator, NG/LPG Hose Kits and CO Shield

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The Champion Tri Fuel Generator tops our list of best tri fuel generators for good reason. This generator is the most powerful, versatile and has the best features and safety measures.

Because the Champion 8000 Watt generator has the ability to power most household appliances, it can be used as a tri fuel whole house generator for most medium sized homes.

If you’re looking for a home backup, you want to make sure you choose a generator with enough wattage to match your home size.


  • 10,000 Starting watts, 8,000 Running watts


  • Gasoline: 12.5 hour run time at 50% load
  • Propane: 5 hour run time at 50% load


  • Powerful 439cc OHV 4 Stroke Engine
  • Power Panel Outlets-120V 30A RV Locking Outlet (L5-30R), 120/240V 30A RV Locking Outlet (L14-30R), (2) Two GFCI 120V 20A Household Outlets (5-20R)
  • Easy electric start up


  • 8.5 gallon tank
  • Runs on natural gas, liquid propane or unleaded gasoline


  • Dimensions (inches): 27.6″ x 28.2″ x 26″
  • Weight: 207 lbs
  • Wheel kit included


  • 74 dB


  • CO Shield Carbon Monoxide protection-Automatic shutoff before CO levels become dangerous
  • 3 Year limited warranty, free lifetime tech support
  • EPA approved, CARB Compliant

Champion 8000 Watt generator PROS

  • Versatile: At 8,000 running watts, its powerful enough to be a home standby generator and has the portability to be taken for outdoor usage
  • Safety: CO shield is a potentially life saving technology to help protect you and your family


Champion 8000 Watt generator CONS

  • Noisy: You may want to consider an insulated enclosure for this generator to help quiet this generator. Or, use extension cord away your peace or conversations.
  • Heavy: Although is comes with a portable wheel kit and handle for portability, its still 207 lbs
  • Expensive: These great features and versatility come at a cost higher than the other tri fuel generators
Champion Power Equipment 100416 10,000/8,000-Watt TRI Fuel Portable Natural Gas Generator, NG/LPG Hose Kits and CO Shield

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Champion 800 Watt Generator Features

Sportsman 4000 Watt Tri Fuel Generator

The Sportsman 4000 Tri Fuel Generator is a versatile tri fuel generator option. It’s perfectly balanced on flexibility, portability and power.


  • 4000 Starting watts, 3,500 Running watts


  • Gasoline: 10 hour run time with full tank
  • Propane: 12 hour run time with full tank


  • Moderately powerful 7 HP 420 cc OHV 4 Stroke Engine
  • Four 120V, one 120V RV, 1 120/240V, and a 12V DC outlets
  • Easy electric start up


  • 3.6 gallon tank
  • Runs on natural gas, liquid propane or unleaded gasoline


  • Dimensions (inches): 24.50x 18.75x 19.50
  • Weight: 90 lbs


  • 68 dB


  • Low oil shutdown
  • Automatic voltage regulator
  • EPA approved
  • Non-CARB Compliant

Sportsman 4000 Tri Fuel Generator PROS

  • Versatile: Can charge sensitive devices such as TVs, computers and tablets and also work for outdoor activities like camping
  • Affordable-Less expensive than other tri fuel generator options
  • Less Noisy than other tri fuel generators

Sportsman 4000 Tri Fuel Generator CONS

  • Moderate Power-At only 4000 Peak watts, not powerful enough to be a true home backup generator
  • Non CARB Compliant
  • WARNING-Not recommended for use at 3,000 feet above sea level or higher

Firman 7500 Tri Fuel Generator

Firman 7500 Watt Tri fuel generator

The Firman 7500 Watt Tri Fuel Generator is another solid option for anyone seeking the versatility of a tri fuel generator.


  • 9400 Starting watts, 7,500 Running watts


  • 12 hour run time at 50% load


  • Multi-Featured control panels with covered outlets
  • Easy electric start up


  • 8 gallon fuel tank
  • Runs on natural gas, liquid propane or unleaded gasoline


  • Dimensions (inches): 27.5x 26x 29.8
  • Weight: 212 lbs
  • 10 inch Wheel kit and grip handles included


  • 72 dB


  • Low oil shutoff
  • 3 year limited warranty on new generators/ 90 day warranty on certified refurbished generators
  • EPA approved
  • CARB Compliant

Firman 7500 Watt Tri Fuel Generator PROS

  • Easy startup– Quick, no hassle electric switch start
  • Versatile-Has enough power to be used as an emergency backup home generators and can also be used for outdoor activities
  • Affordable compared to other generator in its power class
  • Safety– Strong safety features and solid warranty

Firman 7500 Watt Tri Fuel Generator CONS

  • A bit noisy
  • Heavy and bulky

Also Read: Best Portable Generators [2022]

Firman Vs Champion Tri Fuel Generators

The Firman 9400 and Champion 8000 Tri fuel generators are some of the best options available. But, which is better?

SpecificationsFirman 9400 Watt Tri Fuel GeneratorChampion 8000 Watt Tri Fuel Generator
Power (Peak Watts)9,40010,000
PerformanceUp to 12 hours run time at 50% loadUp to 12.5 hours run time at 50% load
SafetyCARB/EPA CompliantCARB/EPA Compliant
Portability212 lbs207 lbs

So, Which Tri Fuel Generator Is Best?

The best tri fuel generator option depends on personal preferences, but let’s dive into which generator is best for each area.


The best performing tri fuel generator is the Champion 8000. This generator has a peak wattage of 10,000, supplying more than enough power to be a backup home generator for small to medium size homes as well as the portability to be used for outdoor activities

Champion Power Equipment 100416 10,000/8,000-Watt TRI Fuel Portable Natural Gas Generator, NG/LPG Hose Kits and CO Shield

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Although the Sportsman 4000 is the least powerful of these three tri fuel generator options… the Sportsman has the lowest price tag.



The Sportsman 4000 is the lightest of the 3 by a wide margin. However, the Champion 8000 is the best option for portability purposes because it includes a wheel kit and easy grip handles to help you take it from point A to point B.



Because of its CO Shield technology, the Champion 8000 is the safest of these options. CO Shield light goes off once a minimum CO level is detected and it automatically shuts off the generator.

This is great for peace of mind. Also, the 3 year limited warranty means your financial investment is also safe.

Champion Power Equipment 100416 10,000/8,000-Watt TRI Fuel Portable Natural Gas Generator, NG/LPG Hose Kits and CO Shield


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The Sportsman 4000 is the quietest of these tri fuel generators at only 68 dB.

However, this is still not super quiet. There are other generators with noise levels in the 50s and even no noise solar generators to consider if noise is a big buying factor for you.

Frequently Asked Questions About Tri Fuel Generators (FAQs)

What Is The Largest Tri Fuel Generator?

The largest tri fuel generator is the Firman 7500 Tri fuel generator with measurements of 27.5x 26.1x 29.9 inches, weighing 212 lbs, with a peak wattage of 9,400.

The Firman 7500 watt generator is also the largest tri fuel portable generator as it comes equipped with a 10 inch wheel kit and grip handle included.

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 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 kind 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.

What Fuel Is Most Efficient For Tri-Fuel Generators?

When it comes to generator fuel, diesel is hands-down the most efficient option. Because of this, you will save money on diesel compared to using alternative fuels.

However, depending on local diesel pricing, diesel can potentially be the most cost-effective fuel in particular situations.

Unfortunately, diesel is usually missing from a tri-fuel generator’s fuel system. Propane, natural gas, and gasoline have all been tested, with gasoline coming out on top.

Propane, on the other hand, is typically less expensive per gallon and you can easily connect your generator to a propane tank.

A few disadvantages of using gasoline include the difficulty of obtaining and storing it, as well as the fact that it burns less cleanly.

When compared to natural gas, propane has a burn efficiency roughly two times greater.

However, natural gas is less expensive per unit than propane, which is the case for both liquid and gaseous fuels. To choose the most affordable option, look into local fuel prices and energy efficiency first.

Keep an eye on fuel prices to see if you can get a better deal in the future.

Regardless of how efficient or affordable it is, natural gas is preferred by many households. A natural gas-powered generator can run endlessly without the need for manual refueling.

For some, the added cost is well worth the added convenience. To avoid personal injury or damage to your underground pipes, have a professional connect your generator’s gas lines.


Do I Really Need A Tri-Fuel Generator?

In many cases, but not all, tri-fuel generators are the best option. Standby generators have various advantages that portable tri-fuel generators do not.

As an example, the power of a portable generator cannot match that of a standby generator (particularly one powered by a tri-fuel). So they aren’t able to run all of your electronics at once.

Owners of tri-fuel generators should be prepared to use a variety of power sources. A tri-fuel generator isn’t necessary if you only ever use gasoline.

Some homeowners choose not to have their generators’ connected to a natural gas line. A single- or dual-powered generator may be less expensive if this is the case.

Those that need a variety of power sources can benefit from tri-fuel generators, which are designed for those who know they will need them.


Can I Hook Up Natural Gas From My House To My Generator?

You can hook up your generator to the natural gas line, however, you can only achieve this if you are either using a tri-fuel generator or converting your generator to natural gas.

The generator will also need to be close to your house, and you will need to have a gas meter outside of your house.

Are Tri Fuel Generators Safe?

Because tri fuel generators are able to run on propane or natural gas in addition to gasoline, tri fuel generators have the ability to burn much cleaner than conventional gas powered generators. This is safer for the environment, the user and the generator as well.

Tri Fuel Conversion Kits

Can I Convert A Dual-Fuel Into A Tri-Fuel Unit?

Yes, you can convert a dual fuel generator into a tri fuel generator. If you already own a dual-fuel generator, converting it to a tri-fuel generator will not require any major modifications.

You simply add an additional fuel tank and change over the wiring connections so that all of them connect together. If you decide to go DIY, there are many conversion kits and tri fuel kit online that can help you safely convert your generator.

However, if you don’t understand the dynamics of the mechanical parts you will need a handyman for help with the conversion. Below we recommend the best tri fuel conversion kits for some popular generator models.

Tri Fuel Conversion Kit for Honda Generators

Grenergy - EU2200i Propane, Natural Gas & Gasoline Tri Fuel Conversion Kit for Honda Generator Inverter LPG CNG

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Tri Fuel Conversion Kit for Predator 3500 Inverter Generator

ALLMOST Carburetor Carb Assy. Compatible with Predator 3500 Watts Inverter Generator 63584

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Tri Fuel Conversion Kit for Champion Generators

Tri Fuel Conversion Kit for WEN 56380i Inverter Generator

Tri Fuel Conversion Kit for Generac Generators

Wattage Demands of Tri Fuel Generators

ApplianceStarting WattsRunning Watts
Furnace (1/4 HP)1000600
Sump Pump (1/3 HP)1300800
Washing Machine22501150
Window AC 13K BTU28001800
Well Pump21001000

Also Read: Power Generator Rules and Laws

Top 3 Tri Fuel Generators

I hope you now have a better understanding of the top rated tri fuel generators available. The best choice depends on personal preferences.

When comparing all important factors, We believe the Champion 8000 Watt generator is the best overall tri fuel generator option available given its versatility, performance, and safety features.

But which option is best for you? You’ve completed reading all of our tri fuel generator reviews. Which one do you believe is best?

Champion Power Equipment 100416 10,000/8,000-Watt TRI Fuel Portable Natural Gas Generator, NG/LPG Hose Kits and CO Shield

Check Latest Price

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Last update on 2022-05-10 / Affiliate links / Images from Amazon Product Advertising API