How Do Dual Fuel Generators Work Shown and Explained

We dwell in an energetic universe. You need the power to perform almost anything, from cooking to connecting with friends and family. While you can normally rely on service providers and power grids for your energy, you may find yourself in a situation where you are unable to power your equipment. You may be camping, working on-site, coping with a power outage, or experiencing poor weather.

That’s where a portable generator comes in, giving you peace of mind that you’ll always have electricity wherever you go. When selecting the proper sort of generator, you should consider whether you want a leisure, household, or construction generator. You have a lot of alternatives and aspects to think about, and dual fuel generators might be a fantastic fit for your needs.

However, understanding how it works may be immensely beneficial in understanding what you can expect from it and how to properly maintain it. In this article, I have given all the details about dual-fuel power generators and the benefits of dual-fuel generators. Let’s have a look!

What Is a Power Generator?

Portable power generators generate electricity by transforming mechanical and kinetic energy into electrical energy. The specific mechanics vary significantly from generator to generator depending on considerations such as size, but they all contain copper coils encircling an electromagnet. Spinning the electromagnet causes an electrical current to flow through the coils, resulting in a huge current.

Generators require fuel to begin their kinetic activity, which is often gasoline, propane, or diesel fuel. An internal combustion engine, an alternator, a fuel tank, a starter, and outlet plugs are the primary components of any generator. You’re not alone if you’re asking, What size generator do I need?

What Is a Power Generator

Understanding Dual Fuel Generators

As previously stated, portable power generators require some kind of fuel to start the kinetic movement that generates energy. Although gasoline is the most commonly used fuel in portable generators, gas generators fueled by propane or diesel fuel are not uncommon.

Dual fuel generators are those that can run on two distinct types of fuel. This allows you the freedom and flexibility to use either gasoline or liquid propane to power your generator. With a simple turn of a knob, you may switch between the two fuel sources.

Propane or Gas?

Propane and gas each have their own set of pros and downsides. While a single fuel gas or propane generator has nothing inherently wrong with it, a dual fuel generator allows you to employ both fuel types depending on the scenario. You get the best of both worlds.

How Do Dual Fuel Generators Work?

Most dual-fuel generators available today include a switch that allows them to easily convert between two fuel sources. It should be noted that a dual-fuel generator can run on only one type of fuel. It helps because when one fuel type runs out, you may switch to another before the generator shuts down.

When your electricity goes off, certain dual-fuel generators will start immediately. Dual-fuel generators are popular because they are versatile. Because there is an alternate fuel source, there will be no power outages.

It always has many settings that are useful when you require a power supply. In most circumstances, you may also select the type of gasoline to combine. Different types of generators operate in their own unique way. You will also need to know the generator’s capacity to determine whether it meets your requirements.


  • First, read the user handbook to learn how your dual generator works.
  • Because gasoline is combustible, it must be stored properly.
  • Check your model eventually (at least the gasoline lines and pipes) to ensure no fuel is spilling.

How Do Dual Fuel Generators Work

Benefits Of Dual Fuel Generator

Eliminate The Need To Store Expensive Fuel

Dual fuel generators avoid the need to store an unnecessary amount of costly fuel. There is no need to stockpile significant amounts of diesel because the generating set can run on natural gas thanks to dual fuel generators. Furthermore, if the natural gas is depleted, it may continue to operate only on diesel.

They Are An Eco-Friendly Alternative

Dual fuel generators are a more environmentally friendly option than conventional generating sets. The fuel combination, together with the extremely efficient engine, results in lower carbon emissions to the environment. Furthermore, because natural gas burns cleaner than diesel, a natural gas-diesel blend produces fewer emissions than diesel-only generators.

Availability of Fuel

The main advantage of dual-fuel generators is that you have a second fuel alternative when one fuel type runs out. In addition, if you find yourself in a situation where a specific fuel type is not accessible, the second alternative may be available. In most isolated locations, gasoline and diesel are always accessible.

Availability of Fuel

Useful For Emergencies

When there is a natural catastrophe and the power supply is disrupted, dual-fuel generators come in useful. When there is a natural catastrophe, you will not be able to use propane or natural gas, but you will be able to use the other fuel kinds.

Switch Fuel Function

You may also choose the sort of fuel to use based on the weather. For example, you can store propane and then use it up during the winter. In the winter, you can’t store propane since the tank won’t have an adequate vapor pressure. In the winter, propane is thick, but in the summer, it expands.

More Options

There are several fuel possibilities available depending on the sort of dual-fuel generating set you choose. The type of generator you choose should be determined by the proximity of gasoline stations to your home. E85 compliant engines employ an ethanol-to-gas combination in the proportion of 85 to 15%.

Can A Dual Fuel Generator Run On Natural Gas?

Although some generators are designed to run solely on natural gas, many are capable of running on natural gas, propane, or even diesel and gasoline. These are referred to as dual-fuel or tri-fuel generators.

What fuel types are usually used?

Dual-fuel generators run on two types of fuel. Knowing each of these properties will assist you in determining which combination is appropriate for a dual-fuel generator.

What fuel types are usually used


The vast majority of dual-fuel generators are powered by gasoline. It is one of the most cost-effective options and is quite useful in an emergency. The only disadvantage of gasoline dual-fuel generators is their short shelf life and difficulty in storage.


The second most common fuel type is propane, which has a longer shelf life than gasoline. It is less difficult to store than gasoline. They are simple to use and will not hurt your generator.

Natural Gas

Even though distinguishing between gasoline and natural gas might be challenging, there is one. Gasoline is a liquid, whereas natural gas is air. Natural gas cannot be stored, despite being the cheapest of all fuel types. A dual-fuel generator driven by natural gas cannot be transported. They’re ideal for backup generators connected to the public gas supply.


Diesel is the best fuel option for your generator. It is the best since it may be used for an extended period of time. It is the more expensive option, and it is also difficult to find a dual-fuel generator that operates on diesel. It is more common with tri-fuel generators.

Are dual fuel generators any good?

These are useful for a variety of applications since they emit fewer hazardous pollutants than diesel-only ones. In comparison to standard units, the finest dual fuel generator may be a more cost-effective and environmentally friendly source of electricity.

Are dual fuel generators any good

How long will a dual fuel generator run on propane?

Champion’s 3500-watt RV Ready generator’s 224cc engine is Dual Fuel, allowing it to run on either gas or propane. This device comes with a propane hose and can run for approximately 10 hours on gasoline or 10.5 hours on propane. Volt GuardTM and Cold Start Technology are included.

Why Buy a Dual Fuel Generator?

The capacity to employ two distinct fuel sources is the primary benefit of a dual fuel generator. This provides peace of mind as well as an additional choice in how you utilize your generator.


When coping with a power outage or natural disaster, you may not always have enough of a single fuel to keep your generator running. You have additional alternatives with a dual fuel generator, ensuring that you are prepared even if you haven’t been hoarding gas or propane.

This is especially crucial in locations that frequently encounter adverse weather. Natural catastrophes can cause roadblocks and make it difficult to reach fuel supplies. You might not be able to drive to the petrol station around the corner.

Longer Runtime

Because of the versatility of two distinct fuel sources, you can keep the generator operating for extended periods of time. When your gas runs out, just switch to propane to keep your power on, or vice versa.

Peace of Mind

Even though you regularly use your generator with only one fuel type, a dual fuel generator provides you with peace of mind. For example, you can use propane as your primary fuel, but if you run out, you may convert to gas. You almost always have a backup alternative to keep your electricity going.

Read It: Best Propane Generators

How Do Dual Fuel Generators Work – FAQs

Is it worth having a dual fuel generator?
A dual fuel generator provides the assurance that you will have electricity no matter what happens outside. Natural calamities such as hurricanes and earthquakes can cause gasoline supplies to be disrupted. If you rely on that one form of fuel, you may be limited to what you have at home.
Is dual fuel generator better than gas?
If you reside in a region where storms are expected, I recommend investing in a dual-fuel generator. When fuel is scarce, you’ll want the choice of using either gas or propane to generate electricity. Propane will endure permanently (it will not expire or go bad), but gasoline will only last approximately a year (with fuel stabilizers).
How long will a 20lb propane tank run a generator?
Generators typically consume two to three pounds of propane each hour. As a result, a generator can run for five hours on 20 pounds of propane.
How long do dual fuel generators last?
It has an operating power of 9,500 watts and a peak output of 12,000 watts on gasoline and 8,550 and 10,800 watts on propane. It can operate continuously for up to 12 hours on a full 8-gallon tank of fuel.
Is it cheaper to run a generator on propane or gas?
Gasoline generators are often far less expensive to buy and install. Gas generators also produce more heat than propane generators, roughly 30% more for the same quantity of fuel. Unless you reside in a region where propane is significantly cheaper than gasoline, a gas generator is usually less expensive to operate.


To Sum Up

The Champion 3400 dual generator is a good option if you want to buy a multi-fuel generator. Your fuel options will determine whether you want a gasoline or diesel-powered generator. Dual-fuel generators are one of the best options when it comes to generators.

To learn how a dual-fuel generator works, see the owner’s manual for the model you’re utilizing. The manufacturer will usually offer detailed instructions on how to use your dual-fuel generator, as well as any other relevant information.

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