Dual fuel generators are generators that can run on two different fuel types. To be precise, dual fuel generators use either gasoline or propane as primary fuel sources to generate electrical power.
Though gasoline is the easiest fuel type to obtain since it is very common, it has some disadvantages. Gasoline can be difficult to store—it is subject to price swings and makes generators produce more exhaust fumes.
Propane, on the other hand, burns cleanly, is less expensive, and helps to reduce the amount of noise a generator produces.
Despite the differences between the two fuel types, having both alternatives will enable you to maximize run time and storage freedom. It will also help you reduce operational costs.
However, finding the best dual fuel generator that’s suitable for your needs may be a bit stressful. Luckily, we have put together an updated list of the current best dual fuel generators for you in this article.
Below is a table of the best dual fuel generator on the market.

S/NOur wordsProduct Link
1. Best overall generatorWestinghouse WGen7500DF Dual Fuel Portable Generator
2. Best dual fuel generator for RVDuroMax XP12000EH Generator
3.Best electric start dual fuel generatorWestinghouse WGen3600DF
4.Best value dual fuel generatorWEN DF475T Dual Fuel 120V/240V Portable Generator
5.Best heavy-dutyWestinghouse WGen9500DF Dual Fuel Portable Generator 
6.Best for camping Champion 100165 9375/7500-Watt Dual Fuel Portable Generator

Things To Look Out For When You Are Buying Your Dual Fuel Generator 

While shopping for a dual fuel generator, you must carefully study its properties and consider a few essential features. You have to compare the importance of these properties and features concerning how you intend to use the generator.
A generator may come with certain features that won’t be useful in your case. For this reason, you need to get yourself familiar with all of these features and properties so you can make the right purchasing decision when you are ready.
Knowing the features will help you know the things you need more from your dual fuel generator. I will highlight some of these features below.


Fuel Capacity

Different generators feature different fuel tanks for storing gasoline. Since every generator’s fuel tank has a unique capacity, the amount of gasoline each tank can hold differs.
To give you a deeper insight, a generator’s fuel capacity is usually measured in gallons. It can range from 2 gallons to 10 gallons or be larger.
You have a lot to benefit from having a large fuel tank capacity. First of all, you won’t need to constantly refill your fuel tank if you have a large capacity tank.
Also, the larger a generator’s fuel tank is, the longer it will be able to produce gasoline-based power.
You should note that the capacity of your fuel tank doesn’t determine how much propane you can use to power your generator. This is because propane gas is usually kept in tanks connected to the generator for direct fuel consumption.


Power Output

Dual fuel generators’ power output is usually rated in Watts. These ratings are usually divided into two terms: peak power output and running power output.
The rated output power is basically the general power output the generator can continuously produce during usage. Meanwhile, the peak output is the maximum output the generator can produce at a certain time.
Note that the higher the wattage a generator has, the more power the generator will be capable of. of producing. As for dual-fuel generators, the gasoline option always produces more power than the propane option.

Noise Level

Though you cannot eliminate a generator’s noise, you can always buy one that doesn’t produce too much noise. Operating noise levels are usually measured in decibels (dB).
When you want to buy your dual fuel generator, try to buy one with a noise level that doesn’t exceed 65 – 75 dB.


Start-up Options

You can start your dual fuel generator with either an electric start switch or a recoil cord.
Generally, it’s easier to start a generator using an electric start ignition. However, it requires stored electricity in the generator. If there’s no charged internal battery, you won’t be able to use the electric starter.
On the other hand, the recoil starter is a reliable but old technology. It requires you to pull the recoil cord to start the engine. While it may be stressful, you won’t have to rely on electricity to make it work.


CARB Compliance

Buying a CARB-compliant generator will help to reduce air pollution. It will be particularly essential in keeping CO2 and other harmful emissions at bay. It also ensures that your generator will run as efficiently as possible.

Specs And Comparisons

Generator

Wattage

Noise Level

Weight/Runtime

Dimension

Gasoline 

Starting 9500W


Running 7500W 

Propane 

Starting 8550W 


Running 6750W

72 dB

201 lb


Gasoline

11 hours at 50% load. 


Propane 

8 hours at 50% load.

27.2 x 26.1 x 26 inches

Gasoline

Starting 12000W 

Running 9500W 


Propane 

Starting 9025W

Running 11400W

74 dB

224 lb


Gasoline

8 hours at 50% load. 


Propane 

7 hours at 50% load

29 x 30 x 26 inches

Gasoline 

Starting 4650W 

Running 3600W


Propane 

Starting 4650W 

Running 3240W

68 dB 

120 lb


Gasoline

10.5 hours at  50% load. 


Propane 

14 hours at 50% load.

23.3 x 22.8 x 21.3 inches

Gasoline 

Starting 4750W

Running 3800W









Propane 

Starting 4350W

Running 3500W


75 dB

105.8 lb

11 hours at 50% load.

23.2 x 17.5 x 18.5 inches

Gasoline 

Starting 12500WRunning 9500W



















Propane

Starting 11200W 

Running 8500W

74 dB

211 lb


Gasoline

8 hours at 50% load. 


Propane 

7 hours at 50% load

27.2 x 26.1 x 26.5 inches

Champion Power Equipment 

100165 9375/7500-Wat t Dual Fuel

Gasoline


Starting 9375W

Running 7500W 


Propane

Starting 8400W

Running 6750W

74 dB

205 lb


8 hours at 50% load. 


Propane 

5.5 hours at 50% load.

28.9 x 27.7 x 26.1 inches

Westinghouse WGen7500DF Dual Fuel Portable Generator 

The Westinghouse WGen7500DF is our best dual fuel generator because it outshines every other generator on the list.
It is superior to every other one in terms of efficiency, reliability, ease of use, and sales price.


Features

This generator can produce running watts of 7500W and starting watts of 9500W when running on gasoline.
When running on propane, it can produce running watts of 6750 watts and 8550W starting watts.
These wattages will be more than enough to simultaneously power most of your home appliances like the refrigerator, air conditioner, microwave, and more.
Aside from its impressive power output, this generator also offers a long runtime. This is partly thanks to its 6.6-gallon fuel tank.
The Westinghouse WGen7500DF can supply power to your home for up to 11 hours if running on gasoline.
Meanwhile, if you power the generator with a 20-pound propane tank, you will get just 8 hours of runtime.
The runtime may not be as long as smaller Westinghouse budget generators, but you get double the power output so that you can power much more.
Starting this generator is also incredibly easy. It has a remote key fob with which you can start its engine from over 100 yards away.
Furthermore, the Westinghouse WGen7500DF Dual Fuel Portable Generator is durable. It comes with a high-quality 420cc 4-stroke OHV air-cooled Westinghouse engine.
Overall, this generator is well equipped for its price point. It also doesn’t need a high frequently maintained units. What makes it better is that, despite having a large engine, the Westinghouse WGen7500DF operates at just 72 dB.
However, the Westinghouse WGen7500DF is quite heavy. It has a total weight of 201 pounds and measures 27.2 x 26.1 x 26 inches.
In terms of outlets, the Westinghouse WGen7500DF comes with two GFCI 120-volt standard household outlets and one 120-volt transfer switch outlet.
Ultimately, this is an efficient generator with a good amount of power. In addition, it offers a long run time.

PROS 

  1. Plenty of power to offer 
  2. A simple fuel switch knob
  3. An electric start push button
  4. A remote start
  5. Decent runtime 
  6. This generator offers a long runtime 
  7. High quality and durable design 

CONS 

  1. It is quite heavy 
  2. Noise level is high
  3. No RV outlet

DuroMax XP12000EH Generator 

The DuroMax XP12000EH is a premium heavy-duty generator. It is capable of offering top-notch efficiency and powerful performance. This is mainly thanks to the powerful engine that DuroMax equips it with.

Features
To give more details, the DuroMax XP12000EH is powered by a 458CC OHV 4-stroke Duromax engine.
Its engine can run on either gasoline or propane. The generator still produces nearly the same amount of power regardless of your fuel type.
When running on gasoline, this generator is capable of providing 9500W of running power and 12000W of starting power.
Meanwhile, you get a slightly lower output when you power the generator with propane. You get 9025W of running power and 11400W of starting power.
With the immense power the DuroMax XP12000EH generates, you would expect it to be very noisy. Though it is slightly noisy, its noise level is fair enough. It runs at a 72 dB noise level.
You can start this generator with either an electric ignition or a backup recoil cord.
During its operation, the DuroMax XP12000EH uses a low-oil shut-off feature to ensure safe operation. It shuts down automatically when its oil begins to run low.
As for regular runtime, the DuroMax XP12000EH can last you for 8 hours. This runtime may not be sufficient for you, but the amount of power you get from the generator during its runtime is a little consolation.
Moreover, this generator has an excellent array of outlets. This generator has one 120V/240V 50A heavy-duty outlet and one 120V/240V 30A twist-lock outlet.
It also has one 120V 30A twist-lock outlet and two regular 120V 20A household outlets.
In terms of its build, the DuroMax XP12000EH is a 224-pound generator that measures 29 x 30 x 26 inches.
It is caged in a steel frame that has been equipped with two heavy-duty wheels to aid easy transportation.
Overall, the DuroMax XP12000EH is the ideal choice if you need a powerful generator with multiple options.

PROS 

  1. Remarkable power output 
  2. This generator has a low-oil shut-off safety feature 
  3. Current overload protection and oil level alert
  4. RV Ready
  5. Fuel Gauge
  6. Electric Start

CONS 

  1. Too heavy for easy mobility
  2. Noisy operation
  3. No remote start

Westinghouse WGen3600DF 

The Westinghouse WGen3600DF generator is the ultimate budget option on this list of the best dual fuel generator.
Despite its affordable price, this generator is reliable enough to keep most of your home appliances running.


Features
It can provide running power of 3600 Watts and 4650 Watts of starting power when running on gasoline.
If you power the generator with propane, you will get 3240 running watts and 4650 starting watts.
Though its engine isn’t as powerful as the DuroMax XP12000EH’s engine, it is still powerful enough to get most of the job done.
Another good thing is that this generator has a long runtime. The Westinghouse WGen3600DF can last for 14 hours.
In addition, it is very easy to start this generator since it comes with a wireless remote start, along with a push-button start and a recoil start for backup.
Overall, this generator is very user-friendly. It comes with color-coded buttons and a visible fuel selector switch that will make it easy for you to operate the generator.
Speaking of fuels, you will like the fact that this generator has an option that allows you to switch from gas to propane even when the unit is operating.
Another thing that’s worth mentioning is that this generator is relatively quiet during its operation. It has a noise rating of 68 dB, which is just slightly higher than the normal 60 dB conversation level noise.
In case you are wondering, the Westinghouse is CARB-compliant and EPA approved. Westinghouse also assures a three-year warranty and lifetime technical support for the generator.
At 120 pounds, it is one of the most portable dual-fuel generators. In addition, its outlet options, such as the DC and twist-lock outlets, make it a suitable option for a trailer or RV.
However, it would help if you kept in mind that it doesn’t offer plenty of power, but it still offers the convenience a standard dual fuel generator offers.

PROS 

  1. Swift fuel change switch 
  2. This generator is user-friendly
  3. Electric, remote, and recoil start
  4. A longer operating time
  5. RV ready 

CONS 

  1. An average power output 

WEN DF475T Dual Fuel 120V/240V Portable Generator

The WEN DF475T generator offers slightly higher power than the Westinghouse WGen3600DF generator. However, its runtime is slightly less than the Westinghouse WGen3600DF’s runtime.


Features
With a full gasoline tank, the WEN DF475T generator can operate for up to 11 hours with a noise level of about 75 dB.
During its runtime with gasoline as the fuel source, the WEN DF475T generator produces 300 running watts and 4750 starting watts.
On propane, the generator’s running watts drop to 3500 W, and its starting watts also decrease to about 4350 W.
Some of the outlets on this generator include two 120-volt standard household outlets, one 120/240-volt twist-lock outlet, and a 12-volt DC port.
In terms of the build of the WEN DF475T generator, it is quite light and compact, but it doesn’t have a fragile build. The WEN DF475T measures 23.2 x 17.5 x 18.5 inches and weighs 105.8 pounds.
Built aside, the WEN DF475T is a very versatile generator. Since it is transfer switch ready, you can plug it up to your power line to save you from the stress of always having to set up the connection during a power outage.
However, note that you still need to start the generator yourself electrically via its remote key start option.
In conclusion, the WEN DF475T generator is a good dual-fuel generator.

PROS 

  1. Simple fuel switch knob
  2. Offers a decent runtime 
  3. Electric start 
  4. Transfer switch ready

CONS

  1. Weird oil drain plug positioning
  2. Loud operation
  3. No remote start

Westinghouse Outdoor Power Equipment WGen9500DF Dual Fuel Portable Generator

The WGen9500DF is another heavy-duty generator on this list. It is powered by a 457CC 4-stroke engine.


Features
This generator can provide 9500W of running power and a starting power of 12500W when run on gasoline. You also get very good output on propane.
When running on propane, the WGen9500DF can supply 8500W of running power and 11200W of starting power.
This generator can run for 12 hours on a single fuel tank. Its long runtime makes it a good fit for overnight activities or camping in RVs.
The sad thing, however, is that the generator is very heavy. It weighs 211 pounds and measures 27.2 x 26.1 x 26.5 inches.
Due to its heavy weight, you might have difficulty transporting it. Fortunately, it comes with wheels to aid transportation.
You can easily pull the generator across the floor, but the problem will arise when you want to lift it.
If it is any consolation, this generator has a very rigid build. Its frames are very durable and offer good protection for the generator’s engine.
In terms of the outlets on this generator, it features a good selection. On this generator, you get 2 GFCI 120V 5-20R outlets and one transfer switch-ready 120V/240V L14-30R outlet.
You also get one RV-ready 120V/240V 14-50A Outlet and a 12V battery charging port. For guarantee, Westinghouse offers a 3-year warranty for the WGen9500DF.

PROS 

  1. It offers a very high power capacity
  2. Electric push start button
  3. Swift fuel switch button
  4. Overload protection
  5. Its outlets have rubber coating protection 
  6. Remote start

CONS 

  1. A bit heavy
  2. Loud operation

Champion Power Equipment 100165 9375/7500-Watt Dual Fuel 

Due to its 68 dB noise level, the Champion Power Equipment is an ideal option for quiet campgrounds or neighborhoods. Besides, it is quite compact and light for a dual fuel generator, so you won’t have issues with moving it around.
Features
To give you more details, this Champion Power Equipment generator measures 28.9 x 27.7 x 26.1 inches and weighs 205 pounds.
The only thing that could be a limiting factor is the power output this generator is capable of producing.
It may not be powerful enough to run many heavy electrical appliances simultaneously.
Nonetheless, it is powerful enough to run most of your basic appliances and a few heavy ones.
With gasoline as its fuel source, the Champion Power Equipment can produce starting watts of 9375W and running watts of 7500W. When running on propane, its power output decreases a little.
It produces a starting watt of 8400W and a running watt of 6750W.
Even though it doesn’t offer a longer runtime, one thing you will like about the generator is its high power output.
When running on gasoline, the Champion Power Equipment can run for 8 hours on half load. Meanwhile, it will last for 5.5 hours while running on propane.
In terms of outlets, you get one 120/240 30A locking (L14-30R), one 120V 30A locking (L5-30R), and two 120V 20A household outlets (5-20R).
Overall, this generator is a good option if you are looking for a less expensive alternative power source.

PROS 

  1. The Champion Power Equipment has an affordable sales price
  2. High output power
  3. Multiple outlets including GFCI
  4. Datacenter
  5. Smart fuel switch dial
  6. Electric start option

CONS 

  1. High noise level
  2. Low runtime on propane at half load
  3. No remote start

How The Review And Selection Process Was Done

The best dual fuel generators should be able to provide reliable backup power to a home with either gasoline or propane as fuel options. They help to ensure that your home stays powered and keeps running during a power outage.
To start with, we only considered generators from established generator brands that have built their reputation for delivering reliable units.
When we were compiling our list of recommendations for the best dual fuel generators, we made sure to pay close attention to several features.
These features included fuel efficiency, tank capacity, noise level, and power output. While we considered these features, we also considered a range of options that will invariably suit some specific situations.
We included options such as heavy-duty generators for high-power demand and more portable and compact units for outdoor use such as camping and RV trips.
Lastly, we considered light-duty generators for menial power supply activities for situations like sudden power outages and emergencies.
The generators we picked include some safety and convenience features that make them stand out amongst others.
Most of the generators on the list are not very noisy. These generators have a noise output rating that lies between 65 and 75 dB.
In addition, since dual fuel generators are often heavy, we considered options that include built-in wheels and lift bars to make transporting them easier.
We also prioritized generators with special features such as versatile start options, built-in voltmeters, and automatic shutdown features.
For their performance, we recorded how efficiently they can be as backup power sources with and without transfer switches.
We also checked how well they run and provide steady power under higher loads. One of these scenarios includes how reliable they can be for running power tools and equipment.
Finally, we recorded how much noise each generator produces during operation. We checked their noise levels when they were running under intensive and less intensive loads.