7 Best Dual Fuel Generators of 2024: Decent Runtime & Capacity

The dual-fuel generator is not only excellent for extended blackouts but also for camping because you will always have option “B” to attach a large propane tank when you run out of gasoline.

After testing 17 dual-fuel generators, we have come up with the top 7 best dual-fuel generators that can power anything with a longer runtime and decent portability. Additionally, we have listed those units that are lighter or have at least a mobility kit to roam around easily.

What Is a Dual Fuel Generator? — Brief Overview

Dual-fuel generators run on two different fuels, typically propane and gasoline. When a dual-fuel generator runs out of gasoline, the owner always has option “B” to connect a huge tank of propane for uninterrupted running. 


Editor’s Pick

Champion 4500
  • 4500 surge watts
  • 3500 Running Watts
  • 12– 13.5 hours of runtime at 25% load.
  • Dual fuel
tOP Pick

Westinghouse WGen9500DF
  • 12,500 surge Watts
  • 9,500 Running Watts
  • Dual fuel
  • 11– 12 hours of runtime at 40 – 50% load.

  • 4750 surge Watts
  • 3800 Running Watts
  • Dual fuel
  • 10.3 hours of runtime at 50% load.

List of The Best Dual Fuel Generators of 2024

Westinghouse WGen9500DF
  • Power Source: Dual Fuel
  • Running Watts: 9500
  • Starting Watts: 12500
  • Runtime: 11– 12 hours at 50% load.
  • Noise: 78 – 81 dB(A) at 50% load

Champion 4500
  • Power Source: Dual Fuel
  • Running Watts: 3500
  • Starting Watts: 4500
  • Runtime: 12– 13.5 hours at 25% load.
  • Noise: 62 – 65 dB (A) at 50% load

DuroMax XP13000HX Dual Fuel Portable Generator
DuroMax XP13000HX
  • Power Source: Dual Fuel
  • Running Watts: 13000
  • Starting Watts: 10500
  • Runtime: 12– 13 hours at 25% load.
  • Noise: 76 dB (A) at 25% load

DuroMax XP5500EH Dual Fuel
  • Power Source: Dual Fuel
  • Running Watts: 4,500
  • Starting Watts: 5,500
  • Runtime: 18 – 18.5 hours at 25% load.
  • Noise: 72 – 74 dB (A) at 50% load

WEN DF475T Dual Fuel
  • Power Source: Dual Fuel
  • Running Watts: 3800
  • Starting Watts: 4750
  • Runtime: 10.3 hours at 50% load.
  • Noise: 73 – 75 dB (A) at 50% load

Pulsar G12KBN
  • Power Source: Dual Fuel
  • Running Watts: 9500
  • Starting Watts: 12000
  • Runtime: 11.5 hours at 50% load.
  • Noise: 74 – 76 dB (A) at 50% load

Champion 2500 Watts
  • Power Source: Gasoline
  • Running Watts: 1850
  • Starting Watts: 2500
  • Runtime: 11 hours at 25% load.
  • Noise: 55 – 57 dB (A) at 50% load.

1. Westinghouse WGen9500DF – Best Overall


  • 9500 Running and 12500 Surge Watts on gasoline
  • 8500 Running and 11200 Surge Watts on Propane
  • 457cc Westinghouse 4-Stroke OHV Engine
  • VFT display
  • Remote, recoil, and electric start
  • CARB and EPA certifications
  • With 50% load, you will get 78 to 81dB (A)
  • 20, 30, and 50 Amp Outlets.
  • RV ready
  • Provides 13.8 hours on gasoline @ 50% load.
  • Weight: 211lbs.
  • Dimensions: 27.2 x 26.1 x 26.5 inches
Westinghouse WGen9500DF

Westinghouse WGen9500DF is the best dual fuel generator available in the market with massive wattages, decent runtime, and lower noise levels with a reliable mobility kit to roam around without even breaking a sweat.

Well, I got my delivery within the expected time frame with pretty solid packaging, though the unit comes with some minor scratches, still, there wasn’t any major issue with the frame, engine, components, etc. so I decided to keep it.

The box contains a mobility kit, engine oil, oil funnel, battery charger, propane hose, tool kit, and a user’s manual. Also, the assembling process is pretty easy I just spend 10 – 15 minutes to get this thing ready.

Ports, outlets, and essentials: WGen9500DF features almost all essential ports a normal user looking for, also they have utilized weatherproof rubber flaps to keep the outlets safe from the snow, rain, or bugs.

Below is the list of ports.

  • 1×120/240V AC, 50A outlet
  • 1×120/240V AC, 30A RV ready outlet
  • 2x120V AC, 20amp, 5 – 20R GFCI outlets
  • Main breaker with separate breakers for each outlet
  • Battery charging port
  • Engine shut off
  • Push start
  • Fuel selector
  • ST switch
  • VFT meter for monitoring voltages, frequency, and life hours

Capacity Test: Since WGen9500DF contains a beast 4-Stroke OHV Engine of 457cc with long-lasting cast iron sleeves, I Start my test with a 3 tons (40,000 BTU) central AC unit with 7000+ starting and 6000 running wattages.

The results were pretty promising, I didn’t find this beast under power. I also run my drills, different saws, ovens, washing machines, etc. I must say this is one of the most powerful dual-fuel generators I have ever seen in my life.

NOTE: The tests were conducted on both gasoline and propane separately. With gasoline, I am able to draw 9300 Running and 12000 surge Watts, however, with propane I got 8200 Running and 11000 surge Watts.

Runtime Test: The unit comes with 6.6 gallons of a fuel tank with the option to attach a propane hose, I have conducted the following tests.

  • At 75% load on gasoline, I got 9.5 hours of runtime.
  • At 50% load on gasoline, I got 13.8 hours.
  • With a 40-lb propane tank, I got 6 hours at 70% load, however, at 50% load I got around 8 to 8.5 hours.

Noise Test: At 50% load, this machine was emitting around 78 to 81 dB (A), however at 25% load I was getting around 74 to 76d dB (A) which is pretty obvious for this size of open frame generator.

You can reduce the noise levels significantly by building a perfect enclosure or configuring a large muffle.

This guide may help you to make your generator quieter.

Safety and Warranty: Westinghouse WGen9500DF is certified by EPA and CARB, I barely smell the bad odor of fuel unless I have overflowed the fuel tank.

Also, it has lots of safety features like low oil shutoff, safety breakers, etc. Additionally, you will have 3 years of limited warranty.

  • High Capacity
  • Efficient on both gasoline and propane
  • Safe from both user and environment
  • Easier maintenance
  • Normal noise levels as per the size
  • Budget-friendly price tag.
  • Easy to switch between fuels
  • Heavy with Average Noise levels, you need an enclosure if you are going to place it near the RV or House.
  • No carbon monoxide sensor

Who Should Buy This?

It is ideal for the user who wants to get a high-capacity dual-fuel backup generator for the work site, house, RV, or even camping, within a mid-range price tag. Also, decent runtime, normal noise levels, and an impressive mobility kit would be a bonus.

Here is the detailed review of Westinghouse WGen9500DF

2. Champion 4500-Best Dual Fuel Inverter Generator


  • Gasoline wattage: 4500 peaks and 3500 running watts
  • Propane wattage: 4500 peak and 3150 running watts
  • 4 – mode intelligauge
  • <3% THD levels
  • 212cc OHV 4 – stroke engine
  • Dual fuel with 2.25 Gallons of gasoline
  • Parallel support
  • 3 years of the limited warranty
  • Noise levels: 62 – 65dB (A) from 20ft @ 25% load
  • Runtime: Provide 13 – 13.3 with a single tank of gasoline @ 25% load
  • Weight: 95 lbs
  • Dimensions: 23.2 x 17.7 x 20.1 inches
  • EPA, CARB, and PGMA G300-2018 certified

Champion 4500 comes with a pretty portable design that features the latest inverter technology to ensure lower noise levels with enhanced efficiency. I mostly use this generator for camping, tailgating, and sometimes for boating as well.

The unit arrived within the right time with protected packaging; the box contains Engine Oil, a tool kit, USB Adapter, a remote control, an Oil Funnel, a user’s manual, and a quick start guide.

The built quality is also awesome, the enclosure is made from hard plastics, and the engine and essential components are made of high-grade metal.

Ports, outlets, and essentials:

  • EZ starting dial.
  • 4 – mode intelligauge that shows the runtime, voltage, frequency, and sessions.
  • 120V, 30amp AC Rv ready Outlet.
  • Circuit breakers.
  • Dual 120V, 20amp AC outlets.
  • Parallel ports.
  • Battery switch.
  • Ground terminals.
  • 12V DC 8amp.

Capacity Test: Champion 4500 comes with a 4-stroke OHV engine of 212cc that can generate 4500 starting and 3500 running watts on gasoline, however with propane you will get 4500 starting and 3150 running watts with little to no total harmonic distortions (<3%) on both.

In addition to that, you can utilize its parallel ports to double your wattage. Well, I have run the following appliances to get better insights.

ApplianceRunning WattsStarting Watts
Space Heater 1800 1800
Sump Pump (1/3 HP)8001300
Coffee Maker10000
Electric Oven21500
Washing Machine11502250
Bench Grinder14002500
Air Compressor (0.50 HP)10002000

Runtime Test: The unit comes with a 2.25 Gallons of gasoline tank and an option to switch from gas to propane.  Below are the results of our tests.

  • As per the specification, this generator could provide 14 hours of runtime at 25% load, however, we got 13.3 hours which is not bad.
  • With 20lb. of propane tank (4.6 gallons of fuel), i got 17 – 18 hours at 25% load, however, at 50% load, I only get 10 hours.

Noise Test: As per the specifications this unit is pretty quiet and emit only 61dB (A), well we don’t rely on the specifications we have a team for conducting tests, below are the results.

  • At no load, we got 61 – 62dB (A) from 20ft away, however, with the eco mode “ON”, it emit around 57 to 59dB (A).
  • With 25% load, we got 63 – 65dB (A) from 20ft away.
champion power equipment 4500 dual fuel noise test

This machine is quieter than my expectations, I am placing it 40 – 50ft away from my camp to get a super silent environment.

Maintenance: Like all champion inverter generators this machine is pretty easy to maintain,  you just have to check the engine oil, clean the filters, spark plugs, etc on a regular basis.

Safety, customer support, and warranty: Champion 4500 dual fuel has earned certifications from the EPA, CARB, PGMA G300-2018 and proved to be more eco and appliance-friendly compared to the non-inverter generators. Furthermore, it comes with 3 years of limited warranty.

  • Safe for appliances and the environment.
  • Equipped with all essential outlets and ports.
  • Easy startup and usage.
  • Easy maintenance.
  • Budget-friendly.
  • Easy to transport.
  • Ultra-durable with a decent warranty.
  • Small fuel tank

Who Should Buy This?

This is the best dual-fuel inverter generator for a user who needs normal power with an extremely portable design that can roam around without breaking a sweat.

Here is the detailed review of champions 4500

3. DuroMax XP13000HX Dual Fuel Portable Generator


  • Starting and running watts on Gasoline: 13000/10500
  • Starting and running watts on propane: 12350/9975
  • Runtime on Gasoline: 9 – 10 hours at 30 – 40% load
  • Runtime on Propane: 6 – 6.5 hours at 30 – 40% load
  • Noise Levels at 25% load: 76dB (A)
  • CO detector and low oil alert
  • Dual fuel
  • 20, 30, and 50 amp outlets
  • Fuel Switch
  • Push start with a digital multimeter
  • 500cc OHV DuroMax 4 Stroke Engine
  • Whole metal construction
  • Dimensions: 30 x 29 x 26 inches
  • Weight: 246 lbs.

XP13000HX is a true workhorse that can power your entire house or job site including the HVAC, Water heaters, Air compressors, saws, welders, etc.

Because of the powerful engine, portable design, versatile control panel, and affordable price tag, this machine could be a great weapon to cope with power outages and storms.

Well, I got my unit within the right time with no damage, the box contains a tool kit, spark plug wrench, oil funnel, propane regulator, mobility kit, and a user’s manual.

Control Panel and Ports: A central control panel is adopted with a digital multimeter, a front-facing interface, and a push start button to fire up the generator in an instant, also fuel selector is a helping hand to convert the fuels in seconds.

Below are the outlets and essentials of XP13000HX.

  • 2 X Duplex 120V, 20A GFCI Outlets
  • 1 X 120V, 30A AC Outlet.
  • 1 X 120/240V, 30A AC Outlet.
  • 1 X 120/240V, 50A AC Outlet.
  • AC breaker
  • Push start
  • Multimeter (Voltage, Frequency, Hours Run)
  • Low oil
  • Idle control
  • Battery switch
  • Fuel selector switch
  • Propane inlet
  • CO alert

Capacity/Load Test: DuroMax XP13000HX is equipped with a powerful 500cc OHV DuroMax engine that can generate around 13,000 surges and 10,500 rated watts on gasoline, however with propane, you will get around 12,350 surges and 9,975 rated watts.

Below are some of the tools and appliances I have operated with this beast.

ApplianceRunning WattsStarting Watts
Central AC 40.000 BTU 6000 7500
Clothes Dryer50007000
Air Compressor (1.50 HP)22006000
Concrete Vibrator (2.00 HP)18003600
Electric Oven21500
Washing Machine11502250
Bench Grinder14002500
High-Pressure Washer (1.00 HP)12003600

NOTE: As per my test this generator isn’t providing super smooth sine waves like Champion 4500 or Westinghouse IGen4500, I was getting around 10 – 15% THD which is “OK” for most of the appliances, however for voltage-sensitive appliances I highly recommend to use a Standalone Inverter or UPS.

Runtime Test: Though XP13000HX has a huge fuel tank of 8 gallons that can last for about 8 – 8.5 hours at 50% load, still, DuroMax has infused a dual fuel technology to ensure uninterrupted running.

Below are the results of my testing on both gasoline and propane.

  • Gasoline: I got 9 – 10 hours of runtime with a single tank of gasoline at 30 – 40% load, however with increased load you have to compromise on the runtime.
  • Propane: With a 40 lb (approx 8.5 gallons) propane tank I got about 6 – 7 hours of runtime at 30 – 40% load which is pretty standard for this size of the generator.

Noise Levels: Though the XP13000HX is a very powerful machine, still it’s too loud, even though I am not placing it 40 ft. away without a proper enclosure; a portable enclosure is a great bet to dampen the noise efficiently.

As per my tests, I was getting around 78 – 80dB (A) at 30% load, however with 50% – 60% load, this thing touches 88 – 90dB (A).

Built Quality and Portability: Like DuroMax XP13000EH and XP12000EH, the frame of XP13000HX is also constructed from a durable non-corrosive metal with 100% copper windings and cast iron sleeve to ensure better efficiency, power, and longevity.

Despite not being lightweight and compact, this Machine has a convenient mobility kit for hassle-free transportation.

Safety, Warranty, and Customer Support: Unlike the EH series, the latest HX series is equipped with a super-sensitive CO detector to eliminate the threats of Carbon monoxide poisoning by automatically shutting off the machine.

Aside from that, XP13000HX is EPA and CARB certified and is extremely safe for humans, the environment, and appliances as well.

When it comes to warranty and customer support, DuroMax is offering 5 years of warranty with nationwide customer care centers for super quick response.

  • High Capacity
  • Longer runtime
  • Extremely durable
  • Versatile control panel
  • Safe and eco-friendly
  • Easy to operate and maintain
  • Can work as a backup generator
  • Higher THD (total Harmonic distortion)
  • Noisy
  • Heavy

Who Should Buy This?

This generator is for those who need a solid backup generator for the house or worksite that can run almost every appliance or power tool. We highly recommend having a look at this machine before spending thousands of bucks on a standby generator.

4. DuroMax XP5500EH Dual Fuel – Best For Rv


  • Gasoline wattages: 5,500/4,500
  • Propane wattages: 5,225/4,275
  • 224cc OHV.
  • MX2 Technology
  • 4 gallons of a Gasoline tank
  • Dual fuel
  • 18 – 18.5 hours on runtime on gasoline at 25% load
  • 17 – 17.5 hours of runtime n propane at 25% load
  • RV ready
  • Low oil shutoff
  • Versatile control panel
  • Noise: 70 – 73dB (A), on average
  • Dimensions: 25x 22x 22 inches
  • Weight: 136lbs
DuroMax XP5500EH Dual Fuel

DuroMaz XP5500EH is the best dual-fuel generator for RVs available in the market with sufficient starting and running wattages, dual-fuel technology, and decent portability.

When it comes to the delivery the team of DuromMax was very kind and they sent the package in less than expected time. The packaging was pretty solid with multiple foams to protect the generator. The package includes an oil funnel, some plugs, a mobility kit, a tool kit, and some user manuals.

DuroMax XP5500EH  Electric Start unboxing

Outlets and essentials:

  • 1×120/240, 30A AC Rv ready outlet.
  • 2×120, 20A AC GFCI Outlets.
  • Circuit breaker.
  • MX2 Switch.
  • Volt meter.
  • Low oil indicator.
  • Battery plug and DC circuit protector.
  • Engine start.
  • Grounding nut.

Capacity Test: DuroMax XP5500EH has a 224cc OHV engine that can draw 5,500 starting and 4,500 running watts on gasoline and 5,225 starting and 4,275 running watts on propane.  It also has MX2 technology for getting maximum power from each outlet.

The only flaw I found is that its THD levels recorded pretty high almost 12 – 14% which is not good for voltage-sensitive appliances.

Well, we have run the following appliances for testing capacity.

ApplianceRunning WattsStarting Watts
Space Heater 1800 1800
Table Saw (10″)1,8001300
Sump Pump8001300
Coffee Maker10000
Electric Oven2,150 W0
Bench Grinder14002500
Air Compressor (0.50 HP)10002000
Steam Iron2200300

Note: We have done the above tests on both gasoline and propane, and the results were pretty awesome.

Runtime Test: DuroMax XP5500EH has 4 gallons of a tank with an option to attach a propane tank. Below are some insights we got from our runtime tests.

  • With a 25% load on gasoline we got 18 – 18.5 hours of runtime with a single tank, however with a 50% load I got 8.3 – 8.7 of runtime. Though they didn’t match the manufacturer’s statements, still its runtime is more than our expectations.
  • With a 25% load on propane we got 17.5 – 18 hours of runtime with a single tank of propane (20lbs), however with a 50% load I got 8– 8.5 of runtime.

Noise Test: As per the specs it will generate 69dB (A), on average, however, I got 70 – 72dB (A), from 25fts away with gasoline and 72 – 74ddB (A), on propane which is pretty average, don’t expect super silent performance like the champion 4500 inverter generator.

Safety, Warranty, and Durability: DuroMax XP5500EH comes with CARB and EPA certification with extremely low carbon footprints. Also, the manufacturer has infused the 100% Copper windings backed by 3 years of limited warranty and great customer support.

Caution: The THD levels of this machine are high so please avoid adding any voltage-sensitive appliance directly.

Maintenance: Maintenance of this machine is super easy like other generators, you just have to change the engine oil, filters, and spark plug if needed.

  • Budget-friendly
  • Easy to assemble and operate
  • Safe and eco friendly
  • Portable
  • Easier maintenance
  • Durable windings with all-metal construction
  • 3 years of warranty
  • Higher THD levels
  • Noisy

Who Should Buy This?

The purpose of launching this generator is to provide decent portability and wattage with a dual fuel option for small houses and RV owners within a mid-range price tag.

5. WEN DF475T Dual Fuel – Best Budget Dual Fuel Generator


  • Gasoline wattages: 4750/3800
  • Propane wattages:  4350/3500
  • 224cc 4-stroke OHV engine
  • RV ready
  • THD Levels: 2.5% – 15% depending on the load
  • Noise levels: with 100% load we got 79 – 8dB (A),
  • Fuel tank size: 4-gallon
  • Fuel options: dual fuel
  • Runtime on gasoline: 10.3 hours @50% load
  • Runtime on propane (20lbs tank): 6 hours @50% load
  • Weight: 105.8lbs
  • Dimensions: 23.2 x 17.5 x 18.5 inches

WEN DF475T is the best budget dual inverter generator available in the market with decent power and runtime and a futuristic control panel that will be a good friend to you during the RV trip. 

I purchased this unit for tailgating to operate my electric smoker, small freezer, and other essentials like a sound system, etc.

WEN delivered my unit before the delivery date with no damage; the box includes an oil funnel, engine oil, mobility kit, some tools, and a user manual. Though this isn’t an expensive unit like the Champion 4500 and Westinghouse WGen9500DF, it is still constructed from a high-grade metal that can be felt by knocking up the frame.

WEN DF475T Dual Fuel First look

Outlets, ports, and essentials:

  • Fuel switch
  • Electric start
  • 12V DC cigarette-style port
  • 2 x 120, 20A GFCI outlets
  • Circuit breaker both for AC and DC
  • Voltage selector (for switching between 120V and 240V)
  • 1 x 120/240, 30A RV ready outlet

Capacity/load test: WEN DF475T has a powerful 224cc 4-stroke OHV engine that can generate 4750 surges and 3800 running watts on gasoline; however on propane, it can draw 4350 surges and 3500 running watts.

In addition to that, it produces ~2.5% THD levels with no load; however, with a full load, it produces ~15% which is not good for voltage-sensitive appliances.  Don’t ever plug a voltage-sensitive appliance with 100%, I always use my UPS with 25% or 40% load.

The following Tools and appliances we have run with this machine.

ApplianceRunning WattsStarting Watts
Electric smoker8000
Electric Chain Saw 14″12000
Sump Pump8001300
Coffee Maker10000
Small fridge75100
Air Compressor (0.50 HP)10002000
Bench Grinder14002500

Noise Level: We have done the following tests to figure out how roars this unit is.

  • With no load, we got 70 – 72dB (A), from 25ft away, however with a 25% load we got 73 – 75dB (A).
  • With 100% load, we got 79 – 81dB (A), from the same distance.

The above results are clear proof that this generator can’t be placed near camp or RV, I always keep it at least 50 – 60ft away.

Runtime/Fuel Efficiency Test: WEN DF475T comes with a 4-gallon gasoline tank and the option to attach a propane tank.  As per our process, we have conducted a few tests on both gasoline and propane below are the results.

  • Gasoline Test: At half load, it runs for 10.3 hours, however at full load it runs for 5 hours which is not bad.
  • Propane Test (20lbs tank): At 50% load my propane tank last for 6 hours, however at 100% load it only lasts for 3.4 hours. Though we got slightly less runtime according to the statements of the manufacturer it’s completely fine since we are not spending thousands of bucks.

Maintenance: It needs normal maintenance, like refilling engine oil, cleaning filters, replacing spark plugs, etc.

Safety, warranty, and customer support: The machine complaints with the standards of CARB and comes with 2 years of warranty and great customer support. The only flaw I got it produces higher THD levels with 75% – 100% load which is not acceptable for voltage-sensitive appliances.

  • Budget-friendly
  • Easy to use and maintain
  • Safe and durable
  • Longer runtime with decent capacity
  • Portable
  • Fully functional control panel
  • Longer warranty
  • Noisy
  • Higher THD levels

Who Should Buy This?

We add this unit, especially for those who want to get sufficient runtime and capacity with excellent portability within a mid-range price tag. If you don’t want to spend thousands of bucks this unit is solely built for you.

6. Pulsar G12KBN Heavy Duty – Best For Home


  • Gasoline wattage: 12, 000/9,500
  • Propane wattages: 10, 800/ 8,550
  • 457cc 4-stroke, OHV air-cooled engine
  • Less than or equal to 8% THD
  • Gasoline Runtime: 11.5 hours @ 50% load
  • Propane Runtime: 12 hours @ 50% load.
  • Noise @ 30% load: 74 – 76dB (A), on average
  • RV ready
  • EPA and CARB Compliant
  • Fuel tank size: 8 gallons
  • 3-in-1 digital meter
  • Weight: 209lbs
  • Dimension: 28.5 x 26 x 25.5 inches

Like Westinghouse WGen9500DF Pulsar G12KBN is an ideal machine for emergency situations, this generator not only offers higher wattages but also provides a dual fuel option, a huge fuel tank, and a control panel.

I ordered this for my brother who is currently living In Cape Hatteras, well the packaging was outstanding, I didn’t find a single scratch on the body. The box includes a battery, mobility kit, propane hose, spark plug, some tools, and user manuals.

PulsaeG12KBN condition after unboxing

Ports, outlets, and essentials:

  • 1×120/240, 50A AC outlet
  • 1×120/240, 30A AC outlet
  • 2 duplex 120, 20A AC outlets
  • Main breaker with separate breakers for each outlet
  • 3 in 1 digital meter that shows voltage, frequency, and hours
  • Low oil shutoff lam
  • Battery plug
  • Dc breaker
  • Engine start

Runtime Test:  Pulsar G12KBN comes with a huge tank of 8 gallons with an option to operate on propane as well, we have done the following tests to get accurate insights.

  • With gasoline, at 50% load, we got 11.5 hours of runtime.
  • With a propane tank of 40 lbs, we got 12 hours of runtime at 50% load.

The results were pretty satisfactory with 8 gallons of gasoline or 40lbs of propane you can spend a whole winter night comfortably.

Capacity/Load Test: The beast has a 457cc 4-stroke, OHV air-cooled engine; you can easily draw 12, 000 starting and 9, 500 running watts on gasoline; however with propane, you can draw 10, 800 starting and 8,550 running watts. My brother is using almost every essential of his house including a 2-ton central air conditioning.

Additionally, it provides decently cleaned power compared to Duromax and other competitors, since it produces less than or equal to 8% THD levels you can fearlessly operate modern appliances.

Table of appliances we have tested with Pulsar G12KBN:

ApplianceRunning WattsStarting Watts
Space Heater18001800
Circular saw1,4002,300
Sump Pump8001300
Coffee Maker10000
Small fridge75100
Electric Oven2,1500
Central AC50007000
Electric Tankless water heater70007000

Noise Test: As per our tests this isn’t a silent unit you have to keep it at least 70 – 80 away from your house, Rv, or camp.

Below are the results of our tests.

From 30fts away at 30% load, we got 74 – 76dB (A), however with 50% load we got 78 – 79dB (A) on gasoline.

Also with propane, you will get slightly higher dB (A).

The bottom line is you have to compromise the noise levels if you want to get huge capacity or you should go with Westinghouse WGen9500DF since it provides equal or higher capacity with lower noise levels.

Safety & Warranty: Like all our dual-fuel generators, this unit is also certified by the EPA and CARB. Furthermore, it comes with 1 year of warranty and decent customer support.

Maintenance: This unit can be maintained for under 30 minutes, as it only needs fresh engine oil, cleaned filters, and a new spark unless it needs a tune-up, etc.

My brother changed the engine oil, filters, and spark plugs right after 90–100 hours of continuous run.

  • Budget-friendly
  • Easy to maintain
  • Safe for appliances and the environment
  • Impressive wattages
  • Multiple outlets
  • Easy mobility
  • Multiple startup and fuel options
  • Transfer switch ready
  • Noisy and bulky

Who Should Buy This?

Pulsar G12KBN is ideal for medium houses, job sites, and RV owners who want top-notch capacity to run some of the power-hungry tools, and appliances like central air conditioning, welders, space heaters, air compressors, etc.

7. Champion 2500-Watt – Best Quiet Dual Fuel Generator


  • Gasoline wattages: 2500/1850
  • Propane wattages: 2500/1665
  • 4-stroke 79cc OHV engine
  • <3% of THD levels
  • Gas tank size: 1.1 gallons
  • Noise levels @50% Load: 55 – 57dB (A)
  • Runtime @25% load: 11 hours on gasoline, however, it provides 32 hours with 20lb of propane
  • Dual fuel
  • Parallel ready
  • Cold Start Technology 
  • Covered outlets
  • Dimensions: 17.3x 12 x17.7 inches
  • Weight: 39lbs

Champion features a super portable design with a weight of only 39lb that can be adjusted in your camper, food truck, or even boat. Well, I am using this for an RV and sometimes for my little camper.

The unit comes within the expected time with durable packaging. The box contains a propane hose, oil funnel, engine oil, some manuals, and a USB charger.

My first impression of the Champion 2500 is pretty satisfying, it is barely heavier than my travel briefcase with a decent handle for lifting. Though the construction of the whole unit is not from metal, still; I found a pretty rigid plastic-like champion 4500.

Ports, outlets, and essentials:

  • EZ Fuel selector dial.
  • 1x12V,8A DC port
  • 2x120V, 20A AC outlets.
  • Indicating lights (overload, low fuel, economy mode).
  • 20 and 8 A circuit breaker
  • Ground terminal.
  • Parallel ports.
  • Propane inlet.

Capacity/load Test: Champion 2500 watts comes with a 4-stroke 79cc OHV engine that can draw 2500/1850 watts on gasoline and 2500/1665 on propane. Also, it produces ultra-clean power with <3% of THD levels.

Well, we have conducted two tests, one with gasoline and the other with propane below are the results.

Gasoline: I run a refrigerator of 400w, an oven of 1000watts, and an electric cooker of 500 watts, I didn’t find the red light at 1900 watts. Also with the eco mode, the generator supplies about 1800 to 1850 watts which is amazing.

Propane: I take similar appliances and start hooking up with the machine, at 1600w it works pretty fine, after crossing 1650w it shows the red light.

Runtime test: Champion 2500 dual fuel inverter generator comes with 1.1 gallons of gas tank and an option to add a 20lb of propane tank for longer runtime.

The following tests we have conducted for our audiences:

1st Test: I fill up the gasoline tank and put 25% load with eco mode ON, It runs for 11.2 hours, however at 50% with ECO mode OFF it runs for 5.9 – 6.2 hours.

2nd Test: I took a 20lb propane tank and hooked it up with my unit, at 25% load I got 32 hours, however with eco mode off at 50% load It only lasted for 17 hours.

Noise Test: Since this is an inverter generator with a pretty closed super quiet design, I got 52 – 53dB (A), from 20ft away with zero loads (idle), however with 100% load I got 65 – 66dB (A), from 20ft away. As per my 3 months of experience, the unit is pretty quiet if you are not pushing its limits, I used to place it 35 – 40ft away from my camp to get super-quiet operation.

Champion 2500-Watt Dual Fuel Noise Test

Maintenance: Maintenance of this unit is not that hard, since it’s lighter and the spark plug, engine oil, and filters are pretty easy to access compared to the bigger units.

Safety and warranty: The unit is certified by EPA and CARB with very low CO2 and other harmful gas emissions. Additionally, champion offers 3 years of limited warranty and lifetime technical support nationwide.

  • Light and compact
  • Quiet and safe operation
  • Multiple outlets and fuel options
  • Durable
  • Easy to operate and maintain
  • Longer warranty
  • No electric start
  • Lower-sized fuel tank

Who Should Buy This?

Champion 2500 watts is an ideal choice for camping geeks, since it is portable with a longer run time, dual fuel option, and decent capacity you will be able to run all the camping essentials like small refrigerators, ovens, electric stoves, etc.

Here is the detailed review of Champion 2500-Watt

How To Buy The Best Dual Fuel Generator

What Are Your Power Needs?

I always calculate the wattages of appliances and add 10 – 15% extra wattage so that the loss of power will be balanced. Below is the formula for calculating the watts from the voltage and amps.

Watts = Volts x Amps

Suppose you have an oven of 120V that consumes about 10 amps you can use this formula to get the actual wattage readings:

Watts = Volts x Amps

= 10 x 120 = 1200 watts.

1200+180(15% extra) = 1280

Note: There are two wattage readings one is starting/surge and the other is running/peak you have to calculate both. For a better understanding, you can follow our guide about generator sizing.

Fuel Tank Size and Runtime (Efficiency):

Everybody wants to get a generator that can provide at least 7 – 10 hours of runtime at 50% load on both gasoline and propane so that a user can spend the long winter nights comfortably.

In addition to that, a machine should have sufficient fuel tank size, so that you don’t have to refill your generator rapidly unless you have a 50 – 100 gallon propane tank.

NOTE: The size of the fuel tank is pretty subjective since some generators like a Champion 2000 watts come with 1.1 gallons of the tank and last for 6 – 7 hours, on the other hand, some have 4 or 5 gallons of the fuel tank and last equally as champion 2000 watts, so it depends on your needs and generator portability. The larger the size higher the fuel consumption.

Noise Levels:

No one wants to get a roar dual fuel generator that not only disrupts your conversation but also your neighbors. A unit that can emit 60 – 70dB (A), from 30ft away is considered a good generator, you can keep it 50 – 60ft away to get super-quiet operation.

As per my experience, a dual-fuel generator emits some more decibels on propane compared to gasoline, so if propane is your primary source of fuel make sure to get a silent unit.

Safety Features:

Those generators that have CARB and EPA certifications are considered safe for environmental users and appliances. Additionally, they should have lower THD (total harmonic distortion) so that your voltage-sensitive appliances will be safe.

Caution: If you are going to use a generator in a closed space with normal ventilation please install a CO detector or get a unit with a CO detector.

Portability (Size and Weight):

A compact and portable generator is always a helping hand for a person like me, since I always do tailgating, camping, and outdoor parties I can’t take a bulky unit.

If your wattage needs are high and you can’t get a lighter unit, please get a unit with at least a mobility kit so that you can move it easily like a travel bag.

Price Tag:

Always choose a unit that provides the best value for the money, Though you have to spend more to get more features, still, weigh your needs first and choose accordingly. Spending 3 or 4 hundred more isn’t a wise decision for getting some features like remote start etc. However, I happily spend more to get more wattage as per my needs.

Outlets, Ports, and Essentials:

The following outlets should be in your desired dual duel generator:

  • 120/240V AC, 50amp outlet
  • 120/240V AC, 30amp RV ready outlet
  • 120V AC, 20 amp outlets
  • Breakers
  • Battery charging port
  • Engine shut off
  • Fuel selector
  • An LED or meter for monitoring voltages, frequency, wattages, life hours, etc.

Are Dual Fuel Generators Worth It?

The major benefit of having a dual fuel generator is you always have Plane “B”. If you don’t have access to gasoline you can use propane, however, if you don’t have access to propane you can still utilize gasoline.

Also, propane is cheaper and eco-friendly as the prices of fossil fuels are constantly increasing, we should have to consider a cheaper option if it is available.

We also have written the advantages of dual-fuel generators below.

Should I Choose a Conventional or Inverter Dual Fuel Generator?

We prefer inverter generators, Though they are expensive, still provide efficient and clean power with lower THD levels, moreover, they are compact and quieter compared to the conventional units with lots of modern features.

In the case of conventional units, you may face slightly higher noise levels, CO2 emissions, and THD levels. Also, they are bulky as well.

If money is not a problem we highly recommend you get a dual-fuel inverter generator.

Advantages of a dual fuel generator

  • Propane is cheaper compared to gasoline; you can save almost half of your cost.
  • It emits less CO2 and other harmful gases and is considered a cleaner source of energy for our environment.
  • You always have u003cstrongu003ePlane Bu003c/strongu003e, if you run out of gasoline.
  • Can integrate 100 lbs of a propane tank with a generator, however in the case of gasoline you have to refill a 5 or 6-gallon tank again and again.
  • Since propane is a gas, you don’t have to care about spilling.

Disadvantages of a Dual Fuel Generator

  • Propane tanks are heavy
  • Provide less starting and running wattage compared to gasoline, as gasoline is a more powerful and efficient fuel
  • Fewer generators are available in the market with dual fuel options.


I hope you got your best dual-fuel generator with the desired features; we haven’t left any stone unturned to provide you with a detailed analysis of the latest dual-fuel generators available in the market with different wattages, designs, and mechanisms.

Still, if you are confused, below are our selected machines make sure to get one from them.

Thanks for reading out our guide!

FAQs – Frequently Asked Questions

Is dual fuel better than a gas generator?

No one wants to reject a cost-effective generator with multiple fuel options since dual fuel provides an additional opportunity to run on propane which is cheaper and eco-friendly compared to gasoline.u003cbru003eAlways hunt for a dual-fuel generator but sadly there is a limited option in the market.

How long a dual-fuel generator will run on propane?

Depending on the size and type of the generator, some provide 4 – 5 hours of runtime on a 20lb of propane at 50% load, however, some provide more than 10 hours. u003cbru003eWe have written a detailed guide about how long a generator lasts Make sure to have a look for a better understanding.

Can you run a dual-fuel generator on natural gas?

No, a properly designed dual-fuel generator can’t run on natural gas, however, with some modification you can run it on gasoline.

What is the biggest dual-fuel generator?

DuroMax XP15000EH is currently the biggest dual fuel generator with a 50amp plug and other modern features as well.

josh Milan


Josh is a highly skilled electrician with specialized expertise in the field of generators. With years of experience under his belt, he has established himself as an expert in all aspects of generators, ranging from installation and maintenance to troubleshooting and repairs. Josh’s in-depth knowledge of electrical systems and his commitment to staying updated with the latest industry advancements make him a reliable and sought-after professional.

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