6 Best Dual Fuel Generators of 2023 – Decent Runtime & Capacity
In this article, our team of experts has selected the 6 best dual fuel generators from all over the market for daily life users. Read this article to find the best one for your house or RV.
The dual fuel generator is not only excellent for blackouts, but also for camping because you can attach a large propane tank to have continuous power.
After testing 16 dual fuel generators we are come up with the top 6 best dual fuel generators that provide longer runtime with decent capacity and portability. Additionally, we have listed those units that are lighter or have mobility kits so they can be moved easily by our users.
What Is a Dual Fuel Generator?
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 propane tank.
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Comparison Chart of The Best Dual Fuel Generators of 2023
| NAME | WEIGHT | DIMENSIONS | WATTAGES (Starting/Running) | NOISE FROM 25 Ft. | FUEL TANK | RATINGS | PRICE |
|---|---|---|---|---|---|---|---|
| Westinghouse WGen9500DF | 211lbs. | 27.2 x 26.1 x 26.5 inches | Gasoline: 9500/12500 LPG: 8500/11200 | 74 to 76dB | 6.6 gallons | 9.9 | |
| Champion 4500 | 495lbs. | 23.2 x 17.7 x 20.1 inches | Gasoline: 4500/3500 LPG: 4500/3150 | 62 – 65dBs | 2.25 gallons | 9.8 | |
| DuroMax XP5500EH Dual Fuel | 136lbs. | 25x 22x 22 inches | Gasoline: 5500/4500 LPG: 5225/4275 | 70 – 73dBs | 4 gallons | 9.7 | |
| WEN DF475T Dual Fuel 120V/240V | 105.8lbs. | 23.2 x 17.5 x 18.5 inches | Gasoline: 4750/38000 LPG: 4350/3500 | 73 – 75dB | 4 gallons | 9.7 | |
| Pulsar G12KBN Heavy Duty | 209lbs. | 28.5 x 26 x 25.5 inches | Gasoline: 12 000/9500 LPG: 10800/ 8550 | 74 – 76dB | 8 gallons | 9.7 | |
| Champion 2500-Watt | 39lbs. | 17.3x 12 x17.7 inches | Gasoline: 2500/1850 LPG: 2500/1665 | 55 – 57dBs | 1.1 gallons | 9.6 |
1. Westinghouse WGen9500DF – Best Overall
FEATURES & SPECS
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 move around.
Well, I got my delivery within the expected time frame with pretty solid packaging, though the unit comes with some minor scratches there was not any major issue with the frame, engine, components, etc. so I decided to keep it.
The box contains a mobility kit, engine oil, a funnel, a battery charger, a propane hose, and a tool kit. Also, the assembling process is pretty easy I just spend 10 – 15 minutes getting this ready.
Ports, outlets, and essentials: WGen9500DF features almost all essential ports a normal user looking for, also they utilized a rubber flap to keep the outlets safe from rain or bugs. Below is the list of ports.
- 1×120/240V AC, 50amp outlet
- 1×120/240V AC, 30amp 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 result is pretty awesome 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.
- With a 75% load on gasoline, I got 9.5 hours of runtime.
- With a 50% load on gasoline, I managed to get 13.8 hours.
- With a 40lbs propane tank, I am getting 6 hours with 70% load, however, with 50% load I am getting 8 – 8.5 hours.
Noise Test: With 50% load, I am getting around 78 to 81dBs, however with 25% load I am getting 74 to 76dBs.
You can reduce the noise levels significantly by building a perfectly enclosed or configuring a large muffle. here is the guide to do that.
Safety and Warranty: Westinghouse WGen9500DF is certified by the standards of EPA and CARB, I barely smell the bad odor of fuel unless I have overflowed the fuel tank. Also, have lots of safety features like low oil shutoff, safety breakers, etc. additionally you will have 3 years of limited service.
Who Should Buy This?
It is ideal for the user who wants to get a high-capacity dual-fuel generator within a mid-range price tag. Also, decent runtime, normal noise levels, and sufficient mobility would be a bonus.
Here is the detailed review of Westinghouse WGen9500DF
2. Champion 4500-Best Dual Fuel Inverter Generator
FEATURES & SPECS
Champion 4500 comes with a pretty portable design that features the latest inverter technology for getting lower noise levels and 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 however, the engine 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 peak/ 3500 running watts on gasoline and 4500 peak/3150 running watts on propane with little to no total harmonic distortions (<3%).
I am operating ultra-voltage-sensitive appliances like my UPS. In addition to that, you can utilize its parallel ports to double your wattage.
Well, I have run the following appliances for getting better insights.
| Appliance | Running Watts | Starting Watts |
|---|---|---|
| Space Heater | 1800 | 1800 |
| Sump Pump (1/3 HP) | 800 | 1300 |
| Coffee Maker | 1000 | 0 |
| Electric Oven | 2150 | 0 |
| Washing Machine | 1150 | 2250 |
| Bench Grinder | 1400 | 2500 |
| Air Compressor (0.50 HP) | 1000 | 2000 |
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 20lbs of propane tank (20 gallons of fuel) I manage to get 16 – 17 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 produced only 61dB, well we don’t rely on the specification we have a team for conducting tests, below are the results.
- At no load, we got 61 – 62dBs from 20ft away, however, with the eco mode, it emits 57 – 59dB.
- With 25% load, we got 63 – 65dBs from 20ft away.
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, and clean the filters on regular basis.
Safety, customer support, and warranty: Champion 4500 dual fuel earns certification from the EPA, CARB, and 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.
Who Should Buy This?
This is the best dual-fuel inverter generator for a user who wants normal capacity with a quiet operation, longer runtime, multiple fuel options, and impressive portability.
Here is the detailed review of champions 4500
3. DuroMax XP5500EH Dual Fuel – Best For Rv
FEATURES & SPECS
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 send 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.
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.
| Appliance | Running Watts | Starting Watts |
|---|---|---|
| Space Heater | 1800 | 1800 |
| Table Saw (10″) | 1,800 | 1300 |
| Sump Pump | 800 | 1300 |
| Coffee Maker | 1000 | 0 |
| Electric Oven | 2,150 W | 0 |
| Bench Grinder | 1400 | 2500 |
| Air Compressor (0.50 HP) | 1000 | 2000 |
| Steam Iron | 2200 | 300 |
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 69dBs on average, however, I got 70 – 72dBs from 25fts away with gasoline and 72 – 74dBs 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% cooper 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.
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.
4. WEN DF475T Dual Fuel 120V/240V – Best Budget Dual Fuel Generator
FEATURES & SPECS
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, still it is constructed from a high-grade metal that can be felt by knocking up the frame.
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.
| Appliance | Running Watts | Starting Watts |
|---|---|---|
| Electric smoker | 800 | 0 |
| Electric Chain Saw 14″ | 1200 | 0 |
| Sump Pump | 800 | 1300 |
| Coffee Maker | 1000 | 0 |
| Small fridge | 75 | 100 |
| Air Compressor (0.50 HP) | 1000 | 2000 |
| Toaster | 800 | 0 |
| Bench Grinder | 1400 | 2500 |
Noise Level: We have done the following tests to figure out how roars this unit is.
- With no load, we got 70 – 72 dB from 25ft away, however with 25% load we got 73 – 75dBs.
- With 100% load, we got 79 – 81dBs 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.
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.
5. Pulsar G12KBN Heavy Duty – Best For Home
FEATURES & SPECS
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 the 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.
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 40lbs, 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 compare 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:
| Appliance | Running Watts | Starting Watts |
|---|---|---|
| Space Heater | 1800 | 1800 |
| Circular saw | 1,400 | 2,300 |
| Sump Pump | 800 | 1300 |
| Coffee Maker | 1000 | 0 |
| Small fridge | 75 | 100 |
| Electric Oven | 2,150 | 0 |
| Toaster | 800 | 0 |
| Central AC | 5000 | 7000 |
| Electric Tankless water heater | 7000 | 7000 |
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, however with 50% load we got 78 – 79dB on gasoline.
Also with propane, you will get slightly higher dBs.
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 changes the engine oil, filters, and spark plugs right after 90– 100 hours of continuous run.
Who Should Buy This?
Pulsar G12KBN is ideal for the medium house, 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 heater, air compressors, etc.
6. Champion 2500-Watt – Best Quiet Dual Fuel Generator
FEATURES & SPECS
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 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 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 hook up with my unit, at 25% load I got 32 hours, however with eco mode off at 50% load It only last for 17 hours.
Noise Test: Since this is an inverter generator with a pretty closed super quiet design, I got 52 – 53dBs from 20ft away with zero loads (idle), however with 100% load I got 65 – 66dBs from 20ft away. As per my 3 months of experience, the unit is pretty quiet if you are not pushing its limits, I use to place it 35 – 40ft away from my camp to get super-quiet operation.
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 the limited warranty and lifetime technical support nationwide.
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
Things Should Be Considered Before Buying 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 reading one is starting/surge and the other is running/peak you have to calculate both. For a better understanding, you can follow this guide.
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 could 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 gallons 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. 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 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 the 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 for getting 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 for getting more wattage as per my needs.
Outlets, Ports, and Essentials:
The following outlets should be in your desired dual duel generator:
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
Disadvantages of a Dual Fuel Generator
Verdicts
I hope you got your best dual-fuel generator with 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
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.
I always hunt for a dual-fuel generator but sadly there is a limited option in the market.
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. We have written an article about that, so make sure to have a look for a better understanding.
No, a properly designed dual fuel generator can’t run on natural gas, however, with some modification you can run it on gasoline.
DuroMax XP15000EH is currently the biggest dual fuel generator with a 50amp plug and other modern features as well.
