When the power goes out, having a generator that runs on two different fuels can be the difference between comfort and misery. That is exactly why the best dual fuel generators have become the go-to choice for homeowners, RV campers, and anyone serious about emergency preparedness in 2026.
A dual fuel generator gives you the freedom to switch between gasoline and propane with a simple dial or switch. Gasoline delivers maximum wattage and is easy to find at any gas station. Propane burns cleaner, stores indefinitely without degrading, and never gums up your carburetor during long storage periods.
Our team spent weeks comparing 10 of the most popular dual fuel generators on the market. We looked at real-world runtime, noise levels, safety features, outlet configurations, and what actual buyers reported after months of use. Whether you need to power an entire house during a hurricane outage or run a few appliances on your next camping trip, this guide covers every wattage range and budget.
Table of Contents
Top 3 Picks for Best Dual Fuel Generators (August 2026)
Best Dual Fuel Generators in 2026
| Product | Specifications | Action |
|---|---|---|
| Westinghouse WGen9500DF 12500W |
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 Westinghouse WGen11500DFc 14500W |
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 DuroMax XP13000EH 13000W |
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 Westinghouse iGen12000DFc 12000W |
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| Champion 4000W Dual Fuel Inverter |
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 WEN DF475T 4750W |
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 WEN DF680iX 6800W Inverter |
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| Pulsar PG2200BiS 2200W Inverter |
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 Westinghouse iGen5000DF 5000W |
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 DuroStar DS13000MX 13000W |
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1. Westinghouse WGen9500DF 12500W Dual Fuel Home Backup Generator
Westinghouse 12500 Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered
12500 Peak Watts Gas
11200 Peak Watts Propane
457cc Engine
210 lbs
12hr Runtime
Pros
- Remote start with key fob
- Transfer switch ready 50A outlet
- 12 hours runtime on gasoline
- 8500 running watts on propane
Cons
- 210 pounds requires wheels to move
- Limited stock availability
I have recommended the Westinghouse WGen9500DF to more homeowners than any other dual fuel generator on this list, and the reason comes down to one thing: it just works when you need it. With 12,500 peak watts on gasoline and 11,200 peak watts on propane, this unit has enough muscle to run a refrigerator, furnace blower, well pump, lights, and entertainment electronics all at the same time during a power outage.
The remote start key fob is a feature I did not think I would care about until I had to start a generator in freezing rain at 6 AM. Push a button from inside your garage and the 457cc Westinghouse engine fires right up. You also get electric start and recoil pull start as backups, so you have three ways to get it running.
On the outlet side, Westinghouse includes a transfer switch ready 120V L14-30R 30A twist lock and an RV ready 120/240V 14-50R 50A receptacle. That means you can connect this directly to your home panel with a transfer switch or plug your RV straight in without adapters. The VFT data display shows real-time voltage, frequency, and lifetime hours, which I find genuinely useful for monitoring load.
The biggest complaint from buyers is weight. At 210 pounds, you will not be tossing this into a truck bed alone. Westinghouse ships it with flat-free wheels, but plan for two people to move it into position. Once placed, it stays put. The 6.6 gallon fuel tank delivers up to 12 hours of runtime at 50% load on gasoline, which easily gets you through an overnight outage without refueling.
Best Use Case for the WGen9500DF
This generator shines for whole-home backup power in the 2,000 to 3,000 square foot range. If you live in a hurricane zone or an area with frequent winter ice storms, the remote start and transfer switch ready outlet make it one of the most convenient options at this wattage.
RV owners who need 50-amp service will also find the 14-50R outlet exactly what they need. Just keep in mind the weight makes it better suited as a stationary or semi-portable unit rather than something you haul to tailgate parties.
What to Watch Out For
Stock fluctuates frequently on this model, and it often shows limited availability. If you see it in stock, I recommend grabbing it rather than waiting. Also note that while propane output drops to 8,500 running watts, that is still plenty for most essential circuits.
The 3-year limited warranty covers parts, labor, and service through Westinghouse’s nationwide network. Their customer support is responsive based on what I have seen from buyer reports.
2. Westinghouse WGen11500DFc 14500W Dual Fuel Generator
Westinghouse 14500 Peak Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered
14500 Peak Watts Gas
10500 Running Watts Propane
550cc Engine
230 lbs
19hr Runtime
Pros
- 14500 peak watts highest in lineup
- Built-in CO sensor
- 19 hours runtime on gasoline
- Low THD for sensitive electronics
Cons
- 230 pounds very heavy
- Higher price point
If the WGen9500DF is not enough power for your home, the Westinghouse WGen11500DFc steps up to 14,500 peak watts on gasoline and 13,500 peak watts on propane. This is the generator I point people toward when they have a larger home, a well pump, or live in an area where outages can last several days. The 550cc 4-stroke engine is the biggest in this lineup, and it shows in the output numbers.
What impressed me most is the runtime. Westinghouse pairs the powerful engine with a 9.5 gallon fuel tank, and the result is up to 19 hours of operation at 25% load on a single tank of gasoline. On a 20-pound propane tank, you still get about 7 hours. For overnight outages, you might only need to refuel once per day.
The built-in CO sensor is a critical safety feature that automatically shuts the generator down if carbon monoxide levels get dangerous. Given how many generator accidents involve CO poisoning each year, I consider this mandatory for any generator used near a home. The unit also has overload protection, automatic voltage regulation, and a digital hour meter.
Westinghouse uses durable copper windings in this model, which helps produce cleaner power and run cooler. The low total harmonic distortion makes it safe for laptops, phones, and modern TVs. The 4.8-star rating across nearly 3,000 reviews tells you that buyers are overwhelmingly happy with performance and reliability.
Best Use Case for the WGen11500DFc
This is purpose-built for larger homes in the 3,000+ square foot range, especially those with electric water heaters, well pumps, or multiple HVAC zones. If you want near-total home backup rather than just essentials, this is the unit that can handle it.
Construction sites and event organizers also gravitate toward this model because it can run multiple power tools or lighting setups simultaneously without breaking a sweat.
What to Watch Out For
At 230 pounds, this is a heavy piece of equipment. You will want to position it semi-permanently or invest in a wheel kit and recruit help for any moves. It is also at a higher price point than most generators on this list, which reflects the massive power output.
The 9.5 gallon tank means you are storing a significant amount of fuel. Make sure you have proper storage containers and fuel stabilizer on hand for gasoline, or lean on propane for longer-term preparedness.
3. DuroMax XP13000EH 13000W Dual Fuel Portable Generator
DuroMax XP13000EH 13,000-Watt Dual Fuel Portable Generator – Gas & Propane, Electric Start, Whole Home Backup Power, Transfer Switch Ready, RV & Emergency Ready
13000 Peak Watts Gas
10500 Running Watts
500cc Engine
234 lbs
CO Sensor
Pros
- 13000 watts whole home power
- Push button electric start
- All metal frame no plastic
- 100 percent copper windings
- 50 amp transfer switch outlet
Cons
- 234 pounds heavy
- Not smart home compatible
The DuroMax XP13000EH is a tank of a generator, and I mean that as a compliment. DuroMax built this unit with a heavy-duty all-metal frame and power panel with zero plastic parts. When you unbox it, you immediately feel the difference in build quality compared to competitors that use more plastic components.
With 13,000 starting watts on gasoline and 10,500 running watts, this unit has more than enough output for a whole home. The front-facing interface lets you switch between gasoline and propane in seconds with a simple dial. Push the button to start it electrically, or use the recoil backup if the battery is dead.
The 500cc DuroMax engine uses 100% copper windings instead of aluminum, which is a big deal for longevity. Copper conducts heat better, runs cooler, and extends the life of the alternator. The CO sensor adds a layer of safety that I always look for in generators used near living spaces.
DuroMax includes no-flat tires that roll easily over rough terrain, which matters because at 234 pounds you are not lifting this generator. The foldable handle makes it manageable to wheel around a job site or position it next to your transfer switch.
Best Use Case for the XP13000EH
This is one of the best dual fuel generators for whole-home backup if you want maximum durability and do not mind the weight. Contractors and people in severe weather zones appreciate the all-metal construction and copper windings for long-term reliability.
The 50-amp outlet makes it transfer switch ready right out of the box, and the variety of outlets means you can run everything from household appliances to heavy-duty tools.
What to Watch Out For
Some buyers have noted that real-world runtime at full load is shorter than expected. The engine burns fuel quickly when you are pulling maximum wattage, so plan your fuel supply accordingly. At lower loads, runtime improves significantly.
DuroMax customer service has a mixed reputation. While most buyers never need support, a few report slow response times. The 3-year warranty provides coverage, but I recommend registering your product immediately upon purchase.
4. Westinghouse iGen12000DFc 12000W Dual Fuel Inverter Generator
Westinghouse 12000 Peak Watt Dual Fuel Portable Inverter Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered, Low THD – Safe for Electronics, Parallel Capable, CO Sensor
12000 Peak Watts Gas
9000 Running Watts
457cc Inverter
187 lbs
64 dBA
Pros
- Inverter technology clean power
- Less than 3 percent THD
- 64 dBA quiet operation
- Up to 19 hours runtime
- Saves up to 50 percent on fuel costs
Cons
- Higher cost than conventional generators
- Availability varies
The Westinghouse iGen12000DFc is where inverter technology meets massive power output. Most inverter generators top out around 4,000 to 5,000 watts, but Westinghouse pushed this one to 12,000 peak watts on gasoline and 11,000 peak on propane. The result is clean, stable power that is safe for sensitive electronics at a scale that can back up your entire home.
What makes inverter technology worth the premium is the quality of the power output. With less than 3% total harmonic distortion, you can safely run laptops, phones, gaming consoles, and medical equipment without worrying about voltage spikes damaging circuitry. Conventional generators simply cannot match that level of power cleanliness.
The fuel savings are real. Inverter technology matches engine speed to the power demand, so if you are only running a few lights and a refrigerator, the engine slows down and burns significantly less fuel. Westinghouse claims up to 50% fuel savings compared to traditional generators, and our testing of similar inverter models confirms meaningful reductions at partial loads.
At 64 dBA, this generator is remarkably quiet for its size. That is roughly the volume of normal conversation. Eco mode, insulation, and mufflers all work together to keep it neighborhood-friendly, which matters if you have close neighbors during an extended outage.
Best Use Case for the iGen12000DFc
If you want one generator that does it all, this is it. It has the wattage for home backup, the clean power for sensitive electronics, and the quietness for neighborhood use. RV owners with large rigs will also appreciate the 50A outlet and clean sine wave output.
Off-grid cabins and remote work sites benefit from the fuel efficiency, since hauling fuel to remote locations is expensive and inconvenient.
What to Watch Out For
Inverter generators at this wattage are not cheap. You are paying a premium for the technology, and that is reflected in the price. If you only need raw power and do not care about clean output or noise, a conventional generator will cost less.
At 187.4 pounds, it is lighter than the non-inverter Westinghouse models but still requires two people or a ramp to load into a vehicle. The flat-free tires help with positioning once it is on the ground.
5. Champion 4000-Watt Dual Fuel RV Ready Inverter Generator
Champion Power Equipment 4000-Watt Dual Fuel RV Ready Portable Inverter Generator with Quiet Technology and Free 3-Year Warranty
4000 Starting Watts Gas
3000 Running Watts
149cc Inverter
51.8 lbs
64 dBA
Pros
- Only 51.8 pounds lightweight
- Ultra quiet 64 dBA
- RV ready TT-30R outlet
- Up to 25 hours runtime on propane
- 3 year warranty with free tech support
Cons
- Ships within 1 to 3 weeks
- Lower wattage for smaller loads only
The Champion 4000-watt dual fuel inverter is the generator I recommend most often for RV owners and campers. At just 51.8 pounds, it is light enough for one person to load into a truck or RV compartment. Compare that to the 200+ pound units above, and you can see why this model wins on portability.
Champion packed a lot of smart features into this compact unit. The CO Shield carbon monoxide auto shutoff system is included as standard equipment, which is something I insist on for any generator used at campsites or near RVs. Cold start technology means it fires up reliably even in freezing temperatures, which matters for winter camping.
The noise level is where this generator really stands out. At 64 dBA from 23 feet, it is quiet enough that neighboring campers will not complain. That puts it in the same noise range as normal conversation, well below the 70+ dBA that conventional generators produce.
On propane, this Champion delivers 2,700 running watts and up to 25 hours of runtime. That is a full day of power on a single propane tank, which is outstanding for camping trips where refueling is inconvenient. On gasoline, you get 3,000 running watts and about 10 hours of runtime from the 1.54 gallon tank.
Best Use Case for the Champion 4000W
This is the sweet spot for RV camping, tailgating, and small cabin use. The TT-30R 30A RV outlet means you plug your RV directly in without adapters. The parallel kit option lets you connect two Champion inverters together for double the power if your needs grow.
Apartment dwellers and condo owners who need emergency backup for a fridge, lights, and phones during short outages also find this unit hits the right balance of power and portability.
What to Watch Out For
The delivery time can be 1 to 3 weeks, so plan ahead if you need it for an upcoming trip or storm season. At 3,000 running watts on gasoline, you cannot run an entire house on this unit. It is designed for smaller loads, so check your wattage requirements carefully.
Some buyers report that the propane hose connection can be finicky. Make sure you thread it carefully and check for leaks with soapy water before first use.
6. WEN DF475T 4750-Watt Dual Fuel Portable Generator
WEN 4,750-Watt 120V/240V Dual Fuel Portable Generator with Wheel Kit and Electric Start (DF475T)
4750 Surge Watts Gas
3800 Running Watts
224cc Engine
105.8 lbs
11hr Runtime
Pros
- Affordable price point
- Electric start with key
- 4 gallon tank with 11 hour runtime
- Transfer switch ready
- GFCI outlet protection
Cons
- 105.8 pounds moderately heavy
- Not smart home compatible
The WEN DF475T is proof that you do not need to spend a fortune to get a capable dual fuel generator. With 4,750 surge watts and 3,800 running watts on gasoline (4,350 surge and 3,500 running on propane), this unit handles essential household circuits without breaking the budget. It has earned a loyal following, with nearly 3,000 reviews and a solid 4.5-star rating.
I appreciate the simplicity of the fuel selector. Turn a dial to switch between gasoline and propane. No tools, no complicated procedure. The electric start works with a turn of a key, and WEN includes the battery so you can start using it right away.
The 4-gallon fuel tank delivers up to 11 hours of runtime at half load, which is impressive for a generator at this price point. On propane, runtime varies based on tank size but you get the benefit of clean-burning fuel that stores indefinitely.
WEN includes two GFCI outlets for safety, a NEMA 30A twist lock for higher-draw appliances, and a 12V DC outlet for battery charging. The 120V/240V capability means it is transfer switch ready, so you can connect it to your home panel for backup power.
Best Use Case for the WEN DF475T
This is one of the best dual fuel generators for budget-conscious buyers who need to power essentials during outages. It handles refrigerators, lights, fans, TVs, and small appliances without issue. Small to mid-size homes can keep critical circuits running on this unit.
Campers and tailgaters who want more wattage than a small inverter provides but do not want to spend inverter-level prices will find this model hits a nice middle ground.
What to Watch Out For
This is a conventional generator, not an inverter, so the power output has higher total harmonic distortion. I would not recommend running sensitive electronics like laptops directly without a surge protector or voltage regulator.
At 105.8 pounds, it is manageable with the included wheel kit but still requires some effort to move. The noise level is typical for a conventional generator at this wattage, so expect it to be noticeably louder than the inverter options on this list.
7. WEN DF680iX 6800-Watt Dual Fuel Inverter Generator
WEN 6800-Watt Dual Fuel RV-Ready Electric Start Portable Inverter Generator with Fuel Shut Off and CO Watchdog for Electric Vehicle Backup (DF680iX)
6800 Surge Watts Gas
5100 Rated Watts
224cc Inverter
99.2 lbs
CO Watchdog
Pros
- EV Level 2 charging capable
- CO Watchdog safety sensor
- Fuel shutoff for maintenance
- 8 power outlets including USB
- Telescoping handle and wheels
Cons
- Only 6 hour runtime
- Currently out of stock periodically
The WEN DF680iX stands out from every other generator on this list because of one unique feature: it can provide Level 2 EV charging. The bonded-neutral 240V output means electric vehicle owners can charge their cars during a power outage, which is a capability that very few portable generators offer.
As a dual fuel inverter, this WEN delivers 6,800 surge watts and 5,100 rated watts on gasoline, dropping to 6,000 surge and 4,500 rated watts on propane. The inverter technology means clean power suitable for laptops, phones, and other sensitive electronics. Eight total outlets give you plenty of connectivity options including USB ports for device charging.
The CO Watchdog sensor is WEN’s take on carbon monoxide protection, and it works similarly to other brand systems. It monitors CO levels and shuts the generator down automatically if dangerous concentrations are detected. The fuel shutoff feature is a nice touch for maintenance, running the carburetor dry to prevent gum and varnish buildup during storage.
At 99.2 pounds with a telescoping handle and onboard wheels, this is one of the more portable generators in the mid-range wattage category. The 3-year warranty provides decent coverage for peace of mind.
Best Use Case for the DF680iX
EV owners who want backup charging capability will find this uniquely suited to their needs. No other generator on this list explicitly supports Level 2 EV charging, which makes the DF680iX a standout for electric vehicle households.
RV owners and campers who want inverter-clean power with more wattage than the Champion 4000W will also appreciate this model. The RV-ready design and telescoping handle make it travel-friendly.
What to Watch Out For
The 6-hour runtime on a 2.9 gallon tank is shorter than most competitors. You will need to refuel more frequently, especially at higher loads. Consider keeping extra fuel on hand for extended outages.
Stock availability has been inconsistent, with the generator periodically showing as temporarily out of stock. If you find it available, I recommend acting quickly rather than waiting for a better deal.
8. Pulsar PG2200BiS 2200W Portable Dual Fuel Quiet Inverter Generator
Pulsar 2,200W Portable Dual Fuel Quiet Inverter Generator with USB Outlet & Parallel Capability, CARB Compliant, PG2200BiS
2200 Peak Watts Gas
1800 Running Watts
80cc Inverter
44 lbs
60 dB
Pros
- Only 44 pounds super portable
- Whisper quiet at 60 dB
- Parallel capability for expandable power
- Stable sine wave for electronics
- Compact carrying case included
Cons
- Lower wattage limited loads
- Only 8 hour runtime on gasoline
The Pulsar PG2200BiS is the lightest and quietest generator on this list, and for many buyers, that is exactly what matters most. At 44 pounds, you can carry it with one hand. At 60 dB, it is quieter than most air conditioners. For camping, tailgating, and light-duty emergency power, this little inverter punches well above its weight class.
With 2,200 peak watts on gasoline and 2,000 peak on propane, this generator will not run your entire house. What it will do is keep your fridge cold, your phones charged, your lights on, and your camping setup comfortable. The inverter technology produces a stable sine wave that is safe for laptops, cameras, CPAP machines, and other sensitive gear.
The parallel capability is a feature I wish more buyers knew about. If you buy two PG2200BiS units and connect them with a parallel kit, you double your output to 4,400 watts. That flexibility lets you start with one generator and expand later if your power needs grow.
The included carrying case is a thoughtful addition that makes transport and storage much easier. The 1.18 gallon fuel tank provides up to 8 hours of runtime on gasoline, which is reasonable for a generator this size.
Best Use Case for the PG2200BiS
This is one of the best dual fuel generators for camping, outdoor events, and light emergency backup. Tent campers and small RV owners will love the quiet operation and easy portability. It is also a solid choice for apartment dwellers who just need to keep a fridge and some devices running during short outages.
DIY enthusiasts who need clean power for tools in remote locations find this unit handy. The stable output protects expensive power tools from voltage damage.
What to Watch Out For
At 1,800 running watts on gasoline, you are limited in what you can power simultaneously. A refrigerator, some lights, and a phone charger are fine. A window AC unit or space heater will push the limits. Check your appliance wattage carefully before buying.
Stock tends to run low on this model. When it is available, the price is excellent for a dual fuel inverter, so it sells quickly. The 44-pound weight limit means internal components are smaller, so expect shorter overall lifespan compared to heavier-duty units.
9. Westinghouse iGen5000DF 5000W Super Quiet Dual Fuel Inverter Generator
Westinghouse 5000 Peak Watt Super Quiet Dual Fuel Portable Inverter Generator, Remote Electric Start, Gas & Propane Powered, RV Ready 30A Outlet, Parallel Capable, Blue/Black
5000 Peak Watts Gas
3900 Running Watts
4 Stroke Engine
104.7 lbs
52 dBA
Pros
- Incredibly quiet at 52 dBA
- 18 hour runtime
- Remote start with key fob
- RV ready 30A outlet
- Less than 3 percent THD clean power
Cons
- Not Prime eligible
- Not smart home compatible
The Westinghouse iGen5000DF is the quietest generator on this entire list at just 52 dBA. To put that in perspective, that is quieter than a normal conversation and about the same volume as a running refrigerator. If noise is your top concern, whether for camping, neighborhood etiquette, or late-night power outages, this is the generator I would choose.
With 5,000 peak watts and 3,900 running watts on gasoline, this inverter hits a sweet spot for RV owners and homeowners who need more power than a small unit but want inverter-clean electricity. The less than 3% THD rating means you can safely charge laptops, run medical devices like CPAP machines, and power any sensitive electronic equipment.
The remote start with key fob is a feature borrowed from Westinghouse’s larger generators. Start the generator from up to 109 feet away, which means you can fire it up from inside your RV or home without stepping outside. Economy mode adjusts engine speed to match the load, stretching fuel efficiency even further.
The 3.4 gallon fuel tank delivers up to 18 hours of runtime, which is exceptional for a generator at this wattage level. The LED data center displays fuel level, power output, remaining runtime, voltage output, and lifetime hours so you always know exactly what is happening.
Best Use Case for the iGen5000DF
RV owners who want quiet, clean power with enough wattage to run an air conditioner will find this ideal. The TT-30R 30A RV outlet is purpose-built for RV connection. Campers who value peace and quiet above all else will appreciate the 52 dBA noise rating.
Homeowners who want to run essential circuits without disturbing neighbors during overnight outages also benefit from the super-quiet operation. The remote start makes it convenient for 2 AM power failures.
What to Watch Out For
This model is not Prime eligible, so shipping times may be longer than Amazon Prime customers are used to. Plan accordingly if you need it quickly.
At 104.7 pounds, it is lighter than the big home backup units but still requires effort to move. The parallel capability lets you connect two iGen5000DF units for nearly 10,000 watts of combined clean power, but that requires purchasing a second generator and parallel kit.
10. DuroStar DS13000MX 13000W Dual Fuel Portable Generator
DuroStar DS13000MX 13,000-Watt 500cc Dual Fuel Portable Generator – Gas and Propane, Remote Electric Start, Whole Home Power Backup, Transfer Switch Ready, RV & Emergency Ready
13000 Peak Watts Gas
10500 Running Watts
500cc Engine
220 lbs
17hr Runtime
Pros
- 13000 watts whole home backup
- CO Alert safety detection
- 50 amp transfer switch outlet
- 17 hour runtime
- Remote electric start
Cons
- 220 pounds very heavy
- Not Prime eligible
The DuroStar DS13000MX is the sibling of the DuroMax XP13000EH, sharing the same 500cc engine and 13,000-watt output but with some differences that make it worth comparing. With 10,500 running watts and 13,000 starting watts, this generator has the capacity to run an entire home during an extended outage.
The 8.3 gallon fuel tank is larger than what many competitors offer, and it delivers up to 17 hours of runtime at 50% load. That means fewer refueling trips in the middle of the night during a storm. The push-button electric start and remote control capability add convenience that you will appreciate every time the power goes out.
DuroStar includes a CO Alert system that detects dangerous carbon monoxide levels and shuts the engine down automatically. The 50-amp outlet makes this transfer switch ready, so you can connect it to your home panel safely and legally. The heavy-duty steel frame is built to withstand years of use and abuse.
With an 84% five-star rating from early buyers, this newer model is building a strong reputation. The combination of high output, long runtime, and safety features makes it a compelling option for serious home backup.
Best Use Case for the DS13000MX
This is purpose-built for whole-home backup power. If you have a 2,500+ square foot home with central air, electric water heater, and standard appliance loads, the DS13000MX can handle it. The 50A outlet and transfer switch ready design make professional installation straightforward.
People in hurricane zones, tornado alleys, and areas with unreliable grid power find this unit provides the runtime and wattage needed for multi-day outages without constant refueling.
What to Watch Out For
At 220 pounds, plan for two people and a clear path to wherever you will position it. Once in place, it stays put. The unit is not Prime eligible, so factor in shipping time when ordering before storm season.
As a newer model with fewer reviews than some established competitors, long-term reliability data is still building. However, the DuroStar brand shares engineering with DuroMax, which has a solid track record in the dual fuel generator space.
How to Choose the Best Dual Fuel Generator for Your Needs
Choosing from the best dual fuel generators comes down to understanding your power needs, fuel preferences, noise tolerance, and budget. Let me walk you through the key decisions.
Running Watts vs Starting Watts Explained
This is the single most common source of confusion I see among generator buyers. Starting watts (also called surge or peak watts) is the extra burst of power needed to start motor-driven appliances like refrigerators, air conditioners, and well pumps. Running watts (also called rated watts) is the continuous power the generator can deliver once everything is running.
For example, a refrigerator might need 2,200 starting watts but only 700 running watts. You need a generator that can handle the surge of all your appliances starting up, not just their running wattage. Always add up the starting watts of your largest motor-driven appliance plus the running watts of everything else.
On propane, expect a 10% reduction in both starting and running watts compared to gasoline. Plan accordingly when sizing your generator.
Propane vs Gasoline: Real Performance Differences
Gasoline produces slightly more wattage, typically about 10% more than propane on the same generator. It is also easier to find during normal times. However, gasoline degrades within 3 to 6 months unless treated with stabilizer, and ethanol blends can gum up carburetors during long storage.
Propane is where dual fuel generators really earn their keep. Propane stores indefinitely without degrading. A 20-pound propane tank sitting in your garage for 5 years will still work perfectly when you need it. Propane also burns cleaner, produces less carbon buildup in the engine, and extends maintenance intervals.
For emergency preparedness, I recommend keeping at least one full propane tank dedicated to your generator. That way, even if your gasoline has gone stale, you have reliable fuel ready to go.
Noise Levels and Why They Matter
Generator noise is measured in decibels (dBA), and the difference between a quiet and loud generator is significant. Conventional generators typically run at 70 to 80 dBA, which is loud enough to be annoying to neighbors and disruptive at campsites. Inverter generators are much quieter, ranging from 52 to 64 dBA.
Many campgrounds have noise ordinances that prohibit generators above certain decibel levels. If you plan to use your generator for RV camping or tailgating, look for inverter models rated at 60 dBA or below. The Pulsar PG2200BiS at 60 dB and the Westinghouse iGen5000DF at 52 dBA are the quietest options on this list.
For home backup, noise matters less during the day but can be very disruptive at night. If you have close neighbors, consider an inverter generator or position your conventional generator as far from sleeping areas as possible.
CO Safety Features You Should Not Skip
Carbon monoxide poisoning is a serious risk with any fuel-powered generator. Never operate a generator indoors, in a garage, or near open windows. Modern generators increasingly include CO sensors that detect dangerous levels and shut the engine down automatically.
Of the 10 generators on this list, several include built-in CO detection: the Westinghouse WGen11500DFc, iGen12000DFc, DuroMax XP13000EH, Champion 4000W, WEN DF680iX, and DuroStar DS13000MX all have CO safety systems. I consider this a must-have feature for any generator that will be used near living spaces.
Even with a CO sensor, always operate your generator outdoors at least 20 feet from your home with the exhaust pointed away from doors and windows. Install battery-powered CO detectors in your home as an additional safety layer.
Sizing Guide: How Many Watts Do You Need
Here is a practical breakdown based on common use cases to help you choose the right wattage from our list of the best dual fuel generators.
For camping and tailgating (500 to 2,500 watts): The Pulsar PG2200BiS is ideal. It is lightweight, quiet, and has enough power for lights, fans, phone charging, and small appliances.
For RV use (3,000 to 5,000 watts): The Champion 4000W or Westinghouse iGen5000DF are excellent choices. Both include RV-ready outlets and quiet inverter operation.
For essential home backup (5,000 to 8,000 watts): The WEN DF475T, WEN DF680iX, or Westinghouse iGen12000DFc can keep your refrigerator, lights, furnace blower, and electronics running during outages.
For whole-home backup (10,000+ watts): The Westinghouse WGen9500DF, WGen11500DFc, DuroMax XP13000EH, and DuroStar DS13000MX have the muscle to power nearly everything in a typical home simultaneously.
Frequently Asked Questions
What is the best brand of dual fuel generator?
Based on our testing and analysis, Westinghouse and DuroMax are the top brands for dual fuel generators. Westinghouse offers the widest range of options from compact inverters to whole-home backup units, with consistently high ratings and excellent warranty coverage. DuroMax is known for heavy-duty all-metal construction and copper windings that extend engine life. Champion is the best value brand, particularly for RV and camping use.
Are dual fuel generators worth it?
Yes, dual fuel generators are absolutely worth it for most buyers. The ability to run on propane means you have a fuel source that stores indefinitely without degrading, which is critical for emergency preparedness. Gasoline goes bad within 3 to 6 months, but propane lasts for years. The flexibility to switch fuels also means you are never stuck if one fuel type is unavailable during a crisis.
What is the most reliable generator brand?
Westinghouse, DuroMax, and Champion are consistently rated as the most reliable generator brands by both consumers and industry experts. Westinghouse stands out for customer service and warranty support. DuroMax earns high marks for durability with all-metal frames and copper windings. Champion is praised for value and long-term reliability, backed by free lifetime technical support.
Which is better, Generac or DuroMax?
Both brands are excellent but serve slightly different markets. Generac is better known for permanently installed standby generators with automatic transfer switches. DuroMax specializes in portable dual fuel generators that you can move and use anywhere. If you want a portable dual fuel unit, DuroMax is generally the better choice. For whole-house automatic standby power, Generac is the industry leader.
How long can a dual fuel generator run on propane?
Runtime on propane depends on the generator size and load. A 20-pound propane tank typically provides 5 to 8 hours of runtime at 50% load for a mid-size generator. Smaller inverter generators like the Champion 4000W can run up to 25 hours on propane at lighter loads. Propane burns cleaner than gasoline, which means less maintenance and longer engine life over time.
Final Thoughts on the Best Dual Fuel Generators in 2026
Finding the best dual fuel generators means matching wattage, noise level, and features to your specific situation. For whole-home backup, the Westinghouse WGen9500DF and WGen11500DFc are hard to beat. For RV and camping use, the Champion 4000W and Westinghouse iGen5000DF deliver quiet, clean power at the right size. On a budget, the WEN DF475T and Pulsar PG2200BiS offer tremendous value without sacrificing dual fuel capability.
Whatever you choose, the dual fuel advantage is clear: propane stores indefinitely, gasoline is readily available, and having both options means you are prepared for any situation. Invest in a quality generator now, maintain it properly, and it will serve you for years of power outages, camping trips, and job site work.