A power outage does not wait for the nearest station to have your preferred fuel. The best dual fuel generators solve that problem by running on gasoline or propane, so you can keep a refrigerator, lights, phone charger, or essential circuits operating when one fuel is unavailable.
I compared eight current models for home backup, RV trips, job sites, and camping. I looked beyond the headline wattage to check running watts, propane output, runtime, weight, outlets, CO protection, and the practical details reviewers repeatedly mention, such as a missing oil funnel, a hard-to-move frame, or a battery that eventually needs replacement.
The strongest overall choice is the Westinghouse WGen9500DF because it combines 9,500 running watts, remote start, transfer-switch readiness, and a 12-hour gasoline runtime. The DuroMax XP13000EH is the better fit for whole-home power, while the WEN DF475T makes dual-fuel capability affordable for smaller backup jobs.
Table of Contents
Top 3 Picks for Best Dual Fuel Generators
Best Dual Fuel Generators in 2026
| Product | Specifications | Action |
|---|---|---|
 Westinghouse WGen9500DF |
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 Westinghouse WGen5300DFcv |
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 DuroMax XP13000EH |
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 WEN DF475T |
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 WEN DF680iX |
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 DuroStar DS13000MX |
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 PowerSmart 3800W Inverter |
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 Champion 4250W Inverter |
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1. Westinghouse WGen9500DF: Best Overall for Flexible Home Backup
Westinghouse 12500 Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered
9500 running watts
12,500 peak
12-hour runtime
Remote start
Pros
- Dual fuel flexibility
- Transfer-switch ready
- Remote start
Cons
- 210-pound weight
- Oil ships drained
I would use the WGen9500DF as the first pick for a household that wants one generator to cover essentials and larger appliances. It supplies 9,500 running watts on gasoline and 8,500 on propane, with 12,500 and 11,200 peak watts respectively.
Its 6.6-gallon tank is rated for up to 12 hours, and the engine includes a cast-iron sleeve, automatic low-oil shutdown, and a VFT display for voltage, frequency, and lifetime hours. The remote key fob is useful when the unit sits outside in bad weather, while the L14-30R transfer-switch outlet and RV-ready 14-50R receptacle broaden its roles.
The main compromise is weight. At 210 pounds, it is not a one-person carry, so I would plan to use the wheel kit and keep it on a level, stable surface. Buyers also need to add oil before the first start because the oil is shipped drained, even though the package includes the oil and funnel.
For whom it is good
Choose it for a medium-to-large home, an RV with a 50-amp connection, or a property where a transfer switch and remote start are worth more than compact storage. It is a better balance of output and convenience than a small open-frame unit.
For whom it is bad
Skip it if you need a quiet generator for a tent, a light model you can lift alone, or a unit for only a few small electronics. Its open-frame design and 12-hour gasoline rating point toward emergency and work-site duty rather than quiet campground use.
2. Westinghouse WGen5300DFcv: Best for Moderate Backup and RV Use
Westinghouse 6500 Watt Dual Fuel Home Backup Portable Generator, Transfer Switch Ready 30A Outlet, RV Ready 30A Outlet, CO Sensor
5300 running watts
6500 peak
CO sensor
14.5-hour runtime
Pros
- CO shutdown
- Transfer-switch ready
- Compact footprint
Cons
- Fuel gauge concerns
- No hour meter
The WGen5300DFcv is the smaller Westinghouse option I would recommend when 5,300 running watts on gasoline is enough. It also produces 4,800 running watts and 5,800 peak watts on propane, which makes it a practical dual fuel portable generator for an RV or a few priority home circuits.
The 4.7-gallon tank is listed for up to 14.5 hours, and the frame is easier to store than the 9,500-watt model. A 30A RV outlet, 30A transfer-switch outlet, household duplex receptacle, automatic low-oil shutdown, and carbon-monoxide shutdown cover the basics without a complicated control panel.
Reviewers like the solid construction and straightforward setup. I would not treat the fuel gauge as perfectly precise, and I would buy a separate hour meter if maintenance tracking matters to you because one is not included.
For whom it is good
This is a sensible match for a small RV, cabin, or household that needs refrigerator, lights, a fan, and electronics rather than central air conditioning. The CO sensor is especially useful for buyers who value a second layer of protection.
For whom it is bad
Do not choose it for a large central AC system, electric range, or whole-house panel without calculating the surge load. At 135.6 pounds, it is also less convenient than a compact inverter, although the wheel kit helps.
3. DuroMax XP13000EH: Best for Whole-Home Power
DuroMax XP13000EH 13,000-Watt Dual Fuel Portable Generator – Gas & Propane, Electric Start, Whole Home Backup Power, Transfer Switch Ready, RV & Emergency Ready
10500 running watts
13000 peak
50-amp outlet
Electric start
Pros
- Heavy-duty metal frame
- Copper windings
- High power
Cons
- 234-pound weight
- Open-frame noise
If the goal is to keep more of a home operating during an outage, the DuroMax XP13000EH is the clear heavy-duty pick. It provides 10,500 running watts and 13,000 starting watts, with a transfer-switch-ready 50-amp outlet and a 500cc engine.
The fuel selector and push-button electric start make switching between gasoline and propane simple. The all-metal frame and copper windings suit demanding use, and users frequently report that the unit can handle major household loads, including HVAC equipment.
That power comes with tradeoffs. At 234 pounds, it is difficult to move without help, and the open-frame design is loud under load. I would also plan the fuel transition carefully, because some users report gasoline starting problems after running on propane; use the manufacturer procedure rather than assuming the selector handles every state.
For whom it is good
Choose the XP13000EH for a large home, a job site with high-demand tools, or a family that wants the widest appliance coverage in this list. It is a better home-backup machine than a portable camping inverter because surge capacity and 50-amp output matter more here than noise.
For whom it is bad
It is a poor fit for quiet neighborhoods, small RVs with limited storage, or buyers who cannot manage 234 pounds. If low noise and easy lifting are higher priorities than whole-home capacity, look at the WEN DF680iX or Champion 4250W instead.
4. WEN DF475T: Best Budget Dual Fuel Portable Generator
WEN 4,750-Watt 120V/240V Dual Fuel Portable Generator with Wheel Kit and Electric Start (DF475T)
3800 running watts
4750 peak
120/240V
Electric start
Pros
- Budget-friendly
- Transfer-switch compatible
- Compact frame
Cons
- No hour meter
- Oil funnel is short
The DF475T is the value choice for someone who needs dependable basics without paying for a large open-frame system. It offers 3,800 running watts on gasoline and 3,500 on propane, plus 4,750 and 4,350 peak watts respectively.
I like the combination of a 4-gallon tank, electric start, 120V/240V output, and a wheel kit. Two GFCI household outlets, a 30A twist-lock outlet, and a 12V plug make it useful for a transfer switch, small RV, tools, lights, and essential appliances.
The compromises are familiar in a budget model. The battery is proprietary and may eventually need replacement, the oil funnel is short, and there is no hour meter. I would learn the recoil-start method before an outage, since a dead battery should not become the only way to start the engine.
For whom it is good
It suits a first-time buyer, a small cabin, or a household that wants 120/240V flexibility at a lower cost. It can power many essentials, but I would avoid a central air conditioner or electric dryer unless the appliance ratings fit its surge limit.
For whom it is bad
Choose a different model if you need built-in runtime tracking, a very easy oil-change setup, or a generator that one person can move quickly. It is also not the right choice for sensitive electronics unless you add proper surge protection or use an inverter model.
5. WEN DF680iX: Best for Quiet RV Power and EV Backup
WEN 6800-Watt Dual Fuel RV-Ready Electric Start Portable Inverter Generator with Fuel Shut Off and CO Watchdog for Electric Vehicle Backup (DF680iX)
5100 rated watts
6800 peak
CO Watchdog
Eco mode
Pros
- Inverter power
- CO shutdown
- Low-load efficiency
Cons
- Dipstick lacks magnetic tip
- Heavy-load noise
The DF680iX is the most versatile mid-size inverter in this group. It produces 6,800 surge watts and 5,100 rated watts on gasoline, or 6,000 surge and 4,500 rated watts on propane, while its bonded-neutral 240V setup supports low-power Level 2 charging for some electric and hybrid vehicles.
At 99.2 pounds, it is much easier to manage than a 200-plus-pound open-frame generator, and the telescoping handle, wheels, USB ports, RV receptacle, and 120/240V outlet make it a strong travel companion. WEN’s CO Watchdog and fuel shutoff add practical safety and storage support.
Eco mode helps when the load is light, but open-frame inverter generators can still get loud under a heavy draw. The oil dipstick lacks a magnetic tip, and the side battery-disconnect placement is less convenient than a front control, neither of which changes the core recommendation for RV users.
For whom it is good
It is a good match for RV owners, campers, and people who want cleaner inverter power for electronics. It is also the model I would investigate first for an EV emergency plan, provided the vehicle maker’s charging requirements and grounding instructions are followed.
For whom it is bad
Do not buy it expecting silent operation at full load or a 50-amp RV connection. It is also not designed to replace a transfer-switch-ready 13,000-watt unit for a large home with central air, electric heat, and multiple major appliances.
6. DuroStar DS13000MX: Best Rugged 13,000-Watt Option
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
10500 running watts
13000 peak
CO Alert
Remote start
Pros
- Transfer-switch ready
- All-metal construction
- Remote start
Cons
- 220-pound weight
- Loud operation
The DuroStar DS13000MX is the other 13,000-watt model in this guide, and it stands out for a remote-control start, CO Alert, transfer-switch-ready 50-amp outlet, and an all-metal construction. Its 8.3-gallon tank and 17-hour runtime specification make it attractive for extended outages.
The tradeoff is that a 220-pound generator is not easy to reposition, and its open-frame design will not be quiet in a residential setting. The product listing describes a 3-year limited factory warranty, but I would confirm current terms and service availability before relying on it as the sole backup plan.
For a homeowner with a permanent outdoor location and a transfer switch, that is a reasonable compromise. I would still keep the engine maintained, test it under a safe load before storm season, and store gasoline in a way that limits ethanol-related fuel-system problems.
For whom it is good
Choose it when you want high power, a 50-amp home connection, and a remote start without moving to the largest frame. It is also suitable for serious residential or commercial backup where a wheel-and-handle kit is available.
For whom it is bad
It is not a good camping generator, and it is not a quiet choice for an apartment patio or a densely packed campground. If portability is a daily requirement, choose a lighter inverter and accept lower starting capacity.
7. PowerSmart 3800W Inverter: Best Lightweight and Quiet Option
PowerSmart 3800 Watt Dual Fuel Inverter Generator for Camping or Home Use
3300 running watts
3800 peak
59 dBA
50.7 pounds
Pros
- Quiet operation
- Lightweight frame
- CO protection
Cons
- Lower propane power
- Oil not included
The PowerSmart is the easiest model here to carry and the quietest listed, at 50.7 pounds and 59 dBA in Eco Mode. It gives you 3,300 running watts and 3,800 starting watts on gasoline, with 3,100 running and 3,500 starting watts on propane.
I would reach for it for camping, tailgating, or a small home load where low weight matters more than a 50-amp outlet. The CO sensor, cold-start technology, low-oil shutdown, overload protection, USB ports, and digital display are useful features for a compact unit.
Propane output is lower, and the listing says oil is not included, so I would add oil before the first use. The listed runtime is 8 hours at 25% load on a 1.3-gallon gasoline tank or up to 24 hours with a 20-pound propane tank; treat those figures as controlled specifications, not promises for every load.
For whom it is good
It is best for a camper, tailgater, or prepper who wants a quiet dual fuel inverter that one person can move. It is also a sensible emergency option for charging phones, running a small refrigerator, and keeping lights on.
For whom it is bad
Do not expect it to start a central AC compressor, power a whole-house electric range, or support a 240V transfer switch. Its advantage is manageable size and noise, not maximum output.
8. Champion 4250W Dual Fuel Inverter: Best Quiet RV and Home Hybrid
Champion Power Equipment 4250-Watt Dual Fuel RV Ready Portable Open Frame Inverter Generator with Quiet Technology
3500 running watts
4250 peak
64 dBA
Parallel ready
Pros
- Quiet Technology
- Economy mode
- Parallel ready
Cons
- 79-pound weight
- No primer button
The Champion 4250W is a strong middle ground when you want more output than the PowerSmart but still prefer an inverter’s quieter operation. It supplies 3,500 running watts and 4,250 starting watts, with a listed 64 dBA noise level and up to 22 hours of runtime.
Gasoline or propane operation, a 120V 30A RV outlet, two household outlets, economy mode, and parallel-ready ports make it flexible. The open-frame digital-hybrid design is lighter than a conventional 3,500-watt unit, according to Champion, but at 79 pounds I would still consider a wheel kit.
Some reviewers mention the lack of a primer button on the propane regulator, so cold starts deserve a little patience. I would test the propane connection before an emergency and keep the battery, oil, and maintenance schedule in a written log.
For whom it is good
It fits an RV, cabin, or home backup plan that values quiet operation, propane storage, and the option to parallel two compatible units. Champion’s support and three-year limited warranty are meaningful trust signals for buyers who want accessible help.
For whom it is bad
It is not the best fit for a large household or anyone who needs a 50-amp transfer-switch connection. The 79-pound weight is manageable for two people but not ideal for someone who expects a one-handed carry.
How to Choose the Best Dual Fuel Generator for Your Needs
Start with running watts and starting watts, not the largest number on the box.
Running watts describe the power available continuously, while starting watts cover the brief surge created by motors such as refrigerators, well pumps, sump pumps, and air conditioners. Add the running watts of the devices you expect to operate at the same time, then add the largest starting surge rather than adding every surge together.
For a small essential load, 3,000 to 4,000 running watts may be enough. A medium household often needs 5,000 to 8,000 running watts, while central air, electric heat, or a large well pump may require a 10,000-watt-class model and a properly installed transfer switch.
I would also check whether your loads are 120V, 240V, or RV 30A. A model with a 120V/240V L14-30R outlet is different from a true 50-amp generator, and the outlet label must match the connection you plan to use.
Plan for the roughly 10% power loss common with propane.
Propane operation commonly reduces available power by about 10%, although the exact change depends on the model, temperature, regulator, and altitude. In this list, the WGen9500DF falls from 9,500 to 8,500 running watts on propane, while the DF680iX falls from 5,100 to 4,500 rated watts.
Propane stores for much longer than gasoline and avoids some ethanol-related storage problems, but gasoline usually gives higher output and can be more practical when a storm interrupts delivery. Gasoline can go stale and attract moisture, so I would use fresh fuel, stabilize it when appropriate, and follow the manual’s storage procedure.
Use runtime as a load-specific estimate, not a guaranteed number.
Manufacturer runtime figures usually assume a particular load, often around 25% or half load. A generator that runs for 12 hours at a light load may run much shorter when a refrigerator, pump, and several lights start together.
For an outage, I would list the appliances I truly need, estimate their draw from the nameplate, and choose a unit with some headroom. Keep spare fuel in approved containers, never near ignition sources indoors, and follow local fire-code and fuel-storage rules.
Match noise and portability to the job site.
Inverter generators are usually the better choice for camping, tailgating, and electronics because they regulate power more cleanly and often run more quietly. The PowerSmart at 59 dBA and Champion at 64 dBA are the two quietest models in this group, while the DuroMax and DuroStar open-frame units are built for higher power and more noise.
Weight matters only if you must move the unit. A 99-pound WEN can be manageable on its wheels, but a 210- to 234-pound Westinghouse or DuroMax deserves a permanent or semi-permanent location and a second person for setup.
Make CO safety and transfer-switch planning part of the purchase.
Never run a generator inside a home, garage, shed, basement, or enclosed porch. Place it outdoors in accordance with the manual, keep the exhaust away from doors and windows, and use a listed CO alarm in occupied spaces; the CO sensors on several models are protective features, not permission to use the generator indoors.
For a home, a transfer switch and a correctly rated inlet can make connection safer and easier than extension cords. Have a qualified electrician evaluate the panel, grounding, load, and local requirements, especially for 240V or 50-amp equipment.
Follow a simple break-in and maintenance routine.
Before relying on any unit, add the correct oil, check the air filter, inspect the fuel system, and run it under a safe load. During storage, close the fuel valve and use the fuel shutoff where available, then follow the manual’s carburetor and oil-storage instructions.
Keep a maintenance log with oil changes, spark-plug checks, run hours, and any recurring starting issue. A separate hour meter is inexpensive insurance if the generator lacks one, and it makes seasonal testing easier to track.
Frequently Asked Questions
What is the most reliable generator brand?
There is no single brand that is best for every buyer, but forum feedback frequently points to Champion for support, Westinghouse for value, WEN for quiet inverter power, and DuroMax for heavy-duty output. Reliability also depends on maintenance, fuel quality, altitude, load sizing, and whether the unit is protected from moisture.
Is a dual fuel generator a good idea?
Yes, when you want fuel flexibility. A dual fuel generator can use gasoline for higher output or propane for long storage, but it is heavier, may produce less power on propane, and still requires outdoor operation because of carbon monoxide risk.
Which 13,000 watt dual fuel generator is the best?
The DuroMax XP13000EH is the strongest 13,000-watt pick in this guide because it combines 10,500 running watts, electric start, a 50-amp transfer-switch-ready outlet, a metal frame, and copper windings. The DuroStar DS13000MX is a rugged alternative with CO Alert and remote start, but it is also very heavy.
Is it better to run a dual fuel generator on propane or gasoline?
Gasoline usually provides higher power, while propane stores for much longer and avoids gasoline degradation. Expect about 10% less output on propane in many models, so size the generator for the propane figures if that is your emergency fuel.
What is the disadvantage of a dual fuel generator?
The main disadvantages are added weight, lower propane output in many models, a more complicated fuel system, and the need to manage two fuel supplies correctly. It also does not make indoor operation safe; every generator still needs outdoor placement and CO protection.
What is the 20/20/20 rule for generators?
The 20/20/20 rule is commonly used as a practical sizing reminder: allow about 20 feet of distance from the home, keep the exhaust pointed away from openings, and wait at least 20 minutes after shutting the unit down before refueling. Always follow the specific generator manual and local fire-safety instructions.
Final Verdict on the Best Dual Fuel Generators
For most buyers, the Westinghouse WGen9500DF is the best balance of output, fuel flexibility, runtime, remote start, and home-backup connections. Choose the DuroMax XP13000EH when whole-home surge capacity is the priority, or choose the WEN DF475T when value and a smaller footprint matter more.
Before 2026 storm season, I would measure the appliances you need, decide whether propane is the emergency fuel, and run the chosen generator under a safe load. Keep it outdoors, maintain it on schedule, and buy only the power capacity and portability your household can actually use.