As an Amazon Associate I earn from qualifying purchases. This page may contain affiliate links.
A dual fuel generator propane model lets you run on gasoline or LP (propane) gas, so you are not stuck when one fuel runs short. For home backup, camping or job sites, that switch matters more than most spec-sheet numbers. This list compares nine dual fuel propane generators by the criteria that actually affect daily use: fuel flexibility, rated power and surge capacity, noise level in dBA, runtime per tank, outlet mix, and how easily the unit can be serviced. We also weighed brand reputation and the patterns owners tend to report, such as ease of starting, carburetor fuel-switch reliability and how well the engine holds up in cold weather. None of these picks were tested in our own lab; the information comes from manufacturer specifications and published owner feedback.
Our Top Picks
Quick Comparison
| Product | Best for | Key feature |
|---|---|---|
| Generac GP8000E Dual Fuel | Whole-home backup with a transfer switch | High rated wattage on both fuels |
| Champion 100293 Dual Fuel | Budget-minded home backup | Electric start with a wide fuel range |
| DuroMax XP13000EH | Heavy tools and well pumps | Dual fuel with electric start and high surge |
| Westinghouse WGen9500DF | Large households and RV use | Remote start and 9,500 starting watts |
| Champion 201cc Dual Fuel Inverter | Quiet camping and electronics | Inverter output with dual fuel |
| Generac GP5500 Dual Fuel | Mid-size backup for essentials | Established service network |
| DuroMax XP10000EH | Garage and workshop backup | Large tank with dual fuel switch |
| Champion 9500-Watt Dual Fuel RV Ready | RV and travel trailers | RV-ready outlets and transfer prep |
| Westinghouse iGen4500DF | Quiet dual fuel backup in a small footprint | Inverter-style output on both fuels |
Generac GP8000E Dual Fuel
This is a good fit for homeowners who want a larger dual fuel propane generator that can power key circuits during an outage. Its electric start and wide wattage range make it practical for buyers who plan to hook it to a transfer switch.
Key specs
- Dual fuel: gasoline or LP vapor
- Rated output in the high-7,000 watt range on propane
- Electric start
- Manufacturer-listed noise is in the mid-70s dBA at 23 feet
Pros
- Strong rated output for whole-house essentials
- Electric start simplifies outage response
- Widely available service support
Cons
- Heavy and not easy to move alone
- Noticeably louder than inverter models
Champion 100293 Dual Fuel
Buyers who want a practical dual fuel propane generator for occasional home backup, without paying for premium features, often look at this class of Champion unit. It suits a home that needs refrigeration, lights and a few outlets during short outages.
Key specs
- Dual fuel: gasoline or propane
- Electric start
- Mid-range rated wattage suitable for essential circuits
- Conventional (non-inverter) engine
Pros
- Practical budget pick for dual fuel
- Electric start with a simple control panel
- Propane operation avoids stale gasoline issues
Cons
- Conventional engine runs louder than inverter designs
- Output is not clean enough for sensitive electronics
DuroMax XP13000EH
This is aimed at users who run power tools, well pumps or air compressors and need surge capacity. Owners often mention its high starting wattage as the main reason they chose it.
Key specs
- Dual fuel: gasoline or LP
- Electric start
- Rated output in the low-10,000 watt range on gasoline, lower on propane
- Large fuel capacity for extended runs
Pros
- High surge for motor loads
- Electric start with dual fuel capability
- Good runtime on a full tank
Cons
- Rated output drops on propane, so check your load
- Heavy and loud under load
Westinghouse WGen9500DF
This is for larger households and RV owners who want remote start and high starting watts. It is a good match for people who want to run more appliances at once than a mid-size unit allows.
Key specs
- Dual fuel: gasoline or propane
- Rated around 9,500 starting watts and roughly 7,500 running watts on gasoline
- Electric start with remote start option
- Multiple 120V outlets and a 240V outlet
Pros
- High starting wattage for mixed loads
- Remote start is convenient for outages
- Good outlet variety
Cons
- Propane output is lower than gasoline output
- Large footprint and weight
Champion 201cc Dual Fuel Inverter
Campers and anyone powering laptops, phones or CPAP machines will find this type of inverter dual fuel propane generator more suitable than a conventional frame. Its output is cleaner, and its engine speed adjusts to load, which usually means less noise at light loads.
Key specs
- Dual fuel: gasoline or propane
- Inverter output with low total harmonic distortion
- Electric start
- Manufacturer-listed noise in the high-50s to low-60s dBA at quarter load
Pros
- Clean power for sensitive electronics
- Quieter at light loads than conventional units
- Compact enough for camping
Cons
- Lower maximum output than large frame generators
- Not suited to heavy motor starting
Generac GP5500 Dual Fuel
This is a solid mid-size pick for households that want to keep the refrigerator, furnace fan and some lighting running. Owners tend to value Generac’s service network as much as the specs.
Key specs
- Dual fuel: gasoline or LP vapor
- Rated around 5,500 running watts on gasoline
- Electric start
- Multiple 120V outlets
Pros
- Good balance of size and output
- Wide service and parts availability
- Electric start is convenient
Cons
- Propane output is noticeably lower than gasoline output
- Not a quiet model
DuroMax XP10000EH
For garages and workshops that need steady power for tools and lighting, this unit offers a large tank and a practical dual fuel switch. It suits buyers who expect longer runs between refuels.
Key specs
- Dual fuel: gasoline or LP
- Electric start
- Rated output in the 8,000 to 10,000 watt range depending on fuel
- Large fuel capacity
Pros
- Good runtime per tank
- Useful surge for workshop tools
- Clear control panel
Cons
- Heavy to move without a cart
- Louder than inverter alternatives
Champion 9500-Watt Dual Fuel RV Ready
RV owners and travel trailer users often look for this kind of unit because it is prepared for transfer-switch wiring and has outlets sized for camp use. It works well for extended trips where propane availability is a concern.
Key specs
- Dual fuel: gasoline or propane
- Rated around 9,500 starting watts
- Electric start
- RV-ready outlet configuration
Pros
- Practical for RV and trailer hookups
- Propane fuel avoids gasoline storage issues
- Strong output for air conditioners and appliances
Cons
- Heavy and loud compared with inverter RV generators
- Output drops on propane, so plan loads accordingly
Westinghouse iGen4500DF
This is for buyers who want a quieter dual fuel propane generator for a small footprint, such as a patio, deck or campsite. Its inverter design is the main reason owners cite lower noise and cleaner power.
Key specs
- Dual fuel: gasoline or propane
- Inverter output around 3,700 running watts on gasoline
- Electric start with remote start option
- Lightweight relative to frame generators
Pros
- Quieter operation with inverter output
- Compact and easier to move
- Remote start for convenience
Cons
- Lower total output than frame units
- Propane output is reduced compared with gasoline
Buying Guide
Choosing a dual fuel propane generator comes down to a few measurable factors. Start with how much power you actually need, then decide how much noise you can live with, and finally check the fuel and service details. For a deeper look at how noise is rated, see Generator Decibel Ratings Explained: What dBA Numbers Mean and How to Compare Generator Noise Ratings Fairly.
Selection criteria
Begin with a load list. Add the wattage of each device you plan to run at the same time, then add a margin for motor starting surges. Refrigerators, well pumps and air conditioners can draw several times their running wattage when they start. Compare the rated starting watts and running watts on the spec sheet, not just the largest number on the box.
Important features
- Fuel switching: Confirm whether the unit switches between gasoline and LP vapor by a valve or by a control, and whether you can run either fuel without changing parts.
- Electric start: Helpful for quick outage response, but check battery maintenance requirements.
- Inverter or conventional design: Inverter units usually run quieter and produce cleaner power for electronics. Conventional units often deliver more output for the money.
- Outlets: Count the 120V outlets and check for a 240V outlet if you plan to power larger loads.
- Runtime: Check the fuel tank size and the manufacturer’s runtime at quarter and half load.
Specs to check
| Spec | What to look for |
|---|---|
| Rated running watts (gasoline) | Use this as your baseline capacity |
| Rated running watts (propane) | Expect lower output; plan around this number |
| Starting watts | Must cover your largest motor load at startup |
| Noise (dBA at a stated distance) | Compare only figures measured at the same distance and load |
| Total harmonic distortion (THD) | Lower numbers mean cleaner power for electronics |
Choosing by need
Home backup for essentials: A mid-size dual fuel unit with electric start is usually enough. Look at the GP5500-class or GP8000E-class options.
Heavy motor loads: Prioritize starting watts and surge capacity, such as the XP13000EH-class units.
Camping and electronics: An inverter model keeps noise down and protects sensitive devices.
RV and travel: Pick a unit with RV-ready outlets and a clear plan for transfer wiring.
Things to watch out for
- Propane output is almost always lower than gasoline output. Size your generator for propane if you plan to run on it during outages.
- Never run any generator indoors, in a garage or near openings. Carbon monoxide can build up quickly.
- Store propane tanks outdoors and follow local codes for hose and regulator selection.
- Check that the generator is rated for the altitude where you will use it, since output drops at higher elevations.
For placement and exhaust guidance, see Where to Place a Generator for Less Noise and Safe Exhaust. If you are unsure about installing a transfer switch or wiring the unit to your home, consult a licensed electrician.
FAQ
Can a dual fuel propane generator run on both gasoline and propane?
Yes. A dual fuel generator is designed to run on either gasoline or LP vapor. You switch the fuel source, and the engine adjusts. Rated output is usually lower on propane, so check the manufacturer’s propane figure before you size the unit.
Is propane better than gasoline for a dual fuel generator?
Propane stores well for long periods and does not go stale the way gasoline can. Gasoline usually delivers higher rated output. Many owners keep both fuels available and choose based on what they have on hand during an outage.
How long will a dual fuel propane generator run on a tank?
Runtime depends on the tank size, the load and the fuel. Manufacturers list runtime at specific loads, often at quarter and half load. Use those figures as estimates and expect shorter runs at full load.
Do I need an inverter model for electronics?
Sensitive electronics such as laptops, phones and CPAP machines benefit from the cleaner output of an inverter design. Conventional generators can power many devices but may produce power quality that some electronics do not handle well.
How loud is a dual fuel propane generator?
Noise varies widely. Conventional frame units are typically louder than inverter units, and load changes the sound level. Compare manufacturer dBA figures only when they are measured at the same distance and load.
Can I connect a dual fuel generator to my house?
You can, but only with a properly installed transfer switch or interlock kit. Never backfeed a home through a regular outlet, as this can endanger utility workers. Consult a licensed electrician for installation.
What maintenance does a dual fuel generator need?
Check oil, air filter and spark plug on the schedule in the owner’s manual. Run the engine periodically and check the propane connections for leaks. For a general routine, see Generator Maintenance Basics: Oil, Air Filter, Spark Plug and Fuel.
Conclusion
A dual fuel generator propane model gives you a backup option that is not tied to a single fuel supply. For whole-house essentials, a mid-size unit such as the Generac GP5500 Dual Fuel or Generac GP8000E Dual Fuel is a practical starting point. Buyers with heavy motor loads should look at the DuroMax XP13000EH or Westinghouse WGen9500DF for surge capacity. Campers and anyone powering electronics will get better results from the Champion 201cc Dual Fuel Inverter or Westinghouse iGen4500DF. RV owners should consider the Champion 9500-Watt Dual Fuel RV Ready. Whatever you choose, size the unit for propane output, check the noise figures at matching distances, and follow safe placement and fuel-storage rules.
