7 Best Gas and Propane Generators (Researched and Compared)

We researched, compared, and evaluated the best gas and propane generators based on manufacturer specifications, published safety standards, and aggregated owner feedback. Dual fuel generators offer flexibility, allowing you to run on gasoline or propane depending on availability and storage needs. In our evaluation, we considered power output, runtime, noise levels, portability, and reliability. Below are our top picks, each with honest assessments of their strengths and limitations.

1. Champion Power Equipment 100519 6250W Dual Fuel Generator: Top Pick

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The Champion 100519 is a well-rounded dual fuel generator that we found to be a top performer in its class. It delivers ample power for RV use, home backup, or job sites, and the electric start with battery makes startup effortless. Owner feedback consistently praises its reliability and the convenience of switching between gasoline and propane without any adjustments. The cast iron sleeve and low oil shutoff contribute to its durability and safety.

However, this generator is quite heavy, and while it has wheels and a folding handle, moving it over rough terrain can be challenging. Additionally, some users report that the propane hose could be longer for easier tank placement. If you need a lighter unit for frequent transport, consider a smaller model. But for stationary backup or RV use, this is an excellent choice.

• Dual fuel capability: runs on gasoline or propane with included regulator hose
• Electric start with battery included and manual recoil backup
• Cast iron sleeve for extended engine life and low oil shutoff

Pros: Reliable starting and strong power output on both fuels; Good value for the features offered
Cons: Heavy at 120 pounds, not easily portable without wheels

2. DuroMax XP4850EH Dual Fuel Generator: Best Value

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The DuroMax XP4850EH is a budget-friendly dual fuel generator that offers good value for those who need occasional backup power. In our evaluation, it performed adequately on gasoline and propane, though the propane output is about 10% lower, which is typical for dual fuel models. The electric start works well, and the low oil sensor adds a safety layer. Owner feedback indicates it is reliable for powering refrigerators, lights, and small appliances during outages.

However, this generator is not the most powerful in its class, and the lower propane output means you lose some capacity when using the cleaner fuel. Also, some users note that the included battery may need charging before first use. If you need higher wattage for larger loads, consider stepping up to a more powerful model. For light to moderate backup needs, it is a solid choice.

• Dual fuel technology with simple fuel selector switch
• Electric start with battery and recoil backup
• Low oil sensor and automatic voltage regulation

Pros: Affordable price point for dual fuel capability; Compact design with decent power for essentials
Cons: Propane output is noticeably lower than gasoline; Some owners report minor assembly issues out of the box

3. Westinghouse WGen7500DF Dual Fuel Generator: Best Power

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The Westinghouse WGen7500DF is a powerhouse dual fuel generator that we found to be one of the most capable on the market. Its 7500W peak output on gasoline can handle well pumps, AC units, and multiple appliances simultaneously. The remote start with key fob is a standout feature, allowing you to start the generator from a distance. The CO sensor provides peace of mind by automatically shutting down the unit if carbon monoxide levels become unsafe.

On the downside, this generator is extremely heavy, and moving it around a yard or onto a trailer is a two-person job. Additionally, some owners report that the CO sensor may trigger false shutdowns in dusty or windy conditions. If you need a portable generator for camping or job sites, this may be too cumbersome. But for stationary home backup, it delivers exceptional power and reliability.

• Heavy-duty dual fuel engine with cast iron sleeve
• Electric start with remote key fob and recoil backup
• CO sensor and automatic shutdown for safety

Pros: High power output suitable for whole-house backup; Remote start feature is very convenient
Cons: Very heavy at 191 pounds, requires two people to move; CO sensor can be overly sensitive in some conditions

4. Generac 7676 GP6500 Dual Fuel Generator: Most Reliable

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• Generac OHV engine with splash lubrication for durability
• Dual fuel with easy changeover valve
• Runs up to 12 hours on propane at 50% load

Pros: Renowned reliability from a top brand; Long runtime on propane
Cons: Premium price for the power output; No electric start, only recoil

5. WEN 56475 Dual Fuel Generator: Best Portable

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• Compact and lightweight at 96 pounds with wheel kit
• Dual fuel with included propane hose
• Low oil sensor and overload protection

Pros: Easier to move than most dual fuel generators; Good power for its size
Cons: Propane output is significantly lower; Some users report voltage fluctuation under heavy load

6. Firman H03651 Dual Fuel Generator: Best for RV

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• RV ready with 30A outlet and parallel capability
• Dual fuel with fuel selector switch
• Electric start with battery and recoil backup

Pros: Quieter operation than many competitors; Parallel ready for increased power
Cons: Lower power output limits what you can run; Some reports of battery drain if not used regularly

7. Pulsar G12KBN Dual Fuel Generator: Heavy Duty

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• Very high power output for large loads
• Dual fuel with automatic transfer switch ready
• Electric start with battery and remote start

Pros: Massive power for whole-house backup; Remote start included
Cons: Extremely heavy and loud; Reliability concerns based on owner feedback

Frequently Asked Questions

Can I run a generator on propane indefinitely?

Yes, you can run a generator on propane indefinitely as long as you have a sufficient fuel supply. Propane does not degrade over time like gasoline, making it ideal for long-term storage and emergency use. However, you should still follow the manufacturer’s recommended maintenance schedule, including oil changes and spark plug replacement, to ensure longevity.

Is it safe to use a dual fuel generator indoors?

No, never operate any generator indoors, including dual fuel models. Generators produce carbon monoxide (CO) gas, which is odorless and deadly. Always place the generator outdoors in a well-ventilated area, at least 20 feet away from doors, windows, and vents. Some models have CO sensors that shut down the unit if CO levels rise, but that does not make indoor use safe.

What size dual fuel generator do I need for my house?

The size depends on the appliances you want to power. A 5000-7000 watt generator can run essential items like a refrigerator, lights, sump pump, and a window AC. For whole-house backup including a central AC, well pump, and electric oven, you may need 10000 watts or more. Calculate the starting watts of your largest appliance and add the running watts of all items you plan to run simultaneously.

How often should I change the oil in a dual fuel generator?

Most manufacturers recommend the first oil change after 20-30 hours of break-in, then every 100 hours or annually thereafter. Using propane can extend oil life because it burns cleaner than gasoline, but you should still follow the schedule. Check the owner’s manual for specific intervals, and always use the recommended oil viscosity.

Can I connect a dual fuel generator directly to my house panel?

Only if you have a properly installed transfer switch. Never plug a generator directly into a wall outlet or connect it to your home’s electrical panel without a transfer switch. This can backfeed power into the grid, endangering utility workers and violating electrical codes. A licensed electrician should install the transfer switch.

Our Verdict

After thorough research and comparison, our top pick is the Champion Power Equipment 100519 for its excellent balance of power, features, and value. For those who need maximum power, the Westinghouse WGen7500DF is the runner up, offering robust output and remote start. Choose based on your power needs and portability requirements.