The Best Dual Fuel Generators of 2026

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The best dual fuel generators let you run on gasoline or propane, so you can keep the fridge, furnace fan and sump pump going even when gas stations are closed after a storm. With winter outages and late-season storms ahead, we compared specs, expert testing and owner reviews to pick the dual fuel models worth buying in 2026, from 12,000-watt home backup units to a 46-pound inverter you can toss in the truck.

Part of our Home Comfort, Backup Power & Tool Guides.

Quick picks

Product	Best for	Price range
Westinghouse WGen9500DF	Best Overall	$$$	See price
DuroMax XP12000EH	Best for Whole-Home Backup	$$$	See price
Champion 7500-Watt Dual Fuel (100891)	Best Value	$$	See price
WEN DF1100T	Best Electric-Start Backup	$$	See price
Generac Tri-Fuel Portable Generator	Best Safety Features	$$$	See price
Westinghouse iGen4500DF	Best Quiet Inverter	$$$	See price
DuroMax DS5500EH	Best Budget	$$	See price
Pulsar 2200W Dual Fuel Inverter	Best Lightweight	$	See price

Price ranges: $ under $500 · $$ $500–$1,000 · $$$ $1,000–$1,500 · $$$$ $1,500+. Prices change often, so check the current price on Amazon.

1. Westinghouse WGen9500DF: Best Overall

The WGen9500DF is the all-rounder most homeowners should start with. It makes enough power on either fuel to run a refrigerator, freezer, well pump and lights together, it has a 50-amp outlet for a transfer switch or RV, and you can start it three different ways, including a key-fob remote so you don’t have to walk out into the rain.

Key specs

• Gasoline: 12,500 starting / 9,500 running watts
• Propane: 11,200 starting / 8,500 running watts
• Outlets: 120/240V 50A, 120/240V 30A locking, four 120V 20A GFCI
• Start: electric, remote and recoil
• Runtime: up to 12 hours on gas at 25% load (6.6-gal tank); about 7 hours on a 20-lb propane tank at 50% load
• Weight: about 211 lb

👍 Pros Small power drop when switching to propane Three start options, including remote Digital display shows voltage, frequency and runtime Long runtime on gasoline

👎 Cons Loud (about 89 dB measured at 6 feet in testing) Heavy and awkward to lift into a truck

What owners say: Buyers like how easily it starts and how much it powers during outages. Noise and weight are the most common complaints, so plan a permanent spot for it rather than moving it often.

Check price on Amazon →

2. DuroMax XP12000EH: Best for Whole-Home Backup

If you want to back up more of the house through a transfer switch, the XP12000EH gives you the most propane power on this list. It barely loses output on propane, it has an automatic carbon monoxide shutdown, and it comes with a wheel kit. Expert testers ran a refrigerator and window air conditioner on it without any lag.

Key specs

• Gasoline: 12,000 starting / 9,500 running watts
• Propane: 11,400 starting / 9,025 running watts
• Outlets: 120/240V 50A, 120/240V 30A locking, 120V 30A locking, two 120V 20A GFCI
• Automatic CO shutdown and low-oil shutdown
• Runtime: up to about 8 hours on gas at 50% load (8.3-gal tank)
• Weight: roughly 224–238 lb depending on source

👍 Pros Highest propane output in our picks CO-sensing safety shutdown Electric and pull start, wheel kit included Solid, heavy-duty build

👎 Cons Very heavy Only two standard household outlets No hour meter or outlet dust covers

What owners say: Owners praise the raw power and build quality for the money. The recurring complaints are the weight and mixed experiences with customer service.

Check price on Amazon →

3. Champion 7500-Watt Dual Fuel (100891): Best Value

Champion’s 7,500-watt dual fuel model is the sweet spot for essential-circuit backup. It often sells for under $1,000, has a 30-amp transfer-switch outlet, and its long gasoline runtime gets you through a night without refueling. Expert testers found it started on the first pull every time and handled saws and a compressor on a job site.

Key specs

• Gasoline: 9,375 starting / 7,500 running watts
• Propane: 8,400 starting / 6,750 running watts
• Outlets: 120/240V 30A locking (L14-30R), 120V 30A locking (L5-30R), two 120V 20A GFCI
• Start: electric plus recoil
• Runtime: up to 10 hours on gas at 50% load (7.7-gal tank); about 5.5 hours on a 20-lb propane tank
• Weight: about 205 lb; noise about 74 dB

👍 Pros Great output for the price Long runtime on gas Intelligauge display tracks voltage and hours Sturdy wheels

👎 Cons No 50A outlet Heavy, hard to roll on soft ground Too loud for most campgrounds

What owners say: Owners call it reliable and easy to start after storage. The main gripes are its bulk and the noise level.

Check price on Amazon →

4. WEN DF1100T: Best Electric-Start Backup

The WEN DF1100T delivers big-generator output, including a 50-amp outlet, usually for less than the Westinghouse. Expert testers ran a freezer, refrigerator, tankless water heater and power saws on both fuels without problems. If you will run it near the house, look for the version with a built-in CO shutdown sensor.

Key specs

• Gasoline: 11,000 starting / 8,300 running watts
• Propane: 9,500 starting / 7,500 running watts
• Outlets: 120/240V 50A, 120V 30A, four 120V 20A GFCI, 12V DC
• Electric start
• Runtime: up to 8.5 hours on gas at 50% load (6.6-gal tank)
• Weight: about 214 lb

👍 Pros Over 8,000 running watts on gas 50A outlet for a transfer switch or RV Easy fuel switching

👎 Cons Heavy Loud at full load Check the listing to confirm the CO-sensor version

What owners say: Reviewers say it handles major appliances well for the price. Weight and noise come up most often as downsides.

Check price on Amazon →

5. Generac Tri-Fuel Portable Generator: Best Safety Features

Generac’s tri-fuel portable adds natural gas to the usual gas and propane, picked with a single dial. It also uses Generac’s COsense technology, which shuts the engine down if carbon monoxide builds up, and covered outlets help in wet weather. It’s a good pick if you have a natural gas hookup and want the longest possible run during an extended outage.

Key specs

• About 12,500 starting / 9,500 running watts (gasoline)
• Fuels: gasoline, propane or natural gas
• COsense carbon monoxide detection and shutdown
• Electric start, covered outlets
• Runtime: up to 9.5 hours on gas at 50% load
• Weight: about 219 lb; 3-year warranty

👍 Pros Three fuel options Strong CO safety system Enough power for major appliances

👎 Cons Natural gas hookup may need a professional Loud Some reports of hard starting

What owners say: Owners describe it as dependable and quick to start, with enough power for big appliances. Noise and occasional starting trouble are the common complaints.

Check price on Amazon →

6. Westinghouse iGen4500DF: Best Quiet Inverter

Open-frame generators are loud and their power isn’t ideal for sensitive electronics. The iGen4500DF is an enclosed inverter that runs at about 52 dB, quiet enough for RV parks and close neighbors, while still handling a fridge, lights and devices. It’s the one to get if comfort matters as much as watts.

Key specs

• 4,500 starting / 3,700 running watts
• Dual fuel: gasoline or propane
• Electric start
• Noise: about 52 dB
• Fuel tank: 3.4 gal
• Weight: about 105 lb

👍 Pros Very quiet for its output Clean inverter power for electronics Solid construction

👎 Cons Pricey per watt Still heavy for a portable Not enough for whole-home backup

What owners say: RV owners and campers praise how quietly it runs. The common complaints are the price and the weight when lifting it.

Check price on Amazon →

7. DuroMax DS5500EH: Best Budget

The DS5500EH is a lot of generator for the money. It covers the essentials (refrigerator, a few circuits of lights, a sump pump, phone charging), it has electric and pull start, and it’s light enough at about 124 lb to move around with its wheels.

Key specs

• 5,500 starting / 4,500 running watts
• Dual fuel: gasoline or propane
• Start: electric and recoil
• Fuel tank: 3.9 gal
• Noise: about 69 dB
• Weight: about 124 lb, wheels included

👍 Pros Low price for a dual fuel unit Relatively portable Good build quality

👎 Cons Not enough power for a whole home Customer service gets mixed reviews

What owners say: Buyers like the value and easy starting. Most criticism is that it runs out of headroom once you add a well pump or central AC.

Check price on Amazon →

8. Pulsar 2200W Dual Fuel Inverter: Best Lightweight

At about 46.5 lb, the Pulsar 2200 is the one you can actually carry. It’s an inverter, so it’s fine for phones, laptops and a CPAP, and testers confirmed it delivered its rated 1,800 running watts. Think tailgates, camping and running a fridge for a few hours, not whole-home backup.

Key specs

• Gasoline: 2,200 starting / 1,800 running watts
• Propane: 2,000 starting / 1,600 running watts
• Outlets: two 120V 15A, one USB-A
• Recoil start
• Runtime: up to about 8 hours at light loads (1.18-gal tank)
• Weight: about 46.5 lb

👍 Pros Light and easy to carry Inverter power for electronics Quick setup, low price

👎 Cons Oil changes are awkward (side panel and tipping) Louder than some premium inverters Recoil start only

What owners say: Campers like the size and price. The usual complaints are the fiddly oil access and a few pulls needed to start.

Check price on Amazon →

How to choose a dual fuel generator

• Size it on propane, not gas: Every dual fuel generator makes less power on propane, often 5–10% less. Add up the running watts of what you need, plus the biggest starting surge, and compare that to the propane rating. Not sure? Use our power station and generator sizing calculator.
• Transfer-switch outlet: To power hardwired circuits like a furnace or well pump, you need a 30A (L14-30) or 50A outlet and a transfer switch or interlock installed by a licensed electrician. Never backfeed through a dryer outlet.
• CO safety shutdown: Models with a carbon monoxide sensor (like DuroMax’s CO shutdown or Generac’s COsense) turn the engine off if CO builds up. It’s a feature worth paying for.
• Inverter vs. open frame: Inverters are much quieter and better for electronics, but cost more per watt. Open-frame units give the most power for the money.
• Start type: Electric and remote start are easy in bad weather, but keep the battery charged. A recoil backup helps after long storage.
• Weight and runtime: Units over 7,500 watts usually weigh 200 lb or more. Propane runtime depends on tank size, so keep two or three 20-lb tanks on hand.

FAQ

Is a dual fuel generator worth it?

For home backup, usually yes. Propane stores for years without going stale, and you can buy it when gas stations are out of fuel. You can also switch to gasoline when you need the extra power.

Can a dual fuel generator run on natural gas?

Not unless it’s built for it. Standard dual fuel models run on gasoline and propane only. Tri-fuel models like the Generac above add natural gas, and the hookup may need a professional.

How far from the house should a generator be?

Never run a generator indoors, in a garage or under an open window. Safety guidance commonly calls for at least 20 feet from the home with the exhaust pointed away. Use battery CO alarms inside and always follow the manufacturer’s instructions.

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

For essentials such as a fridge, freezer, lights, furnace fan and sump pump, 5,000–7,500 running watts usually works. To add a well pump, window AC or more circuits, look at 9,000+ watts on propane and a 50A transfer switch.

Related guides

• The Best Portable Power Stations for Home Backup
• The Best Cordless Power Tool Combo Kits
• The Best Inverter Generators of 2026
• Home Comfort, Backup Power & Tool Guides
• The Best Home Standby Generators of 2026 for Whole-House Backup

Sources

We drew specs and testing notes from Bob Vila, Popular Science and This Old House, plus manufacturer specifications. Owner feedback is summarized in our own words from public reviews. Photos courtesy of Unsplash.