Best dual fuel generators (2026)

A dual fuel generator runs on gasoline or propane; a tri-fuel model adds natural gas. This page compares 42 of them, 10 tri-fuel, from 2,500-watt inverters to wheeled home backup units. Expect fewer watts on propane and fewer again on natural gas: each card gives the maker's figure for each fuel where the listing has it. Every figure is the maker's or the retailer listing's, read on the date in the card's notes, and we name the maker's carbon monoxide shutoff only where the listing for that model does. We haven't run these ourselves.

By Tom Calder · Updated November 8, 2026 · 42 products, 40 of 42 price-tracked

Dual fuel generators compared for US households

Our picks by size

Best dual fuel for home backup 4.3

Westinghouse WGen7500DFc

7,500 W · 9,500 W · Gasoline or propane · 202.1 lb · CO Sensor

Dual fuel 7,500-watt with L14-30R

ResearchedWhat it runs →

Check price →

Best small dual fuel 4.5

Photo: Amazon

Champion 2500W Dual Fuel

1,850 W · 2,500 W · Gasoline or propane · 43.2 lb

Runs on propane too

ResearchedRead our review →What it runs →

$575 at Amazon

as of Nov 8, 2026, 5:17 PM ET · Details

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.

In stock

Check price →

Best big dual fuel 5.0

Photo: Amazon

Westinghouse 12500W Dual Fuel

9,500 W · 12,500 W · Gasoline or propane · 212.1 lb · CO shutdown (maker)

Big home backup with remote start

ResearchedRead our review →What it runs →

$1,049 at Amazon

as of Nov 8, 2026, 5:17 PM ET · Details

In stock

Check price →

Not sure what size you need? Tick what you'd run and see the wattsOpen the calculator →

All 42 compared

Show

Generator	Running watts	Starting watts	Fuel	Weight	CO safety (maker's term)	Noise (as listed)	Price
1. Westinghouse 12500 Peak Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, CO Sensor Best big dual fuel 9,500 W · 12,500 W · Gasoline or propane · 212.1 lb · CO shutdown (maker) Big home backup with remote start 5.0	9,500 W	12,500 W	Gasoline or propane	212.1 lb	CO shutdown (maker)	—	$1,049 at Amazon as of Nov 8, 2026, 5:17 PM ET · Details Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product. In stockCheck price →
Our verdict Our verdictResearched 9,500 running watts on gasoline (8,500 on propane), a key-fob remote start, automatic CO shutdown, and both a 30-amp L14-30R and a 50-amp 14-50R outlet for a transfer switch. Best for Big home backup with remote start Good Automatic CO shutdown Remote start 30A and 50A outlets Worth knowing 212 lb Open frame: louder than an inverter Who shouldn't buy it: Don't buy it if you only need the refrigerator and a few lights: a 3,500-watt inverter covers that. Read the full review →What it runs →
2. Champion 2500-Watt Dual Fuel Inverter Generator Best small dual fuel 1,850 W · 2,500 W · Gasoline or propane · 43.2 lb Runs on propane too 4.5	1,850 W	2,500 W	Gasoline or propane	43.2 lb	—	—	$575 at Amazon as of Nov 8, 2026, 5:17 PM ET · Details Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product. In stockCheck price →
Our verdict Our verdictResearched A quiet inverter generator that also runs on propane, which stores far longer than gasoline and is easy to buy before a storm. Good value. Best for Runs on propane too Good Dual fuel: gasoline or propane Propane hose included Worth knowing Less output on propane than gasoline is typical Who shouldn't buy it: Don't buy it if you'll only ever use gasoline. Read the full review →What it runs →
3. Champion 4500-Watt Electric Start Dual Fuel Inverter Generator 3,500 W · 4,500 W · Gasoline or propane · 99.2 lb Running a fridge, furnace fan and lights at once 4.5	3,500 W	4,500 W	Gasoline or propane	99.2 lb	—	—	$999 at Amazon as of Nov 8, 2026, 5:17 PM ET · Details Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product. In stockCheck price →
Our verdict Our verdictResearched 3,500 running watts is enough to run a fridge, a furnace fan, lights and chargers together, and it runs on gasoline or propane, so you can store fuel that doesn't go stale the way gasoline does. At nearly 100 lb it lives on its wheels, not in a car trunk. Best for Running a fridge, furnace fan and lights at once Good 3,500 running watts Gasoline or propane Electric start Worth knowing About 99 lb Output is usually lower on propane: check the listing Who shouldn't buy it: Don't buy it if you need to lift it into a vehicle: a 2,200 W class inverter is half the weight. Read the full review →What it runs →
4. Champion 201050 4,000-Watt Dual Fuel RV Ready Portable Inverter Generator with CO Shield 3,000 W · 4,000 W · Gasoline or propane · 51.8 lb · CO Shield · 64 dBA at 23 ft Small dual fuel inverter for essentials 4.3	3,000 W	4,000 W	Gasoline or propane	51.8 lb	CO Shield	64 dBA at 23 ft	Check price →
Our verdict Our verdictResearched A recoil-start inverter that runs on gasoline or propane. It gives 3,000 running watts on gasoline and 2,700 on propane, with a TT-30R outlet for an RV and clean-power household outlets. At 51.8 lb it is a carry-it-yourself size. Best for Small dual fuel inverter for essentials Good Runs on gasoline or propane Under 3% THD household outlet Parallel outlets and propane hose included Worth knowing Recoil start only No 120/240V outlet, so not for a transfer switch 1.54-gallon gas tank Who shouldn't buy it: Don't buy it if you need 240V for a transfer switch: it has 120V outlets only. What it runs →
5. Westinghouse WGen7500DFc 9,500 Peak Watt Dual Fuel Home Backup Portable Generator with CO Sensor Best dual fuel for home backup 7,500 W · 9,500 W · Gasoline or propane · 202.1 lb · CO Sensor Dual fuel 7,500-watt with L14-30R 4.3	7,500 W	9,500 W	Gasoline or propane	202.1 lb	CO Sensor	—	Check price →
Our verdict Our verdictResearched A dual fuel generator with 7,500 running watts, electric start and a key fob. It has a 120/240V 30A L14-30R outlet, which is the one a 30-amp inlet box or manual transfer switch connects to, installed by a licensed electrician. Best for Dual fuel 7,500-watt with L14-30R Good L14-30R 120/240V outlet Key fob start, battery charger included CO Sensor Worth knowing 202.1 lb Propane watts not stated No 50A outlet listed Who shouldn't buy it: Don't buy it if you need a 50A outlet: the listing shows a 30A L14-30R. What it runs →
6. Westinghouse iGen12000TFc 12,000 Peak Watt Tri-Fuel Portable Inverter Generator 9,000 W · 12,000 W · Gasoline, propane or natural gas · 191 lb · CO Sensor Tri-fuel backup with remote start 4.2	9,000 W	12,000 W	Gasoline, propane or natural gas	191 lb	CO Sensor	—	Check price →
Our verdict Our verdictResearched A 12,000-peak-watt Westinghouse inverter that runs on gasoline, propane or natural gas, with remote start and a CO Sensor. The title says transfer switch ready; any hookup is installed by a licensed electrician. It weighs 191 lb. Best for Tri-fuel backup with remote start Good Three fuel options Remote and electric start CO Sensor listed Worth knowing 191 lb Propane and natural gas output not listed Noise not stated Who shouldn't buy it: Don't buy it if you want a generator you can lift: it weighs 191 lb. What it runs →
7. Generac iQ5200 DF 5,200-Watt Dual-Fuel Portable Inverter Generator with COsense 3,900 W · 5,200 W · Gasoline or propane · 107 lb · COsense Dual fuel inverter with COsense 4.2	3,900 W	5,200 W	Gasoline or propane	107 lb	COsense	—	Check price →
Our verdict Our verdictResearched A 107 lb electric-start inverter that runs on gasoline (3,900 running watts) or propane (3,500). COsense shuts it down if dangerous CO levels are detected nearby. It has a 30A L5-30R outlet, two GFCI outlets and USB ports. Best for Dual fuel inverter with COsense Good COsense CO shutoff Both fuels' watts listed Electric start with battery included Worth knowing 107 lb No 120/240V outlet for a transfer switch 49-state compliant, not 50 Who shouldn't buy it: Don't buy it if you live in California or need 240V: it is 49-state compliant with 120V outlets only. What it runs →
8. Champion 201393 4,750-Watt Electric Start Dual Fuel RV Ready Portable Generator with CO Shield, CARB 3,800 W · 4,750 W · Gasoline or propane · 133 lb · CO Shield · 68 dB(A) (distance not stated) 50-state dual fuel with electric start 4.2	3,800 W	4,750 W	Gasoline or propane	133 lb	CO Shield	68 dB(A) (distance not stated)	Check price →
Our verdict Our verdictResearched An electric-start dual fuel generator that is listed as 50-state CARB compliant. It lists 3,800 running watts on gasoline and up to 14 hours on gas. It comes with a battery, wheel kit and propane hose. Best for 50-state dual fuel with electric start Good 50-state CARB compliant Electric start, battery and wheels included CO Shield Worth knowing 133 lb Propane watts not stated Outlet types not itemized Who shouldn't buy it: Don't buy it if you need 240V for a transfer switch: the listing does not show a 120/240V outlet. What it runs →
9. Westinghouse WGen10500DFc 13,500 Peak Watt Dual Fuel Home Backup Portable Generator with Remote Electric Start 10,500 W · 13,500 W · Gasoline or propane · 230 lb · CO Sensor High-output dual fuel for home backup 4.2	10,500 W	13,500 W	Gasoline or propane	230 lb	CO Sensor	—	Check price →
Our verdict Our verdictResearched A 230 lb dual fuel open-frame generator with 10,500 running watts and a 9.5-gallon tank. Westinghouse lists a CO Sensor and remote electric start. The listing does not itemize outlets or give propane output. Best for High-output dual fuel for home backup Good 10,500 running watts CO Sensor Remote electric start Worth knowing 230 lb Outlet types not itemized Propane watts not stated Who shouldn't buy it: Don't buy it if you need to see the outlet layout first: the listing does not itemize it. What it runs →
10. Westinghouse iGen2550DFc 2,550 Peak Watt Dual Fuel Super Quiet Lightweight Inverter Generator with CO Sensor 1,900 W · 2,550 W · Gasoline or propane · 43.2 lb · CO Sensor · 52 dBA (as low as; distance not stated) Light dual fuel inverter for small loads 4.2	1,900 W	2,550 W	Gasoline or propane	43.2 lb	CO Sensor	52 dBA (as low as; distance not stated)	Check price →
Our verdict Our verdictResearched A light inverter generator for gasoline or propane with 1,900 rated watts and a TT-30R outlet. Westinghouse lists a CO Sensor and run time up to 11 hours at 25% load. It suits small loads such as phones, lights and a fridge. Best for Light dual fuel inverter for small loads Good About 43 lb CO Sensor Under 3% THD Worth knowing 1,900 running watts No electric start listed No 120/240V outlet Who shouldn't buy it: Don't buy it if you need to run big loads: it lists 1,900 rated watts. What it runs →
11. Westinghouse WGen9500TFc EFI 12,500 Peak Watt Tri-Fuel Home Backup Portable Generator, CARB Compliant 9,500 W · 12,500 W · Gasoline, propane or natural gas · CO Sensor EFI tri-fuel for home backup 4.2	9,500 W	12,500 W	Gasoline, propane or natural gas	—	CO Sensor	—	Check price →
Our verdict Our verdictResearched A tri-fuel generator with electronic fuel injection, remote electric start and 9,500 running watts. It is listed as CARB compliant and has a CO sensor and automatic low-oil shutdown. The listing does not give propane or natural gas output, outlet types or weight. Best for EFI tri-fuel for home backup Good Gasoline, propane and natural gas CARB compliant EFI and remote electric start Worth knowing Propane and natural gas watts not stated Outlet types not itemized Weight not stated Who shouldn't buy it: Don't buy it if you need the outlet layout and weight first: the listing gives neither. What it runs →
12. DuroMax XP15000HXT+ 15,000-Watt Portable Tri Fuel EFI Generator, 50 State Approved 12,000 W · 15,000 W · Gasoline, propane or natural gas · 245 lb · CO Sensor Big tri-fuel with 50A outlets 4.2	12,000 W	15,000 W	Gasoline, propane or natural gas	245 lb	CO Sensor	—	Check price →
Our verdict Our verdictResearched A 245 lb tri-fuel generator with 12,000 running watts, EFI and remote start. DuroMax lists a CO Sensor, 30A and 50A receptacles and a 5-year warranty. Any connection to house wiring through an inlet box or transfer switch is for a licensed electrician. Best for Big tri-fuel with 50A outlets Good Gasoline, propane and natural gas 30A and 50A receptacles 5-year warranty Worth knowing 245 lb Propane and natural gas watts not stated Outlet counts in the listing differ Who shouldn't buy it: Don't buy it if you need a lighter unit: it weighs 245 lb. What it runs →
13. DuroMax XP11000iH 11,000-Watt Dual Fuel Portable Digital Inverter Generator 9,000 W · 11,000 W · Gasoline or propane · 216 lb · CO Sensor · Under 61 dB at 25% load (distance not stated) Dual-fuel backup with remote electric start 4.1	9,000 W	11,000 W	Gasoline or propane	216 lb	CO Sensor	Under 61 dB at 25% load (distance not stated)	Check price →
Our verdict Our verdictResearched An 11,000-watt DuroMax dual fuel inverter that runs on gasoline or propane, with remote electric start and a CO Sensor. The title says transfer switch ready; any hookup is installed by a licensed electrician. It weighs 216 lb. Best for Dual-fuel backup with remote electric start Good Gasoline or propane Remote electric start 5-year warranty Worth knowing 216 lb Outlet types not described in the listing Propane output not listed Who shouldn't buy it: Don't buy it if you want a generator you can lift: it weighs 216 lb. What it runs →
14. WEN DF480iX 4,800-Watt Dual Fuel RV-Ready Electric Start Portable Inverter Generator with CO Watchdog 4,000 W · 4,800 W · Gasoline or propane · 78.5 lb · CO Watchdog Mid-size dual fuel inverter, electric start 4.1	4,000 W	4,800 W	Gasoline or propane	78.5 lb	CO Watchdog	—	Check price →
Our verdict Our verdictResearched An electric-start inverter generator that runs on gasoline or propane and lists 4,000 running watts. It has a fuel shut-off and WEN's CO Watchdog. The listing does not give outlet types or propane output. Best for Mid-size dual fuel inverter, electric start Good Electric start Fuel shut-off Three-year warranty Worth knowing Propane output not stated Outlet types not itemized 78.5 lb is heavy for an inverter of this size Who shouldn't buy it: Don't buy it if you need a 120/240V outlet for a transfer switch: the listing shows 120V only. What it runs →
15. Westinghouse iGen4000DFcv 4,000 Peak Watt Dual Fuel Portable Inverter Generator with CO Sensor 3,300 W · 4,000 W · Gasoline or propane · 59 lb · CO Sensor · 52 dBA (as low as; distance not stated) Wheeled dual fuel inverter, 3,300 watts 4.1	3,300 W	4,000 W	Gasoline or propane	59 lb	CO Sensor	52 dBA (as low as; distance not stated)	Check price →
Our verdict Our verdictResearched A recoil-start inverter generator for gasoline or propane with a wheel and handle kit. It lists 3,300 running watts and up to 7 hours on a 1.69-gallon tank. Westinghouse lists a CO Sensor. Best for Wheeled dual fuel inverter, 3,300 watts Good Wheel and handle kit included CO Sensor listed Parallel capable Worth knowing Recoil start Listed run time is 7 hours Outlet types not itemized Who shouldn't buy it: Don't buy it if you want electric start: this one is recoil start. What it runs →
16. Generac G0080623 8,250 Starting Watt Dual Fuel Portable Generator with COsense 6,700 W · 8,250 W · Gasoline or propane · 181 lb · COsense Dual fuel portable for outage backup 4.1	6,700 W	8,250 W	Gasoline or propane	181 lb	COsense	—	Check price →
Our verdict Our verdictResearched An electric-start dual fuel generator with 6,700 running watts on gasoline and a propane option. Generac lists COsense CO detection and an adapter cord. Propane output and outlet types are not given. Best for Dual fuel portable for outage backup Good COsense CO detection Adapter cord included Automatic idle control Worth knowing 181 lb Propane output not stated 49-state compliant, not 50 Who shouldn't buy it: Don't buy it if you live in California or need to know the outlet layout: it is 49-state and the listing does not itemize outlets. What it runs →
17. Champion 201302 11,500-Watt Electric Start Dual Fuel Portable Generator 9,200 W · 11,500 W · Gasoline or propane · 209 lb · CO Sensor Large dual fuel for home backup 4.1	9,200 W	11,500 W	Gasoline or propane	209 lb	CO Sensor	—	Check price →
Our verdict Our verdictResearched A large electric-start dual fuel generator with 9,200 running watts listed and a wheel kit. The listing names a CO Sensor but does not give propane output or outlet types. Check the outlet layout before planning a transfer switch hookup. Best for Large dual fuel for home backup Good 9,200 running watts Electric start, battery and wheel kit included CO Sensor listed Worth knowing 209 lb Outlet types not itemized Propane watts not stated Who shouldn't buy it: Don't buy it if you need to confirm a 120/240V outlet first: the listing does not itemize outlets. What it runs →
18. Champion 201544 14,000-Watt Wireless Remote Start Dual Fuel Portable Generator with StartLINK and CO Shield 11,000 W · 14,000 W · Gasoline or propane · 245 lb · CO Shield Big dual fuel with remote start 4.1	11,000 W	14,000 W	Gasoline or propane	245 lb	CO Shield	—	Check price →
Our verdict Our verdictResearched A 245 lb dual fuel generator with 11,000 running watts and wireless remote start. Champion says StartLINK can auto start and stop it through a wired link to an energy storage system or automatic transfer switch. Any such hookup is a job for a licensed electrician. Best for Big dual fuel with remote start Good 11,000 running watts Wireless remote start CO Shield Worth knowing 245 lb Outlet types and tank size not stated Propane watts not stated Who shouldn't buy it: Don't buy it if you need a lighter unit: it weighs 245 lb. What it runs →
19. DuroMax XP13000HX 13,000-Watt Dual Fuel Portable Generator 13,000 W · Gasoline or propane · 245 lb Large dual fuel with 30A and 50A outlets 4.1	—	13,000 W	Gasoline or propane	245 lb	—	—	Check price →
Our verdict Our verdictResearched A 245 lb dual fuel generator with both a 120/240V 30A twist-lock and a 120/240V 50A outlet, so it can feed a 30A or 50A inlet box or transfer switch installed by a licensed electrician. Running watts are unclear in the listing and no CO shutoff is mentioned. Best for Large dual fuel with 30A and 50A outlets Good 30A twist-lock and 50A outlets Electric start with backup recoil 5-year warranty Worth knowing Running watts unclear in the listing No CO shutoff named in the listing 245 lb Who shouldn't buy it: Don't buy it if you want a named CO shutoff: the listing does not mention one. What it runs →
20. Champion 201223 5,000-Watt Electric Start Tri Fuel Portable Generator 4,000 W · 5,000 W · Gasoline, propane or natural gas · 135 lb · CO Sensor Tri-fuel for natural gas hookups 4.1	4,000 W	5,000 W	Gasoline, propane or natural gas	135 lb	CO Sensor	—	Check price →
Our verdict Our verdictResearched An electric-start generator that runs on gasoline, propane or natural gas, with watts listed for all three. It gives 4,000 running watts on gasoline and 3,240 on natural gas. Champion lists hoses for both gases and a CO Sensor. Best for Tri-fuel for natural gas hookups Good Gasoline, propane and natural gas Watts listed for each fuel Hoses for propane and natural gas included Worth knowing Outlet types not itemized 135 lb Lower output on natural gas Who shouldn't buy it: Don't buy it if you need 240V for a transfer switch: the listing shows 120V only. What it runs →
21. DuroMax XP5500EH 5,500-Watt Dual Fuel Portable Generator 4,500 W · 5,500 W · Gasoline or propane · 124 lb The essentials on gas or propane 4.0	4,500 W	5,500 W	Gasoline or propane	124 lb	—	—	$769.95 at Amazon as of Nov 8, 2026, 5:17 PM ET · Details Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product. In stockCheck price →
Our verdict Our verdictResearched 4,500 running watts covers a refrigerator, a furnace blower and a sump pump together on our sizing chart, on gasoline or propane, with electric start. An open-frame generator, so louder than the inverters here. Best for The essentials on gas or propane Good Gasoline or propane Electric start 4,500 running watts Worth knowing 124 lb Open frame: louder than an inverter Who shouldn't buy it: Don't buy it if you also want a quiet generator for camping. Read the full review →What it runs →
22. Champion Power Equipment 9375-Watt Electric Start Dual Fuel Home Backup Portable Generator with CO Shield 7,500 W · 9,375 W · Gasoline or propane · 205 lb · CO Shield Home backup through a transfer switch 4.0	7,500 W	9,375 W	Gasoline or propane	205 lb	CO Shield	—	$874.99 at Amazon as of Nov 8, 2026, 5:17 PM ET · Details Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product. In stockCheck price →
Our verdict Our verdictResearched 7,500 running watts on gasoline (6,750 on propane), CO Shield automatic shutoff and an L14-30R outlet for a transfer switch. On our sizing chart it runs a refrigerator, furnace blower, sump pump and window AC together. Best for Home backup through a transfer switch Good CO Shield auto shutoff L14-30R transfer-switch outlet Gasoline or propane Worth knowing 205 lb Open frame: louder than an inverter Who shouldn't buy it: Don't buy it if you have no safe outdoor spot at least 20 feet from windows, doors and vents to run it. Read the full review →What it runs →
23. DuroMax XP12000EH 12,000-Watt Dual Fuel Portable Generator 9,500 W · 12,000 W · Gasoline or propane · 224 lb Whole-home portable on gas or propane 4.0	9,500 W	12,000 W	Gasoline or propane	224 lb	—	—	$1,299 at Amazon as of Nov 8, 2026, 5:17 PM ET · Details Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product. In stockCheck price →
Our verdict Our verdictResearched 9,500 running and 12,000 starting watts on gasoline or propane, with electric start and a transfer-switch-ready panel. On our sizing chart it runs a well pump, a sump pump, the refrigerator and a microwave at once. Best for Whole-home portable on gas or propane Good 9,500 running watts Gasoline or propane Electric start Worth knowing 224 lb Open frame: louder than an inverter Who shouldn't buy it: Don't buy it if you can't store and rotate fuel for a generator this size. What it runs →
24. DuroMax XP13000EH 13,000-Watt Dual Fuel Portable Generator 10,500 W · 13,000 W · Gasoline or propane · 234 lb 10,500 running watts on gas or propane 4.0	10,500 W	13,000 W	Gasoline or propane	234 lb	—	—	$1,299 at Amazon as of Nov 8, 2026, 5:17 PM ET · Details Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product. In stockCheck price →
Our verdict Our verdictResearched 10,500 running watts and 13,000 to start, on gasoline or propane, with electric start and a transfer-switch-ready panel. DTE Energy's figures put a 3-ton central air conditioner at 18,000 watts to start, more than this makes. Best for 10,500 running watts on gas or propane Good 10,500 running watts Gasoline or propane Electric start Worth knowing 234 lb Open frame: louder than an inverter Who shouldn't buy it: Don't buy it if you need to run central air: that is a standby-generator job. What it runs →
25. Westinghouse 14500 Peak Watt Tri-Fuel Home Backup Portable Generator, Remote Electric Start, CO Sensor 11,500 W · 14,500 W · Gasoline, propane or natural gas · 230 lb · CO sensor A natural gas hookup option 4.0	11,500 W	14,500 W	Gasoline, propane or natural gas	230 lb	CO sensor	—	$1,499 at Amazon as of Nov 8, 2026, 5:17 PM ET · Details Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product. In stockCheck price →
Our verdict Our verdictResearched 11,500 running watts on gasoline, and it also runs on propane or natural gas (at lower ratings), with remote start and a CO sensor that shuts it down. The natural gas option needs a proper gas connection fitted by a professional. Best for A natural gas hookup option Good Gasoline, propane or natural gas Remote start Automatic CO shutdown Worth knowing 230 lb Open frame: louder than an inverter Who shouldn't buy it: Don't buy it if you have no natural gas line and won't use the third fuel. What it runs →
26. Champion 201175 7,000-Watt Dual Fuel Inverter Portable Generator, with CO Shield 7,000 W · 8,500 W · Gasoline or propane · 213.9 lb · CO Shield Essential circuits through a transfer switch, with inverter power 4.0	7,000 W	8,500 W	Gasoline or propane	213.9 lb	CO Shield	—	Check price →
Our verdict Our verdictResearched At 7,000 running watts on gasoline (6,300 on propane) this covers a refrigerator, freezer, furnace blower, sump pump and a window air conditioner, with a 14-50R and an L14-30R outlet for transfer-switch or generator-cord hookups. CO Shield is the maker's term for its carbon monoxide shutoff. Best for Essential circuits through a transfer switch, with inverter power Good CO Shield carbon monoxide shutoff Gasoline or propane 14-50R and L14-30R outlets plus electric start Worth knowing Heavy at 213.9 lb Propane running watts drop to 6,300 14-50R outlet limited to 29.2A per the manual Who shouldn't buy it: Don't buy it if you need to carry it up steps or store it in a small space. What it runs →
27. Champion 201169 6,500-Watt Tri-Fuel Portable Generator, with CO Shield 6,500 W · 8,125 W · Gasoline, propane or natural gas · 206 lb · CO Shield Households that want a natural gas hookup option 4.0	6,500 W	8,125 W	Gasoline, propane or natural gas	206 lb	CO Shield	—	Check price →
Our verdict Our verdictResearched At 6,500 running watts on gasoline (6,000 on propane, 5,500 on natural gas) it can cover a refrigerator, furnace blower, sump pump and several lights, with a window air conditioner as the biggest add. The L14-30R locking outlet is the one a manual transfer switch cord plugs into, and CO Shield is the maker's term for its carbon monoxide shutoff. Best for Households that want a natural gas hookup option Good Runs on gasoline, propane or natural gas CO Shield carbon monoxide shutoff Large 8.5-gal gasoline tank Worth knowing Heavy at 206 lb No 14-50R outlet Natural gas output drops to 5,500 running watts Who shouldn't buy it: Don't buy it if you need a 50A outlet or a unit two people can lift easily. What it runs →
28. Generac GP9500E 9,500-Watt Tri-Fuel Portable Generator, with COsense (49-State) 9,500 W · 12,500 W · Gasoline, propane or natural gas · 219 lb · COsense High-wattage backup with a natural gas option 4.0	9,500 W	12,500 W	Gasoline, propane or natural gas	219 lb	COsense	—	Check price →
Our verdict Our verdictResearched At 9,500 running watts on gasoline it can carry a refrigerator, freezer, furnace blower, sump or well pump and a window air conditioner at once, with room to spare. It has L14-30R and 14-50R outlets, Generac lists it as HomeLink manual transfer switch compatible, and COsense is the maker's term for its carbon monoxide shutoff. Best for High-wattage backup with a natural gas option Good COsense carbon monoxide shutoff Gasoline, propane or natural gas 14-50R and L14-30R outlets with electric start Worth knowing Heavy at 219 lb per maker page Propane and natural gas output are lower than gasoline 49-state model, not for California Who shouldn't buy it: Don't buy it if you need something you can lift into a truck alone or live in California. What it runs →
29. Westinghouse WGen10500TFc 10,500-Watt Tri-Fuel Portable Generator with CO Sensor 10,500 W · 13,500 W · Gasoline, propane or natural gas · 230 lb · CO sensor Big households wanting gas, propane or a natural gas hookup 4.0	10,500 W	13,500 W	Gasoline, propane or natural gas	230 lb	CO sensor	—	Check price →
Our verdict Our verdictResearched At 10,500 running watts on gasoline (9,500 propane, 8,500 natural gas) it has room for a refrigerator, freezer, furnace blower, well or sump pump and a window air conditioner or two. A natural gas hookup means no refueling in a long outage; the maker lists a CO sensor with automatic shutdown. Best for Big households wanting gas, propane or a natural gas hookup Good Runs on gasoline, propane or natural gas CO sensor with automatic shutdown L14-30R and 14-50R outlets Worth knowing 230 lb per maker page Natural gas output drops to 8,500 W Not CARB compliant per maker, so not for California Who shouldn't buy it: Don't buy it if you only need a few hundred watts or want something easy to move. What it runs →
30. DuroMax XP9500iH 7,600-Watt Dual Fuel Inverter Portable Generator with CO Alert 7,600 W · 9,500 W · Gasoline or propane · 216 lb · CO Alert Home backup with cleaner power for electronics 4.0	7,600 W	9,500 W	Gasoline or propane	216 lb	CO Alert	—	$1,999 at Amazon as of Nov 8, 2026, 5:17 PM ET · Details Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product. In stockCheck price →
Our verdict Our verdictResearched At 7,600 running watts on gasoline (7,200 on propane) it covers a refrigerator, furnace blower, sump or well pump and a window AC together. Inverter output is cleaner for electronics, the 14-50R and L14-30R suit a transfer switch or interlock, and the maker lists CO Alert shutdown. Best for Home backup with cleaner power for electronics Good Inverter output with CO Alert 14-50R and L14-30R outlets Runs on gasoline or propane Worth knowing 216 lb dry per maker page Not CARB compliant per maker Propane drops output to 7,200 W Who shouldn't buy it: Don't buy it if you live in California, as the maker lists it as not CARB compliant. What it runs →
31. Firman T09275 9,200-Watt Tri-Fuel Portable Generator with CO Alert 9,200 W · 11,400 W · Gasoline, propane or natural gas · 217.5 lb · CO Alert Large-home backup that can run off a natural gas line 4.0	9,200 W	11,400 W	Gasoline, propane or natural gas	217.5 lb	CO Alert	—	$1,572.15 at Amazon as of Nov 8, 2026, 5:17 PM ET · Details Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product. In stockCheck price →
Our verdict Our verdictResearched At 9,200 running watts on gasoline (8,300 propane, 6,900 natural gas) it has room for a refrigerator, freezer, furnace blower, well or sump pump and a window air conditioner or two. The L14-30R and 14-50R outlets suit a transfer switch or interlock, and the maker lists CO Alert shutdown. Best for Large-home backup that can run off a natural gas line Good Gas, propane or natural gas CO Alert shutdown L14-30R and 14-50R outlets Worth knowing 217.5 lb per maker page Only one 5-20R duplex outlet Natural gas output falls to 6,900 W Who shouldn't buy it: Don't buy it if you live in California, where the maker will not ship it. What it runs →
32. WEN DF360iX 3,600-Watt Dual Fuel RV-Ready Portable Inverter Generator with CO Watchdog 2,600 W · 3,600 W · Gasoline or propane · 49 lb · CO Watchdog Light dual fuel inverter for camping 4.0	2,600 W	3,600 W	Gasoline or propane	49 lb	CO Watchdog	—	Check price →
Our verdict Our verdictResearched A 49 lb inverter generator that runs on gasoline or propane, with 2,600 running watts listed. It has a TT-30R RV outlet, USB ports and WEN's CO Watchdog. Output is modest, so it suits small loads. Best for Light dual fuel inverter for camping Good 49 lb TT-30R RV outlet and USB ports Tool-free propane connector Worth knowing No electric start listed Propane output not stated Listed run time is 5 hours Who shouldn't buy it: Don't buy it if you need to run more than a few essentials: it lists 2,600 running watts. What it runs →
33. WEN DF680iX 6,800-Watt Dual Fuel RV-Ready Electric Start Portable Inverter Generator with CO Watchdog 4,500 W · 6,800 W · Gasoline or propane · 99.2 lb · CO Watchdog Larger inverter that offers 240V output 4.0	4,500 W	6,800 W	Gasoline or propane	99.2 lb	CO Watchdog	—	Check price →
Our verdict Our verdictResearched An electric-start inverter generator for gasoline or propane with a 240V configuration. The listing says it can do low-power Level 2 charging of battery and hybrid electric vehicles. It lists 4,500 running watts; outlet types are not itemized. Best for Larger inverter that offers 240V output Good 240V configuration listed Electric start Fuel shut-off Worth knowing Outlet types not itemized Propane output not stated 99.2 lb Who shouldn't buy it: Don't buy it if you need to know the outlet types before buying: the listing does not itemize them. What it runs →
34. Westinghouse iGen5000DF 5,000 Peak Watt Dual Fuel Portable Inverter Generator with Remote Electric Start 3,900 W · 5,000 W · Gasoline or propane · 104.7 lb · 52 dBA (as low as; distance not stated) Electric start inverter with long run time 4.0	3,900 W	5,000 W	Gasoline or propane	104.7 lb	—	52 dBA (as low as; distance not stated)	Check price →
Our verdict Our verdictResearched An electric-start, key-fob inverter generator that runs on gasoline or propane. It lists 3,900 running watts and up to 18 hours on 3.4 gallons of gas, with a data display and an RV-ready TT-30R outlet. The listing does not mention a CO shutoff. Best for Electric start inverter with long run time Good Remote electric start Up to 18 hours on a full tank Data display and Economy Mode Worth knowing 104.7 lb No CO shutoff named in the listing Listing mixes iGen5000DF and iGen4500DF details Who shouldn't buy it: Don't buy it if you need 240V for a transfer switch: it has 120V outlets only. What it runs →
35. WEN DF1100X 11,000-Watt Dual Fuel Electric Start Portable Generator with Wheel Kit and CO Shutdown Sensor 8,300 W · 11,000 W · Gasoline or propane · 213.8 lb · CO Shutdown Sensor Dual fuel with CO shutdown, 8,300 watts 4.0	8,300 W	11,000 W	Gasoline or propane	213.8 lb	CO Shutdown Sensor	—	Check price →
Our verdict Our verdictResearched An electric-start dual fuel generator with 8,300 running watts, a wheel kit and a CO Shutdown Sensor. WEN says its voltage goes from 120V to 240V for transfer switches and emergency backup. The listing does not itemize outlets or state a warranty. Best for Dual fuel with CO shutdown, 8,300 watts Good CO Shutdown Sensor 120V and 240V output listed Electric start and wheel kit Worth knowing 213.8 lb Outlet types not itemized Warranty not stated Who shouldn't buy it: Don't buy it if you need to see the outlet types and warranty first: the listing gives neither. What it runs →
36. DuroMax XP16000iH 16,000-Watt Dual Fuel Portable Digital Inverter Generator 13,000 W · 16,000 W · Gasoline or propane · 368 lb · CO Sensor · Under 72 dB at 25% load (distance not stated) Large dual-fuel unit with 50A outlets 3.8	13,000 W	16,000 W	Gasoline or propane	368 lb	CO Sensor	Under 72 dB at 25% load (distance not stated)	Check price →
Our verdict Our verdictResearched A 16,000-watt DuroMax dual fuel inverter with two 50A outlets. The title says transfer switch ready; any hookup is installed by a licensed electrician. It runs on gasoline or propane and weighs 368 lb. The listing names a CO Sensor. Best for Large dual-fuel unit with 50A outlets Good Two 50A outlets Gasoline or propane 5-year warranty Worth knowing 368 lb Propane output not listed Needs a transfer switch installed by a licensed electrician for house use Who shouldn't buy it: Don't buy it if you want a portable unit one person can move: it weighs 368 lb. What it runs →
37. Champion Power Equipment 201504 3,650-Watt Dual Fuel Generator with Electric Start 3,650 W · 4,650 W · Gasoline or propane · 140 lb Basic dual fuel for a few essentials 3.8	3,650 W	4,650 W	Gasoline or propane	140 lb	—	—	Check price →
Our verdict Our verdictResearched A 3,650-watt dual fuel generator with push-button electric start. The listing names low-oil shutoff and overload protection but no CO shutoff, propane output or warranty. Best for Basic dual fuel for a few essentials Good Electric start Low-oil shutoff and overload protection Runs on gasoline or propane Worth knowing No CO shutoff named in the listing 140 lb with a carry handle only (no wheels listed) Warranty and propane output not stated Who shouldn't buy it: Don't buy it if you want a CO shutoff built in: the listing does not name one. What it runs →
38. Pulsar G12KBN 9,500-Watt Heavy Duty Portable Dual Fuel Generator, CARB Compliant 9,500 W · 12,000 W · Gasoline or propane CARB-compliant dual fuel with 30A and 50A 3.8	9,500 W	12,000 W	Gasoline or propane	—	—	—	Check price →
Our verdict Our verdictResearched A dual fuel generator with 9,500 running watts, a 120/240V 30A twist-lock and a 50A outlet, listed as CARB compliant. The warranty is one year and the listing names no CO shutoff. Best for CARB-compliant dual fuel with 30A and 50A Good CARB compliant 30A twist-lock and 50A outlets Up to 12 hours at half load on gasoline Worth knowing 1-year warranty No CO shutoff named in the listing Weight not stated clearly Who shouldn't buy it: Don't buy it if you want a named CO shutoff or a longer warranty: the listing gives neither. What it runs →
39. Pulsar GD400BN 4,000W Portable Dual Fuel Generator, Parallel Capable, RV-Ready, CARB Compliant 3,200 W · 4,000 W · Gasoline or propane · 47.3 lb · 59 dB at half load (distance not stated) Light CARB-compliant dual fuel 3.8	3,200 W	4,000 W	Gasoline or propane	47.3 lb	—	59 dB at half load (distance not stated)	Check price →
Our verdict Our verdictResearched A 47.3 lb dual fuel generator listed as CARB compliant and parallel capable. It lists 3,200 running watts, a 1.1-gallon tank and a 4-hour run time. The warranty is one year. Best for Light CARB-compliant dual fuel Good 47.3 lb CARB compliant Parallel capable Worth knowing Listed run time is 4 hours 1-year warranty No CO shutoff named in the listing Who shouldn't buy it: Don't buy it if you want long run time or a CO shutoff named in the listing: it shows 4 hours and none. What it runs →
40. ERAYAK 4500PDM 4,500W Dual-Fuel Portable Inverter Generator with CO Sensor 3,500 W · 4,500 W · Gasoline or propane · 54 lb · CO Sensor · 60 dB at 7 m Compact dual fuel inverter, 3,500 watts 3.8	3,500 W	4,500 W	Gasoline or propane	54 lb	CO Sensor	60 dB at 7 m	Check price →
Our verdict Our verdictResearched A 54 lb dual fuel inverter generator with 3,500 rated watts, 30A RV-ready output (a TT-30R conversion plug is supplied) and a CO Sensor with automatic shut down. It is parallel ready and recoil start. The listing's model names do not match. Best for Compact dual fuel inverter, 3,500 watts Good 54 lb CO Sensor with automatic shut down Parallel ready Worth knowing Model number and name differ in the listing Propane watts not stated Recoil start Who shouldn't buy it: Don't buy it if you need 240V for a transfer switch: the listing shows 120V only. What it runs →
41. Generac iQ3800 DF 3,800-Watt Dual-Fuel Portable Inverter Generator with COsense 3,000 W · 3,800 W · Gasoline or propane · 107 lb · COsense Dual fuel inverter with COsense, 3,000 watts 3.6	3,000 W	3,800 W	Gasoline or propane	107 lb	COsense	—	Check price →
Our verdict Our verdictResearched An electric-start inverter generator for gasoline (3,000 running watts) or propane (2,700). Dual COsense sensors shut it down if CO reaches hazardous levels. It weighs 107 lb with wheels and a handle. Best for Dual fuel inverter with COsense, 3,000 watts Good COsense CO shutoff Electric start with backup recoil Propane and gasoline watts listed Worth knowing 107 lb Outlet types not itemized Run time figures in the listing differ Who shouldn't buy it: Don't buy it if you need 240V for a transfer switch: the listing shows no 120/240V outlet. What it runs →
42. DuroMax XP13000HXT 10,500-Watt Tri-Fuel Portable Generator with CO Alert 10,500 W · 13,000 W · Gasoline, propane or natural gas · 246 lb · CO Alert Whole-house backup with a natural gas hookup option 5.0	10,500 W	13,000 W	Gasoline, propane or natural gas	246 lb	CO Alert	—	Check price →
Our verdict Our verdictResearched At 10,500 running watts on gasoline (10,000 propane, 9,000 natural gas) it has room for a refrigerator, freezer, furnace blower, well or sump pump and a window air conditioner or two. It has L14-30R and 14-50R outlets for a transfer switch or interlock, and the maker lists CO Alert shutdown and a natural gas hose in the box. Best for Whole-house backup with a natural gas hookup option Good Gas, propane or natural gas CO Alert shutdown plus remote start L5-30R, L14-30R and 14-50R outlets Worth knowing 246 lb per maker page Not CARB compliant per maker Natural gas output drops to 9,000 W Who shouldn't buy it: Don't buy it if you live in California or want something you can lift into a truck. What it runs →

ⓘ As an Amazon Associate, PreparedStates earns from qualifying purchases. We may earn a commission when you buy through our links. When two products are close, commission can decide which one we pick. A clearly better product always wins. Amazon prices come from Amazon's own product data and can change at any time.

Who needs one, and who doesn't

Dual fuel makes sense if you'd rather keep propane cylinders than cans of gasoline, or want a second fuel when gas stations are closed after a storm. Tri-fuel only helps if your home has a natural gas line and a licensed professional fits the connection. If you'll only ever use gasoline, a single-fuel model on our generators page does the same job. And if you want power that starts by itself, a home standby generator is the permanent answer. Any of these runs outdoors only: CDC says never less than 20 feet from any window, door or vent.

Before you buy

Compare the propane figure, not just the gasoline one.

Most makers list fewer running watts on propane, and fewer again on natural gas; size for the fuel you'll actually use.

Why propane?

A full cylinder is easy to swap, and it gives you a second fuel when gas stations are closed. CPSC says to store generator fuel outside living areas in properly labeled, non-glass safety containers, and never in the home.

Natural gas (tri-fuel) means a connection to your home's gas supply.

Follow the maker's manual and local code, and have a licensed professional make the connection.

Outlets decide what it can feed.

A 120/240V L14-30R (30-amp) or 14-50R (50-amp) outlet connects to a transfer switch or inlet box installed by a qualified electrician; most smaller models have 120V outlets only, often with an RV outlet.

Inverter or open frame?

Dual fuel inverters are quieter and lighter for their size; open-frame dual fuel models give more watts and are the usual pick for a transfer switch.

Carbon monoxide shutoff.

Look for the maker's named CO shutoff (CO Shield, COsense, CO Watchdog, CO sensor, CO Alert). We name it only when the listing for that exact model does.

Weight: the big ones here are over 200 lb.

Check for wheels and a fold-down handle, and plan where it will stand, outdoors and well away from the house.

Fit carbon monoxide alarms with battery backup on every level of your home before you run any generator.

How we choose

We verify every product's specifications against at least two independent sources, re-check its US price and stock on a schedule where we can track it automatically, and cross-check safety-relevant claims against official guidance. Every review is labeled Researched or Used and reviewed by us: where we've bought a product, or been sent it free, and used it ourselves, its review says which; where we haven't, our verdict is a considered spec-and-evidence comparison, not a hands-on test. When two products are close, commission can decide which one we pick. A clearly better product always wins. Read our full methodology →

Head-to-head

Champion 2500W dual fuel vs WEN 56235i →Honda EU2200i vs Champion 2500W dual fuel →

Related gear comparisons

Generators compared →Home backup generators compared →Inverter generators compared →Generator cords and inlet boxes compared →Generator transfer switches compared →Carbon monoxide detectors compared →

Guides that go with this

Portable generator safety: where to run it, carbon monoxide and cords

How to use a portable generator safely in an outage: 20 feet from windows, never in a garage, CO alarms, outdo…

Read the guide →

Power outage checklist: what to do before, during and after

A calm power outage checklist from Ready.gov and CDC: what to prepare, how to protect food, medicines and medi…

Read the guide →

Hurricane preparedness checklist: what to do before, during and after a storm

Hurricane season dates, watch vs warning, how to find your evacuation zone, storm surge, supplies, and what to…

Read the guide →

Winter storm preparedness checklist: before, during and after

A plain-English winter storm checklist: watch vs warning, home prep, supplies, staying warm, shoveling and car…

Read the guide →

Common questions

Is a dual fuel generator worth it?

If you'd rather store propane cylinders than gasoline, or want a second fuel when gas stations are closed, yes. If you'll only ever use gasoline, a gasoline-only model of the same size does the same job. Either way, check the running watts on the fuel you'll use.

How much power do you lose on propane?

It depends on the model, so each card gives the maker's figures. For example, Champion lists its 201050 at 3,000 running watts on gasoline and 2,700 on propane.

What is a tri-fuel generator?

One that runs on gasoline, propane or natural gas. Natural gas means a connection to your home's gas supply, made by a licensed professional to the maker's manual and local code; most makers list the fewest watts on natural gas.

Can a dual fuel generator run my house?

The big ones can run a lot of it through a transfer switch installed by a qualified electrician; OSHA says never to attach a generator to a home's electrical system any other way. Our wattage calculator shows what each size runs.

Can I run a generator with a CO shutoff in the garage?

No. CPSC says never to use a generator inside homes, garages, crawlspaces, sheds or similar areas, even with fans running or doors and windows open, and CDC says never less than 20 feet from any window, door or vent. A CO shutoff stops the engine when carbon monoxide builds up around the generator; it is a backstop, not permission to run one near the house. Fit battery-operated or battery back-up CO alarms in the home too.

How far from the house should a generator be?

Ready.gov says generators and fuel should always be used outdoors and at least 20 feet away from windows, doors and attached garages, and CDC says never less than 20 feet from any window, door or vent.

Sources (5)

PreparedStates: generator wattage calculator
Ready.gov: Power outagesgenerators outdoors, at least 20 feet from windows, doors and attached garages
CDC: Protect yourself during a power outagegenerators at least 20 feet from any window, door or vent
CPSC: Portable generator safety alert (CO, wet weather, backfeeding)
OSHA: Using portable generators safely, fact sheet OSHA 3286transfer switch, clear space, wet conditions