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Fuel Efficient Generator Comparison - April 2026
| 1 Best Choice  9.6Exceptional | 2  9.5Excellent | 3  9.4Excellent | 4  9.3Excellent | 5  9.1Excellent | 6  8.8Very Good | 7  8.7Very Good |
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ModelWestinghouse 12500 Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered | Model Westinghouse 8200 Peak Watt Tri-Fuel Portable Inverter Generator, Remote Electric Start, Transfer Switch Ready, Gas, Propane, Natural Gas, Low THD, Safe for Electronics, Parallel Capable, CO Sensor | Model WEN 6800-Watt Dual Fuel RV-Ready Electric Start Portable Inverter Generator with Fuel Shut Off and CO Watchdog for Electric Vehicle Backup (DF680iX) | Model Westinghouse 2550 Peak Watt Super Quiet & Lightweight Portable Inverter Generator, RV Ready 30A Outlet, Gas and Propane Powered, CO Sensor, Parallel Capable, Long Run Time | Model WEN 5,600-Watt Dual Fuel Portable Generator with Wheel Kit, Electric Start, and CO Watchdog (DF5600X) | Model WEN Quiet and Lightweight 3600-Watt Dual Fuel RV-Ready Portable Inverter Generator with Fuel Shut Off and CO Watchdog (DF360iX) | Model WEN 4,750-Watt 120V/240V Dual Fuel Portable Generator with Wheel Kit and Electric Start (DF475T) |
BrandWestinghouse | Brand Westinghouse | Brand WEN | Brand Westinghouse | Brand WEN | Brand WEN | Brand WEN |
Reviews | Reviews  | Reviews | Reviews | Reviews | Reviews  | Reviews |
Features | ||||||
Worth the money 9.9 | Worth the money 9.9 | Worth the money 9.8 | Worth the money 8.6 | Worth the money 8.1 | Worth the money 7.9 | Worth the money 9.3 |
Maneuverability 9.6 | Maneuverability 9.6 | Maneuverability 9.4 | Maneuverability 9.6 | Maneuverability 9.1 | Maneuverability 9.1 | Maneuverability 9.3 |
Tech Specs | ||||||
total power outlets6 | total power outlets 3 | total power outlets 8 | total power outlets 2 | total power outlets 4 | total power outlets 7 | total power outlets 3 |
color- CARB Compliant | color Blue | color Orange | color Blue | color Orange | color Black | color CARB Compliant |
included componentsBattery Charger, Engine Oil & Funnel, Key FOB, Owner's Manual, Propane Hose, Quick-Start Guide, Warranty | included components Battery Charger, Engine Oil & Funnel, Key FOB, Owner's Manual, Quick-Start Guide, Replacement Parts List, Screw Driver, Warranty | included components 6800-Watt Dual Fuel RV-Ready Electric Start Portable Inverter Generator | included components Oil Bottle, Oil Funnel, Spark Plug Wrench, Propane Regulator/Hose, Parallel Cables | included components WEN 5600-Watt Dual Fuel Portable Generator, Electric Start, 224cc, | included components 3600-Watt Dual Fuel RV-Ready Portable Inverter Generator | included components Dual-Fuel Generator |
wattage12500 watts | wattage 8200 watts | wattage 5.1E+3 | wattage 2550 watts | wattage 5600 watts | wattage 3600 watts | wattage 4750 watts |
starting wattage12500 Watts | starting wattage 8200 Watts | starting wattage 6.8E+3 Watts | starting wattage 2550 Watts | starting wattage 5600 Watts | starting wattage 3.6E+3 Watts | starting wattage 4750 Watts |
output wattage9500 | output wattage 6600 | output wattage 6800 | output wattage 2550 | output wattage 5600 | output wattage 3600 | output wattage 4750 Watts |
product dimensions27.2"L x 26.1"W x 26.5"H | product dimensions 27"L x 20.9"W x 21.7"H | product dimensions 22.8"L x 16.6"W x 19.7"H | product dimensions 19.5L x 17.3W x 17.9H | product dimensions 25.98"L x 21.85"W x 27.17"H | product dimensions 18"L x 11.63"W x 19.68"H | product dimensions 23.2"L x 17.5"W x 18.5"H |
fuel typeGasoline, Propane | fuel type Gasoline, Propane, Natural Gas | fuel type Gasoline, Liquefied Petroleum Gas | fuel type Gasoline | fuel type Gasoline | fuel type Gasoline | fuel type Gasoline, Liquefied Petroleum Gas |
item weight210 pounds | item weight 134.5 pounds | item weight 99.2 pounds | item weight 42.4 pounds | item weight 123.7 pounds | item weight 49 pounds | item weight 105.8 pounds |
engine type4 Stroke | engine type 4 Stroke | engine type Internal Combustion Engine | engine type 4 Stroke | engine type Gasoline | engine type 4 Stroke | engine type 4 Stroke |
power sourceFuel Powered | power source Fuel Powered | power source Fuel Powered | power source Fuel Powered | power source Fuel Powered | power source Fuel Powered | power source Fuel Powered |
ignition system typeelectric start | ignition system type Electric Start | ignition system type Electric Start | ignition system type - | ignition system type Electronic | ignition system type Spark Ignition System | ignition system type electric start |
voltage120 Volts | voltage 240 Volts | voltage - | voltage 120 Volts | voltage 120 Volts | voltage 120 Volts | voltage 120 Volts |
running wattage9500 Watts | running wattage 6600 Watts | running wattage 4.5E+3 Watts | running wattage - | running wattage 5600 Watts | running wattage 2600 Watts | running wattage 3800 Watts |
tank volume6.6 Gallons | tank volume 3.9 Imperial Gallons | tank volume 2.9 Gallons | tank volume - | tank volume 4.3 Gallons | tank volume 1.5 Gallons | tank volume 4 Gallons |
engine displacement457 Cubic Centimeters | engine displacement 298 Cubic Centimeters | engine displacement 224 Cubic Centimeters | engine displacement - | engine displacement 224 Cubic Centimeters | engine displacement 149 Cubic Centimeters | engine displacement 224 Cubic Centimeters |
global trade identification number00853544008298 | global trade identification number - | global trade identification number - | global trade identification number - | global trade identification number 00044459456001 | global trade identification number 00044459093602 | global trade identification number 00044459144762, 31359003394082 |
Available On | Available On | Available On | Available On | Available On | Available On | Available On  |
Our Top 3 Picks
Here are the top 3 recommended products with more information to help you find the right product for you
9.6
1WestinghouseWestinghouse 12500 Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered
9.9 worth the money9.6 ManeuverabilityWhy we love it
Dual-fuel capability for versatility.
Easy remote start feature.
Long 12-hour runtime on gasoline.
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9.5
2Westinghouse
Westinghouse 8200 Peak Watt Tri-Fuel Portable Inverter Generator, Remote Electric Start, Transfer Switch Ready, Gas, Propane, Natural Gas, Low THD, Safe for Electronics, Parallel Capable, CO Sensor
9.9 worth the money9.6 ManeuverabilityMain highlights- TRANSFER SWITCH OR INTERLOCK KIT READY: One 120/240V 14–50R 50A outlet for home backup can run your air conditioner, refrigerator, sump pump, and more–all at once; One RV ready 120V TT-30R 30A outlet; One GFCI 120V 5–20R 20A standard duplex outlet
- SAVE FUEL, SAVE MONEY, LESS NOISE: Inverter technology adjusts engine speed to meet power demand, significantly cutting fuel use compared to traditional generators. That's less refills and fuel runs–saving time, money, and hassle. It's also much quieter than open frames, around 60 dBA at 25% load
- LOW THD AND COPPER WINDINGS: With less than 3% THD, it's safe to power electronics like phones, computers and TVs to stay connected during outages, or on jobsites and campsites. Copper windings help the unit make cleaner power, run cooler and last longer
- INVERTER BENEFITS, HOME BACKUP POWER: The Westinghouse iGen8200TFc is a tri fuel generator with all the benefits of an inverter, but also with home backup power and a 50A outlet; Gasoline: 6600 running/8200 peak watts, Propane: 5940 running/7380 peak watts, Natural Gas: 5280 running/6560 peak watts
- DURABLE ENGINE WITH SAFETY BUILT-IN: Powered by a heavy duty 298 cc Westinghouse 4-stroke OHV engine with a cast iron sleeve; up to 17 hours of run time on a 3.9 gallon fuel tank at 25% load with automatic low oil shutdown and carbon monoxide (CO) sensor
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9.4
3WEN
WEN 6800-Watt Dual Fuel RV-Ready Electric Start Portable Inverter Generator with Fuel Shut Off and CO Watchdog for Electric Vehicle Backup (DF680iX)
9.8 worth the money9.4 ManeuverabilityMain highlights- The WEN Watchdog CO Shutdown Sensor helps protect both you and your family by automatically turning off the generator if dangerous levels of carbon monoxide are detected
- Includes fuel shut-off to help limit maintenance, onboard wheels, a telescoping pull handle, one L14-30R 120V/240V receptacle, two three-prong 120V receptacles, one TT-30R RV receptacle, one 12V DC receptacle, two 5V USB ports, a voltage selector switch, a tool-free LPG quick-connector, a six-foot-long LPG regulator hose, and a three-year warranty
- Fuel shutoff maximizes the generator’s lifespan by using up the remaining fuel in the carburetor before shutting down
- Bonded-neutral 240V configuration provides low-power Level 2 charging for battery and hybrid electric vehicles
- 224cc dual-fuel engine runs on both gasoline (6800 surge watts, 5100 rated watts) and propane (6000 surge watts, 4500 rated watts)
Our ranking system
At bestchoice.com, our team curates a selection of top products from a vast array available online, using a sophisticated ranking system based on carefully defined criteria.While traditional hands-on testing has its merits, our use of AI technology offers distinct advantages. AI allows us to process and analyze vast amounts of data from multiple sources, providing a comprehensive view that goes beyond what manual testing can achieve. This approach enables us to deliver insights that are aligned with current trends and consumer preferences, ensuring our reviews are both relevant and up-to-date.
Features
Our AI-driven analysis examines key attributes, capabilities, and other critical factors tailored to each product category. This method allows us to assess effectiveness from various perspectives, ensuring a well-rounded evaluation.
Consumer Reviews
We aggregate and evaluate consumer feedback from across the internet, giving weight to ratings and reviews that reflect the most reliable insights. AI enhances this process by filtering and prioritizing data, offering a balanced view without the need for direct personal endorsements.
Popularity
Our system also considers the popularity of products, analyzing factors such as market presence, reputation, and user satisfaction. By leveraging AI, we capture a comprehensive picture of a product's standing in the market, which may not always be evident through traditional testing.
Value for money
AI allows us to compare products based on attributes like price, specifications, and user feedback, helping to determine their value for money. This data-driven approach offers an efficient and reliable way to assess how products stack up against one another in terms of cost-effectiveness.
