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Top-10 Fuel Efficient Generator
Loved in the USA

Handpicked for quality & trusted by thousands of customers
#1
Top Rated in the USA
Westinghou
Westinghouse

Born in the USA

Westinghouse 13500 Peak Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered

Fast Delivery
10.0
2 055 reviews

Solid Value from a Trusted Brand

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1 389 bought in past month
#2
Westinghou
Westinghouse

Born in the USA

Westinghouse 12500 Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered

20%OFF

Fast Delivery
10.0
25 432 reviews

Item still has Pre-Tariff price

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1 287 bought in past month
Last Purchases
Ha***ah
San Francisco, CA
2d ago
L***y
Portland, OR
2h ago
Mi***el
Austin, TX
1h ago
#3
WEN Quiet
WEN

Born in the USA

WEN Quiet 6800-Watt Dual Fuel RV-Ready Electric Start Portable Inverter Generator with Fuel Shut Off and CO Watchdog for Electric Vehicle Backup (DF680iX)

Fast Delivery
9.9
2 821 reviews

Solid Value from a Trusted Brand

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1 185 bought in past month
Great quality at a fair price.
AaronNew York, NY
#4
Westinghou
Westinghouse

Born in the USA

Westinghouse 13500 Peak Watt Tri-Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas, Propane, and Natural Gas Powered

6%OFF

Fast Delivery
9.8
2 055 reviews

Item still has Pre-Tariff price

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1 083 bought in past month
Curated products trusted bytrust us brands
#5
DuroMax XP
DuroMax

Born in the USA

DuroMax XP13000EH 13,000-Watt Dual Fuel Portable Generator - Gas & Propane, Electric Start, Whole Home Backup Power, Transfer Switch Ready, RV & Emergency Ready

13%OFF

Fast Delivery
9.7
12 051 reviews

Item still has Pre-Tariff price

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981 bought in past month
#6
WEN Quiet
WEN

Born in the USA

WEN Quiet and Lightweight 3600-Watt Dual Fuel RV-Ready Portable Inverter Generator with Fuel Shut Off and CO Watchdog (DF360iX)

10%OFF

Fast Delivery
9.6
764 reviews

Item still has Pre-Tariff price

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879 bought in past month
#7
Honda 6642
Honda

Honda 664240 EU2200i 2200 Watt Portable Inverter Generator with Co-Minder

15%OFF

Fast Delivery
9.5
2 051 reviews

Item still has Pre-Tariff price

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777 bought in past month
#8
WEN 14,500
WEN

Born in the USA

WEN 14,500-Watt 120V 240V Tri-Fuel Generator for Gas, Propane, and Natural Gas, Transfer-Switch Ready with Electric Start and Wheel Kit (TF1450)

Fast Delivery
9.4
1 901 reviews

Solid Value from a Trusted Brand

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675 bought in past month
#9
Westinghou
Westinghouse

Born in the USA

Westinghouse 14500 Peak Watt Tri-Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas, Propane, and Natural Gas Powered

Fast Delivery
9.2
2 259 reviews

Solid Value from a Trusted Brand

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573 bought in past month
#10
Westinghou
Westinghouse

Born in the USA

Westinghouse 28000 Peak Watt Tri-Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas, Propane, and Natural Gas Powered

Fast Delivery
9.1
216 reviews

Solid Value from a Trusted Brand

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471 bought in past month

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Generac 5,
Generac

Born in the USA

Generac 5,200-Watt Dual-Fuel Portable Inverter Generator - Gas and Propane Compatible - Quiet Operation - Produces Clean, Stable Power - Great for Home Backup, Camping, and RV Use

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Westinghouse

Born in the USA

Westinghouse 5000 Peak Watt Super Quiet Dual Fuel Portable Inverter Generator, Remote Electric Start, Gas & Propane Powered, RV Ready 30A Outlet, Parallel Capable, Blue Black

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Honda

Honda EU2200ITAN 2200-Watt 120-Volt Super Quiet Portable Inverter Generator with CO-Minder - 49-State

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Westinghouse

Born in the USA

Westinghouse 18000 Peak Watt Tri-Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas, Propane, and Natural Gas Powered, CO Sensor

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Our Top Picks

#1

Winner

Westinghouse 13500 Peak Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered

Rating
10.0
Chosen by1,389
Fuel Type
Wattage
Noise Level

Most important from
2055 reviews

Fuel Type
Dual fuel capability with included propane and natural gas hoses adds great flexibility and convenience right out of the box.
Wattage
The generator delivers robust power capable of running an entire house's essential appliances without showing any strain or stress.
Noise Level
The noise level is moderate and manageable, quieter than many other generators in its power class.
Portability
Despite its heavy 230-pound weight, the included wheel kit and handle make it manageable to move when needed.
Runtime
Runtime is impressive, supporting long usage periods and reducing the frequency of refueling during outages.
Inverter Technology
It does not produce clean enough power for sensitive electronics, as frequency runs consistently above typical UPS thresholds, posing a risk for modern appliances with electronic controls.

The Westinghouse 13500 Peak Watt Dual Fuel Portable Generator is a solid choice for a home backup power source, especially if you want flexibility in fuel options. It runs on both gasoline and propane, which can be handy depending on what fuel is more available or economical for you. With 13,500 peak watts and 10,500 running watts on gasoline, it can handle heavy loads like multiple appliances or power tools comfortably. On propane, the peak wattage is a bit lower but still substantial.

One of the standout features is its runtime—up to 19 hours on a full 9.5-gallon tank, which means it can keep your essentials running for a long stretch without needing a refill. It also comes with a remote electric start, making it easier to operate, plus safety features like automatic low oil shutdown and carbon monoxide sensors.

In terms of portability, it weighs about 230 pounds, so it’s not lightweight and will need some effort or wheels to move around, which might be a drawback if you want something more mobile. It has multiple outlets, including ones ready for RV and transfer switches, adding to its versatility. This Westinghouse model fits well if you want a powerful, dual-fuel generator with long runtime and convenient features for home backup use. Keep in mind it’s fairly heavy and lacks inverter technology, so it won’t provide the super clean power that sensitive electronics might require.

Rating
10.0
Chosen by1,389
Fuel Type
Wattage
Noise Level

Most important from
2055 reviews

Fuel Type
Dual fuel capability with included propane and natural gas hoses adds great flexibility and convenience right out of the box.
Wattage
The generator delivers robust power capable of running an entire house's essential appliances without showing any strain or stress.
Noise Level
The noise level is moderate and manageable, quieter than many other generators in its power class.
Portability
Despite its heavy 230-pound weight, the included wheel kit and handle make it manageable to move when needed.
Runtime
Runtime is impressive, supporting long usage periods and reducing the frequency of refueling during outages.
Inverter Technology
It does not produce clean enough power for sensitive electronics, as frequency runs consistently above typical UPS thresholds, posing a risk for modern appliances with electronic controls.
#2

Westinghouse 12500 Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered

Rating
10.0
Fuel Type
Wattage
Fuel Efficiency

Most important from
25432 reviews

Fuel Type
True dual fuel capability, with seamless propane operation.
Wattage
Plentiful power that's more than enough to power an entire home.
Fuel Efficiency
Outstanding fuel efficiency with hours of runtime without frequent refueling.
Noise Level
Surprisingly quiet compared to other generators.
Portability
Compact design makes it easy to store when not in use.

The Westinghouse 12500 Watt Dual Fuel Home Backup Portable Generator is a powerful and versatile option for home backup power needs. It supports both gasoline and propane, offering flexibility depending on fuel availability. With 9500 running watts and 12500 peak watts on gasoline (8500 running watts and 11200 peak watts on propane), it's capable of handling substantial loads, making it suitable for residential use during power outages or emergencies.

The generator features a remote electric start and a transfer switch ready design, adding convenience for users who want easy operations and seamless power transitions. It also comes with multiple protected outlets, including standard household receptacles and RV-ready outlets, enhancing its usability for various applications. The runtime of up to 12 hours on a 6.6-gallon fuel tank is quite practical, though fuel efficiency might vary depending on the load.

The built-in VFT display provides real-time updates on voltage output, frequency, and lifetime hours, which is helpful for monitoring performance. However, the generator's weight of 210 pounds could be a drawback for those seeking high portability, despite being labeled as portable. Additionally, the noise level is not specified, but generators of this size typically produce a considerable amount of noise, which could be a concern for some users. While it doesn’t include inverter technology, which is essential for sensitive electronics, it’s an excellent choice for general home backup with robust power output and dual fuel capability.

Rating
10.0
Fuel Type
Wattage
Fuel Efficiency

Most important from
25432 reviews

Fuel Type
True dual fuel capability, with seamless propane operation.
Wattage
Plentiful power that's more than enough to power an entire home.
Fuel Efficiency
Outstanding fuel efficiency with hours of runtime without frequent refueling.
Noise Level
Surprisingly quiet compared to other generators.
Portability
Compact design makes it easy to store when not in use.
#3

WEN Quiet 6800-Watt Dual Fuel RV-Ready Electric Start Portable Inverter Generator with Fuel Shut Off and CO Watchdog for Electric Vehicle Backup (DF680iX)

Rating
9.9
Fuel Type
Fuel Efficiency
Noise Level

Most important from
2821 reviews

Fuel Type
Runs continuously for days on propane without issues, delivering reliable power even during prolonged blackouts.
Fuel Efficiency
Fuel consumption on propane is notably better compared to similar dual-fuel models, enhancing overall efficiency.
Noise Level
Exceptionally quiet operation, often so subtle that you need to check if it's running—perfect for noise-sensitive environments like campgrounds or harbors.
Portability
Despite its nearly 100-pound weight, onboard wheels and a sturdy handle make transport manageable, though assistance is recommended for stairs or rough terrain.
Runtime
Large fuel tank enables extended runtimes, with some users reporting nearly 11 hours of operation on a single fill at low load.
Inverter Technology
Inverter technology provides clean, stable power indistinguishable from utility electricity, ideal for sensitive electronics and EV charging.

The WEN Quiet 6800-Watt Dual Fuel Generator is a solid choice for those needing reliable, versatile power, especially for RV users or as backup for electric vehicles. It runs on both gasoline and propane, offering flexibility and the potential for better fuel efficiency when using propane. With a running wattage of 5100 watts on gas and slightly less on propane, it can handle a variety of appliances and electrical needs, making it useful for camping or emergency power. The 6-hour runtime is decent for its size and fuel tank capacity, but you may need to refuel for longer use.

Its inverter technology helps provide cleaner, more stable power, which is important if you plan to power sensitive electronics or charge electric vehicles. The generator includes useful safety features like the CO Watchdog sensor that automatically shuts off the unit if dangerous carbon monoxide levels are detected, adding peace of mind for indoor or close-quarters use. Portability is supported by onboard wheels and a telescoping handle, though at nearly 100 pounds, it’s not the lightest option available. It is marketed as a quieter model, which is beneficial in campgrounds or residential areas.

The multiple power outlets, including 120V, 240V, USB ports, and an RV-ready connector, make it versatile for several devices. One drawback is the runtime, which could be limiting for extended use without refueling. Also, while it offers dual fuel options, propane output wattage is lower than gasoline, so performance varies depending on fuel choice. For those seeking a dependable, relatively fuel-efficient generator with modern safety and convenience features, especially for outdoor and recreational use, the WEN DF680iX is worth considering.

Rating
9.9
Fuel Type
Fuel Efficiency
Noise Level

Most important from
2821 reviews

Fuel Type
Runs continuously for days on propane without issues, delivering reliable power even during prolonged blackouts.
Fuel Efficiency
Fuel consumption on propane is notably better compared to similar dual-fuel models, enhancing overall efficiency.
Noise Level
Exceptionally quiet operation, often so subtle that you need to check if it's running—perfect for noise-sensitive environments like campgrounds or harbors.
Portability
Despite its nearly 100-pound weight, onboard wheels and a sturdy handle make transport manageable, though assistance is recommended for stairs or rough terrain.
Runtime
Large fuel tank enables extended runtimes, with some users reporting nearly 11 hours of operation on a single fill at low load.
Inverter Technology
Inverter technology provides clean, stable power indistinguishable from utility electricity, ideal for sensitive electronics and EV charging.

Buying Guide for the Best Fuel Efficient Generator

Choosing a fuel-efficient generator can be a great investment, especially if you need a reliable power source for emergencies, outdoor activities, or even for your home or business. The key to selecting the right generator is understanding the various specifications and how they align with your specific needs. Here are some important specs to consider when choosing a fuel-efficient generator.
Fuel TypeGenerators can run on different types of fuel such as gasoline, diesel, propane, or natural gas. The type of fuel affects the generator's efficiency, cost of operation, and availability. Gasoline is widely available but less efficient and has a shorter shelf life. Diesel is more efficient and has a longer shelf life but can be more expensive. Propane is clean-burning and has an indefinite shelf life but requires a storage tank. Natural gas is convenient if you have a gas line but is less portable. Choose the fuel type based on availability, cost, and your specific needs.
WattageWattage indicates the amount of power a generator can produce. It's important to determine your power needs by adding up the wattage of all the devices you plan to run simultaneously. Generators are rated by starting (surge) watts and running (continuous) watts. Starting watts are higher and account for the initial power surge needed to start appliances. Running watts are the continuous power the generator can supply. Choose a generator with a wattage rating that exceeds your total power needs to ensure reliable performance.
Fuel EfficiencyFuel efficiency measures how long a generator can run on a specific amount of fuel. This is usually expressed in terms of run time at a certain load (e.g., half load). A more fuel-efficient generator will run longer on the same amount of fuel, saving you money and reducing the frequency of refueling. Look for generators with features like eco-mode or variable engine speed, which adjust the power output based on the load to improve fuel efficiency. Choose a generator with good fuel efficiency to minimize operational costs and maximize convenience.
Noise LevelThe noise level of a generator is measured in decibels (dB) and indicates how loud the generator will be during operation. Lower noise levels are important for comfort, especially if you plan to use the generator in residential areas or during outdoor activities. Generators with noise levels below 60 dB are considered quiet and are suitable for most applications. Choose a generator with a noise level that won't disturb you or your neighbors, especially if you plan to use it in noise-sensitive environments.
PortabilityPortability refers to how easy it is to move the generator. This is influenced by the generator's weight, size, and design features like wheels and handles. If you need a generator for camping, tailgating, or other outdoor activities, a lightweight and compact model with wheels and handles will be easier to transport. For home or business use, portability may be less critical, but consider how you will move the generator for maintenance or storage. Choose a generator with the right balance of portability and power for your intended use.
RuntimeRuntime indicates how long a generator can operate on a full tank of fuel. This is usually given for a specific load, such as half load. Longer runtimes mean fewer interruptions for refueling, which is especially important during extended power outages or when using the generator for long periods. Consider your typical usage scenarios and choose a generator with a runtime that meets your needs. For example, if you need a generator for overnight use, look for one with a runtime of at least 8-10 hours at half load.
Inverter TechnologyInverter generators produce clean and stable power, making them suitable for sensitive electronics like laptops, smartphones, and medical devices. They are also typically more fuel-efficient and quieter than conventional generators. Inverter technology adjusts the engine speed to match the power demand, improving efficiency and reducing noise. If you need to power sensitive electronics or value quiet operation and fuel efficiency, consider choosing an inverter generator.

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