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10 Best Fuel Efficient Generator 2025 in the United States
#1
Winner
Westinghouse 12500 Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered
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.
Customer Highlights
A summary of real customer reviews to highlight what shoppers are saying!Customer Highlights
A summary of real customer reviews to highlight what shoppers are saying!#2
DuroMax XP13000EH 13,000-Watt Dual Fuel Portable Generator - Gas & Propane, Electric Start, Whole Home Backup Power, Transfer Switch Ready, RV & Emergency Ready
The DuroMax XP13000EH Dual Fuel Portable Generator is a powerful option with a peak wattage of 13,000 watts, which makes it suitable for home backup during power outages or for use at job sites. It runs on either gasoline or propane, giving you flexibility in fuel choice. The electric start and user-friendly interface make it easy to operate, and it includes a 50-amp outlet for high-power needs.
Customer Highlights
A summary of real customer reviews to highlight what shoppers are saying!Customer Highlights
A summary of real customer reviews to highlight what shoppers are saying!#3
Westinghouse Outdoor Power Equipment 14500 Peak Watt Tri-Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas, Propane, and Natural Gas Powered
The Westinghouse Outdoor Power Equipment 14500 Peak Watt Tri-Fuel Generator is a versatile and powerful option for those needing a reliable backup power source for homes or portable power for outdoor activities. It can run on gasoline, propane, and natural gas, providing flexibility in fuel choice. The generator offers substantial power with 14,500 peak watts on gasoline, 13,500 peak watts on propane, and 12,000 peak watts on natural gas, making it suitable for larger homes or demanding power needs.
Customer Highlights
A summary of real customer reviews to highlight what shoppers are saying!Customer Highlights
A summary of real customer reviews to highlight what shoppers are saying!Top 10 Best Fuel Efficient Generator 2025 in the United States
#1
Winner
10.0 score
Westinghouse 12500 Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered
Westinghouse 12500 Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered
Fuel Type: electric
Wattage: 12500 watts
Runtime: up to 12 hours
Chosen by 1450 this week
DuroMax XP13000EH 13,000-Watt Dual Fuel Portable Generator - Gas & Propane, Electric Start, Whole Home Backup Power, Transfer Switch Ready, RV & Emergency Ready
DuroMax XP13000EH 13,000-Watt Dual Fuel Portable Generator - Gas & Propane, Electric Start, Whole Home Backup Power, Transfer Switch Ready, RV & Emergency Ready
Fuel Type: GASOLINE / PROPANE
Wattage: 13000 watts
Portability: Portable
Westinghouse Outdoor Power Equipment 14500 Peak Watt Tri-Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas, Propane, and Natural Gas Powered
Westinghouse Outdoor Power Equipment 14500 Peak Watt Tri-Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas, Propane, and Natural Gas Powered
Fuel Type: Gasoline, Natural Gas, LPG
Wattage: 14500 watts
Runtime: 19 hours
Champion Power Equipment 4500-Watt Electric Start Dual Fuel RV Ready Portable Inverter Generator with Quiet Technology and CO Shield
Champion Power Equipment 4500-Watt Electric Start Dual Fuel RV Ready Portable Inverter Generator with Quiet Technology and CO Shield
Fuel Type: Gasoline, Propane
Wattage: 4500 watts
Noise Level: 61 dBA
Portability: 99.2 pounds
Runtime: 14 hrs gasoline, 21 hrs propane
Inverter Technology: Yes
WEN Quiet and Lightweight 3600-Watt Dual Fuel RV-Ready Portable Inverter Generator with Fuel Shut Off and CO Watchdog (DF360iX),120 Volts
WEN Quiet and Lightweight 3600-Watt Dual Fuel RV-Ready Portable Inverter Generator with Fuel Shut Off and CO Watchdog (DF360iX),120 Volts
Fuel Type: Gasoline, Propane
Wattage: 3600 watts
Noise Level: normal conversation
Portability: 49 pounds
Runtime: 5 hours
Inverter Technology: Yes
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Honda EU2200ITAN 2200-Watt 120-Volt Super Quiet Portable Inverter Generator with CO-Minder - 49-State
Honda EU2200ITAN 2200-Watt 120-Volt Super Quiet Portable Inverter Generator with CO-Minder - 49-State
Fuel Type: Gasoline
Wattage: 2200 watts
Portability: Portable
Runtime: 8 hours
Inverter Technology: Yes
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
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
Fuel Type: Gasoline, LPG
Wattage: 5000 watts
Fuel Efficiency: Economy Mode
Noise Level: 52 dBA
Portability: Telescoping handle
Runtime: 18 hours
Inverter Technology: Yes
GENMAX Fuel Injection Generator, 4600W ultra-quiet 159cc engine with Parallel and Series Capability, Electric & Remote Start with CO Alert and LED light digital display,EPA Compliant（GM4600iAEFIC）
GENMAX Fuel Injection Generator, 4600W ultra-quiet 159cc engine with Parallel and Series Capability, Electric & Remote Start with CO Alert and LED light digital display,EPA Compliant（GM4600iAEFIC）
Fuel Type: Gas
Wattage: 4600 watts
Fuel Efficiency: Enhanced with EFI system
Noise Level: Notably low
Portability: Telescopic handle and wheels
Runtime: 15 hours
Honda 664240 EU2200i 2200 Watt Portable Inverter Generator with Co-Minder
Honda 664240 EU2200i 2200 Watt Portable Inverter Generator with Co-Minder
Fuel Type: Gasoline
Wattage: 2200 watts
Fuel Efficiency: 4.0 to 9.6 hours per tank
Noise Level: 48 to 57 dBA
Portability: 46.5 lbs, 19"L x 12"W x 21"H
Runtime: 9 hours
Inverter Technology: Yes
#10
8.2 score
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)
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)
Fuel Type: Gasoline, Propane, Natural Gas
Wattage: 14500
Portability: 249 pounds, Wheel Kit
Runtime: 12 hours at half-load
Inverter Technology: No
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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.