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

Fast Delivery
10.0
290 reviews

Solid Value from a Trusted Brand

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1 271 bought in past month
#2
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
9.7
2 776 reviews

Solid Value from a Trusted Brand

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1 169 bought in past month
Last Purchases
E***a
New York, NY
4d ago
So***ia
Portland, OR
3d ago
M***a
Miami, FL
2d ago
#3
Westinghou
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

7%OFF

Fast Delivery
9.1
555 reviews

Item still has Pre-Tariff price

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1 067 bought in past month
Solid quality and affordable.
LilyOrlando, FL
#4
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

Fast Delivery
8.5
27 499 reviews

Solid Value from a Trusted Brand

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965 bought in past month
Curated products trusted bytrust us brands
#5
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

Fast Delivery
7.9
2 726 reviews

Solid Value from a Trusted Brand

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863 bought in past month
#6
Honda 6642
Honda

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

Fast Delivery
7.3
2 092 reviews

Solid Value from a Trusted Brand

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761 bought in past month
#7
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)

Fast Delivery
7.3
1 005 reviews

Solid Value from a Trusted Brand

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659 bought in past month
#8
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
7.3
2 726 reviews

Solid Value from a Trusted Brand

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557 bought in past month
#9
WEN 14500-
WEN

Born in the USA

WEN 14500-Watt 120V 240V Tri-Fuel Generator, Transfer-Switch Ready with Electric Start and Wheel Kit (TF1450)

6%OFF

Fast Delivery
7.3
57 reviews

Item still has Pre-Tariff price

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455 bought in past month
#10
WEN 6800-W
WEN

Born in the USA

WEN 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
7.0
3 054 reviews

Solid Value from a Trusted Brand

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353 bought in past month

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Our Top Picks

#1

Winner

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

Rating
10.0
Chosen by1,271
Fuel Type
Wattage
Fuel Efficiency

Most important from
290 reviews

Fuel Type
Its tri-fuel capability offers great flexibility, allowing seamless switching between gasoline, propane, and natural gas depending on availability.
Wattage
This generator is a powerhouse that can handle an entire home effortlessly, including heavy loads like a 5-ton AC and 220-volt appliances.
Fuel Efficiency
Fuel efficiency is promising, especially when using propane or natural gas to avoid carbon buildup and extend engine life.
Noise Level
While it’s somewhat loud, the noise level is acceptable given the massive power output it provides.
Portability
Built with a sturdy frame and equipped with solid never-flat wheels, it’s heavy but still manageable with proper preparation or assistance.

The Westinghouse 28000 Peak Watt Tri-Fuel Generator is a powerful option designed mainly for larger homes needing reliable backup power. Its standout feature is the tri-fuel capability, meaning it can run on gasoline, propane, or natural gas, giving you flexibility depending on fuel availability or cost. It delivers substantial power, with 28,000 peak watts on gas and solid running watts across all fuels, which is enough to keep your essential home systems and many appliances running during outages.

In terms of fuel efficiency, it can run up to 13 hours at 25% load on a full gasoline tank, which is decent for its size and power. It also has an automatic idle control that helps save fuel when power demands are low, improving efficiency. The generator includes modern features like remote electric start, a digital display for monitoring, and built-in safety sensors, making it user-friendly and safer to operate. It also produces clean power with low total harmonic distortion, so your sensitive electronics like phones and computers are protected.

Portability is addressed with large never-flat wheels and foldable handles, but the unit is quite heavy at 557 pounds, so it’s best thought of as a semi-portable solution rather than something you’d move frequently or alone. This generator offers excellent power and flexibility, making it more suitable for residential whole-home backup rather than smaller, budget-conscious users looking for a quiet or lightweight model. If you want a robust, flexible, and feature-rich generator that can handle large power needs and multiple fuel types, this Westinghouse model is a solid choice. Just be prepared for the weight and consider noise and fuel cost details based on your priorities.

Rating
10.0
Chosen by1,271
Fuel Type
Wattage
Fuel Efficiency

Most important from
290 reviews

Fuel Type
Its tri-fuel capability offers great flexibility, allowing seamless switching between gasoline, propane, and natural gas depending on availability.
Wattage
This generator is a powerhouse that can handle an entire home effortlessly, including heavy loads like a 5-ton AC and 220-volt appliances.
Fuel Efficiency
Fuel efficiency is promising, especially when using propane or natural gas to avoid carbon buildup and extend engine life.
Noise Level
While it’s somewhat loud, the noise level is acceptable given the massive power output it provides.
Portability
Built with a sturdy frame and equipped with solid never-flat wheels, it’s heavy but still manageable with proper preparation or assistance.
#2

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

Rating
9.7
Fuel Type

Most important from
2776 reviews

Fuel Type
Successfully hooked up to natural gas, started in 2 minutes, and powers most appliances and a small gas furnace.

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.

Its runtime is impressive, offering up to 19 hours on a full 9.5-gallon gas tank or up to 7 hours on a 20 lb. propane tank, ensuring prolonged operation during power outages or extended outdoor use. The generator features a remote electric start for convenience, and it's transfer switch ready, making it easy to integrate into home power systems. It also includes safety features like overload protection, automatic voltage regulation, and a CO sensor.

However, it is quite heavy at 230 pounds, which may affect portability despite its sturdy wheels. Its fuel efficiency is commendable, especially with the ability to use different fuel types. The 3-year limited warranty and nationwide customer service network add to its reliability. This generator is best suited for homeowners looking for a robust backup power source or those needing dependable power in remote locations with varying fuel availability.

Rating
9.7
Fuel Type

Most important from
2776 reviews

Fuel Type
Successfully hooked up to natural gas, started in 2 minutes, and powers most appliances and a small gas furnace.
#3

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

Rating
9.1
Fuel Type
Wattage
Noise Level

Most important from
555 reviews

Fuel Type
Fuel flexibility is a major advantage, allowing seamless switching between gasoline, propane, and natural gas for convenience and peace of mind.
Wattage
The generator delivers powerful and dependable performance, easily handling heavy home appliances like air conditioning units without issue.
Noise Level
Runs quietly enough to avoid disturbance during power outages, surpassing expectations for a generator of this size.
Portability
Portability is manageable with built-in handles, though the generator's weight requires multiple people or equipment to move it safely.
Inverter Technology
Provides stable, clean power that prevents flickering lights and supports sensitive electronics without damage.

The Westinghouse 18000 Peak Watt Tri-Fuel Generator is a robust option for those needing reliable home backup power, especially when fuel flexibility is important. It runs on gasoline, propane, or natural gas, giving you flexibility to choose the most convenient or cost-effective fuel. With a strong running wattage of up to 14,500 watts on gasoline and slightly less on propane and natural gas, it can handle heavy home appliances and tools during outages or job sites. The 10.57-gallon fuel tank supports up to 12 hours of runtime, which is useful for extended power needs without frequent refueling.

It also offers remote electric start for convenience, plus a transfer switch-ready outlet to easily connect to your home's electrical system. Safety features like a CO sensor and automatic low oil shutdown provide peace of mind during use. The generator produces clean power safe for sensitive electronics, which is great if you want to keep computers and TVs running without damage.

Weighing 348 pounds, it is quite heavy, making it less portable if you need to move it frequently. While it has a durable engine and advanced features, noise levels aren’t specified and may be higher than inverter-only models, which could matter if you want a quieter unit. This generator suits homeowners who want a powerful, versatile, and reliable backup system with multiple fuel options, but it might be less suited for those prioritizing light weight or ultra-quiet operation.

Rating
9.1
Fuel Type
Wattage
Noise Level

Most important from
555 reviews

Fuel Type
Fuel flexibility is a major advantage, allowing seamless switching between gasoline, propane, and natural gas for convenience and peace of mind.
Wattage
The generator delivers powerful and dependable performance, easily handling heavy home appliances like air conditioning units without issue.
Noise Level
Runs quietly enough to avoid disturbance during power outages, surpassing expectations for a generator of this size.
Portability
Portability is manageable with built-in handles, though the generator's weight requires multiple people or equipment to move it safely.
Inverter Technology
Provides stable, clean power that prevents flickering lights and supports sensitive electronics without damage.

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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