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10 Best Natural Gas Generators 2025 in the United States

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Our Top Picks

#1

Winner

Generac 9,500-Watt Tri-Fuel Powered Portable Generator - Compatible with Gas, Propane or Natural Gas - COsense Technology - Power for Emergencies and Recreation - Orange/Black - 49 State Compliant

Rating
9.9
Chosen by1,368
Start Type
Portability
Maintenance Requirements

Most important from
118 reviews

Start Type
Starting the unit is effortless, and it runs smoothly under daily use.
Portability
The large wheels make moving this heavy generator noticeably easier.
Maintenance Requirements
It delivers reliable performance even after extensive hours of operation with proper maintenance.

The Generac GP9500E TF is a powerful portable generator offering 9,500 running watts and 12,500 starting watts, making it well-suited for both emergency backup power and recreational use. One of its key advantages is its tri-fuel capability, allowing you to run it on gasoline, propane, or natural gas, which adds flexibility depending on fuel availability. It features a convenient electric start, so you won’t need to manually pull a cord, and it includes an easy-to-use fuel selector for seamless switching between fuel types.

With a 7.5-gallon fuel tank, it can run for about 9 hours at half load on gasoline, which is decent for extended use during outages. The generator is also designed to be durable, with covered outlets and a sturdy steel frame to protect it in tough outdoor conditions. Portability is considered with heavy-duty wheels and a handle, but at 219 pounds, it is quite heavy and might require some effort to move around.

It includes safety features like COsense technology, which helps detect carbon monoxide and can shut the unit down to prevent danger, a valuable feature for home use. Maintenance involves regular oil changes and checks given its internal combustion engine. Its weight limits easy transport, and if ultra-quiet operation or very light weight is a priority, this model might be less ideal. However, for reliable, adaptable power with relatively long runtime and safety features, this generator is a strong choice, especially if fuel flexibility is important.

Rating
9.9
Chosen by1,368
Start Type
Portability
Maintenance Requirements

Most important from
118 reviews

Start Type
Starting the unit is effortless, and it runs smoothly under daily use.
Portability
The large wheels make moving this heavy generator noticeably easier.
Maintenance Requirements
It delivers reliable performance even after extensive hours of operation with proper maintenance.
#2

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

Rating
9.8
Power Output (Wattage)
Fuel Consumption
Noise Level

Most important from
24775 reviews

Power Output (Wattage)
Plentiful power, more than enough to power an entire home.
Fuel Consumption
Fuel efficiency is outstanding; it runs for hours without needing frequent refueling.
Noise Level
Surprisingly quiet compared to other generators.
Start Type
Remote start is excellent, making it easy to start and stop the generator.
Portability
Compact and 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 needs. With a running wattage of 9500 watts on gasoline and 8500 watts on propane, it provides significant power for various household applications. The peak wattage reaches up to 12500 watts on gasoline and 11200 watts on propane, making it suitable for handling surges in power demand. Its dual fuel capability offers flexibility, allowing users to choose between gasoline and propane based on availability and preference.

The remote electric start with an included key fob adds convenience, while the electric and recoil start options ensure reliable operation in different situations. The generator features a substantial 6.6-gallon fuel tank with a fuel gauge, supporting up to 12 hours of run time, which is beneficial during extended power outages. Additionally, the generator includes multiple outlets with rubber covers for safety, including household receptacles and transfer switch ready outlets.

The Westinghouse generator is quite heavy, weighing 210 pounds, which may impact its portability despite the presence of wheels. However, its sturdy build and included components such as a battery charger, oil, and a tool kit, make it a plug-and-play solution with minimal assembly required. Maintenance is simplified with features like automatic low oil shutdown and a digital hour meter. The generator is EPA compliant and backed by a 3-year limited warranty, ensuring peace of mind for users. This generator is well-suited for residential use, particularly for those who need a reliable, high-output power source during emergencies.

Rating
9.8
Power Output (Wattage)
Fuel Consumption
Noise Level

Most important from
24775 reviews

Power Output (Wattage)
Plentiful power, more than enough to power an entire home.
Fuel Consumption
Fuel efficiency is outstanding; it runs for hours without needing frequent refueling.
Noise Level
Surprisingly quiet compared to other generators.
Start Type
Remote start is excellent, making it easy to start and stop the generator.
Portability
Compact and easy to store when not in use.
#3

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

Rating
9.8
Run Time
Start Type

Most important from
1797 reviews

Run Time
Its versatility with tri-fuel capabilities, long runtime, and easy start mechanism make it a top choice for backup power or on-the-go needs.
Start Type
The generator started within 2 minutes and ran smoothly on natural gas.

The Westinghouse Outdoor Power Equipment 14500 Peak Watt Tri-Fuel Generator is a versatile and powerful choice for household backup or portable power needs. It offers impressive power output, with 14,500 peak watts and 11,500 running watts on gasoline, 13,500 peak watts and 10,500 running watts on propane, and 12,000 peak watts and 9,500 running watts on natural gas. This makes it suitable for larger homes requiring substantial power during outages. Its tri-fuel capability (gasoline, propane, and natural gas) adds flexibility in fuel options, which is a definite strength.

The generator runs up to 19 hours on a full gasoline tank, providing extended power without frequent refueling. However, run time on a 20 lb propane tank drops significantly to about 7 hours. The heavy-duty 550cc 4-stroke OHV engine ensures durability and reliability, backed by a 3-year limited warranty and nationwide customer service. The remote electric start is convenient, especially during emergencies, and the generator is transfer switch ready, making installation easier for home use. Portability is somewhat compromised by its weight (230 pounds), but it's manageable for a heavy-duty generator.

Maintenance is straightforward with features like an hour meter and automatic voltage regulation. The generator also includes useful safety features like overload protection and a CO sensor for added safety. Despite being on the heavier side and having a shorter run time on propane, its high power output, fuel versatility, and robust construction make it an excellent choice for those needing reliable backup power for larger homes.

Rating
9.8
Run Time
Start Type

Most important from
1797 reviews

Run Time
Its versatility with tri-fuel capabilities, long runtime, and easy start mechanism make it a top choice for backup power or on-the-go needs.
Start Type
The generator started within 2 minutes and ran smoothly on natural gas.

Buying Guide for the Best Natural Gas Generators

Choosing the right natural gas generator involves understanding your power needs and the specific features that will best meet those needs. Natural gas generators are a reliable source of backup power for homes and businesses, providing electricity during outages or in remote locations. To make an informed decision, you need to consider several key specifications that will determine the generator's performance, efficiency, and suitability for your particular situation.
Power Output (Wattage)Power output, measured in watts (W), indicates the amount of electricity the generator can produce. This is crucial because it determines whether the generator can handle the electrical load of your appliances and devices. Generators come in various power output ranges: small generators (up to 3,000 watts) are suitable for basic needs like lights and small appliances; medium generators (3,000 to 7,000 watts) can power multiple appliances and some larger devices; large generators (7,000 watts and above) can handle whole-house power needs or heavy-duty equipment. To choose the right one, list the essential devices you need to power and their wattage requirements, then select a generator that can comfortably handle that total load.
Fuel ConsumptionFuel consumption refers to how much natural gas the generator uses to produce electricity, typically measured in cubic feet per hour (cfh) or cubic meters per hour (m³/h). This is important because it affects the operating cost and efficiency of the generator. Lower fuel consumption means more efficient operation and lower running costs. To navigate this, compare the fuel consumption rates of different models under similar load conditions. Choose a generator that offers a good balance between power output and fuel efficiency, especially if you plan to use it frequently or for extended periods.
Run TimeRun time indicates how long the generator can operate on a full tank of fuel before needing a refill. This is crucial for planning how long you can rely on the generator during an outage. Run times can vary widely: some generators offer a few hours of operation, while others can run for 24 hours or more. To pick the right one, consider how long you typically need backup power. If you experience frequent or prolonged outages, a generator with a longer run time will be more convenient and reduce the need for frequent refueling.
Noise LevelNoise level, measured in decibels (dB), indicates how loud the generator will be during operation. This is important for comfort and compliance with local noise regulations. Generators can be quite noisy, with levels ranging from around 50 dB (similar to a quiet conversation) to over 100 dB (equivalent to a chainsaw). To navigate this, consider where you will place the generator and how close it will be to living or working areas. If noise is a concern, look for models specifically designed to operate quietly or consider installing soundproofing measures.
Start TypeStart type refers to how the generator is started, which can be manual (pull-start), electric (push-button), or automatic (starts automatically during a power outage). This is important for ease of use and convenience. Manual start generators are typically less expensive but require physical effort to start. Electric start generators are more convenient, especially for those who may have difficulty with pull-start mechanisms. Automatic start generators offer the highest level of convenience, as they can detect power outages and start without any user intervention. Choose the start type based on your preference for convenience and ease of use.
PortabilityPortability refers to how easy it is to move the generator. This is important if you need to transport the generator to different locations or store it when not in use. Portable generators typically have wheels and handles for easier movement, while stationary generators are designed to be installed in a fixed location. To pick the right one, consider how you plan to use the generator. If you need a generator for multiple locations or occasional use, a portable model will be more practical. For permanent backup power solutions, a stationary generator may be more suitable.
Maintenance RequirementsMaintenance requirements refer to the regular upkeep needed to keep the generator running smoothly. This includes tasks like oil changes, filter replacements, and general inspections. Maintenance is important for ensuring the longevity and reliability of the generator. Some models are designed to be low-maintenance, with features like automatic oil changes or self-diagnostics. To navigate this, consider how much time and effort you are willing to invest in maintenance. If you prefer minimal upkeep, look for models with low-maintenance features or consider a service plan.

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