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10 Best Natural Gas Generators 2025 in the United States

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Our Top Picks

#1

Winner

Generac Guardian 10kW Home Standby Generator with 100 Amp Transfer Switch - Automatic Whole House Backup Power for Storms, Emergencies, and Outages, WiFi Enabled, Runs on Natural Gas or Liquid Propane

Rating
9.9
Chosen by1,333
Noise Level
Start Type

Most important from
422 reviews

Noise Level
The generator is quite loud, making conversation difficult when standing next to it, but it efficiently powered the entire house, including two 5-ton AC units.
Start Type
The generator kicked off and ran just fine during unexpected power outages, automatically turning off once power was restored.

The Generac 7172 10kW Air Cooled Guardian Series is designed primarily for residential use, offering reliable power during outages. Its standout feature is the 10,000 watt output, which is ideal for keeping essential appliances running smoothly. The generator's True Power Technology ensures that the power delivered is clean and stable, minimizing potential damage to sensitive electronics, a crucial aspect for homeowners. The inclusion of a 100-amp transfer switch means it can seamlessly power multiple circuits in your home, which enhances its practicality during extended outages.

One of the most appealing aspects is the Mobile Link Wi-Fi connectivity, allowing users to monitor performance remotely. This feature is particularly useful for those who travel often or want peace of mind knowing their home is protected. Additionally, the 5-Year Limited Warranty provides reassurance regarding its longevity and reliability.

On the downside, the generator weighs 338 pounds, which may pose challenges in terms of portability and installation. While Generac recommends installation by a certified electrician, this could add to overall costs. The noise level, although described as 'super quiet,' can still be a concern for those who live in close proximity to neighbors. Potential users should also consider the fuel consumption, as natural gas or LP gas usage can vary based on demand and price fluctuations.

Rating
9.9
Chosen by1,333
Noise Level
Start Type

Most important from
422 reviews

Noise Level
The generator is quite loud, making conversation difficult when standing next to it, but it efficiently powered the entire house, including two 5-ton AC units.
Start Type
The generator kicked off and ran just fine during unexpected power outages, automatically turning off once power was restored.
#2

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

Rating
9.8
Run Time
Start Type

Most important from
2246 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
2246 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.
#3

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

Rating
9.7
Power Output (Wattage)
Fuel Consumption
Run Time

Most important from
214 reviews

Power Output (Wattage)
This generator delivers more power than expected, easily handling all equipment simultaneously without any issues.
Fuel Consumption
Fuel consumption is noticeable during long use, and sourcing gasoline can be challenging during emergencies.
Run Time
It proved extremely reliable during extended outages, running essential appliances like air conditioning and medical equipment continuously for days.
Noise Level
The noise level ranges from moderate to high depending on the load, typical for a generator of this size.
Start Type
Starting the generator is effortless with just the press of a button, making operation straightforward.
Portability
Its weight is significant at around 550 pounds, but the power output justifies the heft for heavy-duty applications.
Maintenance Requirements
Maintenance tasks such as oil changes are simple and manageable, supporting long-term use.

The Westinghouse 28000 Peak Watt Tri-Fuel Generator is a powerful and versatile option for homeowners needing a strong backup power source. It delivers high wattage—up to 28,000 peak watts on gasoline and 16,000 running watts on natural gas—making it suitable for larger homes or heavy-duty power needs. One of its main strengths is its tri-fuel capability, meaning it runs on gasoline, propane, or natural gas, giving you flexibility depending on fuel availability and price. It can run up to 13 hours on a full gasoline tank at 25% load, which is decent for extended outages. The generator features a remote electric start and a digital display that shows runtime and voltage, making it easy to operate and monitor. Safety and convenience are also priorities, with automatic low-oil shutdown, overload protection, and a CO sensor.

It includes multiple outlets and is transfer switch ready, so it can connect directly to your home for seamless power. Considering portability, it’s heavy at 557 pounds but comes with large never-flat wheels and foldable handles to help move it around despite the weight. Noise levels are not explicitly stated, but due to its size and power, expect it to be somewhat loud, typical for generators of this scale. Maintenance should be manageable with features like automatic idle control, but regular upkeep is still necessary given its powerful engine.

This generator suits homeowners who need reliable, whole-home backup power, especially those who want fuel flexibility and the ability to connect directly to their home’s electrical system. It may be less ideal if you need something lightweight or very quiet.

Rating
9.7
Power Output (Wattage)
Fuel Consumption
Run Time

Most important from
214 reviews

Power Output (Wattage)
This generator delivers more power than expected, easily handling all equipment simultaneously without any issues.
Fuel Consumption
Fuel consumption is noticeable during long use, and sourcing gasoline can be challenging during emergencies.
Run Time
It proved extremely reliable during extended outages, running essential appliances like air conditioning and medical equipment continuously for days.
Noise Level
The noise level ranges from moderate to high depending on the load, typical for a generator of this size.
Start Type
Starting the generator is effortless with just the press of a button, making operation straightforward.
Portability
Its weight is significant at around 550 pounds, but the power output justifies the heft for heavy-duty applications.
Maintenance Requirements
Maintenance tasks such as oil changes are simple and manageable, supporting long-term use.

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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