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10 Best Natural Gas Generators 2025 in the United States

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Our technology thoroughly searches through the online shopping world, reviewing hundreds of sites. We then process and analyze this information, updating in real-time to bring you the latest top-rated products. This way, you always get the best and most current options available.

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Our Top Picks

#1

Winner

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

Rating
9.9
Chosen by1,310
Run Time
Start Type

Most important from
1581 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
9.9
Chosen by1,310
Run Time
Start Type

Most important from
1581 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.
#2

Generac Guardian 22kW Home Standby Generator with 200 Amp Transfer Switch, Durable All Aluminum, WiFi Enabled with G-Force Engine, Easy to Use, Whole House Power Backup, Smart Outage Solution - Bisque

Rating
9.8
Power Output (Wattage)
Noise Level

Most important from
423 reviews

Power Output (Wattage)
The generator kicked off and ran just fine during power outages, providing seamless electricity to the entire house.
Noise Level
The generator is quite loud, making it difficult to converse nearby, but it can handle heavy loads like running two 5-ton AC units.

The Generac 7043 is a powerful standby generator designed for residential use, delivering a robust 22kW of clean, reliable power with minimal harmonic distortion. This makes it suitable for homeowners who want to ensure seamless electricity supply during outages, covering their entire house with the included 200-amp transfer switch. The generator's Wi-Fi connectivity allows for remote monitoring, letting users track performance and receive maintenance alerts straight from their smartphones—a fantastic feature for peace of mind when away from home.

In terms of noise level, it’s important to note that most standby generators can produce noticeable sound when operating. Portability might be a concern as this generator weighs 466 pounds, which indicates it’s intended as a stationary unit rather than one that can be easily moved.

The engine is built for performance, ensuring less frequent maintenance needs due to its durable design. The included 5-year warranty adds a layer of confidence for users regarding the longevity of the product. Installation will require a certified electrician, which could be an added cost for some homeowners. The price point of the Generac 7043 may be higher compared to smaller, less powerful generators, making it more of an investment. Additionally, potential buyers should consider their specific power needs, as those living in smaller homes or those who do not require whole-house coverage may find it excessive.

Rating
9.8
Power Output (Wattage)
Noise Level

Most important from
423 reviews

Power Output (Wattage)
The generator kicked off and ran just fine during power outages, providing seamless electricity to the entire house.
Noise Level
The generator is quite loud, making it difficult to converse nearby, but it can handle heavy loads like running two 5-ton AC units.
#3

Generac Guardian 26kW Home Standby Generator with 200 Amp Transfer Switch, Durable All Aluminum, WiFi Enabled with G-Force Engine, Easy to Use, Whole House Power Backup, Smart Outage Solution - Bisque

Rating
9.6
Noise Level
Start Type
Maintenance Requirements

Most important from
423 reviews

Noise Level
Its operation is remarkably quiet, even when standing right next to it, making it easy to blend into outdoor environments.
Start Type
The generator starts automatically within seconds during outages and provides seamless whole-house power without interruption.
Maintenance Requirements
The generator’s durable G-Force engine reduces maintenance needs and is built to handle heavy use reliably over time.

The Generac Guardian 26kW Home Standby Generator is designed to provide reliable whole-house power backup, delivering a strong 26,000 watts of clean and stable electricity suitable for most residential needs. It runs on natural gas or propane, which are cleaner fuels compared to gasoline, and the G-Force engine is built for durability and lower maintenance. The generator features an electronic ignition for easy automatic starting during outages and includes a 200 Amp transfer switch for seamless power transfer to your home.

In terms of noise, it is described as “super quiet” with a fully enclosed aluminum casing, helping it blend into outdoor environments without being too loud. At 518 pounds and fairly large dimensions, it is not portable and intended for fixed outdoor installation. The generator is designed for standby use during power outages rather than continuous operation.

Maintenance is simplified by the G-Force engine’s heavy-use capability and lower upkeep needs. WiFi connectivity allows remote monitoring of performance and status alerts. Installation requires a professional electrician due to complexity and safety considerations. With a 5-year warranty, this generator is a reliable, quiet, and relatively low-maintenance option for homeowners seeking automatic and seamless whole-house power protection, though it is less suitable for those needing portability or extended continuous run times.

Rating
9.6
Noise Level
Start Type
Maintenance Requirements

Most important from
423 reviews

Noise Level
Its operation is remarkably quiet, even when standing right next to it, making it easy to blend into outdoor environments.
Start Type
The generator starts automatically within seconds during outages and provides seamless whole-house power without interruption.
Maintenance Requirements
The generator’s durable G-Force engine reduces maintenance needs and is built to handle heavy use reliably over time.

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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