10 Best Natural Gas Generators 2025 in the United States

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.

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.

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.