8 Best Natural Gas Backup Generators 2025 in the United States

The Generac Guardian 14kW Home Standby Generator with a 200 Amp Transfer Switch is a robust solution for whole-house power backup. This generator provides a high-quality power output of 14,000 watts, delivering clean and stable energy with less than 5% harmonic distortion, making it reliable for sensitive electronics. The G-Force engine is designed for durability and reduced maintenance, ensuring long-term reliable performance.

The aluminum enclosure enhances its durability for outdoor use, while the Wi-Fi connectivity feature allows remote monitoring, adding convenience for users to track performance and maintenance needs remotely. Additionally, it comes with a 5-year limited warranty, offering peace of mind regarding its longevity and performance. The automatic transfer switch ensures a seamless transition during power outages, maintaining continuous power supply without manual intervention.

The generator weighs 385 pounds, making it less portable and more suitable for permanent installation, typically requiring professional installation by a licensed electrician. It operates quietly with features like automatic idle control and a fully enclosed design. As it runs on natural gas or LP gas, fuel consumption and run time can vary based on usage, but its efficient engine design suggests lower fuel use. This generator is ideal for homeowners seeking a reliable, low-maintenance solution for comprehensive home backup power.

The Generac Guardian 10kW Home Standby Generator is a robust solution for those seeking reliable whole-house power backup. Its 10,000-watt power output is sufficient for most residential needs, providing clean and stable power with less than 5% harmonic distortion. This ensures that sensitive electronics and appliances are safely powered during an outage. The included 100 Amp automatic transfer switch (ATS) allows for seamless switching when power is lost, enhancing convenience and security during blackouts.

The generator’s G-Force Engine is designed for durability and reduced maintenance, making it a low-maintenance option over time. Additionally, its aluminum enclosure provides protection against the elements, further ensuring long-term reliability. One standout feature is its Wi-Fi connectivity, which allows you to monitor its performance remotely via the Generac Mobile Link app. This can be particularly useful for staying informed about maintenance needs and generator status when you’re away from home.

Despite its many strengths, there are some considerations to keep in mind. At 338 pounds, this generator is quite heavy, making portability difficult. It’s designed for stationary installation rather than frequent movement. Also, while it is marketed as 'super quiet,' noise levels can still be noticeable, especially at night. Another point to consider is the initial cost and the need for professional installation, which can add to the total expense. The 5-year limited warranty provides additional peace of mind, covering various potential issues. This generator is ideal for homeowners who want a dependable, high-quality backup power solution and are willing to invest in professional setup and occasional maintenance.

The DuroMax XP13000HXT 13,000-Watt Tri Fuel Generator offers impressive power output at 13,000 watts, making it suitable for both residential and commercial use. This high wattage ensures it can handle the energy demands of an entire home during a power outage. The tri-fuel capability allows the generator to run on gasoline, propane, or natural gas, offering flexibility and convenience based on fuel availability and preference. Equipped with a powerful 500cc engine, it promises reliable performance. The generator's electric start and remote start features add ease of use, eliminating the need for manual pull-starting.

Additionally, the front-facing interface allows for quick fuel type changes, enhancing user convenience. The CO Alert feature is a significant safety addition, protecting users from harmful fumes. With a noise level of 74 dB, it may be louder than some quieter models, which is a consideration for those in noise-sensitive environments. At 240 pounds, it is relatively heavy, yet the included wheel and handle kit aids mobility. The unit is sizable, so it requires sufficient storage space. Maintenance is manageable with the provided tools, although regular checks are necessary to maintain optimal performance.

One notable absence is the automatic transfer switch (ATS), which would have allowed for seamless switching during power outages. The generator runs for approximately 8 hours, which is decent but may require refueling for longer outages. Overall, the DuroMax XP13000HXT is a robust, versatile generator that excels in power output and fuel flexibility but may be less ideal for those needing a quieter, more compact solution with automatic transfer switching.