10 Best Trifuel Generators 2025 in the United States

The WEN 13,000-Watt Tri-Fuel Inverter Generator is a powerful and versatile option for anyone needing a reliable backup power source. Its ability to switch easily between gasoline, propane, and natural gas offers great flexibility depending on fuel availability or preference. It delivers strong power output, with up to 13,000 watts of surge power and 10,500 running watts on gasoline, which is ample for heavy-duty use, including running multiple household appliances or tools simultaneously.

This generator features a 7.1-gallon gas tank that can provide up to 7.7 hours of runtime at half load, which is decent for extended power needs. The electric start makes it easy to get going without the hassle of pull cords. Portability is helped by an included wheel kit despite the unit being quite heavy at around 247 pounds, so while it’s movable, it's not something you’d carry around casually. A notable safety feature is the WEN Watchdog carbon monoxide sensor that automatically shuts down the generator if CO levels become dangerous, adding peace of mind during indoor or close-quarters use. It’s also relatively quiet for a unit this size, making it suitable for residential use.

The variety of outlets, including standard 120V, 240V, transfer-switch, and USB outlets, makes it adaptable for different applications like emergency home backup, camping, or even charging electric vehicles. The weight and size make it less ideal for those seeking a lightweight or ultra-portable generator. Additionally, while it’s quieter than many similarly powerful generators, it is not silent and may still produce noticeable noise. Some users might also find the fuel consumption on gasoline comparatively high when running near maximum power. This generator is a strong choice for those who want a high-power, flexible fuel option with easy start-up and good safety features, especially for home backup or worksite use where weight is less of a concern.

The DuroMax XP15000HXT Tri Fuel Generator is a powerhouse that can generate up to 15,000 watts, making it well-suited for keeping your entire home operational during power outages. One of its standout features is its versatility in fuel choice, allowing you to run it on gasoline, propane, or natural gas, which provides significant flexibility depending on availability and cost of fuel sources. The generator’s powerful 500cc OHV engine is designed to deliver reliable performance. It also features a push-button and remote start, which simplifies the operation process, and a user-friendly front-facing interface for quick fuel type changes.

A variety of outlets, including a transfer switch-ready 50 amp outlet, ensures compatibility with a range of devices and applications. The fully-loaded power panel and advanced computer interface with a large LED display make monitoring and managing the generator straightforward, providing real-time information on gas usage, load, voltage, frequency, and run time. Additionally, the CO Alert feature is a crucial safety measure that automatically shuts down the generator to prevent carbon monoxide poisoning.

The 100% copper windings enhance durability and longevity, making it a reliable choice for both residential and commercial use. However, the generator is quite heavy at 362 pounds, which may impact its portability despite the included wheel and handle kit. Additionally, while it offers robust power and comprehensive features, the noise level could be a consideration for users in noise-sensitive environments. This product is ideal for those who need a high-capacity, versatile power backup solution with a strong emphasis on safety and ease of use.

The Westinghouse 13500 Peak Watt Tri-Fuel Home Backup Portable Generator is a versatile and powerful option for those needing reliable backup power. Its ability to run on gasoline, propane, and natural gas makes it highly adaptable in various situations. With peak wattage output of 13500 (gasoline), 12500 (propane), and 10000 (natural gas), it can handle substantial power demands, making it suitable for home backup during outages or for use on job sites.

The generous 9.5-gallon fuel tank provides up to 19 hours of runtime on gasoline, which is impressive for continuous power needs. A standout feature is the remote start with a key fob, adding convenience, and its multiple outlets, including a transfer switch ready port, make it user-friendly for different applications. Safety features like GFCI outlets, rubber covers, and automatic low oil and CO shutdown enhance its reliability.

However, at 230 pounds, it's quite heavy, so portability might be challenging despite its wheels. The electric start, combined with the included battery, makes it easy to start, and its EPA compliance and three-year warranty provide peace of mind. This generator is ideal for those needing a robust backup power solution that can switch between different fuel types depending on availability and preference.