10 Best Diesel Generators 2026 in the United States

The DuroMax XP16000iHT is a powerful tri-fuel portable inverter generator delivering up to 16,000 watts of clean, stable power, suitable for whole-home backup, RVs, or job sites. It stands out with its ability to run on gasoline, propane, or natural gas, offering great fuel flexibility depending on your availability and preference. With dual 50-amp outlets, it easily supports full home power through a transfer switch, which is ideal for emergency backup situations. The remote electric start is a convenient feature, allowing you to start or stop the generator without going outside, especially useful during bad weather.

In terms of noise, this model uses inverter technology to keep sound levels relatively low, making it quieter than traditional generators and suitable for residential use and outdoor events. The included CO Alert safety feature adds peace of mind by automatically shutting off the unit if harmful carbon monoxide is detected. While it weighs 505 pounds, which makes portability a bit challenging, it is still considered portable for a generator of this size due to its design and wheels.

The 10.5-gallon fuel tank supports extended runtime, but exact fuel consumption rates depend on the fuel type used and load, which users should monitor via the smart digital control center. Its heavy-duty 744cc DuroMax engine is designed for durability and consistent performance. Maintenance is simplified with included tools and easy fuel switching, but the large size and weight mean periodic professional servicing may be needed. This generator suits those needing a reliable, high-power backup source with fuel flexibility and modern convenience features like remote start and digital monitoring. For those prioritizing maximum portability or extremely quiet operation, other lighter or quieter models may be preferable. The 5-year warranty also provides confidence for long-term use.

The Generac Guardian 22kW Home Standby Generator is a powerful option for homeowners seeking reliable backup power during outages. It delivers a strong 22,000 watts of clean and stable electricity, enough to cover an entire house comfortably. Its engine is designed to be fuel-efficient and quieter than many comparable generators, which helps reduce noise disturbance during use. The unit runs on natural gas or propane, which are convenient and readily available fuel sources for many users.

One standout feature is the included 200 Amp automatic transfer switch, which seamlessly switches your home’s power to the generator when the main power goes out—meaning you won’t have to lift a finger during an outage. The transfer switch is also built to last with a five-year warranty and is housed in a weatherproof aluminum enclosure for outdoor installation. The generator comes Wi-Fi enabled, allowing you to monitor its status and maintenance alerts remotely via an app, providing extra convenience and peace of mind.

In terms of size and weight, it’s a heavier and less portable unit (466 pounds), so it’s best suited for permanent home installation rather than moving around. Maintenance needs are relatively low thanks to the durable G-Force engine, but professional installation and occasional servicing by a licensed electrician are recommended to keep it running smoothly. Though this generator is on the pricier side and installation can be involved, its combination of power, reliability, and smart features makes it an excellent choice for homeowners wanting a dependable whole-house backup power solution.

The DuroMax XP15000HX is a powerful portable generator offering 15,000 watts of starting power and 12,000 watts running power, suitable for whole-home backup during power outages or for commercial use. One of its biggest advantages is dual fuel capability, allowing you to run it on gasoline or propane. Propane is cleaner, more fuel-efficient, and easier to store long-term, which can save money and reduce maintenance. It features a robust 670cc engine and durable all-copper windings designed to extend its lifespan. The generator is transfer switch ready, meaning it can easily connect to your home’s electrical system for seamless power backup.

Its control panel is user-friendly, with a digital display showing voltage, frequency, and maintenance reminders, plus a convenient push-button start and remote control. Safety is enhanced by a CO Alert system that shuts the generator off if dangerous carbon monoxide levels are detected. Despite weighing 345 pounds, it includes wheels and a handle to help with moving it around, though it is still better suited for those who need a relatively heavy-duty, stationary backup rather than light portability. Maintenance is supported with included tools and clear indicators for service intervals.

This generator is an excellent option for anyone needing reliable, flexible power backup or a generator capable of handling high loads, especially if you want the option of cleaner propane fuel. However, its weight and size may make it less convenient for frequent transport or casual recreational use.