10 Best Generac Generators 2025 in the United States

The Generac 8917 GP18000EFI is a robust gas-powered generator suitable for residential use, especially for whole-home backup. With a powerful 18,000-watt output and 22,500-watt starting wattage, it can handle heavy loads and multiple appliances simultaneously. The electric start feature is convenient and user-friendly, eliminating the need for manual pulling.

One of its standout features is the COsense technology, which provides crucial protection against carbon monoxide, enhancing safety during use. Additionally, the generator includes TruePower Technology, which ensures a stable power supply for sensitive electronics, making it versatile for various applications. The large capacity fuel tank offers up to 9 hours of runtime, reducing the frequency of refueling during extended power outages.

The Generac 816cc EFI engine is designed for efficiency and performance, but being a fuel-powered engine, it requires regular maintenance like oil checks and changes to keep it in top condition. Portability is a significant plus, thanks to the heavy-duty, never-flat wheels and durable steel tube cradle, although the generator's substantial weight of 443 pounds might still make it a bit challenging to move around. Some drawbacks include its noise level common to gas generators, which can be quite loud, and the initial cost, which might be on the higher side. A point of note is its compatibility with a Homelink Manual Transfer Switch, making it an effective alternative to a permanent home standby generator. Ideal for homeowners needing reliable power backup, the Generac 8917 GP18000EFI offers a blend of power, safety, and portability, albeit with the usual maintenance requirements and noise levels associated with gas generators.

The Generac 7705 GP15500EFI portable generator is a robust option for those seeking reliable power for emergency backup or job sites. With a formidable 15,500 running wattage and 19,300 starting wattage, it is capable of handling substantial power needs. The 816cc Electronic Fuel Injection Engine ensures efficient performance, and the COsense technology adds a critical safety layer by detecting hazardous carbon monoxide levels.

Its 11-hour runtime is supported by a 5-gallon steel fuel tank, making it suitable for extended use without frequent refueling. The electric start feature simplifies operation, and the hour meter helps in tracking maintenance intervals, enhancing the generator's longevity. The low-oil level shutdown feature further protects the engine from damage.

Portability, although aided by heavy-duty wheels, might be challenging due to its substantial weight of 450 pounds. This model is 49-state compliant, ensuring broad usage applicability. Those needing a reliable and powerful generator for commercial or residential use will find this model a strong contender, though its significant weight should be considered.

The Generac 7290 26kW Air Cooled Guardian Series Home Standby Generator offers robust and reliable power for home use, making it an excellent choice for residential backup power. The standout feature is its substantial 26kW power output, which ensures it can handle significant electrical loads. It operates on natural gas or LP gas, giving you flexibility depending on fuel availability.

Additionally, the generator includes a Quiet-Test self-test mode that runs at a lower RPM to reduce noise and save fuel, which is a significant plus for maintaining peace and quiet around your home. The electric start system enhances ease of use, and the mobile Link Wi-Fi connectivity allows you to monitor the generator remotely, adding convenience and peace of mind. The 5-year limited warranty underscores its long-term reliability, and the unit is designed for easy installation by a certified and licensed electrician.

On the downside, its hefty weight of 518 pounds makes it less portable, so it's best suited for stationary home use rather than for those needing a mobile generator. Also, while it’s engineered to be quiet during tests, its noise level during regular operation may still be a consideration for some users. The maintenance and service alerts provided via Wi-Fi are helpful, but the initial setup may require professional assistance. Despite these minor drawbacks, its high output, reliable performance, and convenient features make it a solid investment for comprehensive home backup power.