10 Best Portable Whole House Generator 2025 in the United States

The Generac Guardian 24kW Home Standby Generator is designed to provide reliable, whole-house backup power during outages. It delivers a strong 24,000 watts of clean and stable electricity, enough to keep most homes fully powered. It runs on natural gas or liquid propane, which are convenient fuel options that can keep your home running for extended periods without refueling.

The built-in Wi-Fi connectivity allows you to monitor the generator remotely, so you can check its status and receive maintenance alerts from anywhere, adding extra peace of mind, especially if you travel frequently. The generator features an electronic ignition system, making it easy to start automatically when power goes out. Safety is addressed with the included 200 Amp transfer switch, which helps protect your home’s electrical system by safely switching power sources.

This unit is quite heavy at 455 pounds, so it’s meant to be permanently installed outside by a licensed electrician. Generac’s G-Force engines are known for running quieter than older models. The generator comes with a five-year limited warranty, reflecting its durable, high-quality American engineering. This model is ideal for homeowners looking for a dependable, automatic backup power solution that covers their entire house rather than a portable option for camping or job sites.

The Generac 7705 GP15500EFI is a robust portable generator that shines in its power output and safety features, making it a solid choice for both emergency backup and job site applications. With a powerful 15,500-watt output and an impressive starting wattage of 19,300 watts, it can easily handle most household appliances, tools, and other power needs during outages or projects. Its electronic fuel injection engine enhances performance efficiency, ensuring you get the most out of your fuel.

A standout feature is the integrated COsense technology, which actively monitors carbon monoxide levels, providing an added layer of safety during operation. This is especially crucial in residential settings where carbon monoxide can pose a serious risk. The generator also offers a commendable runtime of up to 11 hours, depending on the load, thanks to its 5-gallon fuel tank.

Portability is another strength, as the unit is designed with durable, never-flat wheels that make transportation easier. However, its weight of 450 pounds can present challenges for some users when moving it around, especially in uneven terrains. The noise level, while not specified, tends to be higher in powerful generators like this one, which might be a consideration in quieter neighborhoods. Additionally, the generator's bulkiness may limit its use in smaller spaces.

The Westinghouse 28000 Peak Watt Home Backup Portable Generator is a robust option for anyone in need of a reliable power source during outages, especially for residential use. With a peak output of 28,000 watts and a running capacity of 20,000 watts, it can effectively power multiple appliances and systems in your home. The generator features a powerful 999cc engine, and it can run for up to 11 hours at half load, thanks to its 17-gallon fuel tank, which is a considerable advantage for extended use.

One of its standout features is the remote electric start with a key fob, making it convenient to operate from a distance. It also boasts a comprehensive range of outlets, including multiple household and RV outlets, which provide flexibility for different electrical needs. Safety is prioritized with built-in features like a CO sensor, low oil shutdown, and idle control, ensuring peace of mind during operation.

There are some considerations to keep in mind. At 599 pounds, portability may be a challenge for some users, particularly those who need to move it frequently. Its noise level could also be on the higher side compared to smaller generators, which might be a concern for noise-sensitive environments. Additionally, while the setup is user-friendly, it requires adequate space for operation and maintenance.

This generator is well-suited for homeowners looking for a powerful backup option with excellent safety features and user convenience. If you prioritize heavy-duty performance and can accommodate its weight and potential noise, it could be a great addition to your home preparedness plan.