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 DuroMax XP16000iH is a powerful portable generator delivering up to 16,000 starting watts and 13,000 running watts, making it suitable for whole-home backup during outages or for heavy-duty outdoor use like job sites or RV camping. Its dual fuel capability lets you run it on gasoline or propane, offering flexibility depending on your fuel availability or preference. The generator also uses inverter technology, which means it provides clean, steady power safe for sensitive electronics such as computers and TVs.

Starting the generator is convenient with its remote electric start and the included battery tender helps keep the battery charged and ready. Safety is well-covered with features like an automatic low oil shutoff and a built-in carbon monoxide sensor for peace of mind. The digital control center gives clear info on runtime, load, and voltage.

This model is quite heavy at 368 pounds, making it less easy to move around despite being called portable. The runtime is about 10 hours on a full 10.5-gallon tank, which is decent but you’ll need to plan for refueling during longer power outages. The DuroMax XP16000iH represents a solid choice if you need a high-capacity, dual fuel generator capable of running an entire home or heavy equipment. It is best suited for users who prioritize power and fuel flexibility over light weight or extreme portability.