10 Best Portable Whole House Generator 2025 in the United States

The Westinghouse 14500 Peak Watt Tri-Fuel Generator is a versatile and powerful solution for backup power needs in larger homes. Its ability to run on gasoline, propane, or natural gas provides flexibility, with the highest output at 14,500 peak watts on gasoline. This generator is built for durability with a 550cc 4-stroke OHV engine and a cast iron sleeve, ensuring long-term reliability.

The generator boasts a substantial run time of up to 19 hours on a 9.5-gallon fuel tank, making it suitable for extended power outages. The electric start feature with a remote option adds convenience, and the generator is transfer switch ready for seamless integration into home power systems. Safety is well-addressed with features like overload protection, automatic voltage regulation, and a CO sensor.

It is quite heavy at 230 pounds, which may affect its portability despite being labeled as portable. The noise level might also be a concern in residential areas, although it includes a muffler to reduce sound. This generator is backed by a 3-year limited warranty and supported by nationwide customer service, providing peace of mind to the users.

The Westinghouse 12500 Watt Dual Fuel Home Backup Portable Generator is a solid choice for those needing a reliable power source for their entire home. It offers impressive power output with 9500 running watts and 12500 peak watts on gasoline, and 8500 running watts and 11200 peak watts on propane, making it versatile for different fuel preferences. The dual-fuel capability is a significant advantage, providing flexibility during fuel shortages.

The generator includes a remote start with a key fob, which adds convenience, along with electric and recoil start options. Its 6.6-gallon fuel tank allows for up to 12 hours of run time, which is quite adequate for most residential needs. This model is designed with safety in mind, featuring GFCI outlets with rubber covers, automatic low oil shutdown, and a durable cast iron sleeve engine. The inclusion of a transfer switch-ready outlet simplifies connection to your home’s power system.

However, at 210 pounds, it is quite heavy, which could affect portability despite having wheels. The generator comes with useful accessories and a three-year limited warranty, indicating strong support from the manufacturer. This makes it suitable for homeowners looking for a comprehensive backup solution, though its weight might require consideration.

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.