10 Best Auto Start Generator 2025 in the United States

The Westinghouse 12500 Watt Dual Fuel Portable Generator offers a robust power output, delivering 9500 running watts on gasoline and 8500 on propane, with peak outputs up to 12500 watts, making it well-suited for home backup during power outages. Its dual fuel capability allows you to switch between gas and propane, providing added flexibility depending on fuel availability. Run time is solid, with up to 12 hours on a full 6.6-gallon tank when using gasoline, which is convenient for extended outages.

The generator features a remote electric start with a key fob, making it easy to power on without manual effort, and it is transfer switch ready, allowing safe connection to your home’s electrical system. The engine is a heavy-duty 457cc 4-stroke with features like automatic low oil shutdown and a digital hour meter, which help protect the unit and inform maintenance needs. Several outlets, including GFCI-protected household receptacles and RV-ready plugs, offer versatile connection options.

Weighing 210 pounds, it is portable but may require two people or a dolly to move comfortably. Maintenance is straightforward with included tools and oil, and a 3-year warranty adds peace of mind. This generator is a strong choice for homeowners needing reliable and flexible backup power, especially when convenience features like remote start and transfer switch compatibility are priorities; however, consider its heavier weight when planning its placement.

The Westinghouse 13500 Peak Watt Dual Fuel Generator delivers strong power, offering 13,500 peak watts and 10,500 running watts on gasoline, with slightly lower output on propane. This makes it a solid choice if you need to run several household appliances or essential systems during an outage. It runs on both gasoline and propane, giving you fuel flexibility which is handy if one type becomes scarce. The large 9.5-gallon fuel tank provides up to 19 hours of continuous use on gasoline, meaning it can operate through most nights without refueling.

It features a remote electric start with a key fob, making it easier to power up the generator without manual effort—an important convenience for automatic backup needs. The built-in transfer switch ready outlet simplifies connecting to your home’s electrical system safely. Its heavy-duty 500cc engine includes safety features like automatic low oil shutdown and a carbon monoxide sensor, improving reliability and peace of mind. Weighing 230 pounds, this generator is quite heavy and may be difficult to move around frequently, limiting portability. Generators with this size engine tend to be moderately loud, so expect some noise during use.

Maintenance is user-friendly with included tools and clear instructions, and the 3-year warranty shows the brand's confidence in durability. This model is well suited for homeowners wanting a powerful, flexible, and relatively easy-to-operate backup generator, especially if remote start and dual fuel options are priorities. However, if you need something lighter or quieter for frequent transport, you might want to consider other models.

The Generac Guardian 10kW Home Standby Generator is a robust solution for whole-house power backup, offering a high power output of 10,000 watts. It runs on natural gas or LP gas, providing flexibility in fuel options. One of its standout features is the Automatic Transfer Switch (ATS) with 100 Amp capacity, which ensures a seamless transition during power outages. The generator is designed for residential use, making it suitable for homeowners who need reliable backup power.

With its durable aluminum enclosure, it is built to withstand outdoor conditions, ensuring longevity and durability. Additionally, the generator features Wi-Fi connectivity for remote monitoring, allowing users to track performance and receive maintenance alerts from anywhere. This is particularly useful for those who travel frequently or want peace of mind when away from home.

The Generac's G-Force Engine is engineered for reliability and low maintenance, contributing to efficient operation and reduced noise levels, which is a significant advantage for residential settings. However, it's worth noting that the generator weighs 338 pounds, making it less portable and more challenging to move without assistance. Installation by a certified electrician is recommended, which could add to the initial setup cost. Despite these considerations, the 5-year limited warranty offers long-term assurance of the product's performance.

In summary, the Generac Guardian 10kW is a powerful, durable, and easy-to-use standby generator that excels in providing whole-house power backup, though its portability is limited and professional installation is advised.