10 Best 12000 Watt Generator 2025 in the United States

The Westinghouse 13500 Peak Watt Tri-Fuel Portable Generator is a robust and versatile option ideal for home backup power. It offers significant power output with 13500 peak watts and 10500 running watts on gasoline, ensuring it can handle most household needs during an outage. Its ability to run on gasoline, propane, and natural gas adds flexibility and convenience depending on fuel availability.

The generator boasts a respectable run time of up to 19 hours on a 9.5-gallon fuel tank, which is quite impressive for long-term use without frequent refueling. Additionally, the remote electric start with a key fob, along with electric and recoil start options, enhances user convenience, especially during emergencies. It comes equipped with five outlets, including household, transfer switch ready, and RV ready options, all with rubber covers for safety.

The heavy-duty 500cc engine with a cast iron sleeve ensures durability, and features like automatic low oil and CO shutdown add an extra layer of protection. However, weighing in at 230 pounds, it is quite heavy and may not be the easiest to move around, despite its 'portable' label. The generator comes ready to use with minimal assembly and includes useful accessories like a battery charger, oil, and a tool kit. Backed by a 3-year limited warranty, it’s a reliable choice for those needing a powerful and versatile generator, though its weight might be a drawback for some users.

The Generac GP9500E Tri-Fuel Generator is a strong choice if you need up to 12,500 starting watts and about 9,500 running watts, which fits well for home backup, job sites, or RV use. One of its biggest strengths is the ability to run on three types of fuel—gasoline, propane, or natural gas—giving you flexibility when fuel availability varies. The electric start makes it easy to get going without manual effort, which is convenient during power outages. The generator also offers a good runtime of up to 9.5 hours at half load on a full 7.5-gallon gas tank, meaning it can keep your power going for a longer time without frequent refueling.

Portability is decent with heavy-duty never-flat wheels and a sturdy steel frame, but keep in mind it weighs 219 pounds, so moving it might require some effort. It includes three covered outlets, protecting them from dust and moisture, which is practical for outdoor use. The COsense technology adds an important safety feature by detecting carbon monoxide and shutting off the generator to keep you safe indoors or in enclosed spaces.

Noise levels are described as quiet operation for its size, but as with most generators providing this power, it will still produce noticeable sound. If you want a reliable, flexible fuel option generator with electric start and solid runtime, this model fits the bill well. It may feel heavy if you need to move it often, and while quieter than some, it’s not silent. For those needing a powerful backup or worksite generator with multi-fuel convenience, the Generac GP9500E is a practical and dependable choice.

The Westinghouse 14500 Peak Watt Tri-Fuel Home Backup Portable Generator is a robust and versatile power source, ideal for larger homes or as a portable power solution. One of its standout features is the tri-fuel capability, allowing it to run on gasoline, propane, or natural gas, providing flexibility depending on fuel availability. With peak wattages of 14,500 (gasoline), 13,500 (propane), and 12,000 (natural gas), it offers substantial power to keep essential appliances running during outages.

It can operate up to 19 hours on a full gasoline tank or up to 7 hours on a 20 lb propane tank, ensuring long-duration power support. The generator's remote electric start adds convenience, and it’s transfer switch ready, simplifying connection to your home's electrical system. The heavy-duty 550cc 4-Stroke OHV engine is designed for durability, featuring a cast iron sleeve. It also includes safety features like overload protection, automatic voltage regulation, and a CO sensor.

At 230 pounds, it is quite heavy, which may affect portability despite its portable tag. Additionally, it operates at a noise level typical for generators of this size, which might be a consideration for noise-sensitive environments. The unit’s electronics and multiple outlets ensure versatility in connectivity. The 3-year limited warranty and positive customer reviews further enhance its reliability and customer satisfaction. This generator is a solid choice for homeowners seeking reliable backup power with flexible fuel options.