10 Best Propane Generators 2025 in the United States

The Westinghouse 28000 Peak Watt Tri-Fuel Generator is a powerhouse designed mainly for larger homes needing reliable backup power. It offers impressive wattage, delivering up to 28,000 peak watts on gasoline and 25,200 peak watts when running on propane, which is excellent for running multiple heavy appliances or essential home systems during an outage. With a large 17.2-gallon fuel tank, it can run up to 13 hours at 25% load, giving you substantial runtime for extended outages. It supports three fuel types—gasoline, propane, and natural gas—making it versatile and convenient depending on what fuel you have access to.

The generator includes electric and remote start, simplifying the startup process, which is a big help if you want to avoid manual pulls. Portability-wise, it weighs 557 pounds but features large never-flat wheels and foldable handles to assist with moving it around, although it won’t be as easy to transport as smaller units. Generators of this size tend to produce noticeable noise and are best suited for outdoor use rather than quiet environments. The built-in sensors, automatic idle control, and voltage regulation help protect your devices and improve fuel efficiency, while the low total harmonic distortion means it can safely power sensitive electronics like computers and TVs.

A potential downside is its size and weight, which may be cumbersome for some users, and it requires professional installation for the hardwired whole-home backup option. For those seeking a robust, reliable, and flexible generator for backup power in a larger home and who do not mind the bulk, this model represents a strong contender.

The Generac Guardian 10kW Home Standby Generator is designed to provide reliable backup power for your entire home, making it a strong choice for those preparing for storms or outages. It delivers a solid 10,000 watts of clean, stable power which is enough to keep essential appliances running smoothly. It operates quietly, especially during its self-test mode, which helps save fuel and reduces noise disturbance—a big plus if you want peace and quiet around your home.

This model runs on either natural gas or liquid propane, offering flexible fuel options that can fit various household setups. The generator features an electronic ignition system for easy and reliable starting, so you won’t have to worry about manual effort when power goes out. With its Wi-Fi connectivity, you can monitor its status remotely, giving you peace of mind even when you’re away.

Since it is designed to be a permanent home standby unit and weighs 338 pounds, it is not portable. However, it excels in durability and low maintenance thanks to its purpose-built engine. Installation requires a certified electrician, so it’s not a simple plug-and-play device but rather a solid investment for long-term home protection. This generator offers powerful, quiet, and efficient backup energy with smart features, ideal for keeping your home running smoothly during emergencies.

The Westinghouse 11000 Peak Watt Dual Fuel Portable Inverter Generator is a powerful option for those in need of a reliable energy source. With a peak wattage of 11,000 watts on gasoline and 10,000 watts on propane, it delivers robust power suitable for a variety of uses, including residential and emergency backup. Its run time of up to 17 hours on a 9.8-gallon tank is impressive, ensuring long-term usage without frequent refueling. The generator features a remote electric start, which is convenient and user-friendly, along with push button and recoil start options.

It houses a heavy-duty 452cc engine with automatic low oil shutdown and a CO sensor for safety. The inclusion of GFCI outlets and transfer switch ready outlets make it versatile for different electrical needs. While it weighs 187.4 pounds, which may limit portability despite being marketed as portable, it remains a strong choice for those seeking reliability and versatility. Fuel efficiency is good, especially with the ability to run on both gasoline and propane, providing flexibility depending on fuel availability.

The rotating digital display and various included components like the oil funnel and propane regulator make it user-friendly from the start. While its weight might be a drawback for some, the generator’s comprehensive features and robust power output make it a solid choice for those seeking reliability and versatility.