10 Best Inverter Generators 2025 in the United States

The Westinghouse 11000 Peak Watt Dual Fuel Portable Inverter Generator is a solid choice for those needing reliable power for residential use, outdoor activities, or emergency situations. With a power output of 9000 running watts (gasoline) and 8100 (propane), it’s capable of handling various devices safely due to its low THD of less than 3%. This makes it a great option for powering sensitive electronics like computers and TVs.

One of the standout features is its long runtime of up to 17 hours on a single tank of fuel, thanks to its generous 9.8-gallon capacity. Users will appreciate the remote electric start, which adds convenience, allowing you to start the generator from a distance without hassle. Furthermore, it includes multiple outlets, making it adaptable for different needs, whether using standard household items or connecting a transfer switch for more extensive power requirements.

Portability is another strong point, although the generator weighs 187.4 pounds, making it less than ideal for transport over long distances. Still, its rugged design ensures durability, and the wheels help with mobility. The built-in CO sensor enhances safety, alerting users to dangerous carbon monoxide levels. The weight can be a challenge for some users, especially if portability is a primary concern. Also, while the generator is designed for dual fuel use (gas and propane), switching fuels may require additional setup. Lastly, while its design is user-friendly, some newcomers might find the features and functions slightly overwhelming at first.

The Westinghouse 5000 Peak Watt Super Quiet Dual Fuel Portable Inverter Generator offers a strong combination of power, versatility, and convenience. With a peak power output of 5000 watts and running power of 3900 watts, it is capable of running essential appliances during power outages or while camping. It supports both gasoline and propane fuel types, providing flexibility. The 3.4-gallon gas tank provides a commendable runtime of up to 18 hours, which is quite efficient for its class.

Its noise level is impressively low, operating at around 52 dBA, making it suitable for use in quieter environments or at night. The generator's portability is enhanced by a telescoping handle, although its weight of 124.7 pounds might make it less easy to move for some users.

A notable safety feature is the CO sensor, which adds a layer of protection against harmful carbon monoxide buildup. The inclusion of RV-ready outlets and USB ports makes it versatile for both residential and outdoor uses. Additionally, the remote start function with a key fob adds convenience.

One area of concern could be its size, which at 29.6 x 21.5 x 24.3 inches, requires adequate space for storage. Furthermore, while the Total Harmonic Distortion (THD) is less than 3%, which is excellent for sensitive electronics, the generator may not suit those needing more compact solutions.

This generator is backed by a 3-year limited warranty and nationwide customer service, which is reassuring for customers considering after-sales support. This product is ideal for individuals seeking a quiet, efficient, and versatile generator for residential or RV use, but it may not be the best option for those who require a highly portable or compact solution.

The Champion Power Equipment 4000-Watt RV Ready Portable Inverter Generator is a strong contender in the inverter-generator market, especially for those who need reliable power on the go. Weighing less than 49 pounds, it's incredibly lightweight for a generator with a 4000-watt starting power and 3000-watt running power, making it a portable option suitable for camping, tailgating, and residential backup. The generator runs on gasoline and features a CO Shield carbon monoxide auto shutoff system for added safety, a valuable feature for enclosed spaces or prolonged use.

Its noise level of 64 dBA from 23 feet ensures relatively quiet operation, ideal for outdoor gatherings and campsites. When it comes to runtime, it can last up to 10 hours on a full tank, which is quite respectable. The generator also boasts a low Total Harmonic Distortion (THD) of less than 3%, providing clean electricity, which is essential for sensitive electronics. Additionally, the option to connect another 4000-watt Champion inverter via a parallel kit can double the output power, offering flexibility for higher power demands.

The package includes useful components like engine oil and an oil funnel, and it is designed with a Cold Start Technology for reliable starting in cold weather. A 3-year limited warranty and free lifetime technical support are significant advantages for long-term users. However, some potential drawbacks include the limited fuel capacity, as it only runs on gasoline, which may require frequent refueling for extended use. Additionally, while the noise level is low, it may still be noticeable in very quiet environments. This inverter generator is particularly beneficial for campers, RV travelers, and homeowners needing a dependable backup power source.