8 Best Function Generators 2025 in the United States

The Westinghouse 5000 Peak Watt Super Quiet Portable Inverter Generator is a robust option for those who need reliable power for travel trailers, home use, or camping. It offers a high peak wattage of 5000 watts and a running wattage of 3900 watts, which is sufficient to run essential appliances. One of its standout strengths is the quiet operation, producing only 52 dBA of noise, making it suitable for residential areas or quiet campsites.

The generator is also fuel-efficient, capable of running up to 18 hours on a 3.4-gallon gas tank, and features an 'Economy Mode' to maximize fuel efficiency. The inclusion of a telescoping handle and wheel kit enhances portability, and the remote electric start with auto choke simplifies operation. It includes multiple outlet options – a 120V household outlet, an RV-ready 30 Amp outlet, and two USB outlets, catering to various power needs.

Additionally, it has a rotating digital display that shows crucial information like fuel level, power output, remaining run time, and voltage output, making it user-friendly. However, weighing 119 pounds, it may be relatively heavy for some users to move around. Another potential drawback is that it requires gasoline, limiting fuel options. This generator is EPA compliant, adding to its appeal for eco-conscious users. While it excels in providing power and is user-friendly, its weight and fuel type might be considerations for some users.

The Honda EU2200ITAN 2200-Watt 120-Volt Super Quiet Portable Inverter Generator is a highly reliable device designed for portability and ease of use. One of its main strengths is the 2200-watt power output, which is 10% higher than its predecessor, the EU2000i. This increased power allows users to run more appliances and tools simultaneously.

Additionally, it features the CO-Minder, an advanced carbon monoxide detection system that automatically shuts down the generator if CO levels become dangerously high, enhancing safety during operation. The generator is also equipped with Honda’s My Generator app and Bluetooth capability, enabling remote operation and monitoring, which is very convenient for users who prefer using their smartphones for control. Weighing just over 47 pounds, it is lightweight and highly portable, making it easy to transport and store.

The fuel type is gasoline, and it has a 0.95-gallon tank, which might require frequent refueling depending on usage. The unit is known for its quiet operation, which is a plus for those using it in noise-sensitive environments. It is worth mentioning that the price might be higher compared to other similar models, but it compensates with its reliability, safety features, and user-friendly interface. This generator is ideal for those who need a dependable and portable power source, whether for home backup during outages, camping, or outdoor events.

The Westinghouse 9500 Peak Watt Dual Fuel Home Backup Portable Generator is a robust option for those needing a reliable power backup. It offers substantial power output with 7500 rated watts and 9500 peak watts on gasoline, and 6750 rated watts and 8550 peak watts on propane. This flexibility in fuel types makes it versatile for different situations.

The 6.6-gallon fuel tank allows for extended operation, and the electric push-button start, along with a remote key fob, adds to its user-friendly design. The generator is equipped with a variety of outlets, including two GFCI 5–20R 120V household duplex outlets and one L14-30R 120/240V 30A twist-lock outlet, all covered for safety.

The control panel is intuitive, making it easier for users to operate. The 420cc Westinghouse 4-stroke OHV engine is durable and includes features like automatic low oil shutdown and a digital hour meter, enhancing its reliability and maintenance tracking. However, weighing 194 pounds, it is relatively heavy, which might make it less portable for some users despite having flat-free tires. Additionally, the noise level at 72 dB might be a concern in quieter environments.

This generator is suitable for residential use, particularly for those needing a dependable backup during power outages, and it is supported by a 3-year limited warranty, ensuring peace of mind.