10 Best Quiet Diesel Generators 2025 in the United States

The Westinghouse 28000 Peak Watt Home Backup Portable Generator is a robust option for those needing significant power output. With 28,000 peak watts and 20,000 running watts, it can handle demanding loads, making it ideal for home backup during power outages. Its 999cc V-Twin OHV engine ensures durability, and the generator includes a range of safety features such as automatic low oil and carbon monoxide (CO) shutdown. The remote electric start with auto choke and push-button ease adds to its user-friendly design, ensuring quick and hassle-free operation.

Additionally, the generator offers a variety of outlets, including 120V and 240V options, making it versatile for different power needs. The 17-gallon fuel tank provides up to 11 hours of runtime at 50% load, which is quite efficient for its size and power output. However, at 599 pounds, this generator is not very portable. The reinforced steel handles and quick-release pins help, but it’s still a heavy and bulky unit.

Its noise level is not specified, but given its size and power, it may not be the quietest option available. This generator is best suited for those in need of a high-power, durable, and reliable backup power solution, but it may not be ideal for those looking for a portable or ultra-quiet generator.

The Honda EU7000IS is a versatile 7,000-watt inverter generator designed for home backup power, RVs, and outdoor events. One of its standout features is its super quiet operation, which makes it suitable for use in residential settings without causing a noise disturbance. Its fuel efficiency and a runtime of 6 hours and 30 minutes at full load are impressive, ensuring longer periods of power supply without frequent refueling. The electric start feature adds convenience, making it easy to start up without hassle.

Additionally, the Honda My Generator app and Bluetooth capability provide modern connectivity features that allow for remote monitoring and control, which is a plus for tech-savvy users. The advanced CO-MINDER carbon monoxide detection system enhances safety by preventing harmful emissions buildup, a valuable feature for home use. However, the generator's weight of 270 pounds can be a drawback for portability despite its intended use for outdoor events. Moving it around may require more effort or additional equipment for transportation.

Another point to consider is its size, with dimensions of 28”L x 28”W x 34”H, which might require ample storage space. The 3-year residential warranty is a reassuring aspect, indicating the manufacturer's confidence in the product's durability. This generator is a robust option for those needing reliable, quiet, and fuel-efficient power, especially in residential and semi-portable scenarios, but its weight and size might limit its portability.

The WEN Quiet and Lightweight 3600-Watt Dual Fuel RV-Ready Portable Inverter Generator offers a versatile and efficient solution for residential and camping needs. Its dual-fuel capability allows it to run on both gasoline and propane, providing flexibility and convenience. This generator boasts a notable power output with 3600 surge watts and 2900 rated watts on gasoline, and slightly lower on propane. It excels in noise reduction, operating at a level comparable to a normal conversation, making it ideal for use in quiet environments as noted by the US Department of Health and Human Services.

Fuel efficiency is supported by the fuel shut-off feature, which helps limit maintenance and ensures a longer lifespan for the generator. The tank capacity is 1.5 gallons, offering a moderate runtime of approximately 5 hours, which might be a limitation for longer power needs without refueling. Portability is enhanced by its lightweight design at 49 pounds and compact dimensions, making it easy to transport and handle in various settings. Durability is backed by a three-year limited warranty and the inclusion of a CO shutdown sensor adds an extra layer of safety by automatically turning off the generator if dangerous levels of carbon monoxide are detected.

Starting the generator is straightforward with the spark ignition system. The generator might fall short for those requiring continuous high power for extended periods due to its moderate tank capacity and runtime. This generator suits users looking for a quiet, portable, and versatile power source for residential or camping use.