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 Honda EU2200ITAN 2200-Watt Inverter Generator is a great choice for those needing reliable power in a portable and quiet unit. One of its standout features is its low noise level, making it suitable for camping, tailgating, or residential uses where noise might be a concern. With a power output of 2200 watts, it delivers more power compared to its predecessor, enabling you to run multiple appliances simultaneously, which is a significant advantage. The generator's fuel efficiency is commendable, offering up to 8 hours of runtime on a single gallon of gasoline. This means fewer trips to refill, which is particularly convenient for longer outdoor events. Additionally, its lightweight design (44 pounds) enhances its portability, making it easier to transport wherever you need it.

The durability of Honda products is well-regarded, and this generator seems no exception, built to withstand regular use in various conditions. The CO-Minder feature is a modern safety addition that monitors carbon monoxide levels, ensuring you can use the generator safely indoors when properly ventilated. However, it does have a few drawbacks. The tank capacity of just 1 gallon may limit prolonged use without refueling, especially if you're consuming the maximum wattage. Additionally, while it’s a gas-powered generator, it’s not a true diesel generator, which may be a consideration for users specifically seeking a diesel option for better fuel efficiency over time.

The ignition system is a magneto type, which is reliable but might not be as easy to start in cold weather compared to electric start mechanisms. The Honda EU2200ITAN provides an excellent blend of power, portability, and quiet operation, making it a solid choice for casual users or those needing backup power without the noise.