10 Best Quietest Generators 2025 in the United States

The Generac 18,000-Watt Gas-Powered Portable Generator is a robust option for those needing substantial power output. With an impressive 18,000 watts from its 816cc EFI engine, it is well-suited for emergencies, recreational use, and home backup power.

One of its standout features is the COsense Technology, which offers essential safety by protecting against carbon monoxide. Additionally, TruePower Technology ensures that sensitive electronics and tools can be safely powered, thanks to its low total harmonic distortion (THD) of less than 5%.

This generator also includes a low-oil pressure shutdown feature, which helps prevent engine damage and enhances its longevity. Its large fuel capacity allows for extended runtimes, making it durable for long-term use. However, at 442.8 pounds, it is quite heavy, which could impact its portability despite being labeled as portable. This weight makes it less ideal for frequent transport. The generator runs on gasoline, which is readily available but may not be as convenient as other fuel types like propane.

The ERAYAK 4500W Portable Inverter Generator is a strong contender for anyone looking for a super quiet generator. At a noise level of 60.5 dB, it operates quietly, making it ideal for residential areas or camping. It delivers 4500 starting watts and 3500 running watts, which is sufficient for home appliances, RVs, and emergency power backup. The pure sine wave inverter technology ensures that even sensitive electronics like laptops and smartphones are safe to use with this generator.

With a compact size and weight of 54 pounds, it's portable and easy to handle, great for on-the-go power needs. The generator runs on gasoline and features a 2.25-gallon tank that can provide up to 16 hours of runtime at 25% load due to the fuel-saving Electronic Speed Control Mode (ESC). A special CO detection system ensures safety by shutting down the unit if unsafe carbon monoxide levels are detected. Additionally, the option to parallel two units for increased power output is a handy feature.

However, there are some downsides. The generator may seem expensive for some, and while it is portable, 54 pounds can still be a hefty lift for some users. Also, being gasoline-powered, it requires regular maintenance and proper handling of fuel. The ERAYAK 4500W offers a blend of quiet operation, sufficient power output, and portability, making it a solid choice for those requiring a reliable and quiet generator for diverse needs.

The Westinghouse Outdoor Power Equipment 14500 Peak Watt Tri-Fuel Home Backup Portable Generator is a versatile and powerful generator, making it suitable for large homes or as a reliable portable power source. It boasts an impressive power output with 14,500 peak watts and 11,500 running watts on gasoline, 13,500 peak watts and 10,500 running watts on propane, and 12,000 peak watts and 9,500 running watts on natural gas.

This flexibility in fuel type – gasoline, propane, and natural gas – allows for extended runtime and convenience, running for up to 19 hours on a 9.5-gallon fuel tank and up to 7 hours on a 20 lb. propane tank. The heavy-duty 550cc 4-Stroke OHV Westinghouse engine ensures durability and longevity, supported by a 3-year limited service, labor, and parts coverage warranty.

For ease of use, it includes an electric start, overload protection, automatic voltage regulation, and a muffler for noise reduction. However, at 230 pounds, it is quite heavy and may not be the easiest to transport. While it is EPA compliant and has a CO sensor for safety, this generator is highly suitable for homeowners needing a reliable backup power source, though its weight could be a potential drawback for some users.