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 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.

The Westinghouse 11000 Peak Watt Dual Fuel Portable Inverter Generator is a powerful and versatile generator suitable for a variety of needs. It produces 9000 running watts and 11000 peak watts on gasoline, and 8100 running watts and 10000 peak watts on propane. This makes it a strong contender for those needing substantial power output. Its dual fuel capability provides flexibility and convenience, allowing users to switch between gasoline and propane based on availability and preference.

The generator features inverter technology, making it safe for sensitive electronics by producing clean power with less than 3% Total Harmonic Distortion (THD). This is a significant advantage for households and businesses that need to power delicate devices. Portability is somewhat compromised by its weight of 187.4 pounds, although it’s designed with wheels and a handle to aid in moving it. The 17-hour runtime on a 9.8-gallon fuel tank is impressive, providing extended use without frequent refueling.

Additional features include a remote electric start, LED data center, GFCI outlets, and a CO sensor for safety. The generator is also transfer switch ready and can be used in parallel with another unit for increased power output. Its built-in safety features and ease of use make it a reliable choice for residential use. This generator balances power, safety, and versatility, making it well-suited for users needing a robust and flexible power source, though it may not be the quietest or most portable option available.