Best diesel generators

Our top 3 picks

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  Generac Guardian 22kW Home Standby Generator with 200 Amp Transfer Switch, Durable All Aluminum, WiFi Enabled with G-Force Engine, Easy to Use, Whole House Power Backup, Smart Outage Solution - Bisque

  The Generac 7043 22kW Air Cooled Guardian Series Home Standby Generator offers robust and reliable protection for your entire home. Equipped with Mobile Link Wi-Fi connectivity, it allows for remote monitoring, providing real-time updates on generator performance and maintenance alerts. This feature ensures peace of mind, even when you're away. The generator comes with a 200-amp NEMA 3R smart switch for seamless power transfer, making it ideal for comprehensive household coverage during outages. Customers consistently praise its quiet operation, which is especially beneficial for residential use. With a powerful 22,000-watt output and less than 5% total harmonic distortion, it guarantees clean and stable power. The generator is engineered in the USA, featuring a durable G-Force Engine designed for longevity and reduced maintenance. This product is a reliable choice for those seeking high-quality, consistent power with the convenience of smart controls and versatile fuel options, including natural gas or LP gas.
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  Generac 6864 XD5000E 5000-Watt Diesel-Powered Portable Generator - Ideal for Emergency Backup Power and Job Sites - Reliable Power for Demanding Applications - CARB Compliant

  The Generac 6864 XD5000E Diesel-Powered Portable Generator is a robust and reliable power solution, perfect for both professional job sites and emergency backup scenarios. Its sturdy steel frame with an integrated lifting eye ensures easy transport and durability, making it ideal for demanding environments. With a 12-gallon diesel fuel tank, this generator offers an impressive runtime of up to 32.4 hours at 50% load, significantly reducing the need for frequent refueling. Equipped with an industrial-grade Yanmar LW Series 435cc diesel engine, it delivers consistent performance even under heavy-duty use. Customers appreciate its extended runtime and reliability, though note that a battery is required for operation and is not included. Overall, the Generac 6864 provides peace of mind with its clean and smooth operation, making it a valuable asset for those needing dependable power in remote or emergency situations.
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  Westinghouse 12500 Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered

  The Westinghouse 12500 Watt Dual Fuel Portable Generator is a robust and versatile solution for home power backup needs. Featuring a powerful 457cc engine, it delivers 9500 running watts on gasoline and 8500 on propane, ensuring you have reliable power during outages. Its dual-fuel capability offers flexibility, especially when gasoline is scarce. The generator's remote start feature, praised by users, adds convenience and ease of operation. With a 12-hour runtime on a 6.6-gallon tank, it can efficiently power essential home appliances, including air conditioning units, during emergencies. Safety is prioritized with rubber-covered outlets and an automatic low oil shutdown. Designed for easy mobility, it includes a handle and wheels, making it practical for residential use. Whether for weather-related outages or as an alternative to natural gas systems, this generator is a cost-effective and dependable choice. The Westinghouse generator combines power, convenience, and safety, making it a top pick for homeowners seeking reliable backup power.