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Diesel Generators for Sale (2,990)

At United Rentals, we offer an extensive range of high-quality diesel generators for sale, designed to deliver robust and reliable power solutions when you need them most. Whether you need standby power for your home, emergency power for your business or a mobile power solution for on-the-go operations, trust United Rentals to provide the pre-owned diesel generator that best fits your project.

For our full list of diesel generators, view the items below. For more information about diesel generators, visit our resource section.



FAQs About Diesel Generators

United Rentals supplies top-tier used diesel generators for sale. Diesel generators are often used as backup or primary power sources in areas with limited or no natural gas or electricity access. They provide power for tools, equipment and appliances when no other source of electricity is available. United Rentals offers a robust selection of used diesel generators ranging in size and power to suit any project. They're durably built to withstand the rigors of industrial and construction sites and harsh weather conditions. Conveniently portable, these units are towable and can be transported to and from locations at your discretion. Browse United Rentals' collection of used diesel generators for sale to find your next power source today.

Learn more about our diesel generators in our FAQ section below.

What can a generator power?

Generators can be used to power electrical items including appliances, HVAC units, lights and more. It is recommended that generators are not used for more than 500 hours continuously to avoid health and safety hazards.

How much power do portable generators produce?

Portable generators can produce up to 2,000 kilowatts. There are also lower power ratings for smaller or less intense generator needs. United Rentals offers a wide selection of generators with varied power ratings to suit multiple job tasks.

How do I buy a generator for power outages?

United Rentals is happy to provide you with a vast range of used diesel generators for sale. Browse our site today to find exactly what you need to get the job done. When you’ve made your selection, feel free to utilize our “Request Information” feature and connect with a United Rentals specialist to guide you through the purchasing process.


Diesel Generators in Action

Your equipment, treated like our own.
Maintenance, service, repair and parts — when and where you need it.

Our Customer Equipment Solutions team specializes in equipment repair and service in the field and onsite, so you can protect your investment; safeguard your employees; and meet ANSI, OSHA, and CSA requirements.

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Right equipment. Right solutions. Right now.
Whether you're buying or renting, United Rentals is ready to provide United Results.

There's no such thing as downtime with United Rentals. Easily rent or buy online from the largest inventory of equipment, or call and visit any of our over 1,100 branches throughout North America. From rentals to sales to turnkey solutions, United Rentals is ready with quality equipment and decades of expertise.