Can You Run a Diesel Generator Continuously 24/7/365?

Diesel generators are built to run for long periods of time, and many businesses require them to do just that. However, there are a few things you need to keep in mind if you’re planning on running your diesel generator around the clock.

How long can you continuously run a diesel generator?

Diesel generators often have big long-range tanks. Most manufacturers suggest a maximum of 500 hours of standby generator usage, depending on the generator in question. This is about three weeks’ worth of constant usage.

How long can a diesel generator run continuously in a day?

Diesel generators can run a full 24-hour period if needed. However, it is best to run them only between 8-20 hours at a stretch and then let them cool down for a time.

Most generators suggest that you operate them for at least 500 hours at a period, which is around 21 days. This means you may check the oil and coolant levels while you wait for a cooling down period.

A Good Diesel Generator

Generac 6864, 5000 Running Watts/5500 Starting Watts, Diesel Powered Portable Generator

Can you run a generator for 24 hours?

Over a 12- to 24-hour period, generators may build up a little amount of surplus heat, but if you go beyond a day of continuous operation, you run the danger of damaging your generator.

Can a diesel generator run 24 hours a day?

A 24-hour tank is standard for most diesel generators, although 48- and 72-hour tanks are also available. After shutting down your diesel generator, wait at least a few hours before refilling it with fuel. Natural gas generators may theoretically operate eternally since they are linked to a home’s natural gas pipes.

How many hours can a generator run continuously?

While a standby generator can power a medium-sized house for up to 3,000 hours on average, using one for more than 500 hours continuously (even with breaks) is not advised.

Recommended Gas / Dual Fuel Generators

WEN DF1100T 11,000-Watt 120V/240V Dual Fuel Portable Generator with Wheel Kit and Electric Start – CARB Compliant

DuroStar DS13000EH Dual Fuel Portable Generator – 13000 Watt Gas or Propane Powered – Electric Start – Home Back Up & RV Ready, 50 State Approved

Related Questions and Answers

What is needed if the generator heats up from continuous and long usage?

Components in the generator grow hot from the constant operation, resulting in a malfunction. Having a cooling and ventilation system in place is vital to remove the heat generated throughout the operation.

How many hours will a Kubota diesel generator last?

A two-year or 2,000-hour warranty is given to Kubota’s industrial engines; critical engine components are covered for three years or 3000 hours. It doesn’t matter which comes first. Kubota diesel engines may survive up to 10,000 hours with appropriate maintenance.

How long can you leave a generator running?

This video should provide some details:

Can a generator overheat in the sun?

A generator might overheat and fail if it is exposed to direct sunlight and insufficient air circulation.

Why do diesel generators overheat?

Low coolant levels, inappropriate usage, or a malfunctioning generator may all result in overheating.

How many things can be plugged into a generator?

You may use your portable generator to power anywhere from 10 to 50 electrical outlets in your house, depending on the size and performance of your generator. If you have 15 or 20 amp outlets in your house, the total wattage is 1,800.

What does wet stacking a generator mean?

In the early days of diesel engines, the phrase “wet stacking” was used to describe a thick, black material flowing from the exhaust pipes, or “stacks.” Unburned gasoline and soot are sent into the exhaust system when the engine is run at low revs for a lengthy period of time.


Diesel generators are designed to run for extended periods of time so that you have the power for as long as you need it. However, it is not a good idea to run them continuously for days on end without giving them a break and doing maintenance checks.

How long does a generator need to cool down?” is a question that has been asked many times. The answer to the question is dependent on the type of generator and how often it will be used.

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James Sylvester
About James Sylvester

James S. Sylvester is an experienced OSHA Safety Supervisor with years of experience in the construction and oil & gas industries. He focuses on workplace safety, occupational health and safety systems. Learn more about James' here or connect with him on Twitter