Skip to content Skip to footer

Pros and Cons of Diesel Generators Explained

Diesel generator

Diesel generators have long been one of the most important power backup sources for different industries. The generators are rugged, durable, and last for a long time. These generators can take a high load with minimum wear and tear.

Whether you need a diesel generator for a mining operation, construction project, or hospital backup source, you should know about the pros and cons to ensure that you have made the right decision.

Advantages of Diesel Generators


One of the foremost considerations when buying a generator is the cost. Compared to other types of generators, diesel generators are the least costly. The generators have lower prices as compared to gasoline generators since they have fewer moving parts.

Diesel generators don’t just have lower upfront costs than gasoline generators. These generators are less costly to maintain as well. There are fewer parts to replace due to which the cost of maintaining the generator is generally lower. The replacement cost of diesel generators is also lower compared to gasoline generators.  So, you will save cost up front and in the long run due to lower purchase and maintenance cost.

Fuel Efficiency

Fuel efficiency is also a major consideration when buying a generator. Diesel generators are far more fuel efficient as compared to gasoline generators. Diesel has a higher thermal efficiency than gasoline. Generators that run on diesel can operate for longer hours than the generators that run on gasoline. Higher fuel efficiency means that you will save on fuel costs.


Diesel generators undergo less wear and tear as compared to gasoline generators. This results in the greater life of generators that run on diesel. If properly maintained, diesel generators can last for up to 10 years or more.

Disadvantages of Diesel Generators


One of the cons of diesel generators is that they make a lot of noise. This may be a problem if you intend to use the generator in the backyard or garage. The generator needs to be placed inside a soundproof canopy to reduce the noise during operation.


Another drawback with diesel generators is that they create gasses that are more harmful to the environment than gasoline or natural gas. You should consider diesel fuel additives that consist of nano-particle technology for increasing the efficiency of fuel burning. Using the additives can help reduce emissions and also improve fuel efficiency.


You must consider the pros and cons before buying a generator for your home or office. If you decide to buy a diesel generator, you must follow the maintenance schedule mentioned in the manual. Following the instructions of the manufacturer is important to ensure that the generator performs efficiently with less pollution and higher efficiency.

Make sure that you buy a branded high-quality generator. Generac Superstore deals with all types of residential and industrial generators for industrial use. We specialize in the sale of branded generators. In addition, we also offer generator repair in Huntsville and scheduled generator service in Alabama. You can contact us by dialing (855)-880-1880 today for sales, installation, and repairs of diesel and gasoline generators. Our professional technicians have been providing generator maintenance in Huntsville and Birmingham, AL, and Nashville, TN for more than a decade.