Choosing Between Diesel and Gas Generators

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When choosing a generator, you have three options; diesel, or gas. Both have their own distinct advantages and disadvantages. Therefore, the ultimate choice will come down to personal preferences. But diesel and gas generators are vastly different. From fuel source, emission regulations and even cost, it is important to look at each of these aspects with respect to the type of generator you wish to purchase.

It’s also important to know that when we say gas generators we mean natural gas, not petrol. Some countries do refer to petrol as “gas”, but fortunately most sellers you can buy petrol generators from will indicate it as such. This should help you focus between diesel or gas but it doesn’t hurt to double-check if you have decided to buy a gas generator.

In this article, we will discuss the pros and cons for diesel and gas generators for you to consider when making the purchase – and for more information on different types of generators, head on over to Able Sales.

Diesel Generators

They come in many shapes and sizes to suit every need and use diesel as the primary source of fuel.


  • Diesel generators often require less maintenance which can significantly reduce the overall cost of owning one.
  • These generators are also durable, sturdy and reliable, giving them longer lifespans.
  • They are also typically smaller than gas generators. This means that they take up less space and can be easily transported.
  • They are ideal or portable, mobile or rental applications as well as standby sources of power.
  • Diesel generators are also very fuel efficient when compared to the huge volume of gas that is needed for gas generators.
  • They are also a lot safer since diesel is less flammable and less explosive as compared to other fuel sources.
  • Tier 4 Diesel generators emit less nitrogen oxides and particulate matter as compared to other models.


  • The cost of maintaining a diesel generator can be affected by fluctuations in diesel prices
  • Because of Tier 4 regulations, diesel generators can be more expensive.
  • They are also often louder than gas generators
  • Diesel fuel is not always readily available which makes it necessary to store the fuel or procure it every time you want to run the generator.

Gas Generators

Gas generators also come in a variety of shapes and sizes foe different purposes and applications.


  • Because natural gas generators are usually connected to the gas line, there is always a readily-available fuel source on hand.
  • The availability of a fuel source makes them a reliable source of power for numerous applications.
  • They cost less to produce which makes them affordable as compared to diesel generators that can be quite expensive.
  • Natural gas is a cleaner source of energy with fewer emissions than most other fossil fuels.
  • It doesn’t produce the pungent order that is often associated with burning diesel fuels.


  • Natural generators require a lot more maintenance than diesel generators. This also means that they require more downtime and costly to maintain.
  • They also have a shorter lifespan
  • They are significantly larger than diesel generators. This makes them harder to transport and they also occupy a lot of space.
  • Natural gas flow can be easily disrupted by natural disasters
  • Natural gas is highly explosive and can be hazardous especially when a pipeline bursts.

Natural gas emits more carbon dioxide than diesel despite the fact that it is a cleaner source of fuel.