Are Diesel Generators a Good Buy?

By Kevin Malone

Contractors need a reliable source of power. Diesel generators can provide the power you need, whether you are applying spray foam or doing just about any type of construction or contract work. For example, you need a fair amount of power to run multiple systems, such as a compressor, air dryer, and spray foam machine.

The best diesel generators will provide the power output you need to get the job done efficiently.

The Benefits of Diesel Generators

Diesel generators are great for a wide variety of jobs: they’re dependable and well-built, so you can rest assured knowing that you’ll have the power you need to get the job done right.  That’s why you’ll see them on some of the most rugged and demanding job sites.

With the best diesel generators, like WINCO generators, you get continuous power for the most demanding jobs.

Other benefits include:

Fuel Costs

While diesel fuel may be more expensive than gas, diesel generators require less fuel, which makes them more cost-efficient. Compared to gasoline storage, diesel fuel also lasts longer with a shelf life of up to six to 12 months, two to four times longer than gas.

More Efficient Power Generation

Diesel generators are more efficient when it comes to generating power. Diesel generators compress air and fuel into the engine separately, allowing them to use less fuel for power output.

Diesel generators also work well under large loads and are made to produce electricity for long periods to power demanding jobs.

Long Lifespan

With the proper care and maintenance, diesel generators have long lifespans—even decades. Diesel generators do not have spark plugs or carburetors, which means fewer potential breakdowns and reduced maintenance.

Because diesel generators last a long time, they often have good resale value. If you decide to replace one of your units, upgrade to a model with larger capacity, or sell it down the line, there is a market for generators you can tap into.

So, Are Diesel Generators a Good Buy?

In most cases, the answer is yes. However, it depends on your specific use case and your job type.  When selecting a generator, here are the things you need to consider:

  • Fueling: Most portable generators today run on diesel, but make sure you check. There are gas-powered generators that may work for you, too. When considering fuel, you will also want to see how easy it is to refuel to limit downtime during jobs.
  • Tank size: The size of the tank will determine how long your generator can run. While diesel generators run efficiently, you will want to make sure you have enough capacity to handle jobs without constant refueling.
  • Portability: You will want to consider the type of generator you need. Would your business be better served by a portable generator, a trailer-mounted generator, or a big generator installed in your rig?
  • Power requirements: Do you need a single-phase or three-phase system? Do you need variable power outputs? Power requirements will depend on what you are powering and how much power you need to draw. Generators must have a rated and maximum output to support your job, including enough power to start and run your equipment.
  • Noise: Today’s diesel generators are significantly less noisy than in years past. For some jobs, however, noise attenuation may be a concern. Work with your supplier to determine the right balance between cost and quiet.
  • Maintenance: Any generator requires some generator service over time to avoid breakdowns or downtime and keep your equipment operating optimally. You will need to look at what kind of maintenance is required and how often and get an idea of the cost to keep your equipment in tip-top shape.

The experts at Intech Equipment & Supply can help you find the right solution for your business whether you need a new generator or you are considering used equipment, need a primary power source, or are looking for backup power. We can right-size all of your equipment for how you do business.

Intech Equipment & Supply is a full-service spray foam equipment and parts supplier. We provide everything you need to grow your spray foam business, from replacement parts to custom turnkey foam insulation rigs and safety equipment. We can help you find the right WINCO generator or a diesel generator from other top brands.

Call Intech Equipment & Supply at 866-652-9975 or contact us online to discuss your power and generator needs.

About Kevin Malone
Kevin Malone is a leading expert in the spray foam insulation industry with 34 years of experience in spray foam fluid handling and a passion for innovation. He currently offers his extensive knowledge to Intech Equipment and Supply customers by supporting them in selecting quality spray foam equipment to optimize their business. Learn more about Kevin here.


Intech Equipment & Supply was founded in 1995, and has since grown to become the leader in spray foam equipment, mobile spray foam rigs, and parts supplier. With locations all across North America we are available when you need us most.