Your Guide To The Best Diesel Pressure Washer


If you’re up against extreme dirt, you need an extreme pressure washer to handle the task. That’s where a Diesel Pressure Cleaners washer comes in.

Need a dairy shed cleaned out? Tick. Washing down greasy industrial machinery? Tick. Cleaning mining equipment? Tick, tick, tick.

Before we reveal the top models on the market, let’s look at the pros of buying a diesel pressure washer. Compared to electric or petrol pressure washers, diesel models have a lot to offer – especially for mine sites and industrial applications:

Diesel pressure washers are more fuel efficient.

Diesel Pressure Cleaners are designed to get the toughest commercial cleaning jobs done

Hands down, one of the biggest advantages of a diesel engine is fuel efficiency. If you compare a diesel pressure washer with a petrol equivalent, the higher compression of a diesel engine means it goes further.

Diesel Pressure Washers Have A Lower Cost Of Ownership

Ever wondered why big industries rely on diesel fuel to run their business? Whether you’re talking about generators, tractors, bulldozers, excavators or pressure washers, diesel engines last longer and cost less to run. The reason is simple: diesel engines don’t work as hard as petrol engines to get the same power output. Engine parts are under less stress, so they are less likely to break down. And diesel fuel is self-lubricating, meaning the fuel delivery system should also last longer than the petrol equivalent.

There Are Lots Of Added Extra Options

Many diesel pressure washers can be fully equipped with things like fuel tank bunding, fire extinguisher, safety stop, and other mine specifications needed on site. Some can be optioned with a long-range fuel tank and an electric start too.

 Ideal for heavy industrial and mining applications

All of the above means that diesel pressure washers are a good choice for heavy industrial and mining applications.

What To Look For In A Diesel Pressure Washer

Pay attention to the PSI. PSI means pounds per square inch, which tells you the cleaning pressure of the washer. When it comes to cleaning greasy industrial spaces and machinery, look for a PSI of 3000-5000.

Quality pump

With all the high-pressure water coming through the pump, you need a strong and durable pump that won’t break down easily. Some manufacturers, like Crommelins, offer a separate warranty for the pump.

Our Pick Of The Best Diesel Pressure Washers

 Crommelins Subaru 3000PSI Diesel Professional Pressure Washer

The Crommelins diesel pressure washer really packs a punch. It’s powered by a 9.4hp DY42 Subaru Engine and delivers a maximum power of 3000psi – enough to wash down greasy machinery and mining equipment, wash out dairy sheds, and clean awnings and shop fronts.

The unit features a tough roll frame, 10-metre hose with its own holder, plus wheels and a push handle to make it easy to move around. There’s also rubber isolated engine mounting to keep vibrations at a minimum.

If you need more, opt to equip your diesel pressure washer with bunding, safety stop and extinguishers as needed. At around $6500-$7000, this is a good quality investment.

 Jetwave Hornet Yanmar 3000PSI Diesel Professional Pressure Washer

Powered by a Yanmar L100 diesel air-cooled electric start engine, Jetwave’s diesel model delivers 3000psi pump working pressure with a water flow rate of 15 litres per minute.

But what really makes this unit stand out is its incredible efficiency. The pressure washer has direct injection technology, resulting in lower fuel consumption and running costs. Operators will love the effortless electric start, low vibration and low noise levels.


The diesel pressure washer is designed for long-life, featuring a fully welded and hot dipped galvanized roll frame and high-quality components. It’s also supported by worldwide spare parts back-up and a national service agent network. With all the bells and whistles, this model comes in at a very competitive $6500-$7000.


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