If you’ve ever wrestled with a dirty driveway, grimy tools, or stubborn oil stains on your concrete, you know that a basic hose just doesn’t cut it. That’s where a high pressure washer comes into play—and if you’re after raw power, reliable performance, and value for money, Giantz high pressure washers are hard to beat.

In this guide, we’re diving into why Giantz has become a top name in the Aussie market, especially for those after high pressure water cleaning with large washer capacity and petrol-powered punch. Whether you’re a weekend warrior or a full-time tradie, there's a Giantz washer built for you.

What Makes Giantz High Pressure Washers Stand Out?

Giantz isn’t just another generic power tool brand. Over the past few years, they've carved out a solid reputation in Australia for offering powerful, no-nonsense tools at a price that won’t empty your wallet.

When it comes to high pressure washers, Giantz delivers models with serious grunt—especially their petrol-powered washers, which are ideal for large outdoor cleaning jobs where electricity might not be easily available.

Here’s what makes them worth a second look:

1. Massive Power for Deep Cleaning

Let’s face it—low pressure just doesn’t get the job done. Whether you’re cleaning moss off your bricks, blasting mud off your 4WD, or prepping a deck for painting, you need serious pressure. Giantz petrol washers offer up to 4800 PSI, which puts them among the largest washers available in the home-use category.

And it’s not just about pressure—it’s about water flow too. Many models push out 10 litres per minute or more, which gives you a faster, more effective clean.

2. Petrol Power = Total Freedom

One of the best things about going with a high pressure washer petrol model is the freedom to work wherever you want. No need to hunt for power points or worry about tripping over extension cords.

Giantz petrol washers are built with robust 4-stroke engines that run smoothly and efficiently. They’re ideal for farms, large properties, job sites, or even mobile car detailing businesses. Just fuel up and go.

3. Built for Aussie Conditions

From Queensland’s heat to Melbourne’s moody weather, Giantz gear is designed to handle tough environments. Their high pressure washers come with sturdy steel frames, solid wheels for mobility, and corrosion-resistant pumps. Many models also include turbo nozzles, long hoses, and detergent tanks to tackle a variety of surfaces and grime levels.

Large Washer Capacity = Less Fuss, More Clean

One of the biggest frustrations with cheaper or underpowered washers is how often you have to pause—either because the unit overheats, runs out of detergent, or can’t keep up with demand.

Giantz addresses that with a large washer capacity, including:

• Generous fuel tanks on petrol models for extended use
   

• High-capacity detergent tanks to cover larger areas without refilling
   

• Heavy-duty water pumps capable of long, continuous use without stress
   

So whether you’re cleaning a warehouse floor, a fleet of vehicles, or your back patio, you’re spending more time cleaning and less time stopping.

Which Giantz High Pressure Washer Should You Choose?

Giantz offers a few different models, so here’s a quick breakdown of popular options to help you decide.

???? Giantz 4800 PSI Petrol High Pressure Washer

• Pressure: Up to 4800 PSI
   

• Engine: 10HP petrol, 4-stroke
   

• Water Flow: 10L/min
   

• Includes: 5 nozzles, 20m hose, heavy-duty wheels
   

This is one of the largest washers in the Giantz lineup and a favourite among tradies and serious DIYers. It’s perfect for large-scale jobs—think concrete cleaning, roof washing, or commercial vehicle fleets.

???? Giantz 3800 PSI Petrol Washer

• Pressure: 3800 PSI
   

• Engine: 7HP petrol
   

• Water Flow: 8.5L/min
   

• Great for: Homeowners with big driveways, garages, or patios
   

This one strikes a great balance between power and portability. It's still petrol-powered for maximum freedom but lighter and easier to store than the top-end model.

???? Giantz 3500 PSI Electric High Pressure Washer

• Pressure: 3500 PSI
   

• Power Source: Electric
   

• Water Flow: 7L/min
   

• Best for: Regular domestic use, deck cleaning, windows, cars
   

If you prefer plug-and-play simplicity, this electric model is a compact but powerful choice for homeowners who want effective high pressure water cleaning without messing around with petrol.

What Can You Clean with a Giantz High Pressure Washer?

You might be surprised just how many uses these machines have. Here’s a look at some of the most common applications:

✅ Driveways & Patios

Blast away years of grime, oil stains, and mildew in minutes. With the right nozzle and detergent, your concrete will look brand new.

✅ Vehicles & Machinery

From caravans to tractors, a Giantz high pressure washer can help you keep your gear clean and rust-free.

✅ Decks & Fences

Strip off old paint or clean algae and moss from timber surfaces without scrubbing for hours.

✅ Brick & Paving

Bring back the colour of your pavers and brickwork without harsh chemicals.

✅ Roofs & Gutters

Some models come with long extension hoses or are compatible with gutter cleaning attachments—making high-up cleaning a breeze.

Tips for Getting the Best Out of Your Washer

To get the most out of your high pressure washer petrol model (or electric), keep these tips in mind:

• Choose the right nozzle: Most Giantz models come with multiple nozzles for different pressures and spray patterns.
   

• Pre-soak with detergent: Let the detergent sit for a few minutes before rinsing for better results.
   

• Use proper technique: Start with low pressure and adjust as needed to avoid damaging surfaces.
   

• Maintain your gear: Regular oil changes (on petrol models) and hose checks will keep your unit running strong.
   

Is a Giantz Washer Right for You?

If you're looking for a powerful, reliable, and affordable pressure washer, especially one with a large washer capacity, Giantz ticks all the boxes. Their petrol-powered models are especially handy for larger properties, job sites, or anyone who needs serious grunt without being tied to a power cord.

You’re getting the kind of performance you’d expect from higher-end commercial units—but at a price more suitable for a homeowner or small business.

 

Final Thoughts

A good high pressure water cleaning tool doesn’t just save you time—it saves your back, your budget, and your sanity. Whether you're tackling a dirty driveway or cleaning up after a renovation, a Giantz high pressure washer delivers the results you’re after without the hassle.

So if you’ve been thinking about upgrading your cleaning game, now’s a great time to explore the range of largest washers and petrol models that Giantz has to offer. You’ll wonder how you ever lived without it.

 

Ready to blast away the grime?
Check out the full range of Giantz high pressure washers online and get your property sparkling clean in no time.