Which Bigboi Pressure Should I Get?

Which Bigboi Pressure Should I Get?

Which Bigboi WASHR Pressure Washer Is Right for You?

Choosing a pressure washer for detailing isn't simply a case of buying the machine with the highest PSI.

How often you wash, how dirty your vehicles get, whether you're working from home or on the road, and importantly, how much water the machine can move all make a difference.

The Bigboi WASHR range covers everything from weekend washing at home through to high-volume professional detailing. Here's the quick answer before we get into the details.

Quick Guide: Which WASHR Should You Choose?

Model Best For Why Choose It?
WASHR QUAD Home users & regularly maintained cars Compact, affordable and plenty for normal maintenance washing
WASHR DUO Serious enthusiasts & regular detailing More water flow and durability for frequent washing and dirtier vehicles
WASHR TRADIE Mobile professional detailers Professional performance in a portable package
WASHR PRO MKII Detailing shops & high-use professionals Maximum water flow, durability and serviceability

The really simple answer

Washing your own car at home? → QUAD

Want something more serious for frequent detailing, 4WDs or dirtier vehicles? → DUO

Running a mobile detailing business? → TRADIE

Running a detailing shop or want the best-performing machine in the range? → PRO MKII

Understanding Pressure Washers: PSI Isn't Everything

One of the biggest mistakes when comparing pressure washers is looking at PSI alone.

For automotive detailing, water flow, measured in litres per minute (L/min), is extremely important.

Think about rinsing shampoo off a car with a garden hose. Increasing pressure helps, but you still need enough water volume to actually carry the shampoo and contamination away.

A pressure washer works on the same principle.

More usable water flow can mean:

  • Faster and more effective rinsing

  • Better foam cannon performance

  • Easier removal of dirt and chemicals

  • Less time spent repeatedly going over the same area

That's why you'll notice the professional WASHR machines aren't simply chasing enormous PSI figures. They're designed around a useful combination of pressure and water flow for vehicle washing.

So, with that in mind, let's look at each machine.

WASHR QUAD

Best for: Home washing and regularly maintained vehicles

Approx. 1050 PSI | 7.45 L/min | Approx. 8 kg

The WASHR QUAD is the entry point into the Bigboi WASHR range and will make the most sense for a lot of people simply wanting a good pressure washer for looking after their own vehicles.

It's compact, lightweight and easy to store, while still being designed specifically with automotive washing in mind.

The QUAD is particularly well suited to vehicles that are washed regularly and don't accumulate large amounts of heavy dirt.

That makes it a great option for:

  • Everyday cars

  • Ceramic-coated vehicles

  • Classic and weekend cars

  • Regular maintenance washing

  • Home users with limited storage space

It has the lowest pressure and water flow of the four machines, but that's not necessarily a negative.

If you're washing your own well-maintained car every weekend or fortnight, you probably don't need to pay for the capabilities of a commercial pressure washer.

Choose the QUAD if...

You want a compact detailing-focused pressure washer for washing your own cars at home without paying for professional-level equipment you don't need.


WASHR DUO

Best for: Serious enthusiasts, frequent washing and dirtier vehicles

Approx. 1350 PSI | Approx. 7.7 – 8.2 L/min tuned water flow

The WASHR DUO is where we'd look if you've outgrown a basic home pressure washer but don't need to jump all the way to a commercial PRO setup.

It uses a brushless induction motor combined with a German-designed wobble plate and brass pump head, giving it a step up in capability for people who detail regularly.

The additional performance becomes particularly useful if you're frequently cleaning larger or dirtier vehicles.

Think:

  • 4WDs

  • Tradie vehicles

  • Boats

  • Larger vehicles

  • Regular detailing

  • Multiple vehicles at home

  • Vehicles that see more dirt and grime

It's also a strong choice for the serious home enthusiast who simply wants a more substantial long-term detailing setup.

Choose the DUO if...

You're washing frequently or dealing with dirtier vehicles and want something more capable than an entry-level home machine without needing a full commercial pressure washer.

WASHR TRADIE

Best for: Mobile professional detailers

Approx. 1300 PSI | 8.8 L/min | Approx. 19 kg

The WASHR TRADIE has a very specific job: delivering professional pressure-washer performance without requiring a mobile detailer to haul a large commercial machine in and out of their setup every day.

Its 8.8 L/min water flow gives it strong rinsing performance, while the commercial forged-brass triplex pump is designed with professional use in mind.

But the big advantage here is portability.

At approximately 19 kg, it's much better suited to being incorporated into:

  • Mobile detailing vans

  • Trailers

  • Utes

  • Portable professional setups

It can also be used with suitable generators and extension leads, which is an important consideration when you're working at different locations rather than from one fixed detailing shop.

TRADIE vs DUO

If you're wondering why you'd choose the TRADIE over the DUO, it comes down to professional use, water flow and portability.

The DUO makes a lot of sense for a fixed home or detailing setup.

The TRADIE is designed for the professional who needs to take their pressure washer to the job.

Choose the TRADIE if...

You're a mobile detailer and need professional performance but portability is a major part of your setup.


WASHR PRO MKII

Best for: Professional detailing shops and high-volume washing

1450 PSI tuned pressure | 9.2 L/min water flow | Standard Australian 10A power

At the top of the range sits the WASHR PRO MKII.

This is the machine we'd look at for professional detailers, detailing shops and serious enthusiasts who want the highest level of performance in the WASHR range.

And the number that really stands out isn't necessarily the PSI.

It's the 9.2 L/min water flow.

That combination of 1450 PSI tuned pressure and high water flow gives the PRO excellent rinsing capability without simply relying on excessive pressure.

Internally, it steps up to a commercial-duty Italian-designed triplex forged-brass pump paired with a brushless induction motor. It's also fully serviceable and operates at under 80 dB.

One particularly useful feature of the current Australian PRO MKII is that despite its commercial performance, it's designed to operate from standard domestic 10A power.

For a professional environment where the pressure washer may see substantially more use than a typical home machine, its durability and serviceability become just as important as the performance figures.

Choose the PRO MKII if...

You're washing professionally, operating a detailing shop, doing high-volume work or simply want the best combination of water flow, pressure, durability and serviceability in the WASHR range.

QUAD vs DUO vs TRADIE vs PRO: Which One Should You Buy?

The easiest way to make the decision is to think about how you're actually going to use it.

WASHR QUAD

Home user / regularly maintained vehicles

Choose this if you're primarily washing your own cars and want a compact, affordable detailing-focused pressure washer.

WASHR DUO

Serious home user / frequent detailing / dirtier vehicles

Choose this if you wash regularly, have larger or dirtier vehicles, or simply want to step up from an entry-level home machine.

WASHR TRADIE

Mobile professional

Choose this if pressure washing is part of your business and you need professional performance in a machine designed to move between jobs.

WASHR PRO MKII

Professional shop / high-use / maximum performance

Choose this if the machine is going to see frequent professional use and you want maximum water flow, durability and serviceability.

Our Final Tip: Don't Buy on PSI Alone

When comparing pressure washers online, it's easy to assume more PSI automatically means a better pressure washer.

For detailing, that's far too simple.

Look at the whole machine, particularly its water flow, pump design, intended workload, portability and serviceability.

A weekend enthusiast washing a ceramic-coated car at home has completely different requirements from a mobile detailer washing several vehicles a day. And a busy detailing shop has different requirements again.

That's why there isn't one WASHR that's "best" for everybody.

The goal is to choose the machine that suits how often you wash, what you're washing and where you're washing it.

QUAD → Home washing

DUO → Serious home detailing and dirtier vehicles

TRADIE → Mobile professional detailing

PRO MKII → High-use professional detailing

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