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Karcher K 4 Compact Pressure Washer (1.637-508.0)

SKU 1.637-508.0
BARCODE 4054278680736
By: Karcher
Save 4% Save 4%
Original price $649.00
Original price $649.00 - Original price $649.00
Original price $649.00
Current price $622.51
$622.51 - $622.51
Current price $622.51
Availability: This product will be delivered in 3-5 business days

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Delivery Notice:

Please allow 3-5 business days for processing before it's ready for delivery or pickup. All standard delivery options still apply.

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Karcher K 4 Compact Electric Pressure Washer (130 Bar) – High-Pressure Cleaner

Instantly obliterate heavy, baked-on grime from your property and effortlessly maintain a pristine outdoor aesthetic with the highly versatile Karcher K 4 Compact Electric Pressure Washer. Designed specifically for demanding homeowners who require massive cleaning power without sacrificing vital garage storage space, this premium high-pressure cleaner packs the formidable performance of the legendary Karcher K 4 series into an ultra-streamlined, vertical chassis. Driven by a highly efficient, 1800W water-cooled motor, it generates an aggressive 130 Bar (approx. 1885 PSI) of pressure and a high 420 L/h flow rate, effortlessly stripping mud from 4x4 vehicles, mold from garden fencing, and dirt from brick patios.

Operator convenience and flawless mobility are at the core of the K 4 Compact's design. The machine features two robust carrying handles and a telescopic aluminum handle, making it incredibly easy to transport around the yard or load into the boot of a car. It arrives fully loaded with Karcher’s highly advanced Vario Power spray wand (allowing you to instantly adjust pressure on the fly) and the devastating Dirt Blaster lance for targeting rock-hard concrete stains. Equipped with a built-in detergent suction mechanism and an anti-kink swivel joint on the 6m hose, this compact pressure washer is the ultimate, space-saving weapon for maintaining a flawless domestic property.

Who Is The Karcher K 4 Compact Pressure Washer Ideal For?

The K 4 Compact delivers 130 Bar of water-cooled power in an ultra-portable design. It is highly recommended for:

  • Serious Domestic Homeowners: Utilizing a highly powerful high-pressure cleaner to rapidly blast heavy black mold off concrete driveways, wash down brick retaining walls, and clean delicate outdoor timber furniture safely.
  • Automotive Enthusiasts: Relying on the fully adjustable Vario Power wand to safely dial down the pressure, allowing them to rinse heavy snow foam and road grime off expensive car paint and alloy wheels without causing damage.
  • Apartment & Townhouse Dwellers: Taking advantage of the ultra-slim, vertical compact pressure washer design. It takes up virtually zero floor space, making it perfectly suited for tiny garages or laundry closets.
  • Property Maintenance Cleaners: Easily lifting the lightweight, 11.4kg machine in and out of a small work van to execute light-duty exterior washing and window cleaning on client properties.

Key Features and Performance Benefits:

  • Formidable 130 Bar Output: The 1800W motor delivers serious domestic cleaning force. It provides the aggressive water-cutting power required to completely obliterate stubborn stains and heavy mud from large outdoor surface areas quickly.
  • Water-Cooled Motor Technology: A massive durability feature. The premium internal motor uses the cold water you are spraying to constantly cool its internal components. This drastically prevents overheating and vastly extends the lifespan of the machine.
  • Ultra-Compact & Telescopic: Designed to save massive amounts of space. The aluminium transport handle extends for easy pulling, and retracts completely flat, allowing the machine to be stored on tight garage shelves.
  • Vario Power & Dirt Blaster Lances: Arrives with two specialized lances. The Vario wand allows you to twist the nozzle to instantly lower the pressure for delicate cars. The Dirt Blaster uses a spinning turbo jet to rip heavy mold off concrete.
  • Built-in Detergent Suction: Features an integrated chemical suction tube. You simply drop the tube into a bottle of Karcher detergent, and the machine automatically applies soapy foam to your car or driveway at low pressure.

Technical Specifications & Inclusions:

  • Brand: Karcher (Home & Garden Series)
  • Model: K 4 Compact (1.637-508.0)
  • Product Type: Electric Pressure Washer / Compact Pressure Washer
  • Rated Power Input: 1800 Watts (Water-Cooled Motor)
  • Max Pressure: 130 Bar / 13 MPa (Approx. 1885 PSI)
  • Flow Rate: 420 Litres per hour (420 L/h)
  • Weight: Approx. 11.4 kg
  • Dimensions: 260mm (L) x 305mm (W) x 578mm (H)
  • Inclusions: 6m High-Pressure Hose, Vario Power spray wand, Dirt Blaster lance, Trigger Gun.

Dispatch: Items marked as “In stock” or “Ready to be shipped” are usually dispatched within 1 business day after payment is received. If an item is not in stock and ordered from our supplier, please allow 3–5 business days for processing before it is ready for delivery or pickup. All standard delivery options still apply.

Shipping: Delivery costs are calculated at checkout based on your location and order size. Bulky items and chemicals may attract additional freight charges and cannot be sent to PO Boxes.

Delivery: Parcels are delivered by road freight. Authority to leave may be used if no one is available to receive the order. For full details, please see our Shipping & Delivery Policy

Business days to delivery

NSW
City 1 Day
VIC
Melbourne 1 Day
Regional 3–4 Days
QUEENSLAND
Brisbane 1–2 Days
Regional 3–4 Days
SOUTH AUSTRALIA
Adelaide 2–3 Days
Regional 4–5 Days
NORTHERN TERRITORY
All Areas 4–6 Days
WESTERN AUSTRALIA
All Areas 4–6 Days
TASMANIA
All Areas 4–6 Days
What is the difference between the standard K 4 and the K 4 Compact?

Internally, they have the exact same highly powerful 1800W water-cooled motor and pump, delivering identical 130 Bar pressure. The 'Compact' simply features a heavily redesigned, slimline plastic chassis and telescopic handle, making it much easier to store and transport.

Can I plug this into a normal household power point?

Yes, absolutely! It operates on a standard 10-Amp Australian plug, meaning you can plug it straight into any normal wall socket in your garage or house without tripping the breaker.

What does a 'Water-Cooled Motor' mean?

Cheap pressure washers use basic air fans to cool the motor, which often fail on hot days, burning the machine out. The K 4 routes the cold water from your garden hose in a jacket around the motor, actively cooling it down. This drastically increases the motor's lifespan.

What is the 'Dirt Blaster' lance used for?

The Dirt Blaster takes a pinpoint jet of water and spins it at thousands of RPMs. This creates a highly aggressive cone of water that drastically multiplies the cleaning power, ripping heavy mold and dirt off hard concrete instantly. Do NOT use it on cars or soft timber.

How do I change the pressure so I don't strip my car's paint?

You use the included 'Vario Power' spray wand. By simply twisting the barrel of the wand with your hand, you can instantly dial the pressure down to a soft, safe fan for washing cars, or turn it up to 'Max' for cleaning bricks.

How do I apply soap with this machine?

The K 4 features a small, clear suction tube that pulls out of the back of the machine. You drop this tube directly into your bottle of detergent, twist your Vario wand to the lowest pressure setting ('Mix'), and the machine will automatically spray the soap.

Can I suck water from a bucket if I don't have a tap?

Yes. The Karcher K 4 pump is highly advanced and features a suction capability. You will need to purchase a specific 'Karcher Suction Hose with Filter' accessory to safely draw water from a static bucket or rain tank without damaging the pump.

Will the hose kink easily?

The K 4 Compact includes a 6-metre high-pressure hose. While it is highly durable, to prevent kinking, Karcher has designed an anti-kink swivel joint where the hose meets the trigger gun, stopping the hose from twisting into tight knots while you walk around.

Is the machine heavy to carry?

It weighs 11.4kg. Because it features two distinct, heavy-duty carrying handles (one on top, one on the bottom), it is incredibly easy and highly ergonomic for an adult to lift into the boot of a car or carry up a flight of stairs.

Can I run hot water into this machine?

You must be very careful. The internal plastic pump components are generally rated for a MAXIMUM inlet water temperature of 40ºC. Pumping blistering hot water through this domestic machine will permanently warp the pump manifold and destroy the seals.

Can I attach a surface cleaner to wash my driveway?

Yes! The trigger gun utilizes Karcher's universal domestic bayonet fitting. You can easily purchase and click in a 'Karcher T-Racer' surface cleaner to wash massive flat concrete areas rapidly without splashing dirty water everywhere.

Do you offer trade pricing for property maintenance teams?

Yes, Freshway Supplies provides highly competitive volume pricing and trade accounts for domestic cleaning contractors, real estate maintenance teams, and facility managers outfitting their equipment. Contact us to establish your account.

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