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Kärcher K4 - 1900 PSI 1.5 GPM Electric Pressure Washer

The Kärcher K4 is an electric pressure washer offering a maximum water pressure of 1900 PSI and flow of 1.5 GPM. (Read full specs)

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Kärcher K4 1900PSI Electric Pressure WasherKärcher K4 1900PSI Electric Pressure Washer
This product has a newer version, the K4 Power Control.

Features and Specifications

FuelElectric
HandlingPortable
WaterCold (104°F max.)
PSI1900
GPM1.5
Cleaning Units2850
Motor13 amp, induction
PumpN-COR Axial
Other model numbers1.603-152.0
FramePlastic
Soap injectionYes
Soap tankRemovable
Soap dilutionAdjustable
NozzlesN/A
Onboard storageYes
Hose25 ft
Hose storageHooks
Dimensions
(D x W x H)
Approx. 12 x 15.6 x 34.3 in
Weight26.5 lbs
Wheels2 wheels
Included accessoriesVPS wand, spray gun, high pressure hose, dirt blaster, detergent tank, 35 ft GFCI power cord
SecurityTrigger lock
Warranty2 years
UPC886622015468

Unlike many websites, we did our best to research each of the specs above. That being said, we are not immune to making the occasional mistake or omission. Should you notice any missing or incorrect values, don't hesitate to suggest improvements so we can address the issue.

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Description

Karcher’s 1900 PSI K4 pressure washer delivers exceptional cleaning power for most cleaning jobs. The patented induction motor is water cooled to increase life up to 5X. The Vario spray wand allows for quick adjustment between low and high pressure without the need to switch nozzles. For stubborn stains, the patented Dirtblaster® spray wand will clean up the toughest chores. Onboard detergent tank included.

Zoom on the Kärcher K4

In summary, the Kärcher K4 is a light to medium duty pressure washer, that offers an all-around versatile cleaning experience, and also:

  • spot cleaning of hard, unpainted surfaces or high reach areas
  • cleaning of painted or delicate surfaces
  • application of detergent and cleaning solutions

Its power characteristics and design, its main features and all its additional features are presented ahead.

Power

Powered by a 13 amp induction motor, its axial pump can deliver a pressure of 1900 PSI (around 32 times more than a standard garden hose) and a flow of up to 1.5 GPM (CETA-certified values). Combined, these values mean that the Kärcher K4 has a cleaning power of 2850 Cleaning Units.

Being an electric pressure washer, the Kärcher K4's motor can be easily started by a convenient ON/OFF switch. The unit is ready-to-use with peace of mind, thanks to the included 35 ft GFCI cord.

Design & Handling

With its portable design and approximate dimensions of D12 x W15.6 x H34.3 in, the Kärcher K4 makes mobility one of its core strengths. The handle adds to the K4 convenience of transport.

With a weight of only 26.5 lbs, the unit is very easy to carry around. This is, in part, thanks to its plastic frame, which allows it to remain as lightweight as possible. On top of its light weight, the transportability and ease of use of this model is further improved by the addition of two wheels.

Main Features

The Kärcher K4's package includes a spray gun, a wand, a pressure hose and a detergent injection feature, with a more detailed description below.

  • Soap injection: Detergent is stored in a removable tank. The detergent dilution ratio is selected manually, via a dedicated dial. Detergent is automatically dispensed when the VPS wand is in low pressure mode.
  • Pressure hose: The 25 ft high-pressure hose, which is included with the device, can be stored neatly on the unit itself when idle, using a set of convenient hooks.
  • Spray gun and wand: The included classic ergonomic spray gun and its VPS wand can be easily stored in a side hook. The Vario Power Spray (VPS) wand allows you to conveniently switch from low to high pressure, and everything between, while you clean. Simply twist the end for infinitely variable pressure adjustment.

Other Features

Some of the accessories of the Kärcher K4

Some of the included accessories

  • Safety: Safety of operation is enhanced by a trigger lock mechanism (which prevents accidental operation).
  • Accessories: The Kärcher K4 comes with an owner's manual (opens in a new tab) and some basic documentation to get you quickly started. On top of that, you also get power cord, pressure hose, detergent tank, wand, DirtBlaster turbo spray wand (which is especially useful on stubborn dirt) and spray gun.

The Kärcher K4's performance versus other pressure washers

The following charts are provided to give you an idea of how the key specs of the Kärcher K4 compare to similarly priced pressure washers.

Note: Even though we couldn’t list its price on this page, our research indicates that some retailers sell this unit around $195.

  • With a maximum pressure output of 1900 PSI, the Kärcher K4 finds itself in the expected pressure range among electric units that cost between $170 and $200. As for the device with the most powerful water stream, in this price range, one of the top products is the Sun Joe SPX3550 with 2350 PSI.
  • The water flow of this washer, which reaches up to 1.5 GPM (gallons per minute) is one of the higher values found in the above-mentioned price range. If being able to rinse away debris as efficiently as possible is your priority, one of the products with the highest GPM in this price range is the Sun Joe SPX3550, with 1.8 GPM.
  • The K4, which reaches up to 2850 Cleaning Units (PSI X GPM) is one of the most efficient, in comparison to its similarly priced counterparts.

Price comparison

As you can see from this interactive chart, when compared to other electric washers between 2500 and 3000 Cleaning Units, the Karcher K4 is on the cheap side of the price range.

It can therefore be a really good buy if you're looking to acquire a budget pressure washer.

The bottom line

STRENGTHS:
  • Inexpensive
  • Induction motor
  • Portable
  • Detergent dilution mechanism
  • High GPM for the price
  • High CU for the price
AVERAGE SPECS:
  • Decent PSI for the price
WEAKNESSES:
  • The Kärcher K4 doesn't have any notably low specs.

Do you own the Kärcher K4 and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

About Kärcher

Founded in 1935 by Alfred Kärcher, this family-owned business is headquartered in Winnenden, Germany. Credited with developing Europe's first hot water high-pressure washer in 1950, the company continues to pride itself on ingenuity and innovative thinking for new solutions in the cleaning industry. Kärcher also insists on being a socially- and ecologically-sustainable company. The popularity of the brand can be seen by the fact that the name Kärcher has in some European countries become a colloquial term used synonymously with pressure washers.

Warranty Information

The Kärcher K4 is covered under a warranty for up to 2 years. This warranty may be limited and may not cover all parts of the unit.
For more information about the warranty of Kärcher pressure washers, please consult Kärcher's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-800-537-4129.

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