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Kärcher K4 - Spec Breakdown

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
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Set an alert for the Kärcher K4 - Current lowest price: $249.19
Price History
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Price history for the Kärcher K4
Latest updates:
  • $249.19 - June 18, 2022
  • $248.99 - May 16, 2022
  • $249.99 - March 22, 2022
Data source: walmart.com
Since: March 22, 2022
  • Highest Price: $249.99 - March 22, 2022
  • Lowest Price: $248.99 - May 16, 2022

Features and Specifications

General
FuelElectric
HandlingPortable
WaterCold (104°F max.)
PSI1900
GPM1.5
Cleaning Units2850
Motor13 amp, induction
PumpN-COR Axial
Other model numbers1.603-152.0
Features
FramePlastic
Soap injectionYes
Soap tankRemovable
Soap dilutionAdjustable
NozzlesN/A
Onboard storageYes
Hose25 ft
Hose storageHooks
Misc
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. (source: Kärcher (opens in a new tab))

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
  • use of detergent and cleaning solutions

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

Power

The Kärcher K4's axial pump, powered by a 13 amp induction motor, can provide a pressure of up to 1900 PSI (approximately 32 times more than a standard garden hose) and a flow of up to 1.5 GPM (CETA-certified values). The Kärcher K4 thus has a cleaning power of 2850 Cleaning Units.

The K4 is an electric pressure washer and thus, can be easily started by an 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.

The unit can be very easily carried around, as it weighs just 26.5 lbs. Its plastic frame certainly plays a key role in this light weight. To further improve its transportability and ease of use, the unit also features a set of two wheels.

Main Features

Along with the Kärcher K4 itself, the package also includes a spray gun, a wand, a pressure hose and a detergent injection feature, which are discussed in further detail below.

  • Soap injection: Detergent storage is ensured by a removable tank. The detergent dilution ratio can be manually selected, using a dial. Detergent is automatically dispensed when the VPS wand is in low pressure mode.
  • Pressure hose: The included 25 ft high-pressure hose can be neatly stored on the unit when idle thanks to a set of convenient hooks.
  • Spray gun and wand: A side hook enables you to easily store the included classic ergonomic spray gun and its VPS wand. 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: Included with the Kärcher K4 are also the owner's manual (opens in a new tab) and some basic documentation to get you promptly started, along with several accessories, such as power cord, wand, pressure hose, spray gun, DirtBlaster turbo spray wand (which is especially useful on stubborn dirt) and detergent tank.

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.

  • The Karcher K4 and its 1900 PSI, ranks amongst electric pressure washers with a comparably low pressure output, considering the units that cost between $195 and $255. As for the device with the most powerful water stream, in this price range, one of the top products is the Sun Joe SPX3000-MAX with 2800 PSI.
  • Considering its water flow, this washer, with a GPM (gallons per minute) of 1.5 is in the average compared to other devices in its price range. If you’re after the highest rinsing efficiency, one of the units with the highest water flow in the current price range is the Greenworks GPW2200, that can deliver up to 2.3 GPM.
  • Boasting with 2850 Cleaning Units (PSI X GPM), the K4 is one of the more efficient devices in its respective price range. If you are after the highest overall cleaning power, the Pulsar PWE2019 with its 3200 Cleaning Units is one of the products that can achieve the highest cleaning efficiency in this price range.

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 average side of the price range.

Therefore, this pressure washer nicely fits in the expected budget for this kind of cleaning power.

The bottom line

STRENGTHS:
  • In the expected price range
  • Induction motor
  • Portable
  • Detergent dilution mechanism
  • High CU for the price
AVERAGE SPECS:
  • Decent GPM for the price
WEAKNESSES:
  • Low PSI for the price

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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