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Kärcher K1900 vs K4 - The Differences

Further down the page, you'll find some explanations regarding the key similarities and differences between the Kärcher K4 and the Kärcher K1900.

But before checking out explanations regarding their power, design, and features here's a table that summarizes the main pros of each of these 2 pressure washers:

Kärcher K4Kärcher K1900
Kärcher K4Kärcher K1900
  • Higher GPM
  • Higher Cleaning Units
  • More mobile by design
  • Lighter
  • Aluminum frame
  • Folding handle
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As the K4 and the K1900 are both Kärcher pressure washers, they benefit from the same level of quality and attention to detail.

Power Comparison

  • Fuel: Both units are electric pressure washers.
  • Engine & Pump: The Kärcher K4 and the Kärcher K1900 both use an axial-type pump to put water under pressure. The former's pump is manufactured by N-COR. In either case, the pump is powered by a 13-amp motor.

The following charts are provided to show you at a glance how the main specs of the Karcher K4 compare to the Karcher K1900.

  • Pressure: As the Kärcher K4 and the Kärcher K1900 share the same maximum attainable pressure of 1900 PSI, they should both allow you to blast off dirt with the same force.
  • Water Flow: When operating at low pressure, the K4 can generate a noticeably higher maximum volume of water than the K1900. It can deliver up to 1.5 GPM (gallons per minute), whereas the K1900 offers a maximum water flow of 1.3 GPM. The former should thus allow you to rinse away dirt and debris with quite better efficiency and speed.
  • Cleaning Power: With its 2850 C.U. (Cleaning Units = PSI x GPM), the Kärcher K4 offers a higher overall cleaning efficiency than the K1900 and its 2470 C.U.

Design Comparison

  • Design: It is worth noting that the Kärcher K1900 has an aluminum frame, which means that it will not rust. With its compact, portable design, the Kärcher K4 will be the better option if you consider portability, mobility, and ease of storage as important factors, as the Kärcher K1900 can be considered less mobile, with a hand truck design. It is worth noting that the Kärcher K1900 has an aluminum frame, which means that it will not rust.
  • Weight: Weighing 26.5 lbs, the K4 is far lighter than the 39.3 lbs of the K1900.
  • Maneuverability: Both products benefit from a set of wheels, which greatly contributes to their maneuverability. The K1900 has the advantage of having a folding handle, which allows it to take up less space when not in use.

Feature Comparison

  • Soap Addition: Both washers allow for the addition of chemical detergent solutions to the water. Whether you choose the K4 or the K1900, you'll be able to store your cleaning chemicals in the unit's onboard soap tank.
  • Trigger Gun & Wand: While each of these 2 units comes with a fairly standard ergonomic trigger gun, the Kärcher K4 sports a VPS wand, while the Kärcher K1900 has a classic one.
  • Nozzles: The K4 doesn't come with any nozzles (its aforementioned wand removes the need for any), but the K1900 is supplied with four (15°, 40°, soap, and a turbo nozzle).
  • Reach: Both products include a 25 ft high-pressure hose. Therefore, neither of them will, out of the box, allow for a higher freedom of movement around the unit. As both units feature a 35 ft power cord, their maximum allowable placement from an electrical outlet is the same.
  • Storage: The K4 and K1900 both offer onboard storage that allows you to neatly keep the accessories you need at hand. Both washers feature a set of hooks to help you neatly store their high pressure hoses when not in use.
  • Accessories: In addition to the usual set of included accessories, the Kärcher K4 also comes with dirt blaster and detergent tank.

TL;DR

Kärcher K4Kärcher K1900
Kärcher K4Kärcher K1900
  • Higher GPM
  • Higher Cleaning Units
  • More mobile by design
  • Lighter
  • Aluminum frame
  • Folding handle
Show all offers
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