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Kärcher K4 vs K5 Premium - The Differences

Further down the page, you'll find some explanations regarding the key similarities and differences between the Kärcher K5 Premium and the Kärcher K4.

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 K5 PremiumKärcher K4
Kärcher K5 PremiumKärcher K4
  • Higher PSI
  • Hose reel
  • Higher GPM
  • Lighter
  • Onboard storage
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As the K5 Premium and the K4 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 K5 Premium and the Kärcher K4 both use an axial-type pump to put water under pressure. These 2 pumps are 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 K5 Premium compare to the Karcher K4.

  • Pressure: With a maximum reachable pressure of 2000 PSI, the Kärcher K5 Premium provides a somewhat higher force to blast off dirt and grime than the 1900 PSI of the Kärcher K4.
  • Water Flow: When operating at low pressure, the K4 can generate a slightly higher maximum volume of water than the K5 Premium. It can deliver up to 1.5 GPM (gallons per minute), whereas the K5 Premium offers a maximum water flow of 1.4 GPM. The former should thus allow you to rinse away dirt and debris with somewhat better efficiency and speed.
  • Cleaning Power: As the difference in Cleaning Units (PSI x GPM) between the Kärcher K5 Premium and the K4 (2800 and 2850 C.U., respectively) can be considered negligible, we can say that both theses devices share the same overall cleaning efficiency. Therefore, even though the K4 has a lower pressure rating, its higher water flow makes it the superior unit.

Design Comparison

  • Design: With their compact design, both units are constructed with a strong focus on portability in mind.
  • Weight: With an approximate weight of 26.5 lbs, the K4 is slightly less heavy than the K5 Premium (which weighs around 28.7 lbs).
  • Maneuverability: Both products benefit from a set of wheels, which greatly contributes to their maneuverability. Both offer a handle, which improves your grip when you wish to move them.

Feature Comparison

  • Soap Addition: Both washers allow for the addition of chemical detergent solutions to the water. Whether you choose the K5 Premium or the K4, you'll be able to store your cleaning chemicals in the unit's onboard soap tank.
  • Trigger Gun & Wand: Each of these 2 units comes with a fairly standard ergonomic trigger gun and a VPS wand.
  • Nozzles: Neither of these 2 pressure washers come with nozzles. This is due to the fact that their aforementioned wands remove the need for any.
  • 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: In contrast to the K4, which offers convenient onboard storage to keep your accessories at hand, the K5 Premium does not have such a feature. The K4 features a set of hooks to neatly store its pressure hose. However, the K5 Premium pushes the convenience further by offering a hose reel.
  • Accessories: In addition to the standard set of included accessories, both units also come with detergent tank and dirt blaster.

TL;DR

Kärcher K5 PremiumKärcher K4
Kärcher K5 PremiumKärcher K4
  • Higher PSI
  • Hose reel
  • Higher GPM
  • Lighter
  • Onboard storage
Show all offers
Show all offers
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