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03.29.2022autorenew
Kärcher K4 vs. K5 vs. K7 im Vergleich - Which one is right for me?
In this article, we compare the popular Kärcher K4 vs. K5 vs. K7 pressure washers.
Kärcher - The top dog in the field of high-pressure cleaners
Kärcher is known for its excellent high-pressure cleaners. For years, the family-owned company based in Winnenden, near Stuttgart, has dominated this field and has been so successful that the term "kärchern" has already been established as a fixed term for cleaning with high-pressure cleaners.Three of the most popular "kärcher" are the models [url="https://www.amazon.de/dp/B0185UN29M?tag=produck-21",name="K4",title=""], [url="https://www.amazon.de/dp/B01N5I46XF?tag=produck-21",name="K5",title=""] and [url="https://www.amazon.de/dp/B01MZ2GQQ7?tag=produck-21",name="K7",title=""], which we contrast and compare in this article, hoping to help you decide on one of the models.
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Comparison table: Kärcher K4 vs. K5
| Feature | K4 | K5 |
|---|---|---|
| Adapter | 3/4 " | 3/4 " |
| Pressure indicator | yes | yes |
| Flow rate | 420 l/h | 500 l/h |
| Suitable for | driveways, cars | off-road vehicles, walls, stairs |
| Weight | 11,8 kg | 17,7 kg |
| Size of the application area | 30 m²/h | 40 m²/h |
| Manufacturer | Alfred Kärcher SE & Co. KG | Alfred Kärcher SE & Co. KG |
| Length (cable) | 6 m | 8 m |
| Lance | yes | yes |
| Power (in watts) | 1.800 | 2.100 |
| Dimensions (length x width x height) | 30.5 cm x 39.7 cm x 58.4 cm | 30.5 cm x 39.7 cm x 58.4 cm |
| Cleaning agent | Stone cleaner (3-in-1) | Stone cleaner (3-in-1) |
| Water pressure (maximum) | 130 bar | 145 bar |
| Water pressure (minimum) | 20 bar | 20 bar |
| Water suction | yes | yes |
| Inlet temperature (maximum) | 40 °C | 40 °C |
Comparison table: Kärcher K5 vs. K7
| Feature | K5 | K7 |
|---|---|---|
| Adapter | 3/4 " | 3/4 " |
| Pressure indicator | yes | yes |
| Delivery rate | 500 l/h | 600 l/h |
| Suitable for | off-road vehicles, walls, stairs | facades, swimming pools, mobile homes |
| Weight | 17,7 kg | 19,1 kg |
| Size of the application area | 40 m²/h | 60 m²/h |
| Manufacturer | Alfred Kärcher SE & Co. KG | Alfred Kärcher SE & Co. KG |
| Length (cable) | 8 m | 10 m |
| Lance | yes | yes |
| Power (in watts) | 2.100 | 3.000 |
| Dimensions (length x width x height) | 30.5 cm x 39.7 cm x 58.4 cm | 33.0 cm x 46.3 cm x 66.7 cm |
| Cleaning agent | Stone cleaner (3-in-1) | Stone cleaner (3-in-1) |
| Water pressure (maximum) | 145 bar | 180 bar |
| Water pressure (minimum) | 20 bar | 20 bar |
| Water suction | yes | yes |
| Inlet temperature (maximum) | 40 °C | 60 °C |
Optics
Kärcher K4:[url="https://www.amazon.de/dp/B0185UN29M?tag=produck-21",name="
",title=""]Kärcher K5:
[url="https://www.amazon.de/dp/B01N5I46XF?tag=produck-21",name="
",title=""]Kärcher K7:
[url="https://www.amazon.de/dp/B01MZ2GQQ7?tag=produck-21",name="
",title=""]Water pressure
In the segment of high-pressure cleaners, water pressure is understood as the pressure with which the water flows out of the respective Kärcher. The higher this is, the more intensive the corresponding cleaning. Because larger devices can usually build up more pressure, the cleaning process with them is also noticeably more effective. A difference that can also be observed with the Kärcher K4 vs. K5 or Kärcher K5 vs. K7.As far as the lowest possible pressure is concerned, on the other hand, no differences exist. People who mainly want to work with low pressures will consequently get their money′s worth equally with Kärcher K4 vs. K5 or Kärcher K5 vs. K7 regarding each model. Some objects can be damaged by too high water pressure during cleaning. This can, for example, affect the paint on a vehicle (especially older models with existing paint damage). The physical unit bar is used to quantify the pressure.
Kärcher K4 vs. K5
The minimum pressure for both the K4 and the K5 is 20 bar. On the other hand, the maximum water pressure for the K4, at 130 bar, is 15 bar lower than for the K5, at 145 bar. In percentage terms, this means that the K4 is about 10% less powerful and the K5 about 12% more powerful in this respect.Kärcher K5 vs. K7
The minimum pressure for both the K5 and the K7 is 20 bar. On the other hand, the maximum water pressure of 145 bar for the K5 is 35 bar lower than that of 180 bar for the K7. Expressed as a percentage, this means that the K5 is about 19% less powerful and the K7 about 24% more powerful in this respect.Conveying capacity
This is the amount of water that flows out of the unit within a certain time. This is indicated in liters per hour. Kärcher K4 vs. K5 and Kärcher K5 vs. K7 also differ in this respect.Kärcher K4 vs. K5
The K4 can pump 420 liters of water per hour, the K5 500 liters. Consequently, the difference is 80 liters. Expressed as a percentage, the K4 pumps 16% less water and the K5 approximately 19% more.Kärcher K5 vs. K7
The K5 can pump 500 liters of water per hour, the K7 600 liters. Consequently, the difference is 100 liters. Expressed as a percentage, the K5 delivers about 17% less water and the K7 20% more.Size of the application area
Basically, the larger the model, the larger the area that can be cleaned within a certain period of time. The respective area is specified in square meters and the time in hours. The decisive question is therefore: How many square meters of surface can the corresponding device clean during one hour? With regard to the comparison Kärcher K4 vs. K5 or Kärcher K5 vs. K7, differences also become clear with regard to this characteristic. In order for potential customers to be able to answer the question of which model is the right one given their individual needs, they should also consider the size of the surfaces that need to be cleaned. If these are rather small, a rather small device that is also less expensive is often sufficient.Kärcher K4 vs. K5
While the K4 can only clean 30 m² in one hour, the K5 can clean 40 m². This difference of 10 m2 means that the K4 cleans 25% less area in 60 minutes, while the K5 cleans about 33% more.Kärcher K5 vs. K7
While the K5 can clean only 40 m² in one hour, the K7 cleans 60 m². This difference of 20 m² means that the K5 cleans about 33% less area in 60 minutes and the K7 50% more.Dimensions
More voluminous devices are somewhat more cumbersome to use, but often provide a noticeably higher performance. This is not the case with the Kärcher K4 vs. K5, but it is the case with the Kärcher K5 vs. K7.Kärcher K4 vs. K5
The length of both devices is 30.5 cm, the width 39.7 cm and the height 58.4 cm.Kärcher K5 vs. K7
While the K5 model is 30.5 cm long, 39.7 cm wide and 58.4 cm high, the dimensions of the K7 are 33.0 cm x 46.3 cm x 66.7 cm. The differences are therefore 2.5 cm in length, 6.6 cm in width and 8.3 cm in height.Weight
The weight also has an effect, the higher it is, to the detriment of handling. However, it is always true for Kärcher K4 vs. K5 or Kärcher K5 vs. K7 that with stronger performance, the respective weight also increases.Kärcher K4 vs. K5
Although in terms of these two models, the dimensions are the same, but they differ in terms of weight. K4 weighs 11.8 kg, whereas K5 weighs 17.7 kg. Consequently, the difference is 5.9 kg. This makes K4 about 33% lighter and K5 50% heavier.Kärcher K5 vs. K7
In line with the different dimensions, this also results in different weights. K5 weighs 17.7 kg, while K7 weighs 19.1 kg. Consequently, the difference is 1.4 kg. This makes K5 about 7% lighter and K7 about 8% heavier.Thus, while the dimensions of the K4 vs. K5 are the same but the weight differences are considerable, the K5 vs. K7 show different dimensions but only relatively minor differences in terms of weights.
Possible applications
Potential customers should always carefully consider which objects they intend to clean with their product. When comparing the Kärcher K4 vs. K5 or Kärcher K5 vs. K7, various differences come to light with regard to the question for which applications the respective device is suitable.Kärcher K4 vs. K5
| Possible applications | K4 | K5 |
|---|---|---|
| Bicycles | yes | yes |
| Facades | no | no |
| Garden furniture | yes | yes |
| Garden and stone walls | no | yes |
| Garden stairs and larger garden paths | no | yes |
| Garden tools | yes | yes |
| Small car | yes | yes |
| Medium cars and station wagons | no | yes |
| Motorcycles | yes | yes |
| Swimming pools and large terraces | no | no |
| Motorhomes and off-road vehicles | no | no |
| Fences, garden paths and flagstones | yes | yes |
Kärcher K5 vs. K7
| Possible applications | K5 | K7 |
|---|---|---|
| Bicycles | yes | yes |
| Facades | no | yes |
| Garden furniture | yes | yes |
| Garden and stone walls | yes | yes |
| Garden stairs and larger garden paths | yes | yes |
| Garden tools | yes | yes |
| Small cars | yes | yes |
| Medium cars and station wagons | yes | yes |
| Motorcycles | yes | yes |
| Swimming pools and large terraces | no | yes |
| Motorhomes and off-road vehicles | no | yes |
| Fences, garden paths and flagstones | yes | yes |
Accessories
You can buy all three models both without and with different accessories. Whether and if so, which items are additionally selected, naturally also affects the price. The prices listed below are as of July 2021 and exclusively refer to new products.Kärcher K4 vs. K5
| Accessories | Price (K4) | Price (K5) |
|---|---|---|
| Accessories | Price (K4) | Price (K5) |
| without | 195,99 EUR | 261,26 EUR |
| Stone cleaner (3-in-1) | 199,99 EUR | 299,99 EUR |
| Hose reel | 229,95 EUR | 367,14 EUR |
| Hose reel & stone cleaner (3-in-1) | 299,95 EUR | 390,00 EUR |
Kärcher K5 vs. K7
| Accessories | Price (K5) | Price (K7) |
|---|---|---|
| without | 261,26 EUR | 444,11 EUR |
| Stone cleaner (3-in-1) | 299,99 EUR | 619,99 EUR |
| Hose reel | 367,14 EUR | 688,19 EUR |
| Hose reel & stone cleaner (3-in-1) | 390,00 EUR | 876,09 EUR |
Cleaning agent
Kärcher K4 vs. K5 resp. Kärcher K5 vs. K7
In this respect, there are no differences between the three models. They are all powered by the stone cleaner (3-in-1).Power consumption
Kärcher K4 vs. K5
With increasing performance, the power requirement of a corresponding device also increases. For example, the K4 consumes 1,800 watts and the K5 2,100 watts. The difference is therefore 300 watts. Due to the difference in performance, the K4 requires about 14% less power and the K5 about 17% more.Kärcher K5 vs. K7
With increasing power, the power requirement of a corresponding device also increases. For example, the K5 consumes 2,100 watts and the K7 3,000 watts. The difference is therefore 900 watts. Due to the difference in performance, the K5 requires 30% less power and the K7 about 43% more.Cable length
Kärcher K4 vs. K5 resp. Kärcher K5 vs. K7
With regard to the three models considered here, the length of the cable increases by two meters from device to device. Accordingly, it is six meters for the K4, eight meters for the K5 and ten meters for the K7.Price-performance ratio
Kärcher K4 vs. K5
| Model | K4 | K5 |
|---|---|---|
| Price | 195,99 EUR | 261,26 EUR |
| Price difference | -25% | 33% |
Kärcher K5 vs. K7
| Model | K5 | K7 |
|---|---|---|
| Price | 261,26 EUR | 444,11 EUR |
| Price difference | -41% | 70% |
Conclusion for comparison Kärcher K4 vs. K5 vs. K7
The performance of the respective model also increases with the price. However, the price differences are relatively high. Potential customers should therefore consider in advance exactly what requirements a corresponding device has to meet in their case. If these are comparatively low, a rather inexpensive model is often completely sufficient. The same also applies to accessories.Due to the fact that three different models from three different price ranges were considered here, the selection is relatively diverse and manages to meet quite a few of the customers′ diverse requirements.[asin="B0185UN29M",type="standard"][asin="B01N5I46XF",type="standard"][asin="B01MZ2GQQ7",type="standard"]