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Gerni 7300 vs Karcher K5: Pressure Washer Showdown

Whether you’re looking to spruce up your driveway, give your car a good wash, or tackle stubborn grime on your deck, the right pressure washer can be a game-changer.

Today, we’re putting three heavy-hitters in the pressure washer market head-to-head: the Gerni 7300, the Karcher K5 Premium, and the Karcher K5 Compact.

All three models offer similar pressure and flow rates, but each has its own set of features that could make it the ideal choice for your specific needs. Plus, they all come with a 7-year warranty, giving you peace of mind for years to come.

So, let’s dive into the details to help you decide which of these pressure washers is the best fit for you.

Gerni 7300 vs Karcher K5: Quick Answer

The Gerni 7300 is best for heavy-duty tasks and durability, thanks to its aluminium pump and brushless motor.

The Karcher K5 Premium offers advanced features like Bluetooth and a water-cooled motor but comes at a higher price.

The Karcher K5 Compact is the most budget-friendly and space-saving option. All three models offer a 7-year warranty with online registration.

Gerni 7300 | Power Tools
Karcher K5 | Power Tools
Karcher K5 Compact | Power Tools

Design and Build

All three models are built with user convenience in mind but differ in size and weight, which could be a deciding factor depending on your storage space and physical ability to move the unit around.

Gerni 7300

  • Size (LxWxH) mm: 370 x 903 x 385
  • Weight: 22.1 kg
  • Hose Storage: Hose reel
  • Pump: Aluminium
  • Brushless motor: Yes
  • Water-Cooled Motor: Not specified

K5 Premium

  • Size (LxWxH) mm: 414 x 306 x 588
  • Weight: 13.92 kg
  • Hose Storage: Hose reel
  • Pump: Aluminium components
  • Brushless motor: Not specified
  • Water-Cooled Motor: Yes

K5 Compact

  • Size (LxWxH) mm: 354 x 308 x 520
  • Weight: 12 kg
  • Hose Storage: Winds around the front cover
  • Pump: Aluminium components
  • Brushless motor: Not specified
  • Water-Cooled Motor: Yes

If you have limited storage space, the K5 Compact’s smaller size could be a big plus. On the other hand, the Gerni 7300 is the heaviest, so consider this if you’ll need to move it frequently.

In terms of pump materials, aluminium is generally considered more durable and can withstand regular use and challenging conditions. This makes the Gerni 7300 a strong choice if you’re looking for a machine that will last a long time with minimal wear and tear.

Karcher’s non-aluminium pumps are made from a patented material made by Karcher called N-Cor “Non-Corrosive” (a composite material Polyamide (plastic) and glass fibre). They say N-Cor pumps are guaranteed for life to never rust or corrode.

Finally, a water-cooled motor, available on both Karcher models, can prolong the life of the unit.

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Technical Specifications

When it comes to performance, these models are closely matched, but small differences could impact your cleaning tasks.

Max Pressure

All three models offer similar pressure, which is important for dislodging tough dirt and stains.

  • Gerni 7300: 2320 PSI
  • K5 Premium: 2300 PSI
  • K5 Compact: 2300 PSI

Flow Rate

The flow rate for all three models is 8.3 L/min, which affects how quickly you can clean large areas.

Power Rating

  • Gerni 7300: 2.3 kW
  • K5 Premium: 2.1 kW
  • K5 Compact: 2.1 kW

While the pressure and flow rate are essentially the same for all models, the Gerni 7300 has a slightly higher power rating, which could offer a bit more efficiency in long cleaning sessions.

Equipment and Features

Each model has its own set of features that could make your cleaning tasks easier or more efficient.

Hose Length

  • Gerni 7300: 12m
  • K5 Premium: 10m
  • K5 Compact: 8m

A longer hose, like the one on the Gerni 7300, means you can reach further without moving the machine.

Dirt Blaster

All three models come with a dirt blaster, which is great for tackling stubborn grime.

Bluetooth Connectivity

Only the Karcher K5 Premium offers Bluetooth connectivity among the three models. This feature allows you to pair the pressure washer with a smartphone app for easier control and monitoring.

Price and Warranty

All models offer a 7-year warranty, which is excellent for peace of mind.

However, they differ in price. At the time of writing here are the RRPs:

  • Gerni 7300: $739
  • K5 Premium: $1,079
  • K5 Compact: $670

If you’re on a budget, the K5 Compact is the most affordable. However, if you’re willing to invest more for extra features, the K5 Premium could be worth the higher price tag.

Conclusion

Choosing the right pressure washer comes down to a mix of your specific needs, budget, and the features you value most. Here’s a quick recap to help you make your final decision:

  • Gerni 7300: This model stands out for its durable aluminium pump and brushless motor. It’s the heaviest but offers a longer hose and a slightly higher power rating. If you’re looking for a robust machine for heavy-duty tasks and don’t mind the extra weight, this could be the one for you. Priced at $739, it offers good value for its features.
  • Karcher K5 Premium: This model offers a blend of performance and modern conveniences like Bluetooth connectivity and a water-cooled motor. It’s not the cheapest, priced at $1,079, but if you’re looking for a high-performing machine with extra features and don’t mind the higher price tag, this is a solid choice.
  • Karcher K5 Compact: If you’re tight on space or budget, this model, priced at $670, offers a compact design without compromising on essential features. It has a water-cooled motor like the K5 Premium but lacks some of the extra features.

All three models come with a 7-year warranty, offering peace of mind no matter which you choose.

Gerni 7300 | Power Tools
Karcher K5 | Power Tools
Karcher K5 Compact | Power Tools
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Steve Kropp

Based in Melbourne, Steve's passion is vegetable gardening, and he’s been writing about it for almost 5 years. He also loves all things DIY and is always looking for a new project. When not working on his own garden projects or blogging, Steve enjoys spending time with his family, cooking meals with produce harvested from his garden, and coaching his son’s footy team.

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