Karcher Window Vac Reviews & Comparison – Which is the Best Model?

Written by Tim Ribonee | 0 Comments| Last Updated: November 13, 2019

Not sure which Karcher window vac to buy? In this article, we review the company’s WV range of home window vacs to help you make the right choice.

A guide to the top Karcher window vacs

Cleaning windows can be a frustrating job – especially without the right tools. Drying a glass window pane with a cloth is likely to leave smears, but letting the window dry naturally causes streaks.

That’s why window vacs are so useful. These handheld appliances suck surfaces dry, so you don’t get ugly smears after cleaning. They make it easy to get crystal clear windows without paying a professional cleaner, and can also be useful for removing condensation.

While the regular vacuum cleaner market has plenty of competing brands, Karcher dominates window vacs in the Australia. Their WV series is powerful, lightweight and easy to use – not to mention available for great prices. In fact, the company’s models currently occupy both #1 and #2 positions on our list of the best window vacs.

Which is the best Karcher window vacuum though? And which provides the greatest value for money? Let’s find out by reviewing the WV1, WV2 Plus, WV5 Premium and WV Anniversary edition.

Karcher Window Vac Model Comparison & Review – Which is the Best?

The four models in the WV range – WV1, WV2 Plus, WV5 Premium and WV Anniversary Edition – share many of the same features.

They all have a 100ml dirty water tank, quick-emptying system, rechargeable lithium-ion battery and relatively powerful suction. All WV vacs also have a similar design, with a built-in handle and curved neck, and are built to clean everything from windows to shower screens.

There are some important differences between the various models though. The run-time, working nozzle width and weight vary depending on which you buy. There’s also a reasonable difference in price between the cheapest and most expensive options.

So, while all WV models provide excellent performance and value for money, make sure you read each review to choose the right model for your requirements.

If You’re in a Hurry…

We’ve reviewed each model below, but here are our top picks depending on your requirements:

  • We think the best Karcher vac is the WV5 Premium. It comes with all the features of the Anniversary Edition, but with a 3-step LED charge display, removable battery and adjustable edge cleaning system. If you want the best for your home, go for the WV5.
  • If you need maximum run-time, the WV5 Premium is also the top choice. It has a long 35-minute life, along with a removable battery. The Anniversary Edition has the same run-time but lacks some of the advanced features found on the WV5.
  • When it comes to value for money, the WV2 Plus is probably the best option. It’s cheaper than the WV5, yet still provides a 25-minute run-time and excellent performance.
  • If you’re on a tight budget, the WV1 is the cheapest Karcher window vacuum cleaner. It has the same basic design, so it’s great for cleaning windows and tiles – although the 20-minute run-time is considerably shorter than the WV5.

1. Karcher WV Anniversary Edition

WV Anniversary EditionThe newest Karcher window vacuum is the WV Anniversary Edition. Released for the 10th anniversary of the company’s original window vac, it has a 35-minute run-time, lithium-ion battery and a slick black design.

Like all Karcher home window vacs, the Anniversary Edition provides excellent cleaning performance. Glass windows, mirrors, tiles and worktops are left clear and streak-free, and most water is sucked up with a single pass. There’s also an exchangeable head with small or large options, which isn’t included with the WV1 or WV2 Plus. This is useful for cleaning tight windows or small shower screens.

Is it really an upgrade to the WV5 though? Or is it just a different colour?

While the WV5 and Anniversary Edition are similar, there are a few key differences. The Anniversary Edition is slightly lighter than the WV5, which may be an advantage when cleaning lots of windows, although the difference is minimal. More importantly, the Anniversary Edition doesn’t have a removable battery or edge cleaning guidance.

This means the WV5 is clearly the superior vacuum – especially if you need the option of swapping the battery for double the run-time. We also think that the WV Anniversary Edition is less convenient to empty than the WV1.

If you just want a longer run-time than the WV2 Plus, or need the option of cleaning with the smaller 170mm blade, the Anniversary Edition is an excellent choice though (especially as it’s often on sale for less than the WV5).


  • Run-Time / Charging Time: 35 minutes / 2 hours approx.
  • Weight: 0.65kg
  • Dirt Water Capacity: 100ml
  • Removable Battery: No

Key Features:

  • Both 280mm and 170mm blades for greater versatility
  • Stylish black window cleaner vac
  • Includes spray bottle kit

View Price

2. Karcher WV5 Premium (Top Pick)

Karcher WV5 PremiumThe most feature-packed WV vacuum cleaner is the WV5 Premium. It comes with all the features of the Anniversary Edition, including the two blade sizes, 35-minute run-time and powerful suction, but adds some useful extras.

One of the most important additions is the removable battery. The WV5 is the only WV window vac to include this feature, which allows you to swap the battery and continue cleaning (you’ll need to buy another battery though). The edge guidance function, which is effectively an adjustable roller so you can get right up to the edge of frames, is another welcome addition.

The WV5 also has a more advanced charge indicator. Instead of a simple LED, there’s a 3-step charge level on the handle so you can quickly estimate how much run-time is remaining. It also does a brilliant job of cleaning windows.

If you’re looking for the best window vac, the WV5 Premium is the one to get. It ties with the Anniversary Edition for run-time and versatility, but adds several important features that make it worth the small extra cost.


  • Run-Time / Charging Time: 35 minutes / 2 hours approx.
  • Weight: 0.65kg
  • Dirt Water Capacity: 100ml
  • Removable Battery: Yes

Key Features:

  • Removable lithium-ion battery
  • Edge guidance function & 2 blade sizes
  • 3-stage charge indicator

View Price

3. Karcher WV2 Plus (Great Value)

If the WV5 is the most advanced Karcher window vac, the WV2 Plus provides a balance between performance and affordability. It’s not the cheapest – that title goes to the WV1 – but has a 25-minute run-time and excellent window cleaning performance.

As with all the WV range, the WV2 Plus is great for cleaning windows, tiles, mirrors and other surfaces around the home. It’s relatively lightweight, has an LED charge display, includes a spray bottle set and is simple to empty. The lithium-ion battery also means it doesn’t lose suction power as the charge runs out.

We’re big fans of the WV2 Plus. For most people, it provides the best value of any models in the WV range. If you don’t need the smaller nozzle or 35-minute run-time, it provides better value than the WV5.

Note: There is also a WV2 Premium version that we haven’t included in these reviews. The main difference is the Premium includes the smaller 170mm blade. If you don’t need this blade, go for the cheaper WV2 Plus.


  • Run-Time / Charging Time: 25 minutes / 2 hours approx.
  • Weight: 0.7kg
  • Dirt Water Capacity: 100ml
  • Removable Battery: No

Key Features:

  • Great balance between price and performance
  • LED battery display
  • Lightweight design

View Price

4. Karcher WV1 (Cheapest Karcher Window Vac)

WV1The cheapest WV vacuum cleaner is the WV1. While it doesn’t include many of the features found on the WV5, it provides great value for money and is perfect for smaller homes.

Let’s start with the similarities between this model and the others. It features the same basic design, 100ml dirty water tank and LED charge display. The 250mm cleaning head does an excellent job of leaving streak-free windows and other surfaces, while the lithium battery doesn’t lose suction as it gets low on charge.

There are several key differences between the WV1 and WV5 though. The WV1 only has a 20-minute run-time and no option to swap the battery, so it may not be the right choice for cleaning lots of windows at the same time. It also only has a single 250mm cleaning head – the smaller 170mm head isn’t included.

Even so, the WV1 is an excellent window vac that provides great value for money. If you don’t need the advanced features or longer battery life of the WV2 and Wv5, the WV1 won’t let you down.


  • Run-Time / Charging Time: 20 minutes / 1.5 hours approx.
  • Weight: 0.6kg
  • Dirt Water Capacity: 100ml
  • Removable Battery: No

Key Features:

  • The cheapest WV model
  • Still provides excellent cleaning performance
  • Slightly lighter than the others on this list

View Price

Frequently Asked Questions

How Do They Work?

A common complaint about Karcher vacuum cleaners is that their instruction manuals don’t clearly explain how to use a window vac. Perhaps Karcher assumes everyone knows how to use one, but this doesn’t help if you’re buying your first window vac and would like detailed instructions.

If you’re not sure how they work, here’s a quick review video showing one in action. The process is similar whether you’re cleaning windows, bathroom tiles, car windows or mirrors:

What Accessories Are Available?

Karcher sells a number of accessories to make cleaning surfaces in your home easier. Most of these fit all models of the WV range, although check before you buy. Some of the most useful accessories include:

  • Extension Poles. These attach to the body of the window vac so you can clean taller windows without a ladder. If you have skylights or large windows, an extension pole is a useful accessory to buy.
  • Smaller Suction Blades. The WV5 comes with both a large and small blade, but Karcher also sells blades separately.
  • Holster Belt. This bag holds your window vac while you’re using the spray bottle or cleaning manually.

You can also buy replacement parts for the WV series. These include charger packs, rubber lips, spray bottle sets and microfibre cloths.

Where Should I Buy One?

The WV window vac range is available on most major online stores, including Amazon, Argos and Tesco. If you want to find the cheapest deals, make sure you shop around. You may also be able to find second-hand or used models on sites such as eBay.


Karcher window vacs – also known as the WV range – are amongst the top products on the market. All WV models are powerful, come with lithiumbatteries to prevent suction loss, and are great for streak-free windows, tiles and mirrors.

We think the #1 model is the WV5 Premium. It has the longest run-time, along with several other useful features that aren’t included on cheaper models. If you’re looking for the best value, however, then the WV2 is a great choice if you’re happy with a 25-minute run-time.

Do you have any questions about choosing a Karcher window vac? Or do you have feedback about one of the models? Let us know in the comments section below.

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