Log in now or join Which? to see our full results and find out if any Karcher window vacs are good enough to earn our Best Buy recommendation. The best window vacs you can buy in 2023 1. Karcher Window Vac WV5: Best all-round window vacuum cleaner The intelligent combination of spray bottle and wiper guarantees extremely effective cleaning. The handy device then has no trouble vacuuming away the water from the window every time you use it – with no dripping dirty water and no streaks. When compared with conventional methods, manual cleaning is noticeably easier and three times faster than before. The convenient battery operation and the compact design guarantee maximum flexibility when cleaning household surfaces. Features & Benefits:

Karcher has recently upgraded the WV2 to have a 35-minute run-time. This equals the WV5, which is another reason why we recommend the WV2 for most people. The lithium-ion battery also means it doesn’t lose suction power as the charge runs out. Karcher window vacs – also known as the WV range – are amongst the top products on the market. All WV models are powerful, come with lithium batteries to prevent suction loss, and are great for streak-free windows, tiles and mirrors. 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. Let’s start with the similarities between this model and the WV2. 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. If the WV5 is the most advanced Karcher window vac, the WV2 Plus N Yellow provides the best balance between performance and affordability. It’s not the cheapest – that title goes to the WV1 – but has a 35-minute run-time, two blades and excellent window cleaning performance.

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Rechargable Battery: The rechargeable lithium-ion battery cleans up to 55 m² on a single charge - that's up to 45 windows We think the #1 model is the WV5 Plus N. It has a 35-minute 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 Plus N is a great choice – especially if you don’t need a removable battery.

Related Article: How to Use a Karcher Vacuum Cleaner to Clean Windows What Accessories Are Available? Each model also has various versions. The WV2, for example, is available in Basic, Plus, and Plus N Yellow versions. Suction power is excellent and you get oodles of extras in the box, including a smaller head and microfibre attachment. However, what pushes the Bosch behind the Karcher and Vileda in our list is its failure, reported by some users, to clean quite as well to the very edges of your windows. If you’re looking for the best window vac and don’t mind paying a bit extra to get it, then the WV5 Plus N is the one to get. It ties with the WV2 Plus N for run-time and versatility, but adds several important features for power users. 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.We think the best Karcher vac is the WV5 Plus N. It comes with all the features of the WV2 Plus, but with an edge guidance system, LED battery light indicator, removable battery and two suction heads. If you want the best for your home, go for the WV5 Plus N. Smaller Suction Blades. Some models (such as the WV5 Plus N) come with both a large and small blade, but Karcher also sells blades separately. For best results, use with Karcher cleaning agents. These are eco-friendly and bio-degradable and cut powerfully through grease, dirt, insects and the drips and streaks left by water without damaging the surface. LED charge indicator: Useful for revealing how much longer the battery will last before it needs a recharge.

We select top-selling window vacs from leading UK retailers and put them through a string of tough tests to find out which are the best. Cleaning extras: Many window vacs come with cleaning bottles, microfibre pads and even their own branded cleaning spray. While useful, these extras are unlikely to perform any better than the stuff you already have in your cleaning cupboard. There are several key differences between the WV1 and WV5 though. The WV1 only has a 25-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.

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For this reason, we recommend the WV2 Plus N for most people, as the smaller nozzle provides more versatility. And if you need a swappable battery and edge cleaning system, then the WV5 is clearly the superior vacuum. Interchangeable suction heads: Most window vacs come with a 280mm suction head as standard, but many include an additional smaller head for fiddly jobs such as leaded windows and front door panels. Pivoting suction heads can also help to get into awkward spots.