The water tank, which holds 150ml of dirty water, is also easily removed for emptying. Since dirty water takes some time to accumulate, you won't have the hassle of frequent emptying. However, the WV2 does have some minor disadvantages. We found that the spray bottle/cleaning head tool was a little bit fiddly to put together and on the first attempt we did not screw the trigger head on correctly and ended up with a wet floor. Most of the issues seem to be surrounding the water bottle. It has a tiny capacity which may be annoying for extended cleaning periods or if you live in a larger house. Additionally, there are no volume lines to measure out the mixture of cleaning fluid to water. We think that volume lines would be a useful feature as the instructions provided state that you should add 230ml water to the 20ml of cleaning fluid. All said and done we managed perfectly fine in our small window cleaning test and we think we could live with the small problems that we have discovered. Test no.1: Window cleaning 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.

Reviewer Mel lives in a three-bedroom house in Sussex with her husband, two teenagers, three cats, three degus, two tortoises and a hamster called Winnie. The set consists of two extending poles; one for the window vac and a separate one that has a washable cleaning head attachment. Each pole is 1.2 metres in length but can be extended to 1.9 metres. Your Karcher window cleaner can be securely mounted on the base plate and attached with the rubber strap. The battery arrives with just six minutes of power, so I first needed to set the appliance to charge. This took no longer than a few hours, and I could watch the battery indicator count up, minute-by-minute. Once it reached 100 minutes, we were ready to clean up to 300m² on one single charge. I had high hopes for the Karcher Window Vac WV 6's cleaning performance. I live in an old house with high ceilings and, therefore, have numerous tall windows to clean. We recommend that when cleaning up dirty water or other liquids, such as milk for example, then you should remove the water collection bottle from the main unit to give the bottle a good rinse out to stop it from smelling the next time you use it. The Karcher WV2 Plus Review: In summaryThe best window vacs you can buy in 2023 1. Karcher Window Vac WV5: Best all-round window vacuum cleaner

Read next: Unibond Aero 360 Compact Moisture Absorber review: an honest review of the budget-friendly dehumidifier alternative How we tested I also have a Karcher window vac. It's brilliant for clearing condensation and also for cleaning the windows.” Rated by Mumsnet user Clarice99 Our verdict Another good use for the window vac is cleaning up liquid spills from hard floor surfaces, such as laminate, tiles or hardwood flooring. For this test, we simply poured water on the laminate/tile floor surface and the window vac handled this with ease. Again the surface was left clean and streak-free but we were surprised to find that the floor was almost entirely dry to the touch.It comes with two interchangeable squeegee heads, which can be detached from the suction nozzle for cleaning after use. These heads measure in at 18cm and 28cm. Both feature the new lip technology to allow for upper-edge cleaning to the ground without interruption, to achieve a streak-free finish. After a good charge of around two hours, we used the Karcher for cleaning windows (a set of small French doors). It took us around two minutes to clean the windows which involved first spraying them with the cleaning tool then going over a couple of times with the vac. 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. Having added the cleaning concentrate to the spray bottle with 150ml of water, my first cleaning job with the Karcher Window Vac WV 6 Premium was the three- window bay in my front room.