Bosch Cordless Window Vac GlassVAC (for windows, tiles, mirrors and shower, running time: approx. 35 windows, in carton packaging)
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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.
Some models, such as the AEG Window Vaccan achieve around 60 mins of running time from one charge. This can be useful if you have several cleaning jobs to be doing in one day, although normally 30 minutes is more than enough for the majority of tasks. Among its many included accessories are a smaller 170mm suction head for hard-to-reach areas and a microfibre attachment to spread detergent on your windows. There’s a built-in LED battery indicator and you can buy additional batteries so that you’ve always got a fully charged one ready to go. It has an integrated lithium-ion battery which is simple to charge using the included micro-USB charger. The battery lasts for approximately 30 minutes of continuous use, and has a battery indicator to warn when it needs to be plugged in.
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In terms of general performance, one charge will last for approximately 35 minutes, which is generally enough time to clean all of the inside windows of a standard house. This window vacuum also seems to approach the windows with relative vigour; it’s powerful enough for the 100 ml water tank to visibly contain liquid after cleaning one pane of condensation. Whilst the suction and power is relatively good, the suction power doesn’t reach fully to the edges of the larger vacuum blade. For this reason, a large overlap is necessary when using the window vacuum, otherwise streaks can be created by the water residue.
With a run time of up to 60 minutes, this is one of the best cordless window vacuums featured here in terms of battery life. It’s powerful enough to remove condensation, and clean windows, as well as clear spills on hard-top surfaces.It has a good battery life and won’t often need charging, especially if only being used for a few windows at a time. When it is time to charge, the WindoMatic window vacuum simply hooks up to a mains charger. If you’re not interested in the manual cleaning part, you can buy the product as the Bosch GlassVac Solo, which gets you the window vacuum only with the large suction head. Using the vacuum effectively takes a bit of trial and error to begin with, but it is possible to avoid creating streaks. The appearance of streaks is greatly reduced by starting with a very wet window and overlapping by 10 cm on each stroke, as well as using more detergent than you might expect.