Keep an eye on your water container and pause to empty it into the sink if it's reaching the maximum fill line. Window vac's are also often used to remove moisture from other smooth surfaces such as mirrors and tiles. We also do this wearing Cambridge Simulation Gloves – a piece of kit that helps replicate the experience of users who suffer with limited hand movement. We judge the battery life and charging time of each window vac, taking into account how many minutes of use you get per minute of charge.

Removing condensation or dirt from your windows is no easy job but the best window vac will make things a whole lot easier. With it's powerful suction this vacuum will have your windows clean and dirt free in no time at all. Leak-proof suction: Window vacs suck wastewater into their tanks, rather than dry dirt like a standard vacuum cleaner. You could spend a weekend struggling with buckets and towels, but investing in a good window vacuum allows you to do a better job in a fraction of the time.

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. Clearpay lends you a fixed amount of credit so you can pay for your purchase over 4 instalments, due every 2 weeks. We also love that you can charge it via USB using the included micro-USB charger – an increasingly convenient option for drivers. Switch on your window vac and gently slide the squeegee in a straight, vertical line down your window pane.

Weight and capacity: A kilo may not feel like much at first, but after half an hour of holding the unit at arm’s length it will start to hurt – especially when it fills up with 300ml or so of dirty water. 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. This runs down the battery faster, but it’s a clever option that we would like to see on more models.Suction is strong and efficient right across the nozzle, so you can clean and dry into the silicone seal around your windows. Convenient design touches include a stopper that lets you drain the tank without needing to remove it (although you can remove it for cleaning). Missed payments may affect your ability to use Clearpay in the future and your details may be passed onto a debt collection agency working on Clearpay's behalf. Discover our Vortx Airfrying technology today and see why over 1 million people have chosen our Airfryers.

Extra chargers and batteries: All our featured window vacs come with a standard DC mains plug and cable.LED charge indicator: Useful for revealing how much longer the battery will last before it needs a recharge. However, to avoid having to give up halfway through more extensive cleaning missions, check that you can recharge the battery quickly and conveniently. So if you’re struggling to clean and dry your skylights, conservatory roof and weirdly positioned mirrors without ending up covered in gunk, this leak-free model is the vac for you. It can only be used in a vertical position, so while it does a good job of cleaning and drying windows, mirrors and shower screens, it won’t help you with spills on worktops or grimy skylights.