No drips, no streaks
A window vacuum sucks the dirty water off the glass instead of pushing it around, which removes the streaks and the drips on the sill in one move. They are simple machines, so they separate on blade width, weight in the hand and runtime — and on whether a narrow blade is included for glazing bars, which is where a wide one is useless.
360° Comfort!Clean · vertical, horizontal or overhead · cordless
A window vacuum that works upside down — which sounds like a detail until you reach a skylight.
Best for: Shower screens, mirrors and skylights — the everyday glass rather than a whole house
≈ 60 €
20 min runtime · 100 ml tank · 0.5 kg · spray bottle included
Half a kilo in the hand and twenty minutes of battery — the cheapest way to stop leaving streaks.
Best for: Flats, shower screens and mirrors — the everyday glass rather than a whole house at once
≈ 40 €
Up to 35 windows per charge · LED battery indicator · streak-free
Bosch quotes its runtime in windows rather than minutes — which is the number you actually wanted.
Best for: Households already using Bosch home tools, and anyone who wants a runtime figure they can act on
≈ $105 / 61 €
35 min runtime · two blade widths · spray bottle with cover
Two interchangeable blades — wide for panes, narrow for glazing bars — and 35 minutes to use them.
Best for: Houses with traditional windows, glazing bars and a mix of pane sizes
≈ £66 / 49 €
360° head · Click-System poles · cordless
The one that fits a pole: a rotating head on Leifheit's Click-System, for windows you cannot reach.
Best for: Conservatories, stairwell windows and anything above head height
≈ £43 / 45 €
100 min runtime · display · spray bottle with microfibre cover
A hundred minutes of battery and a display that tells you what is left — the whole-house machine.
Best for: Houses with a lot of glass, cleaned in long sessions rather than in passing
≈ 73 €
The running time decides how many windows you get through before recharging. Breaking off mid-session leaves streaks where the product dried.
On large continuous surfaces, head width reduces the number of strips and therefore the risk of a visible join.
For a daily shower screen, the most affordable model does exactly the job expected of it.
No, it sucks. Cleaning remains the job of the product and the wash; the device removes the wiping, and with it the streaks and the running water.
Yes, on any smooth, non-porous surface: mirrors, tiling, shower screens, worktops. That is even the most frequent use after windows.
Almost always a fouled or nicked rubber blade, sometimes too much product. The blade is a consumable people forget to replace.
A first pass with a conventional wash, a rinse, then the vacuuming. On a badly soiled pane, the device only smears if the wash was rushed.
No. The water sets on the blade and the device slides without recovering anything. You have to wait for the surface to get back above zero.
Vacuum from top to bottom and finish with a horizontal pass along the sill. That is a technique, not a feature of the device.
If you leave it full. Emptying and rinsing after every use, then leaving it open to dry, avoids it completely.
Allow one standard window per minute of suction; twenty minutes of runtime covers a whole flat. Removable batteries let you double that without waiting for a recharge.
A window vac is judged on running time and on weight, in an order that depends on how high you work. The rubber blade is the part that decides the result, and it is the one people forget to replace.
A figure has to be published by four machines in five to earn its column. Below that, we would be comparing empty cells.
| Model | Price | Amazon reference |
|---|---|---|
| Kärcher WV 1 Plus | 40 $ | B0CQTG8F4H |
| Leifheit Dry & Clean | 43 $ | B00WJZNH1I |
| Kärcher WV 1 Compact Care Extra+ Black | 60 $ | B0GVG5YWXS |
| Kärcher WV 2 Black Edition | 66 $ | B075F78KDV |
| Kärcher WV 6 Plus Multi Black Edition | 73 $ | B0B295615G |
| Bosch GlassVAC | 105 $ | B079GW7H9V |
Specifications: manufacturer sheets for cleaning machines and the matching Amazon product pages. Prices and availability: Keepa. Every figure in this table names its source.
Most recent revision in this category: August 16, 2026.
Prices quoted in these summaries are dated readings. The live price is shown next to each product.
