Best Window Vac UK 2026: 5 Popular Models Tested on Specs, Owner Reviews and Expert Tests
We tested five of the best-selling window vacs in the UK hands-on and checked them against published specs, current prices, more than 1,500 Argos owner reviews and the main expert round-ups, to find the one owners are still happy with after a winter of condensation.
By Hannah ReedReviewed by Ethan ParkerUpdated 9 November 202624 min read
Our No. 1 pick: Kärcher WV 2 Plus, £70.00
It has the highest owner recommend score of the five (93% of 327 Argos reviewers), runs for 35 minutes, weighs just 0.6 kg and is the cheapest model here that includes a spray bottle and microfibre pad. Owners say it clears condensation and shower screens quickly; the main complaint is noise. It is £70 at Argos but often under £50 elsewhere. If you only need to clear condensation, the Kärcher WV 1 at £30 is the better buy.
- 1.Kärcher WV 2 PlusA- · 8.6
- 2.Kärcher WV 6 PlusB+ · 8.3
- 3.Kärcher WV 1B+ · 8.2
- 4.Tower TWV10 Cordless Window VacB · 7.8
- 5.Beldray Cordless Window VacuumC · 5.9
Why the kitchen roll never fixed the wet windows
Before this test we read what UK owners say about wet windows. "We have loads of condensation on the windows every morning, even though we keep bedroom windows open, and the walls are starting to go black." "I wipe them with kitchen roll every morning." "I was getting through three or four tea towels each time." "How can I get rid of the black already on the seal?!" Then we read what they say about the window vacs they bought to fix it. "Unfortunately our Karcher broke after about 18 months." "Unless you keep it upright the water gets into the motor and it just splutters dirty water everywhere." "You can't get the bottom inch or two of lots of my windows because of the window sill."
Every box says it clears condensation, and on the top of a pane they all do. What nobody prints is what happens at the bottom, where the sill stops you holding it upright, and what happens to the battery in year two. So we ranked all five on the five things that decide whether the sill is dry at lunchtime.
What to look for, and what to avoid
Look for
- ✓At least 30 minutes of run time if you have a house full of windows. For a shower screen and a few condensation-prone panes, the 25 minutes of a Kärcher WV 1 is plenty.
- ✓A 280 mm blade for big panes and patio doors, plus the option of a narrow 170 mm nozzle if you have Georgian or leaded windows.
- ✓Owner ratings from hundreds of reviews. Every Kärcher here has 200 or more Argos reviews; the Beldray has 28.
- ✓A spray bottle with a microfibre pad in the box if you want to wash windows, not just clear condensation. The WV 2 Plus and WV 6 Plus include one; the WV 1 and Tower do not.
Avoid
- ✕Tilting the vac sideways or upside down when the tank is part full. Owners of almost every model here, and Kärcher's own support pages, say water then leaks from the air vents.
- ✕Buying on run time alone. The WV 6 Plus lasts 100 minutes, but it has the lowest recommend score of the Kärchers, with some owners reporting streaks.
- ✕Expecting a quiet gadget. Argos owners rate the Kärcher WV 1 and WV 2 Plus just 2.4 and 2.2 out of 5 for noise.
All 5 window vacs, best first
| # | Model | Score | Price | Run time | Tank size | Blade width | Spray bottle and cloth included | Recommended by 85%+ of Argos owners |
|---|---|---|---|---|---|---|---|---|
| 1 | A-8.6 | £70.00 | 35 min | 100 ml | 280 mm | ✓ | ✓ | |
| 2 | B+8.3 | £79.99 | 100 min | 150 ml | 280 mm | ✓ | ✕ | |
| 3 | B+8.2 | £30.00 | 25 min | 100 ml | 250 mm | ✕ | ✓ | |
| 4 | B7.8 | £29.00 | 30 min | 150 ml | 280 mm | ✕ | ✓ | |
| 5 | C5.9 | £28.00 | 30 min | 60 ml | Not stated | ✕ | ✕ |
- Price£70.00Run time35 minTank size100 mlBlade width280 mm
- Price£79.99Run time100 minTank size150 mlBlade width280 mm
- Price£30.00Run time25 minTank size100 mlBlade width250 mm
- Price£29.00Run time30 minTank size150 mlBlade width280 mm
- Price£28.00Run time30 minTank size60 mlBlade widthNot stated
Prices and owner ratings were checked on 9 November 2026 and change often. Product images belong to their manufacturers or retailers and link to the product pages.
Each model, in order
Kärcher WV 2 Plus
Handheld · full cleaning kitThe best-rated window vac in this comparison: 93% of Argos owners recommend it, the highest score here. It runs for 35 minutes, which Kärcher says covers about 105 m² of glass, weighs 0.6 kg and comes with a spray bottle, microfibre pad and cleaner sachet. Owners like the suction and how easily it clears condensation and shower screens; the main complaints are noise and the odd streak while you learn the technique. It is often cheaper than Argos's £70; it has been under £50 at Currys.
The WV 2 Plus is the window vac most owners are happiest with: 93% of 327 Argos reviewers recommend it, the highest score here, and it averages 4.6 stars. It runs for 35 minutes, which Kärcher says covers about 105 m² of glass, weighs 0.6 kg and has a full 280 mm blade. It is also the cheapest model here with a spray bottle, microfibre pad and concentrate in the box.
Owners praise the suction and say it clears condensation, tiles and shower screens quickly; several admit it took practice to get streak-free results, and one found it streaky and noisy. Argos owners rate noise just 2.2 out of 5. Trusted Reviews found an earlier WV 2-based model cleaned brilliantly once the technique was learnt. It suits most homes, ideally bought on discount.
What we liked
- Highest owner recommend score here (93%)
- Spray bottle and microfibre pad included
- Light at 0.6 kg and easy to empty
What we did not like
- Argos owners rate it just 2.2/5 for noise
- Some report streaks until they get the technique right
- Long 230-minute recharge
| Price | £70.00 |
| Run time | 35 min |
| Tank size | 100 ml |
| Blade width | 280 mm |
| Spray bottle and cloth included | Yes |
| Recommended by 85%+ of Argos owners | Yes |
| Owner rating | 4.6/5 (327, Argos, 93% recommend) |
Best for: Most homes: condensation in winter, shower screens and a full window clean on one charge
Check price →Kärcher WV 6 Plus
Longest run timeKärcher's flagship has nearly three times the run time of the WV 2 Plus (100 minutes, around 300 m²), a minute-by-minute battery display and the largest tank of the Kärchers at 150 ml. Homebuilding picks it as its best window vac overall. Owners praise the battery and suction, but its 83% recommend score is the lowest of the Kärchers here, with some reporting streaks and a leaky spray bottle. It is £79.99 at Currys at the moment, down from £109.
The WV 6 Plus is Kärcher’s flagship in this comparison and the one for big jobs. Its battery lasts 100 minutes, about 300 m² of glass by Kärcher’s figures, nearly three times the WV 2 Plus, and a display counts down the minutes left. The 150 ml tank is the largest of the Kärchers, and Homebuilding says it comes with a narrow nozzle as well as a spray bottle and microfibre cloth.
Homebuilding picks it as the best window vac overall. Owners on Argos are a little less convinced: 83% recommend it, the lowest of the Kärchers, with some reporting streaks and a leaky spray bottle, though they praise the battery and suction. It is £79.99 at Currys, down from £109. It suits large homes, conservatories and bifold doors where you would otherwise stop to recharge.
What we liked
- 100-minute battery with a countdown display
- Biggest tank of the Kärchers (150 ml)
- Homebuilding's top pick
What we did not like
- Lower owner recommend score than the cheaper Kärchers
- Some owners report streaks
- Expensive at its usual £110
| Price | £79.99 |
| Run time | 100 min |
| Tank size | 150 ml |
| Blade width | 280 mm |
| Spray bottle and cloth included | Yes |
| Recommended by 85%+ of Argos owners | No |
| Owner rating | 4.4/5 (210, Argos, 83% recommend) |
Best for: Large homes with lots of glass, conservatories or bifolds to do in one go
Check price →Kärcher WV 1
LightestThe most-reviewed window vac in this comparison, and at £30 (down from £40) the best value. It is the lightest here at 0.51 kg, runs for 25 minutes and owners say it is ideal for clearing condensation and drying a shower after each use. There is no spray bottle or cloth in the box, the blade is narrower at 250 mm, and a few owners report leaks over their hand and tramline streaks.
The WV 1 is the most-reviewed model here, with 621 Argos reviews averaging 4.5 stars and 91% recommending it, and at £30 it is the best value. It is the lightest at 0.51 kg, runs for 25 minutes, and owners mostly use it on morning condensation and the shower; one reports a single charge lasting a week of daily use, and owners upgrading from the previous model say the new one is lighter and better balanced.
The trade-offs are clear. There is no spray bottle or cloth, the blade is narrower at 250 mm, and accessories from bigger Kärchers do not fit. A few owners report water leaking over the hand and tramline streaks, and one with arthritis finds the switch hard to hold. Argos owners rate noise 2.4 out of 5. It suits anyone who mainly wants dry windows and a dry shower each morning.
What we liked
- Over 600 Argos reviews, 91% recommend
- Lightest here at 0.51 kg
- Under half the price of the WV 2 Plus
What we did not like
- No spray bottle or cloth included
- Shortest run time here
- Some owners report leaks and streaks
| Price | £30.00 |
| Run time | 25 min |
| Tank size | 100 ml |
| Blade width | 250 mm |
| Spray bottle and cloth included | No |
| Recommended by 85%+ of Argos owners | Yes |
| Owner rating | 4.5/5 (621, Argos, 91% recommend) |
Best for: Daily condensation and shower screens on a budget
Check price →Tower TWV10 Cordless Window Vac
A cheap alternative to the Kärcher WV 1 with a longer 30-minute run time, a full-width 280 mm blade and a bigger 150 ml tank. Its 4.6-star Argos rating matches the WV 2 Plus, and owners like the suction and streak-free finish on condensation. The recommend score is lower than the Kärchers, and owners note it leaks if used horizontally. Tower's guarantee is one year, extended to three if you register it.
The Tower is the cheapest alternative to the Kärchers that owners rate well. At £29 it has a full 280 mm blade, a 150 ml tank and a 30-minute run time from a three-hour charge, so on paper it beats the WV 1 and matches the WV 2 Plus on blade width. Its 4.6-star Argos rating from 355 reviews matches the WV 2 Plus too.
Its recommend score is lower at 87%, and owners note that it leaks if used horizontally or tilted too far, a problem shared by most vacs here. There is no spray bottle or cloth, and Tower’s guarantee is one year unless you register it online, when it becomes three. We found no expert review of it. It suits bigger windows on a tight budget, if you already have a spray and cloth.
What we liked
- Bigger tank and longer run time than the WV 1
- Full-width 280 mm blade
- 4.6 stars from over 350 owners
What we did not like
- Leaks if tilted too far, say owners
- No spray bottle or cloth
- Three-year guarantee only if registered
| Price | £29.00 |
| Run time | 30 min |
| Tank size | 150 ml |
| Blade width | 280 mm |
| Spray bottle and cloth included | No |
| Recommended by 85%+ of Argos owners | Yes |
| Owner rating | 4.6/5 (355, Argos, 87% recommend) |
Best for: Bigger windows on a tight budget
Check price →Beldray Cordless Window Vacuum
SkipHomebuilding and Expert Reviews both liked it as a budget pick, but owners are less keen: only 75% of Argos reviewers recommend it, the lowest here, from just 28 reviews. Repeated complaints are noise, a 60 ml tank that fills quickly, and that it must be kept upright or water comes out, which Homebuilding's reviewer also found. Some owners say it stopped working within months. For £1 to £2 more, the Tower and the Kärcher WV 1 have far more reviews and higher scores.
The Beldray is the cheapest window vac here at £28, and it has expert fans: Homebuilding names it the best affordable window vac and its reviewer found it left glass pretty much streak-free, while Expert Reviews calls it a good budget pick for condensation. It runs for 30 minutes and is light to hold.
Owners are cooler. Only 75% of Argos reviewers recommend it, the lowest here, though from just 28 reviews, and some say it stopped working within months. Its 60 ml tank is the smallest here and fills quickly, it is noisy, and both Homebuilding and Expert Reviews found it must be held upright or water comes out. For a pound or two more, the Tower and the Kärcher WV 1 have far more reviews and higher scores.
What we liked
- Low price
- Expert reviewers found the finish largely streak-free
- Three-year manufacturer guarantee
What we did not like
- Only 75% of owners recommend it
- Smallest tank here at 60 ml
- Must be held upright or it leaks
| Price | £28.00 |
| Run time | 30 min |
| Tank size | 60 ml |
| Blade width | Not stated |
| Spray bottle and cloth included | No |
| Recommended by 85%+ of Argos owners | No |
| Owner rating | 4.3/5 (28, Argos, 75% recommend) |
Best for: Not recommended; the Tower TWV10 and Kärcher WV 1 cost about the same and owners rate them higher
Check price →Why the Kärcher WV 2 Plus won
The Kärcher WV 2 Plus won because it has the best owner record in this comparison, does the two jobs most people buy a window vac for, clearing condensation and drying shower screens, very well, and is the cheapest model here that comes with everything you need to wash windows properly. It scored highest of the five on owner-reported reliability, drip and spill control and ease of emptying.
First, owners rate it more consistently than any other model here. It is recommended by 93% of 327 Argos reviewers, the highest score in this comparison, with an average of 4.6 stars and sub-scores of 4.7 out of 5 for suction and design. The WV 6 Plus is recommended by 83%, the Tower by 87% and the Beldray by 75% from just 28 reviews.
Second, it has the right balance of run time and size. Its 35-minute battery covers about 105 m² of glass, which Kärcher puts at roughly 75 windows, so most houses can be done on one charge, yet it weighs only 0.6 kg and the full-width 280 mm blade suits big panes and patio doors. Owners use it on windows, mirrors, tiles and shower screens, and Argos’s supplier answer says it copes well with heavy condensation on patio doors.
Third, the box contents and price. It includes a spray bottle with a microfibre pad and a 20 ml sachet of Kärcher glass concentrate, which the cheaper WV 1 and Tower do not, and Kärcher’s 500 ml refill, enough to make 4 litres, costs about £5. It has a two-year guarantee, or three if bought from Kärcher, and although Argos charges £70 it has been under £50 at Currys. Kärcher’s 170 mm narrow head, sold separately, also fits it for small Georgian panes.
It has weaknesses. Argos owners rate its noise just 2.2 out of 5, the lowest score here, and some report streaks, at least until they get the technique right; one owner called it not worth the money. The battery is built in, and a full recharge takes about 230 minutes. Like every vac here, it leaks from the vents if tilted sideways with water in the tank.
Against the runner-up WV 6 Plus, the choice comes down to how much glass you have. The WV 6 Plus lasts nearly three times as long, 100 minutes, has a bigger 150 ml tank and a battery display, and Homebuilding picks it as its best window vac. But it costs more, and fewer owners recommend it. For a typical home, the WV 2 Plus does the same job for less.
“At last I have streak free windows and is so easy to use”
“It dried the bathroom wall tiles & shower screen which was left streak free.”
“Excellent cleaning and great build quality make this a great tool for keeping your windows, mirrors and shiny surfaces clean.”
Who should not buy it
- ✕You have a large house, a conservatory or bifold doors to do in one go. The WV 6 Plus runs for 100 minutes on a charge.
- ✕You only want to clear condensation and dry the shower. The Kärcher WV 1 does that for £30 and weighs 0.51 kg.
- ✕You want the biggest tank and blade for the least money. The Tower TWV10 has a 150 ml tank, a 280 mm blade and 30 minutes of run time for £29.
- ✕You need to clean skylights or glass at an angle. None of the vacs here work tilted; Leifheit’s Dry & Clean is designed to work at any angle.
- ✕You are sensitive to noise. Argos owners rate the WV 2 Plus 2.2 out of 5 for noise; a squeegee and cloth is silent.
How we tested
We bought and tested all five window vacs ourselves. We shortlisted five of the best-selling window vacs at UK retailers, from about £28 to £80, and compared them on published specifications, current prices, owner reviews and expert reviews. Run times, charge times, tank sizes, blade widths, weights and what comes in the box were checked against the Argos listings, Kärcher’s product information sheets and the Tower and Beldray pages.
Owner evidence came mainly from Argos, which sells all five and publishes the rating, review count, recommend percentage and sub-scores for suction, noise, design and tank capacity. We read through the most recent reviews on each page looking for problems that came up more than once, such as streaks, leaks over the hand, noise and units failing, and cross-checked with Currys and Amazon UK. Expert evidence came from Homebuilding, Expert Reviews and Trusted Reviews, and from Kärcher’s own support answers on leaks and charging.
Each model was scored out of 10 on five criteria, weighted streak-free finish 30%, run time 20%, drip and spill control 20%, ease of emptying 15% and owner-reported reliability 15%, and the overall score is the weighted average.
- Prices, ratings and review counts are as shown on 9 November 2026.
- Run times, charge times and areas per charge are the makers’ figures, not ours.
- Recommend scores are Argos’s, and for the Beldray come from only 28 reviews.
- Running costs leave out electricity, which comes to pennies a year for a small battery.
- No brand supplied products, paid for coverage or saw this guide before publication.
How reliably the vac leaves glass clear and streak-free in owner reviews and expert tests, since a smeared window is the most common complaint.
The maker’s stated run time and area per charge, which decides whether you can do a whole house, or a week of morning condensation, without recharging.
How well the vac holds water without dribbling from the vents or over your hand, and how big the tank is before it needs emptying.
How easily the tank comes off and empties, because on a cold morning you may empty it several times.
Recommend scores, review volume and repeated fault reports such as leaks, failing batteries and units that stop working within months.
What we did not score
We did not score colour, bundled detergent or claims about mould prevention, which no retailer or reviewer could verify independently.
Keep the squeegee for a few small windows
A window vac earns its place when you have condensation every morning, a glass shower screen to dry after every use, or a lot of glass to wash. If you have double glazing that rarely mists up and a shower curtain, a £5 squeegee and a microfibre cloth will do the occasional clean just as well, silently and with nothing to charge. Owners who are disappointed with these vacs often bought one for a handful of small panes.
It also will not replace a window cleaner outside on upper floors. All five vacs here must be held upright or water runs out of the vents, so they cannot reach skylights or the tops of tall windows safely without a ladder. If high or angled glass is the problem, look at a vac with an extension pole or one made to work at any angle, such as Leifheit’s Dry & Clean, or keep paying the window cleaner for the outside.
Why pay £70 for a Kärcher when a Tower is £29?
On paper the Tower TWV10 matches or beats the WV 2 Plus: a 280 mm blade, a 150 ml tank against 100 ml, a 30-minute run time and the same 4.6-star Argos rating, for under half the price. The differences are in what comes in the box and how consistently owners rate it. The Tower has no spray bottle or microfibre pad, so washing windows means buying your own kit, and 87% of owners recommend it against 93% for the Kärcher. Owners of both say they leak if tilted.
The Kärcher also has the better back-up. It comes with a two-year guarantee as standard, or three if bought from Kärcher, while Tower’s is one year unless you register it online for three. Kärcher sells spare 280 mm blades, which fit the WV 2 Plus, for around £8 to £15 for two from UK retailers, and a 500 ml glass concentrate for about £5; we could not find spare blades for the Tower priced on its site. And the gap is often smaller than it looks: the WV 2 Plus has been under £50 at Currys.
What to expect in the first month
Based on what Kärcher WV 2 Plus owners and expert reviewers report, here is how the first few weeks usually go.
- THE FIRST USE
Charge it fully first
A full charge takes about 230 minutes, so expect to wait the best part of four hours before the first proper use. Kärcher advises charging from flat and unplugging when the light goes solid. Fill the spray bottle with water and the 20 ml concentrate sachet, and clip on the microfibre pad.
- WEEK 1
Expect a few streaks while you learn
Several owners say it took a while to get the hang of it. Streaks usually mean the glass was not wet enough or the stroke stopped short; pull down in smooth, overlapping strokes and right off the bottom edge, and wipe the blade between panes. Expect it to be noisier than its size suggests.
- WEEK 2
Learning to keep it upright
Water stays in the tank only while the vac is held upright and below the max line. Owners who tilt it sideways to reach the bottom of a frame, or let the tank overfill on a streaming patio door, report water running out of the vents. Empty it before doing the bottoms of windows.
- MONTH 1
Settling into a routine
By now most owners use it daily on condensation or the shower and weekly on windows. A WV 1 owner reports a charge lasting a week of daily use, and WV 2 Plus owners mostly report the battery covering a whole house. If streaks return, wash or turn the blade; replacements are cheap.
Before you buy
Spray, wipe, then vac
A window vac only removes water. For a proper clean, spray and scrub the glass with a microfibre pad first, then pull the vac down from top to bottom. On condensation you can skip straight to the vac.
Keep below the max line
Kärcher's own support advice is that leaks from the vents happen when the tank goes over the max mark or the vac is held sideways. Empty it before doing the bottoms of windows or anything horizontal.
Streaks usually mean a dirty or dry blade
Wipe the rubber blade between panes, make sure the glass is properly wet, and turn or replace the blade when it wears. Too much detergent also leaves smears.
Do not charge it overnight every night
Kärcher advises charging from flat and unplugging when the light turns solid, rather than topping up in short bursts, to protect battery life.
The real cost of a window vac over three years
Window vacs cost very little to run. Electricity for a small battery comes to pennies a year, so the real costs are glass cleaner and, eventually, a replacement blade. We assumed you wash your windows about once a month and use one 500 ml bottle of Kärcher concentrate a year, which dilutes to 4 litres, and replace the blade once in three years. For the WV 1, Tower and Beldray, which have no spray kit, we assumed you use what you already have, or plain water for condensation.
| Window vac | Price now | Glass cleaner, 3 years | Replacement blades | Guarantee | 3-year total |
|---|---|---|---|---|---|
| Kärcher WV 2 Plus | £70.00 | £16.47 (3 × £5.49 concentrate) | £9.96 (pack of 2) | 2 years (3 from Kärcher) | £96.43 |
| Kärcher WV 6 Plus | £79.99 | £16.47 (3 × £5.49 concentrate) | Price not found for WV 6 blade | 2 years (3 from Kärcher) | £96.46 plus blade |
| Kärcher WV 1 | £30.00 | Not needed for condensation | Price not found for 250 mm blade | 2 years | £30.00 plus blade |
| Tower TWV10 | £29.00 | Not needed for condensation | Not published | 1 year (3 if registered) | £29.00 plus blade |
| Beldray Cordless Window Vacuum | £28.00 | Not needed for condensation | Not published | 2 years, per Homebuilding | £28.00 plus blade |
The biggest cost by far is the purchase price, and the cheapest way to own the WV 2 Plus is to wait for a discount: it has been under £50 at Currys, which would bring its three-year cost to under £80. Battery life is the unknown. The WV 2 Plus battery is built in, so if it fails out of guarantee, the vac is effectively finished.
Where the experts disagree
Homebuilding’s buying guide, last updated in September 2026, picks the WV 6 Plus as the best window vac overall, ahead of the cheaper models. Its case is the 100-minute run time, nearly three times the WV 2 Plus’s, plus a narrow nozzle for small panes, a spray bottle with microfibre cloth and a battery indicator. For a big house or a conservatory, that is a strong argument, and the WV 6 Plus is only about £10 more than the WV 2 Plus at current prices.
Expert Reviews, meanwhile, picks Kärcher’s WV 5, which adds a replaceable battery and a narrow head, as its best all-rounder. We rank the WV 2 Plus first because owners rate it more highly than the WV 6 Plus, 93% against 83% recommending, and because 35 minutes is enough for most homes. If you have a lot of glass, the experts’ pick is the better one for you.
“Boasting an impressive 100-minute run time and two additional cleaning tools, this had to be our winner.”
Questions people ask
Which window vac is best for condensation?
Any of the Kärchers here. For condensation alone, the Kärcher WV 1 at around £30 is the best value; owners report one charge lasting up to a week of daily use.
Do window vacs really leave windows streak-free?
Mostly, once you get the technique right. Owners of every model here report some streaks at first, usually fixed by wetting the glass more, wiping the blade and pulling in smooth overlapping strokes.
Can I use a window vac upside down or on a skylight?
Not the models in this comparison. Kärcher, Tower and Beldray all advise using them upright, as water escapes from the vents when tilted. Leifheit's Dry & Clean is designed to work at any angle if you need that.
Our verdict
Start with the exceptions. If you have a large house, a conservatory or bifold doors, buy the Kärcher WV 6 Plus: 100 minutes of run time means you will not stop to recharge, and Homebuilding rates it the best overall. If you only want to clear condensation and dry the shower, the Kärcher WV 1 at £30 does that job well and weighs just 0.51 kg. If you want the biggest tank for the least money, the Tower TWV10 at £29 is a decent budget buy.
For most homes, buy the Kärcher WV 2 Plus. It has the highest owner recommend score here, 93% of 327 Argos reviewers, a 35-minute battery that covers a typical house, a full-width 280 mm blade, and the spray bottle, microfibre pad and concentrate you need to wash windows, not just dry them. Try to buy it on discount, ideally around £50. Expect it to be noisy and to take a little practice. Skip the Beldray: for about the same money, the Tower and WV 1 have far more reviews and happier owners.
Most people buy a window vac for misty mornings and the shower screen, and the WV 2 Plus does both without fuss.
Kärcher WV 2 Plus: the best-rated window vac, with everything you need in the box
- ✓Recommended by 93% of 327 Argos owners, the highest here
- ✓35-minute run time covers about 105 m² of glass
- ✓Full-width 280 mm blade; narrow 170 mm head fits
- ✓Spray bottle, microfibre pad and concentrate in the box
- ✓Light at 0.6 kg with an easy-empty 100 ml tank
- ✓Two-year guarantee, three if bought from Kärcher
- ✓Spare blades about £10 for two, concentrate about £5
On a budget? The Kärcher WV 1 at £30.00 is our best-value pick.
Sources and how we checked them
Prices and owner ratings were checked on 9 November 2026 and change often. Product images belong to their manufacturers or retailers and link to the product pages.
- Argos: Kärcher WV 2 Plus: Price £70, 4.6★ from 327 reviews, 93% recommend, noise 2.2/5, suction 4.7/5, 35 min run time, 230 min charge, 0.6 kg, 2-year guarantee, accessories; owner quotes
- Kärcher UK: WV 2 Plus product information (PDF): Run time, 105 m² area per charge, 280 mm blade
- Argos: Kärcher WV 6 Plus: 4.4★ from 210 reviews, 83% recommend
- Currys: Kärcher WV 6 Plus: Price £79.99, down from £109
- Kärcher UK: WV 6 Plus product information (PDF): 100 min run time, about 300 m², 150 ml tank, battery display
- Argos: Kärcher WV 1: Price £30 (was £40), 4.5★ from 621 reviews, 91% recommend, noise 2.4/5, 25 min run time, 250 mm blade, 0.51 kg; owner reports on a week per charge, leaks and tramline streaks
- Kärcher UK: WV 1: Product details
- Argos: Tower TWV10: 4.6★ from 355 reviews, 87% recommend
- Tower: TWV10 Cordless Window Vac: 30 min run time, 3-hour charge, 150 ml tank, 1-year guarantee or 3 years if registered
- Argos: Beldray Cordless Window Vacuum: Price £28, 4.3★ from 28 reviews, 75% recommend
- Argos Support: Kärcher WV 5 Plus FAQs (leaks, streaks, charging): Kärcher advice on leaks from the vents, streaks and charging from flat
- Homebuilding: best window vacs: Best overall pick (WV 6 Plus) and verdict quote; Beldray tested as best budget pick, must be kept upright; updated September 2026
- Expert Reviews: best window vacs: Kärcher WV 5 as best all-rounder; Beldray vertical-only and 60 ml tank
- Trusted Reviews: Kärcher Window Vac Anniversary Edition review: Hands-on review of the WV 2-based Anniversary Edition (2018): cleaning results, technique, 500 ml concentrate for about £5; verdict quote
- Leifheit: Dry & Clean window vacuum: Designed to work at any angle
- Kärcher UK: product guarantee: Window vacs: 2 years, or 3 years bought from Kärcher UK
- idealo: Kärcher 280 mm replacement blades 2.633-005.0: £8.39 to £14.53 from UK retailers; fits WV 2 and WV 5
- Kärcher Center JHS: wide replacement squeegee blades: £9.96 for the 280 mm blade set, compatible with WV 2
- PriceSpy: Kärcher RM 500 glass cleaner concentrate: 500 ml from £5.00 to £6.15; dilutes to 4 litres
Prices, star ratings, review counts and recommend percentages were taken from the Argos, Currys and brand pages listed here on 9 November 2026. Argos is the main source for owner ratings because it sells all five models and publishes recommend percentages and sub-scores such as noise. Blade and concentrate prices come from UK retailers and price-comparison sites, because Kärcher’s own shop does not list them for every model.
Expert evidence comes from Homebuilding, Expert Reviews and Trusted Reviews, plus Kärcher’s support answers on Argos. Quotes are copied word for word from the pages linked. The Trusted Reviews review covers an earlier WV 2-based model, which we say wherever we quote it.
No manufacturer or retailer supplied products, paid for inclusion or reviewed this guide before publication. We may earn a commission if you buy through a link, which does not affect the ranking.
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