Buy the T 5 if you already own a Kärcher K2 to K7. It is the usual patio head, from about £55, and it is not a washer. Buy the T 7 Plus from about £75 only if that machine is already a K4 or bigger and the leftover strip against the house winds you up. Own nothing? Do not start with a head. Start with a 130 bar machine. The kit we send people to is the Kärcher K4 WCM Flex eco!Booster Home £229.
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Search treats “Kärcher patio cleaner” as a machine. It is a hooded disc that clips onto the gun. Two jets spin under a splash skirt. Without a compatible washer, a tap and a 13A socket, the carton is plastic. A cordless Ryobi patio cleaner pulls weeds from the joints. This washes the face of the slab.
Quick picks
Best everyday head
Kärcher T 5
From about £55
280 mm hood, height-adjustable jets, K 2 to K 7. The head most UK patios should start with.
Best for corners
Kärcher T 7 Plus
From about £75
Power nozzle for edges, rinse function, K 4 to K 7 only. Buy it if the T 5 already lives in a Home box.
Best if you need the washer
Kärcher K4 WCM Flex eco!Booster Home
£229
Max 130 bar Home kit with a T-Racer in the box.
Best kit for a big patio
K5 Power Control Flex
£339.99
145 bar, 500 L/h, 10 m Flex hose. The Kärcher if the drive is long and green.
Comparison table
| Model | What it is | Fits | Width | Typical UK price (Aug 2026) |
|---|---|---|---|---|
| T 5 | Clip-on head | K 2 to K 7 | 280 mm | From about £55. Screwfix £58.99. Trafalgar £55. Wickes £79, often £54. B&Q about £55 |
| T 7 Plus | Clip-on head | K 4 to K 7 | 288 mm | Trafalgar £74.99. JHS £87.97. Comparison sites about £83 to £106 |
| Kärcher K4 WCM Flex eco!Booster Home | Washer + T 5 | The washer is the K4 | T 5 in the box | £229 |
| K5 Power Control Flex | Washer + T 5 | The washer is the K5 | T 5 in the box | £339.99 |
Home and Car & Home are different cartons. Confirm the T 5 is in the box before you add one separately. Treat the Amazon Home links as the listing. Check latest price before you lock a figure.
Kärcher T 5 T-Racer
The usual head if you already own a K-series washer
- Buy: Wickes £79 list, often £54 on offer · Screwfix £58.99 · Trafalgar £55 · JHS · Kärcher UK
- Fits: K 2 to K 7, bayonet on the gun
- Width / weight: 280 mm, 1.4 kg
- In the box: the head. No washer.
Two flat jets sit on a rotating arm under a hood. The hood is the point. A dirt-blaster lance throws grit up the wall and through the kitchen door. This keeps most of that water on the stone. Hard York and concrete want the closer jet setting. Decking wants the higher one. Keep the skirt flat. Tilt it and you have invented a dirt blaster again.
A K2 will spin it and still feel thin on a green terrace. If the washer is a K2 and the patio is the main job, buy a Kärcher K4 WCM Flex eco!Booster Home, not a £55 disc on a weak pump. Bosch and Nilfisk guns will not take this bayonet. Street price sits around £55. Trafalgar is £55 including VAT. Screwfix is £58.99. Wickes lists £79 and has been on offer at £54. Toolstation at £94.99 is not the price to pay.
Skip it if you do not own a Kärcher, if a Home kit is already in the basket, or if the only dirt is moss in the joints. This head washes the face. It does not pick weeds.
Kärcher T 7 Plus T-Racer
The spend if you already have a K4 to K7 and hate a dirty border
- Buy: Trafalgar £74.99 inc VAT · JHS £87.97 · Kärcher UK
- Fits: K 4 to K 7 only
- Width / weight: 288 mm, 1.9 kg
- In the box: the head. No washer.
Same twin-jet idea, slightly wider hood. The extra is a front power nozzle and a rinse jet for corners. That is the job the T 5 leaves for a lance. It will not run on a K2 or K3. Trafalgar’s £74.99 is the clearest specialist figure. Comparison sites have run from about £83 to £106. Some shops still print T 450. That is the old name. If a Home kit already gave you a T 5, use that for a season. Skip it on a K2 or K3, or if you were quoted over £120.
Kärcher K4 WCM Flex eco!Booster Home
The honest “Kärcher patio cleaner” if you own nothing
- Buy: Amazon Home listing · Check latest price £229 · Check latest price · Check latest price
- Pressure / flow: 20 to 130 bar, 420 L/h
- Hose: 8 m PremiumFlex
- In the box (Home): K4, Power Control gun, Vario, dirt blaster, T 5, 1 L stone cleaner
You are buying a tap-fed 130 bar washer that also washes a car. The head is the extra. Do not add a second T 5. Bare K4 Flex machines have been £169. Home kits sit around £220 to £260. Confirm VAT on Viking’s ticket. B&Q’s Car & Home at £259 adds foam and car extras as well as the T 5. Shop the carton, not the word Home on a banner. Skip this kit if you already own a working K4 or K5. No outdoor socket and no tap? See the cordless guide.
Kärcher K5 Power Control Flex
Same T 5. More litres and a longer hose
- Buy: Amazon Home listing £339.99 · ITS has listed £299.99 · Check latest price
- Pressure / flow: 20 to 145 bar, 500 L/h
- Hose: 10 m PremiumFlex on the Flex cartons
- In the box (Home): K5, Power Control gun, Vario and dirt blaster, T 5, 1 L stone cleaner
The upgrade is litres and hose, not a better head. Ten metres means you park once. A pencil jet along a joint will blow the sand out. Bare K5 plus a T 5 is about £295. A Home kit at £300 is then a wash. A kit at £370 is a luxury. Skip the K5 on a small yard. Already own the washer? Add the T 5, or the T 7 Plus for the edge jet.
How to choose
Own a K2 to K7 already? Buy the head. The T 5 is the default. The T 7 Plus is the edge upgrade for K4 to K7. Own nothing? Buy the Kärcher K4 WCM Flex eco!Booster Home. If the list says T 5, do not add another. A T 1, common on K2 Home, is a smaller head. First-use sits on how to use a pressure washer.
The face of the slab is this head. The joints are a brush or the Ryobi patio cleaner. A dirt blaster along the pointing will blow the sand out. On timber, raise the jets and keep moving.
FAQ
Is a Kärcher patio cleaner a pressure washer?
No. It is a clip-on head. Some shops use the same words for a Home kit. T 5 fits K 2 to K 7. T 7 Plus is K 4 to K 7 only. Home kits already include a T 5. K2 Home uses a T 1. It washes the face, not weeds in the joints, and it is not for a car. That is the cars page.