The Karcher K 4 WCM Flex eco!Booster is built for occasional cleaning around the home and garden. It delivers up to 130 bar from a 1.8kW motor on a 230 to 240V supply. Paths, patios, garden furniture and cars are its target.
Flow is 420 litres an hour. Area performance is 30 m2 an hour. The eco!Booster lance gives about 50 percent more cleaning performance than a standard Karcher flat jet. It also saves water and energy. For stubborn marks switch to the Dirtblaster lance.
Its water cooled motor is the main selling point. Karcher says it gives a longer service life and dependable running. The 8m PremiumFlex hose gives good reach over medium areas. An integrated filter protects the pump. Quick Connect lets you swap lances in seconds. Detergent goes on through the suction hose. Accessories store on the machine.
It weighs 11.8kg without accessories with a 5m cable. Pick it if you want a longer lasting motor than basic home washers. The Karcher Home and Garden app also offers cleaning tips.
| Brand | Karcher |
| Product Type | Pressure washer |
| Washer Type | Electric |
| Hot Water | No |
| Connection | Karcher Quick Connect (K) |
| Home or Pro | Home |
| Max Pressure | 130 bar |
| Flow Rate | 420 l/h |
| Area Performance | 30 m²/h |
| Motor | Water-cooled |
| Power | 1800W |
| Voltage | 240V |
| Cable Length | 5m |
| Hose Length | 8m |
| Detergent System | Suction hose |
| Patio Cleaner Included | No |
| Weight | 11.8kg |
| Included Accessories | eco!Booster lance, Dirtblaster lance, 8m PremiumFlex high pressure hose |
| Warranty | Karcher manufacturer warranty |
| Model | K 4 WCM Flex eco!Booster |
| Rated input power | 1.8kW |
| Max water feed temperature | 40 C |
| Colour | Yellow |
| Weight including packaging | 15.5kg |
| Dimensions | 369 x 329 x 901mm |
| Delivery | My Tool Shed courier, usually next working day, from £5.95 (surcharge for the Highlands, Islands and Northern Ireland) |
| Returns | 30-day returns on unused items, My Tool Shed's terms apply, buyer pays return postage |
My Tool Shed sends most orders by courier, usually for delivery the next working day. Delivery starts from £5.95.
Delivery covers the UK. The Highlands, the Islands and Northern Ireland carry a surcharge, so check the cost for your postcode at checkout.
My Tool Shed takes Visa, Mastercard, Amex, PayPal, Apple Pay and Google Pay.
Unused items in original packaging can be returned to My Tool Shed within 30 days. You pay the return postage and the retailer's terms apply.
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