10% off your first order! Subscribe to our newsletter.

Free Shipping Over £50

Multiple Secure Payment Options

Up to 6 Years Product Guarantee

    • Home & Garden
    • Professional
    kaercher logo
    • Products
      • Pressure Washers
        Pressure Washers
      • Wet and dry vacuum cleaners
        Wet and dry vacuum cleaners
      • Window Vacs
        Window Vacs
      • Window cleaning robot
        Window cleaning robot
      • Steam cleaners
        Steam cleaners
      • Carpet and Spot Cleaners
        Carpet and Spot Cleaners
      • Vacuum cleaners
        Vacuum cleaners
      • Garden Tools
        Garden Tools
      • Decking Cleaner
        Decking Cleaner
      • Mobile Cleaning
        Mobile Cleaning
      • Hard floor cleaner
        Hard floor cleaner
      • Vacuum mop
        Vacuum mop
      • Electric wiping mop
        Electric wiping mop
      • Robot vacuums and mops
        Robot vacuums and mops
      • Air treatment
        Air treatment
      • Ash vacuum cleaners
        Ash vacuum cleaners
      • Push sweepers
        Push sweepers
      • Watering systems
        Watering systems
      • Drainage pumps
        Drainage pumps
      • Merchandising
        Merchandising
      • Accessory
        Accessory
      • Cleaning agents
        Cleaning agents
    • Know How
      • Cleaning living spaces
        Cleaning living spaces
      • Cleaning the bathroom
        Cleaning the bathroom
      • Cleaning windows
        Cleaning windows
      • Cleaning conservatory
        Cleaning conservatory
      • Bike cleaning
        Bike cleaning
      • All about garden maintenance
        All about garden maintenance
      • Show all
    • Services
      • Help & Support
        Help & Support
      • Register Your Product
        Register Your Product
      • Downloads
        Downloads
      • Online Shop Information
        Online Shop Information
    • Summer Sale
      • Shop Summer Deals
        Shop Summer Deals
      • NEW Pressure Washers
        NEW Pressure Washers
      • Detergents
        Detergents
      • Accessories
        Accessories
    • NEW
      • NEW Comfort Premium Pressure Washers
        NEW Comfort Premium Pressure Washers
      • New to Kärcher
        New to Kärcher
    Yellow Kärcher wet and dry vacuum cleaner with hose, floor nozzle, crevice tool, filter, and dust bag on white background.

    Awards and exclusive range

    IF Design Award 2022

    Wet and dry vacuum cleaner

    WD 4 – 20L

    Part number: 1.628-211.0

    • Patented Filter Box allows for mess-free filter removal in seconds without contact with dirt.
    • 240W suction power, 20L container, and 7.2m total operating radius.
    • Includes flat pleated filter and fleece bag for high-volume cleaning.
    Rated input power (W)
    1100
    Suction Power (W)
    240
    Vacuum (mbar)
    240
    Air flow (l/s)
    55
    Container capacity (l)
    20
    Container material
    Plastic
    Power Cable (m)
    5
    Standard accessory ID (mm)
    35
    Voltage (V)
    220 - 240
    Frequency (Hz)
    50 - 60
    Sound pressure level (dB(A))
    73
    Colour
    Yellow
    Weight without accessories (kg)
    6.9
    Weight incl. packaging (kg)
    9.7
    Dimensions (L × W × H) (mm)
    384 x 365 x 526

    Scope of supply

    • Suction hose length: 2.2m
    • Suction hose type: with bent handle
    • Suction hose material: Plastic
    • Removable handle
    • Quantity of suction tubes: 2Piece(s)
    • Suction tubes length: 0.5m
    • Suction tubes nominal width: 35mm
    • Suction tubes material: Plastic
    • Wet and dry floor nozzle: Clips
    • Crevice nozzle

    Equipment

    • Flat pleated filter: Cellulose
    • Fleece filter bag: 3-layer
    • Rotary switch (On/Off)
    • Blower function
    • Intermediate parking position of the handle on the device head
    • Hose storage on the device head
    • Additional accessory storage on the device head
    • Storage space for small parts
    • Cable hook
    • Parking position
    • Accessory storage on the device
    • Sturdy bumper
    Made in Europe
    The WD 4 20L is designed for substantial home projects where a standard vacuum lacks the durability required. This machine provides 240W of suction power to clear fine dust and heavy debris. The Patented Filter Box positions the filter at the top of the machine, ensuring it never gets wet during liquid recovery. This top-mounted design ensures the entire 20L container capacity is available for debris and liquids. To ensure you do not have to stop mid-job, the Air-Flush function clears the filter with a pulse of air. To maintain peak performance, always use a fleece filter bag for dry debris; explicitly remove the fleece filter bag for all liquid pickup.
    a5fd4546 d5bd 4106 a382 9baecaf9e1b8
    Flat Pleated Filter featuring a top-mounted design that stays dry during wet use
    Quick and easy removal of the filter from the filter box – without contact with dirt. Switch between wet and dry tasks without stopping to change filters.
    0dcfecd7 0839 4a89 b75c 64b743585070
    Hose storage on the device head
    Compact hose storage using the securing mechanism for easy transport. Intuitive securing mechanisms designed for convenient handling during transport.
    87edead4 14ee 4d03 9b5c ea06e9e2eb45
    Extra-Long Reach with a 10.2m total working radius from the 8m cable and 2.2m hose
    Integrated accessory storage ensures tools are kept secure on the 7L container. Combines an 8m cable, 2.2m hose for a wide cleaning reach.
    Fleece filter bag with a secure locking system for dust-free disposal.
    Extra-durable, triple-layered fleece ensures high dust retention for tough tasks. ‘Steel Ball’ tested to guarantee consistent pickup without motor fatigue.
    Versatile Blower Function effortlessly dislodges debris from gravel beds and tight corners
    The blower function helps gather scattered debris into one place for quick pickup. Dislodge debris from gravel beds or tight gaps where suction alone is insufficient.
    Parking Position for quick storage of the suction tube and floor nozzle during work breaks
    Quick and convenient temporary storage of suction tube and floor nozzle during breaks.
    Integrated storage shelf for safely storing tools and small parts like screws.
    Integrated shelf provides safe storage for screws, nails, and small DIY parts.
    Quickly park the handle on the device head for stoppages and interruptions.
    Handle-parking feature for quick stoppages during secondary cleaning tasks.
    Removable handle
    Offers the possibility of attaching different nozzles directly on the suction hose. For easy vacuuming even in the tightest of spaces.
    280AW of suction power delivers the performance your standard indoor kit is missing.
    Clears the heavy-duty mess and liquid spills that would damage indoor cleaners. Ultimate secondary cleaning essential for large-scale projects and renovations.

    Manufacturer: Alfred Kärcher SE & Co. KG
    Alfred-Kärcher-Strasse 28-40, 71364 Winnenden, Germany
    Tel. +49 7195 / 14-0 I Fax +49 7195 / 14-2212
    E-mail: info@karcher.com

    Manual

    Read the manual online easily

    Read online
    • Product information

      Product information

      Download PDF
    • Manual

      Manual

      Download PDF
    • Manual

      Manual

      Download PDF

    Application areas

    • Patio
    • Vehicle interior
    • Garage
    • Workshop
    • Cellar
    • Liquids
    • Utility area
    • Hobby room

    Newsletter signup banner

    10% off your first order! Subscribe to our newsletter.

    • Company
    • Careers
    • Sustainability
    • Newsroom
    • Online Shop Information
    • Welcome to Kärcher
    • Product Guarantee
    • Kärcher on Social Media
    • Join the Kärcher Affiliate Program
    • Key Worker Discount
    • Student Discount
    • Senior Discount
    • Imprint
    • Disclaimer
    • Privacy Information
    • Cookie Policy
    • Terms & Conditions of Sale
    • Returns & Cancellation Policy
    • WEEE & Battery Collection
    • Compliance & Integrity

    Kärcher UK Ltd
    Kärcher House
    Brookhill Way
    Banbury, Oxfordshire
    OX16 3ED

    To get you speaking to the correct team for your enquiry, please visit our Contact page for more details.

    • Visa Logo
    • Mastercard logo
    • Paypal logo
    • Icon 4

    About Kärcher

    • Company
    • Careers
    • Sustainability
    • Newsroom

    Follow Us

    Online Shop

    • Online Shop Information
    • Welcome to Kärcher
    • Product Guarantee
    • Kärcher on Social Media
    • Join the Kärcher Affiliate Program
    • Key Worker Discount
    • Student Discount
    • Senior Discount

    Legal

    • Imprint
    • Disclaimer
    • Privacy Information
    • Cookie Policy
    • Terms & Conditions of Sale
    • Returns & Cancellation Policy
    • WEEE & Battery Collection
    • Compliance & Integrity

    Contact

    Kärcher UK Ltd
    Kärcher House
    Brookhill Way
    Banbury, Oxfordshire
    OX16 3ED

    To get you speaking to the correct team for your enquiry, please visit our Contact page for more details.

    Payment

    • Visa Logo
    • Mastercard logo
    • Paypal logo
    • Icon 4
    SSL Secured

    © 2026 Alfred Kärcher UK