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Kärcher WD 4 S V-20/5/22 Review | 43 Data compared

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  • Avg. price in UK: ~£110
  • Avg. price in US: ~$150
  • Suction pressure: 24 kPa
  • Capacity: 20 L
  • Power: 1,000 W
  • Noise level: 72 dB
  • Weight: 7.2 kg

Kärcher WD 4 S V-20/5/22 review. Compare 43 technical specifications and user reviews to see how this product ranks in the Wet-Dry Vacuums category and whether it is worth buying.

7.7

Overall score

What it is: An overall evaluation of products in the Wet-Dry Vacuums category, based on technical analysis and user reviews.

When it matters: When you need a quick reference for identifying the best products in the Wet-Dry Vacuums category.

Score components:

80.0%

7.3

Technical Score

20.0%

9.4

User score

Very good
7.3

Technical Score

What it is: An assessment of technical performance for products in the Wet-Dry Vacuums category across these key areas: Performance, Battery, Design & Mobility, Filter & Accessories.

When it matters: When you want to compare products in the Wet-Dry Vacuums category by technical performance, specifications, and available features.

Score components:

40.0%

7.4

Performance

22.0%

6.4

Design & Mobility

20.0%

8.7

Filter & Accessories

18.0%

6.5

Battery

Very good
9.4

User score

What it is: A rating that combines user reviews with the total review volume for products in the Wet-Dry Vacuums category.

When it matters: When you want to know how products in the Wet-Dry Vacuums category perform in everyday use and how reliable owners find them over time.

Score components:

70.0%

9.2

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.6
(397)
amazon
4.6
(216)

(Reviews last updated: August 2026)

Exceptional
  • 7.4
    Car cleaning

    Score components:

    30.0%

    6.2

    Weight

    25.0%

    4.0

    Cordless

    25.0%

    10

    Suction pressure

    20.0%

    10

    Noise level

  • 6.8
    Workshop & garage

    Score components:

    30.0%

    7.0

    Rated motor power

    25.0%

    6.9

    Capacity

    25.0%

    4.0

    Power tool socket

    20.0%

    10

    Suction pressure

  • 7.8
    Professional use

    Score components:

    30.0%

    7.0

    Rated motor power

    30.0%

    10

    Suction pressure

    25.0%

    6.9

    Capacity

    15.0%

    6.2

    Weight

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  • karcher-wd-4-s-v-20522
  • karcher-wd-4-s-v-20522
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Best prices in UK

Best rankings

?

Available: ranking among products currently available (including other versions of this product).
All: ranking among all products in the database.

Verdict

The Kärcher WD 4 S V-20/5/22 is an efficient wet and dry vacuum with a 1,000 W power draw, a rugged 20 L stainless-steel container, a 5 m cable and a 2.2 m, 35 mm suction hose. It delivers 240 W real suction, a patented quick-release flat pleated filter system, blower function and on-board accessory storage. It has no integrated automatic-start power-tool socket and can be somewhat noisy during extended use.

Technical Specifications of wet-dry vacuum Kärcher WD 4 S V-20/5/22

Technical Score

What it is: An assessment of technical performance for products in the Wet-Dry Vacuums category across these key areas: Performance, Battery, Design & Mobility, Filter & Accessories.

When it matters: When you want to compare products in the Wet-Dry Vacuums category by technical performance, specifications, and available features.

Score components:

40.0%

7.4

Performance

22.0%

6.4

Design & Mobility

20.0%

8.7

Filter & Accessories

18.0%

6.5

Battery

7.3
Kärcher WD 4 S V-20/5/22 has a technical score of 7.26 points, which is higher than 67.3% of products in this category.
User score

What it is: A rating that combines user reviews with the total review volume for products in the Wet-Dry Vacuums category.

When it matters: When you want to know how products in the Wet-Dry Vacuums category perform in everyday use and how reliable owners find them over time.

Score components:

70.0%

9.2

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.6
(397)
amazon
4.6
(216)

(Reviews last updated: August 2026)

9.4
Kärcher WD 4 S V-20/5/22 has a user score of 9.44 points, which is higher than 96% of products in this category.
Popularity
What it is: An indicator based on the number of reviews received by products in the Wet-Dry Vacuums category.
When it matters: When you prefer products in the Wet-Dry Vacuums category that have been chosen and reviewed by many other buyers.
10
Kärcher WD 4 S V-20/5/22 has a popularity of 10 points, which is higher than 66.8% of products in this category.
Ratio quality/price

What it is: An indicator that combines the overall score of products in the Wet-Dry Vacuums category with their prices.

When it matters: When you are comparing products in the Wet-Dry Vacuums category and want a good balance between quality and price.

Score components:

60.0%

7.7

Overall score

40.0%

9.9

Price

8.4
Kärcher WD 4 S V-20/5/22 has a quality-to-price ratio of 8.4 points, which is higher than 87.6% of products in this category.
Power
What it is: The rated electrical input of the vacuum motor.
When it matters: Higher power can help sustain demanding wet and dry cleaning, although suction design also matters.

Importance: HIGH

1,000 W
Kärcher WD 4 S V-20/5/22 has power of 1000 W, which is worse than 59.4% of wet-dry vacuums and equal to 8.2% of wet-dry vacuums.
Variable power
What it is: Whether the vacuum lets you adjust motor or suction power.
When it matters: Power adjustment helps match suction to delicate surfaces, heavy debris, and power-tool use.

Importance: MEDIUM

no
Kärcher WD 4 S V-20/5/22 has fixed suction power. 34.2% of wet-dry vacuums have adjustable suction power.
Capacity
What it is: The amount of liquid or debris the collection tank can hold.
When it matters: A larger tank reduces emptying interruptions during big spills and workshop cleanup.

Importance: HIGH

20 L
Kärcher WD 4 S V-20/5/22 has capacity of 20 L, which is better than 57.7% of wet-dry vacuums and equal to 15.4% of wet-dry vacuums.
Noise level
What it is: The sound level produced while the vacuum is running.
When it matters: Lower noise is useful for longer cleaning sessions and work in occupied spaces.

Importance: HIGH

72 dB
Kärcher WD 4 S V-20/5/22 has noise level of 72 dB, which is better than 82.3% of wet-dry vacuums and equal to 5.9% of wet-dry vacuums.
Suction pressure
What it is: The maximum pressure difference the vacuum can generate for suction.
When it matters: Higher suction pressure helps lift dense debris and extract liquid from difficult areas.

Importance: HIGH

24 kPa
Kärcher WD 4 S V-20/5/22 has suction pressure of 24 kPa, which is better than 89.9% of wet-dry vacuums and equal to 0.6% of wet-dry vacuums.
Show more
Cordless
What it is: Whether the vacuum can run without a mains power cable.
When it matters: Cordless operation improves mobility in cars, stairs, and areas without a nearby outlet.

Importance: MEDIUM

no
Kärcher WD 4 S V-20/5/22 requires a power cord. 29.6% of wet-dry vacuums support cordless operation.
Battery type
What it is: The battery chemistry used by a cordless vacuum.
When it matters: Battery chemistry affects weight, charging behavior, lifespan, and replacement options.

Importance: LOW

?
Battery runtime
What it is: How long the cordless vacuum can operate on one charge.
When it matters: Longer runtime lets you finish larger jobs without stopping to recharge.

Importance: MEDIUM

?
Charging time
What it is: The time required to recharge the battery.
When it matters: Faster charging reduces downtime between cleaning sessions.

Importance: MEDIUM

?
Battery voltage
What it is: The nominal voltage of the vacuum battery system.
When it matters: Voltage helps describe the battery platform and its available power class.

Importance: LOW

?
Show more
Power cable length
What it is: The length of the vacuum's mains power cable.
When it matters: A longer cable increases reach and reduces how often you change outlets.

Importance: MEDIUM

5 m
Kärcher WD 4 S V-20/5/22 has power cable length of 5 m, which is better than 45.7% of wet-dry vacuums and equal to 34.1% of wet-dry vacuums.
Operating radius
What it is: The total working reach provided by the cable, vacuum body, and hose.
When it matters: A larger radius lets you clean more space without moving the plug or machine.

Importance: MEDIUM

7.2 m
Kärcher WD 4 S V-20/5/22 has operating radius of 7.2 m, which is better than 50.7% of wet-dry vacuums and equal to 3.7% of wet-dry vacuums.
Bagless
What it is: Whether debris is collected directly in a reusable tank instead of a disposable bag.
When it matters: A bagless tank avoids replacement-bag costs and is convenient for wet pickup.

Importance: LOW

no
Kärcher WD 4 S V-20/5/22 requires collection bags. 66.2% of wet-dry vacuums use a bagless collection system.
Tank material
What it is: The material used for the vacuum's collection tank.
When it matters: Tank material affects durability, corrosion resistance, weight, and ease of cleaning.

Importance: LOW

stainless steel
Kärcher WD 4 S V-20/5/22 uses a more suitable tank material.
Power cable holder
What it is: Whether the vacuum has an integrated holder for the power cable.
When it matters: Onboard storage keeps the cable tidy and makes the vacuum easier to carry and store.

Importance: LOW

yes
Kärcher WD 4 S V-20/5/22 has onboard power-cable storage. This feature is present on 86.9% of wet-dry vacuums.
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N. of filters
What it is: The number of filtration elements supplied or used by the vacuum.
When it matters: Multiple filters can support different pickup modes or provide staged dust capture.

Importance: MEDIUM

2
Kärcher WD 4 S V-20/5/22 has 2 filters, which is better than 25.3% of wet-dry vacuums and equal to 55.6% of wet-dry vacuums.
HEPA filter
What it is: Whether the vacuum includes a high-efficiency particulate air filter.
When it matters: HEPA filtration helps capture fine dust and allergens from the exhaust air.

Importance: MEDIUM

?
Washable filter
What it is: Whether the filter can be cleaned with water and reused.
When it matters: A washable filter can reduce replacement costs and simplify maintenance.

Importance: MEDIUM

?
Automatic filter cleaning
What it is: Whether the vacuum cleans its filter automatically during operation.
When it matters: Automatic cleaning helps maintain suction during dusty work and reduces maintenance stops.

Importance: MEDIUM

?
Flexible hose
What it is: Whether a flexible suction hose is included.
When it matters: A flexible hose improves reach and control around furniture, vehicles, and tools.

Importance: LOW

?
Show more

Kärcher WD 4 S V-20/5/22 vs the average wet-dry vacuum

  • 6 kPa more suction pressure
    2 kPa more suction pressure: Kärcher WD 4 S V-20/5/22 has 24 kPa, while the average wet-dry vacuum has 18 kPa.
    What it is: The maximum pressure difference the vacuum can generate for suction.
    When it matters: Higher suction pressure helps lift dense debris and extract liquid from difficult areas.

    Importance: HIGH

    2 kPa more suction pressure: Kärcher WD 4 S V-20/5/22 has 24 kPa, while the average wet-dry vacuum has 18 kPa.24 kPa vs 18 kPa
  • 5 dB less operating noise
    2 dB less operating noise: Kärcher WD 4 S V-20/5/22 has 72 dB, while the average wet-dry vacuum has 77 dB.
    What it is: The sound level produced while the vacuum is running.
    When it matters: Lower noise is useful for longer cleaning sessions and work in occupied spaces.

    Importance: HIGH

    2 dB less operating noise: Kärcher WD 4 S V-20/5/22 has 72 dB, while the average wet-dry vacuum has 77 dB.72 dB vs 77 dB
  • More durable tank material
    Kärcher WD 4 S V-20/5/22 uses a more suitable tank material than the average wet-dry vacuum.
    What it is: The material used for the vacuum's collection tank.
    When it matters: Tank material affects durability, corrosion resistance, weight, and ease of cleaning.

    Importance: LOW

    Kärcher WD 4 S V-20/5/22 uses a more suitable tank material than the average wet-dry vacuum.stainless steel vs plastic
  • 5 L more tank capacity
    2 L more tank capacity: Kärcher WD 4 S V-20/5/22 has 20 L, while the average wet-dry vacuum has 15 L.
    What it is: The amount of liquid or debris the collection tank can hold.
    When it matters: A larger tank reduces emptying interruptions during big spills and workshop cleanup.

    Importance: HIGH

    2 L more tank capacity: Kärcher WD 4 S V-20/5/22 has 20 L, while the average wet-dry vacuum has 15 L.20 L vs 15 L
  • 12.5 L/s more airflow
    2 L/s more airflow: Kärcher WD 4 S V-20/5/22 has 55 L/s, while the average wet-dry vacuum has 42.5 L/s.
    What it is: The volume of air the vacuum moves through the hose each second.
    When it matters: Higher airflow helps collect light, bulky debris and clear larger surfaces quickly.

    Importance: HIGH

    2 L/s more airflow: Kärcher WD 4 S V-20/5/22 has 55 L/s, while the average wet-dry vacuum has 42.5 L/s.55 L/s vs 42.5 L/s
  • 18% higher user score
    Kärcher WD 4 S V-20/5/22 has a higher user score than the average wet-dry vacuum (9.44 vs 8).
    What it is: A rating that combines user reviews with the total review volume for products in the Wet-Dry Vacuums category.
    When it matters: When you want to know how products in the Wet-Dry Vacuums category perform in everyday use and how reliable owners find them over time.
    Kärcher WD 4 S V-20/5/22 has a higher user score than the average wet-dry vacuum (9.44 vs 8).9.44 vs 8
  • 61 mm less height
    2 mm less height: Kärcher WD 4 S V-20/5/22 has 524 mm, while the average wet-dry vacuum has 585 mm.
    What it is: The overall height of the vacuum.
    When it matters: A lower body may fit under shelves and be easier to store or transport.

    Importance: LOW

    2 mm less height: Kärcher WD 4 S V-20/5/22 has 524 mm, while the average wet-dry vacuum has 585 mm.524 mm vs 585 mm
  • 6% better value for money
    Kärcher WD 4 S V-20/5/22 offers better value for money than the average wet-dry vacuum (8.37 vs 7.898).
    What it is: An indicator that combines the overall score of products in the Wet-Dry Vacuums category with their prices.
    When it matters: When you are comparing products in the Wet-Dry Vacuums category and want a good balance between quality and price.
    Kärcher WD 4 S V-20/5/22 offers better value for money than the average wet-dry vacuum (8.37 vs 7.898).8.37 vs 7.9
  • 6 kPa more suction pressure
    2 kPa more suction pressure: Kärcher WD 4 S V-20/5/22 has 24 kPa, while the average wet-dry vacuum has 18 kPa.
  • 5 dB less operating noise
    2 dB less operating noise: Kärcher WD 4 S V-20/5/22 has 72 dB, while the average wet-dry vacuum has 77 dB.
  • 5 L more tank capacity
    2 L more tank capacity: Kärcher WD 4 S V-20/5/22 has 20 L, while the average wet-dry vacuum has 15 L.
  • 12.5 L/s more airflow
    2 L/s more airflow: Kärcher WD 4 S V-20/5/22 has 55 L/s, while the average wet-dry vacuum has 42.5 L/s.
  • More durable tank material
    Kärcher WD 4 S V-20/5/22 uses a more suitable tank material than the average wet-dry vacuum.
  • 61 mm less height
    2 mm less height: Kärcher WD 4 S V-20/5/22 has 524 mm, while the average wet-dry vacuum has 585 mm.
  • 0.19 m more operating radius
    2 m more operating radius: Kärcher WD 4 S V-20/5/22 has 7.2 m, while the average wet-dry vacuum has 7.01 m.
  • 0.07 m more hose length
    2 m more hose length: Kärcher WD 4 S V-20/5/22 has 2.2 m, while the average wet-dry vacuum has 2.134 m.
  • 280.4 cm³ less external volume
    2 cm³ less external volume: Kärcher WD 4 S V-20/5/22 has 73443.8 cm³, while the average wet-dry vacuum has 73724.2 cm³.

Total
Overall
Performance
Design & Mobility
  • No automatic full-tank shut-off
    Kärcher WD 4 S V-20/5/22 does not have automatic full-tank shut-off, while the average wet-dry vacuum has automatic full-tank shut-off.
  • 200 W less motor power
    2 W less motor power: Kärcher WD 4 S V-20/5/22 has 1000 W, while the average wet-dry vacuum has 1200 W.
  • Requires collection bags
    Kärcher WD 4 S V-20/5/22 uses a bagged collection system, while the average wet-dry vacuum uses a bagless collection system.
  • 1.53 kg more weight
    2 kg more weight: Kärcher WD 4 S V-20/5/22 has 7.2 kg, while the average wet-dry vacuum has 5.67 kg.
  • 34 mm more width
    2 mm more width: Kärcher WD 4 S V-20/5/22 has 384 mm, while the average wet-dry vacuum has 350 mm.
  • 18 mm more depth
    2 mm more depth: Kärcher WD 4 S V-20/5/22 has 365 mm, while the average wet-dry vacuum has 347 mm.
  • No automatic full-tank shut-off
    Kärcher WD 4 S V-20/5/22 does not have automatic full-tank shut-off, while the average wet-dry vacuum has automatic full-tank shut-off.
    What it is: Whether the vacuum stops suction automatically when the liquid tank is full.
    When it matters: Automatic shut-off helps prevent overflow and protects the motor during wet pickup.

    Importance: MEDIUM

    Kärcher WD 4 S V-20/5/22 does not have automatic full-tank shut-off, while the average wet-dry vacuum has automatic full-tank shut-off.
  • Requires collection bags
    Kärcher WD 4 S V-20/5/22 uses a bagged collection system, while the average wet-dry vacuum uses a bagless collection system.
    What it is: Whether debris is collected directly in a reusable tank instead of a disposable bag.
    When it matters: A bagless tank avoids replacement-bag costs and is convenient for wet pickup.

    Importance: LOW

    Kärcher WD 4 S V-20/5/22 uses a bagged collection system, while the average wet-dry vacuum uses a bagless collection system.
  • 1.53 kg more weight
    2 kg more weight: Kärcher WD 4 S V-20/5/22 has 7.2 kg, while the average wet-dry vacuum has 5.67 kg.
    What it is: The total mass of the vacuum.
    When it matters: Lower weight makes carrying, stair cleaning, and transport easier.

    Importance: HIGH

    2 kg more weight: Kärcher WD 4 S V-20/5/22 has 7.2 kg, while the average wet-dry vacuum has 5.67 kg.7.2 kg vs 5.67 kg
  • 200 W less motor power
    2 W less motor power: Kärcher WD 4 S V-20/5/22 has 1000 W, while the average wet-dry vacuum has 1200 W.
    What it is: The rated electrical input of the vacuum motor.
    When it matters: Higher power can help sustain demanding wet and dry cleaning, although suction design also matters.

    Importance: HIGH

    2 W less motor power: Kärcher WD 4 S V-20/5/22 has 1000 W, while the average wet-dry vacuum has 1200 W.1000 W vs 1200 W
  • 34 mm more width
    2 mm more width: Kärcher WD 4 S V-20/5/22 has 384 mm, while the average wet-dry vacuum has 350 mm.
    What it is: The side-to-side width of the vacuum body.
    When it matters: A narrower vacuum is easier to store and maneuver through tight spaces.

    Importance: LOW

    2 mm more width: Kärcher WD 4 S V-20/5/22 has 384 mm, while the average wet-dry vacuum has 350 mm.384 mm vs 350 mm
  • 18 mm more depth
    2 mm more depth: Kärcher WD 4 S V-20/5/22 has 365 mm, while the average wet-dry vacuum has 347 mm.
    What it is: The front-to-back depth of the vacuum body.
    When it matters: Less depth can make the vacuum easier to store on shelving or in a small workshop.

    Importance: LOW

    2 mm more depth: Kärcher WD 4 S V-20/5/22 has 365 mm, while the average wet-dry vacuum has 347 mm.365 mm vs 347 mm
Total
Performance
Design & Mobility

Graphic comparison of Kärcher WD 4 S V-20/5/22 and other products in the Wet-Dry Vacuums category

Attribute category
Attribute
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Third-party reviews

United Kingdom
amazon
4.6
397 Reviews
amazon
4.6
216 Reviews

(Reviews last updated: August 2026)

What customers like about Kärcher WD 4 S V-20/5/22?

  • Excellent suction power for both heavy dry debris and liquid spills
  • No filter changes needed when switching between wet and dry vacuuming
  • Clean and quick filter removal via a patented outer cassette design
  • Durable, impact-resistant 20-litre stainless steel tank
  • Convenient on-board storage hooks and clips for cables and accessories
  • Smooth-rolling wheels provide great mobility around workspaces
  • Includes a helpful integrated blowing function

What customers dislike about Kärcher WD 4 S V-20/5/22?

  • The machine has a bulky frame that can be awkward to store in tight spaces
  • Operating noise level is relatively loud, reaching around 84 dB
  • Swapping the internal fleece collection bag between wet and dry tasks can be tedious
  • The standard floorhead design is bulky and less ideal for daily indoor carpet cleaning
  • Lacks an adjustable dial to control or lower the suction power
  • The 5-metre power cord can sometimes feel short for larger outdoor project areas

Expert reviews

H
homesandgardens.com
25/06/2026
Summary of the review
Karcher WD4 Wet & Dry Vacuum Cleaner review
N
nettoyant.org
18/02/2026
Summary of the review
Kärcher WD 4 S review: 1000W wet and dry vacuum cleaner
(Translated)Show original

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