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Karcher SG 4/4 Review | 61 Data compared

Avg. price:~£1,220Heat-up time:1080 secondsPower rating:2300 WWeight:8 kg

Karcher SG 4/4 Review: Compare 61 technical specifications and user reviews to see how this product ranks in the Steam Cleaners category and whether it is worth buying.

6.8

Overall score

Score
6.8/ 10
✕
What it is
An overall evaluation of products in the Steam Cleaners category, based on technical analysis and user reviews.
When it matters
When you need a quick reference for identifying the best products in the Steam Cleaners category.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 76% of models
Score components

80%

7.9

Technical Score

20%

2.2

User score

â–¼Worse than 76% of steam-cleaners
7.9

Technical Score

Technical score
7.9/ 10
✕
What it is
An assessment of technical performance for products in the Steam Cleaners category across these key areas: Performance, Tank, Versatility, Accessories, Design, Safety.
When it matters
When you want to compare products in the Steam Cleaners category by technical performance, specifications, and available features.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 83% of models
Score components

28%

7.2

Performance

24%

9.0

Tank

21%

8.8

Versatility

10%

5.9

Accessories

9%

6.9

Design

8%

8.1

Safety

â–²Better than 83% of steam-cleaners
2.2

User score

User score
2.2/ 10
✕
What it is
A rating that combines user reviews with the total review volume for products in the Steam Cleaners category.
When it matters
When you want to know how products in the Steam Cleaners category perform in everyday use and how reliable owners find them over time.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 99% of models
Score components

70%

2.0

User ratings

30%

2.6

Number of reviews

Based on 4 buyer reviews from online shops.
Read buyer reviews on Amazon →
How we calculate this
User ratings – average star rating across all shop listings, weighted by how many reviews each has, on a 1–10 scale.
Number of reviews – how many buyer reviews the product has, on a logarithmic scale; the 8% most-reviewed models in the category get 10.
â–¼Worse than 99% of steam-cleaners
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Best prices

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Best rankings

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

The Kärcher SG 4/4 is a 2,300 W professional steam cleaner producing up to 4 bar of pressure and boiler temperatures as high as 145 °C for chemical-free hygienic cleaning. Its dual-tank system combines a 2.4-litre boiler with a 2-litre clean-water tank, allowing continuous refilling, while the 7.5-metre cable provides a broad working radius. Integrated accessory storage and the VapoHydro function, which progressively adds hot water to the steam, help tackle greasy and stubborn dirt. The principal drawbacks are a warm-up time of around nine minutes, an 8 kg empty weight and a high purchase cost aimed mainly at commercial users.

Technical Specifications of steam cleaner Karcher SG 4/4

Technical Score
Technical score
7.9/ 10
✕
What it is
An assessment of technical performance for products in the Steam Cleaners category across these key areas: Performance, Tank, Versatility, Accessories, Design, Safety.
When it matters
When you want to compare products in the Steam Cleaners category by technical performance, specifications, and available features.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 83% of models
Score components:

28%

7.2

Performance

24%

9.0

Tank

21%

8.8

Versatility

10%

5.9

Accessories

9%

6.9

Design

8%

8.1

Safety

7.9
Karcher SG 4/4 has a technical score of 7.9 points, which is higher than 82.5% of products in this category.
User score
User score
2.2/ 10
✕
What it is
A rating that combines user reviews with the total review volume for products in the Steam Cleaners category.
When it matters
When you want to know how products in the Steam Cleaners category perform in everyday use and how reliable owners find them over time.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 99% of models
Score components

70%

2.0

User ratings

30%

2.6

Number of reviews

Based on 4 buyer reviews from online shops.
Read buyer reviews on Amazon →
How we calculate this
User ratings – average star rating across all shop listings, weighted by how many reviews each has, on a 1–10 scale.
Number of reviews – how many buyer reviews the product has, on a logarithmic scale; the 8% most-reviewed models in the category get 10.
2.2
Karcher SG 4/4 has a user score of 2.19 points, which is lower than 100% of products in this category.
Popularity
Popularity
2.6/ 10
✕
What it is
An indicator based on the number of reviews received by products in the Steam Cleaners category.
When it matters
When you prefer products in the Steam Cleaners category that have been chosen and reviewed by many other buyers.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 86% of models
Popularity:
Karcher SG 4/4 has a popularity score of 2.6 points, which is lower than 86% of products in this category.
2.6
Karcher SG 4/4 has a popularity score of 2.6 points, which is lower than 86% of products in this category.
Ratio quality/price
Value for money
6.0/ 10
✕
What it is
An indicator that combines the overall score of products in the Steam Cleaners category with their prices.
When it matters
When you are comparing products in the Steam Cleaners category and want a good balance between quality and price.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 99% of models
Score components:

60%

6.8

Overall score

40%

4.1

Price

6.0
Karcher SG 4/4 has a value-for-money score of 6 points, which is lower than 100% of products in this category.
Steam pressure
4 bar
Steam pressure
4 bar
â–² Better than 50% of models
Market range: <3 bar – >5 bar
This steam cleaner has a steam pressure of 4 bar, which is higher than that of 50% of steam cleaners and matches that of 28.4% of steam cleaners.
Steam temperature
?
Steam flow rate
82 g/min
Steam flow rate
82 g/min
â–² Better than 67% of models
Market range: <24 g/min – >110 g/min
This steam cleaner has a steam flow rate of 82 g/min, which is higher than that of 67.1% of steam cleaners.
Heat-up time
1,080 seconds
Heat-up time
1,080 seconds
â–¼ Worse than 99% of models
Market range: <15 seconds – >540 seconds
This steam cleaner has a heat-up time of 1,080 seconds, which is longer than that of 99.3% of steam cleaners.
Continuous steam time
?
Show more
Cordless
no
Cordless
no
â–¼ Worse than 4% of models
This steam cleaner is corded only, unlike 4.2% of steam cleaners.
Action radius
11 m
Action radius
11 m
★ Better than 99% of models
Market range: <5 m – >8.5 m
This steam cleaner has an action radius of 11 m, which is longer than that of 99.2% of steam cleaners.
Stainless steel boiler
no
Stainless steel boiler
no
â–¼ Worse than 23% of models
This steam cleaner does not have a stainless steel boiler, unlike 22.5% of steam cleaners.
Power rating
2,300 W
Power rating
2,300 W
★ Better than 97% of models
Market range: <1.1k W – >2.1k W
This steam cleaner has a power rating of 2,300 W, which is higher than that of 96.5% of steam cleaners.
Water tank capacity
2000 ml
Water tank capacity
2000 ml
★ Better than 91% of models
Market range: <300 ml – >1.9k ml
This steam cleaner has a water tank capacity of 2000 ml, which is larger than that of 90.8% of steam cleaners and matches that of 5.8% of steam cleaners.
Show more
Suitable for allergy sufferers
yes
Suitable for allergy sufferers
yes
â–² Better than 8% of models
This steam cleaner is suitable for allergy sufferers, as are 91.6% of steam cleaners.
Product type
canister steam cleaner
Convertible handheld design
no
Convertible handheld design
no
â–¼ Worse than 18% of models
This steam cleaner does not have a convertible handheld design, unlike 18.2% of steam cleaners.
Steam vacuum function
no
Steam vacuum function
no
â–¼ Worse than 13% of models
This steam cleaner does not have a steam vacuum function, unlike 12.6% of steam cleaners.
Floor nozzle type
Rectangular floor head
Show more
Accessory count
10
Accessory count
10
â–² Better than 51% of models
Market range: <4 – >17
This steam cleaner includes 10 accessories, which is more than the number included with 51.4% of steam cleaners and the same as the number included with 9.2% of steam cleaners.
Mop pads included
1
Mop pads included
1
â–¼ Worse than 35% of models
Market range: <0 – >2
This steam cleaner includes 1 mop pad, which is more than the number included with 12.6% of steam cleaners and the same as the number included with 52.5% of steam cleaners.
Carpet glider included
no
Carpet glider included
no
â–¼ Worse than 31% of models
This steam cleaner does not have a carpet glider, unlike 31.5% of steam cleaners.
Extension tubes / wands
yes
Extension tubes / wands
yes
â–² Better than 44% of models
This steam cleaner has extension tubes or wands, as do 55.9% of steam cleaners.
Extension hose
no
Extension hose
no
â–¼ Worse than 20% of models
This steam cleaner does not have an extension hose, unlike 19.6% of steam cleaners.
Show more
Wheels
yes
Wheels
yes
â–² Better than 45% of models
This steam cleaner has wheels, as do 55.2% of steam cleaners.
Volume
40.608 L
Volume
40.608 L
â–² Better than 58% of models
Market range: <16.224 L – >84.378 L
This steam cleaner has an external volume of 40.608 L.
Weight
8 kg
Weight
8 kg
â–¼ Worse than 92% of models
Market range: <1.18 kg – >7 kg
This steam cleaner weighs 8 kg, which is heavier than 92.3% of steam cleaners and the same weight as 1.4% of steam cleaners.
Width
320 mm
Height
270 mm
Show more
Child safety lock
yes
Child safety lock
yes
â–² Better than 41% of models
This steam cleaner has a child safety lock, as do 59.4% of steam cleaners.
Safety valve / safety cap
yes
Safety valve / safety cap
yes
â–² Better than 40% of models
This steam cleaner has a safety valve or safety cap, as do 60.1% of steam cleaners.
Auto shut-off
no
Auto shut-off
no
â–¼ Worse than 13% of models
This steam cleaner does not have automatic shut-off, unlike 13.3% of steam cleaners.
Trigger lock / continuous steam lock
yes
Trigger lock / continuous steam lock
yes
â–² Better than 74% of models
This steam cleaner has a trigger lock for continuous steam, as do 25.9% of steam cleaners.
Descaling system
no
Descaling system
no
â–¼ Worse than 26% of models
This steam cleaner does not have a descaling system, unlike 25.9% of steam cleaners.
Show more

Karcher SG 4/4 vs the average steam cleaner

246810TotalPerformanceTankVersatilityAccessoriesDesignSafety
  • 1,200 ml larger water tank capacity
    Water tank capacity
    2000 ml
    ★ Better than 91% of models
    Market range: <300 ml – >1.9k ml
    This steam cleaner has a larger water tank capacity than the average steam cleaner (2000 ml vs 800 ml).
    2,000 ml vs 800 ml
  • 4 m longer action radius
    Action radius
    11 m
    ★ Better than 99% of models
    Market range: <5 m – >8.5 m
    This steam cleaner has a longer action radius than the average steam cleaner (11 m vs 7 m).
    11 m vs 7 m
  • 1,400 ml larger boiler capacity
    Boiler capacity
    2,400 ml
    ★ Better than 97% of models
    Market range: <200 ml – >1.8k ml
    This steam cleaner has a larger boiler capacity than the average steam cleaner (2400 ml vs 1000 ml).
    2,400 ml vs 1,000 ml
  • 800 W higher power rating
    Power rating
    2,300 W
    ★ Better than 97% of models
    Market range: <1.1k W – >2.1k W
    This steam cleaner has a higher power rating than the average steam cleaner (2300 W vs 1500 W).
    2,300 W vs 1,500 W
  • 42 g/min higher steam flow rate
    Steam flow rate
    82 g/min
    â–² Better than 67% of models
    Market range: <24 g/min – >110 g/min
    This steam cleaner has a higher steam flow rate than the average steam cleaner (82 g/min vs 40 g/min).
    82 g/min vs 40 g/min
  • 0.5 m longer hose
    Hose length
    2.5 m
    â–² Better than 79% of models
    Market range: <1 m – >2.5 m
    This steam cleaner has a longer hose than the average steam cleaner (2.5 m vs 2 m).
    2.5 m vs 2 m
  • 2.5 m longer power cord
    Power cord length
    7.5 m
    â–² Better than 85% of models
    Market range: <4 m – >7.5 m
    This steam cleaner has a longer power cord than the average steam cleaner (7.5 m vs 5 m).
    7.5 m vs 5 m
  • Includes a continuous-steam trigger lock
    Trigger lock / continuous steam lock
    yes
    â–² Better than 74% of models
    This steam cleaner has a trigger lock for continuous steam, while the average steam cleaner does not have a trigger lock for continuous steam.
  • 42 g/min higher steam flow rate
    Steam flow rate
    82 g/min
    â–² Better than 67% of models
    Market range: <24 g/min – >110 g/min
    This steam cleaner has a higher steam flow rate than the average steam cleaner (82 g/min vs 40 g/min).
    82 g/min vs 40 g/min
  • 1,200 ml larger water tank capacity
    Water tank capacity
    2000 ml
    ★ Better than 91% of models
    Market range: <300 ml – >1.9k ml
    This steam cleaner has a larger water tank capacity than the average steam cleaner (2000 ml vs 800 ml).
    2,000 ml vs 800 ml
  • 4 m longer action radius
    Action radius
    11 m
    ★ Better than 99% of models
    Market range: <5 m – >8.5 m
    This steam cleaner has a longer action radius than the average steam cleaner (11 m vs 7 m).
    11 m vs 7 m
  • 1,400 ml larger boiler capacity
    Boiler capacity
    2,400 ml
    ★ Better than 97% of models
    Market range: <200 ml – >1.8k ml
    This steam cleaner has a larger boiler capacity than the average steam cleaner (2400 ml vs 1000 ml).
    2,400 ml vs 1,000 ml
  • 800 W higher power rating
    Power rating
    2,300 W
    ★ Better than 97% of models
    Market range: <1.1k W – >2.1k W
    This steam cleaner has a higher power rating than the average steam cleaner (2300 W vs 1500 W).
    2,300 W vs 1,500 W
  • 0.5 m longer hose
    Hose length
    2.5 m
    â–² Better than 79% of models
    Market range: <1 m – >2.5 m
    This steam cleaner has a longer hose than the average steam cleaner (2.5 m vs 2 m).
    2.5 m vs 2 m
  • 2.5 m longer power cord
    Power cord length
    7.5 m
    â–² Better than 85% of models
    Market range: <4 m – >7.5 m
    This steam cleaner has a longer power cord than the average steam cleaner (7.5 m vs 5 m).
    7.5 m vs 5 m
  • 1.5 cm wider cleaning width
    Cleaning width
    32 cm
    â–² Better than 71% of models
    Market range: <27 cm – >37.8 cm
    This steam cleaner has a wider cleaning width than the average steam cleaner (32 cm vs 30.5 cm).
    32 cm vs 30.5 cm
  • 1 more accessories
    Accessory count
    10
    â–² Better than 51% of models
    Market range: <4 – >17
    This steam cleaner includes more accessories than the average steam cleaner (10 vs 9).
    10 vs 9
  • Includes a continuous-steam trigger lock
    Trigger lock / continuous steam lock
    yes
    â–² Better than 74% of models
    This steam cleaner has a trigger lock for continuous steam, while the average steam cleaner does not have a trigger lock for continuous steam.
  • Includes a descaling reminder
    Descaling reminder
    yes
    â–² Better than 87% of models
    This steam cleaner has a descaling reminder, while the average steam cleaner does not have a descaling reminder.
  • 930 seconds longer heat-up time
    Heat-up time
    1,080 seconds
    â–¼ Worse than 99% of models
    Market range: <15 seconds – >540 seconds
    This steam cleaner has a longer heat-up time than the average steam cleaner (1080 seconds vs 150 seconds).
    1,080 seconds vs 150 seconds
  • No upholstery / fabric tool
    Upholstery / fabric tool
    no
    â–¼ Worse than 55% of models
    This steam cleaner does not have an upholstery or fabric tool, while the average steam cleaner has an upholstery or fabric tool.
  • 2.05x heavier
    Weight
    8 kg
    â–¼ Worse than 92% of models
    Market range: <1.18 kg – >7 kg
    40% heavier: this steam cleaner is heavier than the average steam cleaner (8 kg vs 3.91 kg).
    8 kg vs 3.91 kg
  • No swivel / flexible floor head
    Swivel / flexible floor head
    no
    â–¼ Worse than 80% of models
    This steam cleaner does not have a swivel or flexible floor head, while the average steam cleaner has a swivel or flexible floor head.
  • 9.38x more expensive
    Karcher SG 4/4 is more expensive than the average steam cleaner (£1,220 vs £130).
    £1,220 vs £130
  • 3.65x lower user score
    User score
    2.2/ 10
    ✕
    What it is
    A rating that combines user reviews with the total review volume for products in the Steam Cleaners category.
    When it matters
    When you want to know how products in the Steam Cleaners category perform in everyday use and how reliable owners find them over time.
    Score distribution
    â–¼
    â–¼
    <55-66-77-88-99-10
    Karcher SG 4/4
    the average steam cleaner
    â–¼ Worse than 99% of models
    Karcher SG 4/4 has a lower user score than the average steam cleaner (2.19 vs 8.004).
    2.19 vs 8
  • 33.8% worse value for money
    Karcher SG 4/4 offers worse value for money than the average steam cleaner (5.96 vs 8).
    5.96 vs 7.97
  • 2.85x less popular
    Karcher SG 4/4 is less popular than the average steam cleaner (2.64 vs 7.5).
    2.64 vs 7.51
  • 9.38x more expensive
    Karcher SG 4/4 is more expensive than the average steam cleaner (£1,220 vs £130).
    £1,220 vs £130
  • 3.65x lower user score
    User score
    2.2/ 10
    ✕
    What it is
    A rating that combines user reviews with the total review volume for products in the Steam Cleaners category.
    When it matters
    When you want to know how products in the Steam Cleaners category perform in everyday use and how reliable owners find them over time.
    Score distribution
    â–¼
    â–¼
    <55-66-77-88-99-10
    Karcher SG 4/4
    the average steam cleaner
    â–¼ Worse than 99% of models
    Karcher SG 4/4 has a lower user score than the average steam cleaner (2.19 vs 8.004).
    2.19 vs 8
  • 33.8% worse value for money
    Karcher SG 4/4 offers worse value for money than the average steam cleaner (5.96 vs 8).
    5.96 vs 7.97
  • 2.85x less popular
    Karcher SG 4/4 is less popular than the average steam cleaner (2.64 vs 7.5).
    2.64 vs 7.51
  • 930 seconds longer heat-up time
    Heat-up time
    1,080 seconds
    â–¼ Worse than 99% of models
    Market range: <15 seconds – >540 seconds
    This steam cleaner has a longer heat-up time than the average steam cleaner (1080 seconds vs 150 seconds).
    1,080 seconds vs 150 seconds
  • 1 fewer steam levels
    Steam levels
    1
    â–¼ Worse than 54% of models
    Market range: <2 – >5
    This steam cleaner offers fewer steam levels than the average steam cleaner (1 vs 2).
    1 vs 2
  • No swivel / flexible floor head
    Swivel / flexible floor head
    no
    â–¼ Worse than 80% of models
    This steam cleaner does not have a swivel or flexible floor head, while the average steam cleaner has a swivel or flexible floor head.
  • No upholstery / fabric tool
    Upholstery / fabric tool
    no
    â–¼ Worse than 55% of models
    This steam cleaner does not have an upholstery or fabric tool, while the average steam cleaner has an upholstery or fabric tool.
  • 2.05x heavier
    Weight
    8 kg
    â–¼ Worse than 92% of models
    Market range: <1.18 kg – >7 kg
    40% heavier: this steam cleaner is heavier than the average steam cleaner (8 kg vs 3.91 kg).
    8 kg vs 3.91 kg

Graphic comparison of Karcher SG 4/4 and other products in the Steam Cleaners category

No results found

Third-party reviews

Based on 4 buyer reviews from online shops.
Reviews last updated: August 2026 · How we calculate this
Read buyer reviews on Amazon →

What customers like about Karcher SG 4/4?

  • Continuous and uninterrupted operation: Features a 2-tank system that allows the fresh water tank to be refilled without waiting for the boiler to cool down.
  • Powerful performance: Generates a strong 4 bar steam pressure that easily tackles neglected kitchen appliances, grease, and dirt.
  • Highly adjustable: Includes stepless variable steam control and the VapoHydro feature to adjust steam saturation (from dry steam to hot water).
  • Build quality: Designed with a robust, commercial-grade, and durable build.
  • User-friendly: Easy to operate with a convenient integrated accessory compartment and temperature display.

What customers dislike about Karcher SG 4/4?

  • Premium price point: Requires a higher initial investment compared to smaller, domestic steam cleaners.
  • Size and footprint: While compact for a commercial unit, it is heavier and bulkier to store and maneuver than entry-level consumer models.
  • Initial wait time: Despite the continuous refill system, the machine still requires a brief initial warm-up period.

Video reviews

Hands-on testing, unboxing, and real-world video evaluations

Compare Karcher SG 4/4 with other products in the Steam Cleaners category

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