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Scored using Portable Vacuums Methodology v1.0
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Products in this category are scored under Frontum Portable Vacuums Methodology v1.0: technical specifications plus authentic consumer ratings, with 0% commercial bias.
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BLACK+DECKER DVC320B21 Review | 53 Data compared

Avg. price:~£80Suction pressure:?Capacity:0.12 LWeight:0.59 kgRuntime:24 minHEPA filter:no

BLACK+DECKER DVC320B21 Review: Compare 53 technical specifications and user reviews to see how this product ranks in the Portable Vacuums category and whether it is worth buying.

BLACK+DECKER DVC320B21
6.9/10

Overall score

Score
6.9/ 10
✕
What it is
An overall evaluation of products in the Portable 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 Portable Vacuums category.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 74% of models
Score components

80%

6.6

Technical score

20%

8.1

User score

â–¼Worse than 74% of portable vacuums
7.1

Value for money

Value for money
7.1/ 10
✕
What it is
An indicator that combines the portable vacuum cleaner's overall score with its price.
When it matters
When you are looking for a portable vacuum cleaner with a good balance between quality and price.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 82% of models
Score components

70%

6.9

Overall score

30%

7.5

Price

â–¼Worse than 82%
6.6

Technical score

Technical score
6.6/ 10
✕
What it is
An assessment of the portable vacuum cleaner’s technical performance across six key areas: performance, battery, filtration, attachments, design, and smart features.
When it matters
When you want to compare products in the Portable Vacuums category by technical performance, specifications, and available features.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 74% of models
Score components

30%

6.4

Performance

30%

5.9

Filtration

24%

7.2

Battery

10%

7.5

Attachments

3%

6.4

Design

3%

7.2

Smart features

â–¼Worse than 74%
8.1

User score

User score
8.1/ 10
✕
What it is
A rating that combines user reviews with the total review volume for products in the Portable Vacuums category.
When it matters
When you want to know how products in the Portable Vacuums category perform in everyday use and how reliable owners find them over time.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 65% of models
Score components

70%

8.6

User ratings

30%

6.9

Number of reviews

Based on ratings from across the web.
â–²Better than 65%
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Where to buy
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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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Technical Specifications of portable vacuum cleaner BLACK+DECKER DVC320B21

Technical score
Technical score
6.6/ 10
✕
What it is
An assessment of the portable vacuum cleaner’s technical performance across six key areas: performance, battery, filtration, attachments, design, and smart features.
When it matters
When you want to compare products in the Portable Vacuums category by technical performance, specifications, and available features.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 74% of models
Score components:

30%

6.4

Performance

30%

5.9

Filtration

24%

7.2

Battery

10%

7.5

Attachments

3%

6.4

Design

3%

7.2

Smart features

6.6
User score
User score
8.1/ 10
✕
What it is
A rating that combines user reviews with the total review volume for products in the Portable Vacuums category.
When it matters
When you want to know how products in the Portable Vacuums category perform in everyday use and how reliable owners find them over time.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 65% of models
Score components

70%

8.6

User ratings

30%

6.9

Number of reviews

Based on ratings from across the web.
8.1
Popularity
Popularity
6.9/ 10
✕
What it is
An indicator based on the number of reviews received by products in the Portable Vacuums category.
When it matters
When you prefer products in the Portable Vacuums 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 51% of models
Popularity:
BLACK+DECKER DVC320B21 has a popularity score of 6.9 points, which is higher than 48.9% of products in this category.
6.9
Value for money
Value for money
7.1/ 10
✕
What it is
An indicator that combines the portable vacuum cleaner's overall score with its price.
When it matters
When you are looking for a portable vacuum cleaner with a good balance between quality and price.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 82% of models
Score components:

70%

6.9

Overall score

30%

7.5

Price

7.1
Cyclonic technology
yes
This portable vacuum cleaner uses cyclonic technology. 34.8% of vacuum cleaners use this filtration approach.
Wet & dry
no
This portable vacuum cleaner does not support wet-and-dry cleaning. 32.1% of portable vacuums have this feature.
Rated motor power
24 W
Market range: <0 W – >200 W
This portable vacuum cleaner has a rated motor power of 24 W, which is lower than that of 89% of portable vacuums and equal to that of 1.2% of portable vacuums.
Suction pressure
?
Suction power
35 AW
Market range: <0 AW – >100 AW
This portable vacuum cleaner has a suction power of 35 AW, which is higher than that of 64.1% of vacuum cleaners and equal to that of 9.4% of vacuum cleaners.
Show more
Battery energy
24 Wh
Market range: <0 Wh – >50 Wh
This portable vacuum cleaner has a battery energy capacity of 24 Wh, which is greater than that of 55% of portable vacuums and equal to that of 7% of portable vacuums.
Cordless
yes
This portable vacuum cleaner works cordlessly. 93.5% of vacuum cleaners offer cordless operation.
Battery type
Li-ion
Battery voltage
12 V
Market range: <5 V – >25 V
This portable vacuum cleaner uses a battery voltage of 12 V, which is higher than that of 50.6% of vacuum cleaners and equal to that of 25% of vacuum cleaners.
Battery capacity
2000 mAh
Market range: <1.5k mAh – >2.5k mAh
This portable vacuum cleaner has a battery capacity of 2000 mAh, which is larger than that of 21.6% of vacuum cleaners and equal to that of 48.5% of vacuum cleaners.
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HEPA filter
no
This portable vacuum cleaner does not include a HEPA filter. 57.1% of portable vacuums have this feature.
Washable filter
yes
This portable vacuum cleaner includes a washable filter. 96.2% of vacuum cleaners include this maintenance-friendly feature.
Capacity
0.12 L
Market range: <0 L – >1 L
This portable vacuum cleaner has a dust capacity of 0.12 L, which is smaller than that of 84.8% of vacuum cleaners and equal to that of 2.7% of vacuum cleaners.
Transparent bin
yes
This portable vacuum cleaner includes a transparent dustbin. This feature is present on 89.7% of portable vacuums.
Number of filtration stages
2
Market range: <1 – >6
This portable vacuum cleaner has 2 filtration stages, which is more than 18.4% of portable vacuums and equal to 60.5% of portable vacuums.
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Extension tube
no
This portable vacuum cleaner does not include an extension tube. 29.9% of portable vacuums have this feature.
Soft dusting brush
yes
This portable vacuum cleaner includes a soft dusting brush. 80.4% of vacuum cleaners include this attachment.
Flat crevice tool
yes
This portable vacuum cleaner includes a flat crevice tool. This feature is present on 89.7% of portable vacuums.
Upholstery tool
no
This portable vacuum cleaner does not include an upholstery tool. 27.2% of portable vacuums have this feature.
Mini motorized brush
no
This portable vacuum cleaner does not include a mini motorized brush. 12% of vacuum cleaners include this attachment.
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Width
45 cm
Depth
15 cm
Height
15 cm
Weight
0.59 kg
Market range: <0 kg – >2 kg
This portable vacuum cleaner weighs 0.59 kg, which is less than 77.2% of vacuum cleaners and equal to 0.5% of vacuum cleaners.
Self-standing design
no
This portable vacuum cleaner does not have a self-standing design. 1.6% of portable vacuums have this feature.
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LED light
no
This portable vacuum cleaner does not include an LED light. 17.9% of portable vacuums have this feature.
Auto suction adjustment
no
This portable vacuum cleaner does not support automatic suction adjustment. 1.1% of vacuum cleaners support this feature.
Display type
LED
This portable vacuum cleaner has a display. This feature is present on 80.4% of portable vacuums.
Filter replacement indicator
no
This portable vacuum cleaner does not include a filter replacement indicator. 3.3% of portable vacuums have this feature.

BLACK+DECKER DVC320B21 vs the average portable vacuum

246810TotalPerformanceBatteryFiltrationAttachmentsDesignSmart features
  • Uses cyclonic technology
    This portable vacuum cleaner uses cyclonic technology, the average portable vacuum does not.
  • 1 more speed levels
    This portable vacuum cleaner offers more speed levels than the average portable vacuum (2 vs 1).
    2 vs 1
  • Includes a charging dock
    This portable vacuum cleaner includes a charging dock, while the average portable vacuum does not.
  • 10 AW stronger suction
    This portable vacuum cleaner has higher suction power than the average portable vacuum (35 AW vs 25 AW).
    35 AW vs 25 AW
  • 4 min longer runtime
    This portable vacuum cleaner runs longer per charge than the average portable vacuum (24 min vs 20 min).
    24 min vs 20 min
  • 21.3% lighter
    40% lighter: this portable vacuum cleaner is lighter than the average portable vacuum (0.6 kg vs 0.75 kg).
    0.59 kg vs 0.75 kg
  • 81 L/min higher airflow rate
    This portable vacuum cleaner has a higher airflow rate than the average portable vacuum (1053 L/min vs 972 L/min).
    1,053 L/min vs 972 L/min
  • 0.4 dB lower operating noise
    This portable vacuum cleaner operates more quietly than the average portable vacuum (74.6 dB vs 75 dB).
    74.6 dB vs 75 dB
  • 1% higher user score
    User score
    8.1/ 10
    ✕
    What it is
    A rating that combines user reviews with the total review volume for products in the Portable Vacuums category.
    When it matters
    When you want to know how products in the Portable Vacuums 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
    BLACK+DECKER DVC320B21
    the average portable vacuum
    BLACK+DECKER DVC320B21 has a higher user score than the average portable vacuum (8.08 vs 8.000).
    8.08 vs 8
  • Uses cyclonic technology
    This portable vacuum cleaner uses cyclonic technology, the average portable vacuum does not.
  • 1 more speed levels
    This portable vacuum cleaner offers more speed levels than the average portable vacuum (2 vs 1).
    2 vs 1
  • 10 AW stronger suction
    This portable vacuum cleaner has higher suction power than the average portable vacuum (35 AW vs 25 AW).
    35 AW vs 25 AW
  • 81 L/min higher airflow rate
    This portable vacuum cleaner has a higher airflow rate than the average portable vacuum (1053 L/min vs 972 L/min).
    1,053 L/min vs 972 L/min
  • 0.4 dB lower operating noise
    This portable vacuum cleaner operates more quietly than the average portable vacuum (74.6 dB vs 75 dB).
    74.6 dB vs 75 dB
  • Includes a charging dock
    This portable vacuum cleaner includes a charging dock, while the average portable vacuum does not.
  • 4 min longer runtime
    This portable vacuum cleaner runs longer per charge than the average portable vacuum (24 min vs 20 min).
    24 min vs 20 min
  • 2 Wh more battery energy
    This portable vacuum cleaner stores more battery energy than the average portable vacuum (24 Wh vs 22 Wh).
    24 Wh vs 22 Wh
  • 0.9 V higher battery voltage
    This portable vacuum cleaner has a higher battery voltage than the average portable vacuum (12 V vs 11.1 V).
    12 V vs 11.1 V
  • 21.3% lighter
    40% lighter: this portable vacuum cleaner is lighter than the average portable vacuum (0.6 kg vs 0.75 kg).
    0.59 kg vs 0.75 kg
  • 2 years newer
    This portable vacuum cleaner was released more recently than the average portable vacuum.
    2,022 vs 2,021
  • Does not include a HEPA filter
    This portable vacuum cleaner does not include a HEPA filter, while the average portable vacuum does.
  • 96 W less motor power
    This portable vacuum cleaner has a less powerful motor than the average portable vacuum (24 W vs 120 W).
    24 W vs 120 W
  • 0.28 L smaller dust capacity
    This portable vacuum cleaner has a smaller dust capacity than the average portable vacuum (0.1 L vs 0.4 L).
    0.12 L vs 0.4 L
  • 2.13x more external volume
    This portable vacuum cleaner has a larger external volume than the average portable vacuum (10125 cm³ vs 4748 cm³).
    10,125 cm³ vs 4,748 cm³
  • 77.8% more expensive
    BLACK+DECKER DVC320B21 is more expensive than the average portable vacuum (£80 vs £45).
    £80 vs £45
  • 3.5 min shorter turbo runtime
    This portable vacuum cleaner offers shorter turbo runtime than the average portable vacuum (11 min vs 14.5 min).
    11 min vs 14.5 min
  • 9.3% worse value for money
    BLACK+DECKER DVC320B21 offers worse value for money than the average portable vacuum (7.07 vs 7.7).
    7.07 vs 7.72
  • 77.8% more expensive
    BLACK+DECKER DVC320B21 is more expensive than the average portable vacuum (£80 vs £45).
    £80 vs £45
  • 9.3% worse value for money
    BLACK+DECKER DVC320B21 offers worse value for money than the average portable vacuum (7.07 vs 7.7).
    7.07 vs 7.72
  • 96 W less motor power
    This portable vacuum cleaner has a less powerful motor than the average portable vacuum (24 W vs 120 W).
    24 W vs 120 W
  • 3.5 min shorter turbo runtime
    This portable vacuum cleaner offers shorter turbo runtime than the average portable vacuum (11 min vs 14.5 min).
    11 min vs 14.5 min
  • Does not include a HEPA filter
    This portable vacuum cleaner does not include a HEPA filter, while the average portable vacuum does.
  • 0.28 L smaller dust capacity
    This portable vacuum cleaner has a smaller dust capacity than the average portable vacuum (0.1 L vs 0.4 L).
    0.12 L vs 0.4 L
  • 2.13x more external volume
    This portable vacuum cleaner has a larger external volume than the average portable vacuum (10125 cm³ vs 4748 cm³).
    10,125 cm³ vs 4,748 cm³

Expert reviews

In-depth analysis and verdict from leading tech publications

G
guide-aspirateur.net
17/03/2023
Summary of the review
BLACK+DECKER Handheld Vacuum Cleaner Review and Test
(Translated)Show original

Third-party reviews

Based on ratings from across the web.
Reviews last updated: July 2026 · How we calculate this

What we like about BLACK+DECKER DVC320B21

  • Lightweight and highly portable, weighing just 0.9 kg
  • Slim, sleek, and aesthetically pleasing ergonomic design
  • Versatile wet and dry cleaning capabilities with a washable filter
  • Consistent performance driven by an efficient brushless motor
  • Decent maximum runtime of up to 24 minutes on the lowest suction setting
  • Compact form factor making it ideal for tight spaces like sofas or car interiors
  • Convenient dedicated charging base/station for hassle-free storage

What we don't like about BLACK+DECKER DVC320B21

  • Notably high noise levels (80 dB), especially when used on the high speed setting
  • Relatively short battery life of only 11 minutes when operating at full power
  • Small dust bowl capacity which requires frequent emptying during larger tasks
  • Perceived by some users as being slightly expensive or overpriced compared to basic models

Verdict

The BLACK+DECKER Dustbuster Slim DVC320B21 is a lightweight 12V cordless handheld vacuum featuring a high-performance digital brushless motor, a 24Wh/35Wh lithium-ion battery, and a dual-speed cyclonic system that provides up to 35 Air Watts of suction power. Key advantages include its ultra-slim 600-gram ergonomic design for tight spaces, a hygienic one-touch empty 120ml transparent dustbowl, washable components, and a versatile charging base with an intelligent, eco-friendly energy-saving system that delivers a runtime of up to 24 minutes on low or 11 minutes on high. However, its downsides include a relatively small 120ml dustbin capacity requiring frequent emptying, a moderate noise level of up to 80 dB on high speed, and a lengthy 4-hour recharge time.

Compare BLACK+DECKER DVC320B21 with other portable vacuum cleaners

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