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Shark AZ3900UKT Review | 52 Data compared

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  • Avg. price in UK: ~£340
  • Avg. price in US: ~$450
  • Suction power (AW): ?
  • Battery runtime: N/A minutes
  • Capacity: 1.3 L
  • Weight: 7.72 kg

Shark AZ3900UKT review. Compare 52 technical specifications and user reviews to see how this product ranks in the Vacuum Cleaners category and whether it is worth buying.

7.6

Overall score

What it is: An overall evaluation of the vacuum cleaner's quality, based on technical analysis and user reviews.

When it matters: When you need a quick reference for identifying the best vacuum cleaners on the market.

Score components:

80.0%

7.6

Technical Score

20.0%

?

User score

Very good
7.6

Technical Score

What it is: An assessment of the vacuum cleaner's technical performance across six key areas: performance, battery and power supply, filtration, attachments, design, and smart features.

When it matters: When you want to compare vacuum cleaners by cleaning performance, specifications, and available features.

Score components:

28.0%

8.3

Performance

22.0%

5.7

Battery

18.0%

8.8

Filtration

14.0%

9.2

Attachments

10.0%

4.3

Design

8.0%

8.5

Smart features

Very good
?

User score

What it is: A rating that combines user reviews with the total number of reviews received by the vacuum cleaner.

When it matters: When you want to know how a vacuum cleaner performs in everyday use and how reliable owners find it over time.

Score components:

70.0%

?

User reviews

30.0%

?

Popularity

  • 4.6
    Hard floors

    Score components:

    30.0%

    4.0

    Mopping support

    25.0%

    1.0

    Weight

    20.0%

    5.9

    Noise level (Min-Max)

    15.0%

    10

    Capacity

    10.0%

    5.0

    Power consumption

  • 8.5
    Pet homes

    Score components:

    30.0%

    10

    Mini motorized brush

    25.0%

    10

    Anti-tangle brush

    20.0%

    10

    Capacity

    15.0%

    5.9

    Noise level (Min-Max)

    10.0%

    1.0

    Weight

  • No image
No image

Best prices in UK

    N/A~ £340

Best rankings

?

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

Verdict

The Shark Stratos AZ3900UKT is a corded upright vacuum featuring Anti-Hair Wrap Plus and Clean Sense IQ technology that automatically adjusts suction power based on dirt levels. It boasts a 1.3-litre capacity, 8-metre power cord, and a versatile DuoClean floorhead designed for both carpets and hard floors using its signature 'Lift-Away' detachable canister. While praised for its powerful 800W motor, Odour Neutraliser technology, and excellent pet hair pickup, some users find the unit relatively heavy at 6.5kg and note that the corded design limits portability compared to cordless alternatives.

Technical Specifications of vacuum cleaner Shark AZ3900UKT

Technical Score

What it is: An assessment of the vacuum cleaner's technical performance across six key areas: performance, battery and power supply, filtration, attachments, design, and smart features.

When it matters: When you want to compare vacuum cleaners by cleaning performance, specifications, and available features.

Score components:

28.0%

?

Performance

22.0%

?

Battery

18.0%

?

Filtration

14.0%

?

Attachments

10.0%

?

Design

8.0%

?

Smart features

7.6
Shark AZ3900UKT has a technical score of 7.57 points, which is higher than 75.8% of vacuum cleaners.
User score

What it is: A rating that combines user reviews with the total number of reviews received by the vacuum cleaner.

When it matters: When you want to know how a vacuum cleaner performs in everyday use and how reliable owners find it over time.

Score components:

70.0%

0.0

User reviews

30.0%

1.0

Popularity

?
Popularity
What it is: An indicator based on the number of reviews received by the vacuum cleaner.
When it matters: When you prefer a vacuum cleaner that has been chosen and reviewed by many other buyers.
1.0
Shark AZ3900UKT has a popularity of 1 points, which is lower than 60.8% of products in this category.
Ratio quality/price

What it is: An indicator that combines the vacuum cleaner's overall score with its price.

When it matters: When you are looking for a vacuum cleaner with a good balance between quality and price.

Score components:

60.0%

7.6

Overall score

40.0%

8.7

Price

7.9
Shark AZ3900UKT has a quality-to-price ratio of 7.9 points, which is higher than 49.1% of products in this category.
Suction power (AW)
What it is: A measure of usable suction output in air watts, combining airflow and pressure into one cleaning-power figure.
When it matters: When you want the clearest single number for overall cleaning power on carpets and stubborn debris.

Importance: HIGH

?
Suction power (kPa)
What it is: The maximum suction pressure the vacuum can generate, expressed in kilopascals.
When it matters: When you compare how strongly different vacuums can pull dirt from seams, rugs, and tight surfaces.

Importance: HIGH

?
Airflow
What it is: The volume of air the vacuum moves during operation, which helps indicate how effectively debris can be carried into the dust container.
When it matters: When you want better pickup of lighter debris such as dust, crumbs, and hair across larger floor areas.

Importance: HIGH

?
Motor type
What it is: The motor design used to drive suction, such as brushless or universal construction.
When it matters: When you care about motor durability, efficiency, and how modern the vacuum drive system is.

Importance: LOW

brushed
Power consumption
What it is: The amount of electrical power the vacuum draws while operating, measured in watts.
When it matters: When you want to limit electricity use or compare efficiency between vacuums with similar cleaning power.

Importance: LOW

600 W
Shark AZ3900UKT draws 600 W, which is lower than the power consumption of 43.7% of vacuum cleaners and equal to that of 7.8% of vacuum cleaners.
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Cordless
What it is: Indicates whether the vacuum can run without being connected to a power cable.
When it matters: When you want to move quickly between rooms, stairs, or cars without trailing a power cord.

Importance: MEDIUM

no
Shark AZ3900UKT does not work cordlessly. 49.6% of vacuum cleaners offer cordless operation.
Battery runtime
What it is: The maximum operating time the vacuum can deliver on a full charge in standard use.
When it matters: When you want to finish your normal cleaning routine on one charge.

Importance: HIGH

N/A
Charging time
What it is: The time required to recharge the battery from empty to full.
When it matters: When you need the vacuum ready again quickly after a short cleaning session.

Importance: MEDIUM

N/A
Battery capacity
What it is: The total amount of energy or charge the battery can store before recharging is needed.
When it matters: When you want a rough idea of how much stored energy the battery pack holds.

Importance: MEDIUM

N/A
Battery voltage
What it is: The nominal electrical voltage supplied by the battery pack.
When it matters: When you compare cordless models and want another clue about battery system strength.

Importance: LOW

N/A
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Filter class
What it is: The filtration standard or class used to describe how finely the vacuum filters outgoing air.
When it matters: When you care about capturing finer dust and keeping the exhaust air cleaner.

Importance: MEDIUM

hepa
Shark AZ3900UKT uses filter class hepa, which is more advanced than the class used by 16% of vacuum cleaners and the same as the class used by 46% of vacuum cleaners.
Minimum overall efficiency
What it is: The minimum particle retention efficiency implied by the stated filter grade.
When it matters: When you want a clearer view of how much fine particulate the filter grade can block at minimum.

Importance: MEDIUM

99.9%
Shark AZ3900UKT reaches 99.9% minimum overall efficiency, which is lower than that of 65.4% of vacuum cleaners and equal to that of 12.4% of vacuum cleaners.
Suitable for allergy sufferers
What it is: Indicates whether the filtration setup is strong enough to make the vacuum more appropriate for allergy-sensitive homes.
When it matters: When someone at home reacts badly to dust and you want a safer filtration setup.

Importance: MEDIUM

yes
Shark AZ3900UKT is suitable for allergy sufferers. 82.4% of vacuum cleaners are allergy-friendly.
Capacity
What it is: The amount of dust or debris the container or bag can hold before it needs to be emptied or replaced.
When it matters: When you want to empty the dust container less often during bigger cleaning jobs.

Importance: MEDIUM

1.3 L
Shark AZ3900UKT has a dust capacity of 1.3 L, which is larger than that of 58.6% of vacuum cleaners and equal to that of 1.1% of vacuum cleaners.
Bagless
What it is: Indicates whether the vacuum collects dirt in a reusable dust container instead of disposable bags.
When it matters: When you prefer not to buy replacement bags and want to empty a reusable bin instead.

Importance: LOW

yes
Shark AZ3900UKT uses a bagless design. 78.6% of vacuum cleaners use this setup.
Show more
Main brush type
What it is: The construction style of the main floor brush that makes primary contact with the surface being cleaned.
When it matters: When you need the floor head design to match your mix of carpets and hard floors.

Importance: LOW

soft roller
Roller type
What it is: The roller material or profile used to move across the floor and lift debris.
When it matters: When you want the contact surface to suit delicate floors, embedded dirt, or hair pickup better.

Importance: LOW

multi-surface
Anti-tangle brush
What it is: A brush design intended to reduce hair wrapping and tangling around the roller.
When it matters: When long hair regularly wraps around the brush and you want less manual cleaning.

Importance: LOW

yes
Shark AZ3900UKT includes an anti-tangle brush. 25.7% of vacuum cleaners include this feature.
Mini motorized brush
What it is: A small powered cleaning head intended for upholstery, stairs, and concentrated dirt or pet hair.
When it matters: When you clean sofas, stairs, or pet beds where a powered small head works better than a standard nozzle.

Importance: LOW

yes
Shark AZ3900UKT includes a mini motorized brush. 26.9% of vacuum cleaners include this attachment.
Suitable for pet owners
What it is: Indicates whether the vacuum is especially suited to homes where pet hair is a regular cleaning concern.
When it matters: When pet hair is one of the main reasons you are buying a vacuum in the first place.

Importance: MEDIUM

yes
Shark AZ3900UKT is suitable for pet owners. 72% of vacuum cleaners handle pet hair well.
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Vacuum type
What it is: Identifies the vacuum's overall form factor, such as stick, canister, upright, handheld, or wet-dry.
When it matters: When storage, maneuverability, and your usual cleaning jobs matter more than raw suction numbers.

Importance: LOW

upright
Weight
What it is: The total mass of the vacuum cleaner, which affects carrying comfort and ease of use.
When it matters: When you carry the vacuum upstairs, around the house, or use it for longer sessions.

Importance: MEDIUM

7.72 kg
Shark AZ3900UKT weighs 7.72 kg, which is greater than the weight of 95.1% of vacuum cleaners and equal to that of 0.1% of vacuum cleaners.
2-in-1 design
What it is: A design that allows the vacuum to be used in two form factors, typically as a stick unit and a handheld unit.
When it matters: When you want one machine to handle both floors and quick handheld jobs.

Importance: LOW

no
Shark AZ3900UKT does not offer a 2-in-1 design. 53% of vacuum cleaners offer this flexible format.
Self-standing
What it is: Indicates whether the vacuum can remain upright on its own without being leaned against support.
When it matters: When you want to pause mid-clean without laying the vacuum on the floor or wall.

Importance: LOW

yes
Shark AZ3900UKT stands on its own. 18.9% of vacuum cleaners offer this convenience.
Adjustable tube height
What it is: Indicates whether the tube length can be adjusted to change reach and handling height.
When it matters: When different users share the vacuum or you want a more comfortable reach.

Importance: LOW

no
Shark AZ3900UKT does not include adjustable tube height. 47.4% of vacuum cleaners offer this ergonomic feature.
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Auto suction adjustment
What it is: A function that changes suction automatically based on floor type or detected dirt load.
When it matters: When you want the vacuum to react by itself as you move between floor types or dirt levels.

Importance: LOW

yes
Shark AZ3900UKT supports automatic suction adjustment. 19.9% of vacuum cleaners support this feature.
Dust particle sensor
What it is: A sensor that monitors fine debris levels to inform or automate cleaning behavior.
When it matters: When you want extra feedback in dusty rooms instead of relying only on what you can see.

Importance: LOW

yes
Shark AZ3900UKT includes a dust particle sensor. 8% of vacuum cleaners include this feature.
LED display
What it is: A built-in illuminated display used to show status information such as battery, mode, or alerts.
When it matters: When you want cleaner status feedback for battery, mode, and warnings at a glance.

Importance: LOW

no
Shark AZ3900UKT does not include an LED display. 25.9% of vacuum cleaners include this interface feature.
Nozzle light
What it is: A light built into the cleaning head to improve visibility in dark areas under furniture or along edges.
When it matters: When you vacuum under beds, sofas, or dark corners where hidden dust is easy to miss.

Importance: LOW

yes
Shark AZ3900UKT includes a nozzle light. 43.4% of vacuum cleaners include this visibility feature.
Mopping support
What it is: Indicates whether the appliance can also wipe or mop surfaces in addition to vacuuming.
When it matters: When you want one appliance to handle both dry vacuuming and light floor wiping.

Importance: LOW

no
Shark AZ3900UKT does not support mopping. 3.7% of vacuum cleaners support this multi-function feature.

Shark AZ3900UKT vs the average vacuum cleaner

  • Includes mini motorized brush
    Shark AZ3900UKT includes a mini motorized brush, the average vacuum cleaner does not.
    What it is: A small powered cleaning head intended for upholstery, stairs, and concentrated dirt or pet hair.
    When it matters: When you clean sofas, stairs, or pet beds where a powered small head works better than a standard nozzle.

    Importance: LOW

    Shark AZ3900UKT includes a mini motorized brush, the average vacuum cleaner does not.
  • Includes anti-tangle brush
    Shark AZ3900UKT includes an anti-tangle brush, the average vacuum cleaner does not.
    What it is: A brush design intended to reduce hair wrapping and tangling around the roller.
    When it matters: When long hair regularly wraps around the brush and you want less manual cleaning.

    Importance: LOW

    Shark AZ3900UKT includes an anti-tangle brush, the average vacuum cleaner does not.
  • Automatic suction adjustment
    Shark AZ3900UKT supports automatic suction adjustment, the average vacuum cleaner does not.
    What it is: A function that changes suction automatically based on floor type or detected dirt load.
    When it matters: When you want the vacuum to react by itself as you move between floor types or dirt levels.

    Importance: LOW

    Shark AZ3900UKT supports automatic suction adjustment, the average vacuum cleaner does not.
  • Includes dust particle sensor
    Shark AZ3900UKT includes a dust particle sensor, the average vacuum cleaner does not.
    What it is: A sensor that monitors fine debris levels to inform or automate cleaning behavior.
    When it matters: When you want extra feedback in dusty rooms instead of relying only on what you can see.

    Importance: LOW

    Shark AZ3900UKT includes a dust particle sensor, the average vacuum cleaner does not.
  • Self-standing design
    Shark AZ3900UKT stands on its own, the average vacuum cleaner does not.
    What it is: Indicates whether the vacuum can remain upright on its own without being leaned against support.
    When it matters: When you want to pause mid-clean without laying the vacuum on the floor or wall.

    Importance: LOW

    Shark AZ3900UKT stands on its own, the average vacuum cleaner does not.
  • Includes nozzle light
    Shark AZ3900UKT includes a nozzle light, the average vacuum cleaner does not.
    What it is: A light built into the cleaning head to improve visibility in dark areas under furniture or along edges.
    When it matters: When you vacuum under beds, sofas, or dark corners where hidden dust is easy to miss.

    Importance: LOW

    Shark AZ3900UKT includes a nozzle light, the average vacuum cleaner does not.
  • 45 mm wider cleaning path
    Shark AZ3900UKT has a wider cleaning path than the average vacuum cleaner (305 mm vs 260 mm).
    What it is: The width of the area covered by the main floor head in a single forward pass.
    When it matters: When you clean large open floors and want to cover more area in fewer passes.

    Importance: LOW

    Shark AZ3900UKT has a wider cleaning path than the average vacuum cleaner (305 mm vs 260 mm).305 mm vs 260 mm
  • 1 more speed level
    Shark AZ3900UKT offers more speed levels than the average vacuum cleaner (3 vs 2).
    What it is: The number of selectable cleaning or suction levels available on the vacuum.
    When it matters: When you want to switch between gentle daily cleaning and stronger suction for heavier messes.

    Importance: LOW

    Shark AZ3900UKT offers more speed levels than the average vacuum cleaner (3 vs 2).3 vs 2
  • 1 more speed level
    Shark AZ3900UKT offers more speed levels than the average vacuum cleaner (3 vs 2).
  • 45 mm wider cleaning path
    Shark AZ3900UKT has a wider cleaning path than the average vacuum cleaner (305 mm vs 260 mm).
  • 1.5 m longer power cord
    Shark AZ3900UKT has a longer power cord than the average vacuum cleaner (8 m vs 6.5 m).
  • Includes mini motorized brush
    Shark AZ3900UKT includes a mini motorized brush, the average vacuum cleaner does not.
  • Includes anti-tangle brush
    Shark AZ3900UKT includes an anti-tangle brush, the average vacuum cleaner does not.
  • Self-standing design
    Shark AZ3900UKT stands on its own, the average vacuum cleaner does not.
  • Newer release date
    Shark AZ3900UKT has a newer release date than the average vacuum cleaner (2024 vs 2021).
  • Includes dust particle sensor
    Shark AZ3900UKT includes a dust particle sensor, the average vacuum cleaner does not.
  • Automatic suction adjustment
    Shark AZ3900UKT supports automatic suction adjustment, the average vacuum cleaner does not.
  • Includes nozzle light
    Shark AZ3900UKT includes a nozzle light, the average vacuum cleaner does not.

Total
Performance
Battery
Attachments
Design
Smart features
  • Louder operation
    Shark AZ3900UKT is noisier than the average vacuum cleaner (80-80 dB vs 77-77 dB).
  • 0.05 % lower filtration
    Shark AZ3900UKT has lower filtration efficiency than the average vacuum cleaner (99.9% vs 99.95%).
  • 2.19x higher weight
    Shark AZ3900UKT is heavier than the average vacuum cleaner (7.7 kg vs 3.52 kg).
  • No handheld conversion
    Shark AZ3900UKT does not have a 2-in-1 design, the average vacuum cleaner does.
  • 40 mm wider body
    Shark AZ3900UKT is wider than the average vacuum cleaner (305 mm vs 265 mm).
  • 70 mm taller body
    Shark AZ3900UKT is taller than the average vacuum cleaner (1180 mm vs 1110 mm).
  • 2.19x higher weight
    Shark AZ3900UKT is heavier than the average vacuum cleaner (7.7 kg vs 3.52 kg).
    What it is: The total mass of the vacuum cleaner, which affects carrying comfort and ease of use.
    When it matters: When you carry the vacuum upstairs, around the house, or use it for longer sessions.

    Importance: MEDIUM

    Shark AZ3900UKT is heavier than the average vacuum cleaner (7.7 kg vs 3.52 kg).7.72 kg vs 3.52 kg
  • No handheld conversion
    Shark AZ3900UKT does not have a 2-in-1 design, the average vacuum cleaner does.
    What it is: A design that allows the vacuum to be used in two form factors, typically as a stick unit and a handheld unit.
    When it matters: When you want one machine to handle both floors and quick handheld jobs.

    Importance: LOW

    Shark AZ3900UKT does not have a 2-in-1 design, the average vacuum cleaner does.
  • Louder operation
    Shark AZ3900UKT is noisier than the average vacuum cleaner (80-80 dB vs 77-77 dB).
    What it is: The operating sound range of the vacuum across its available modes, measured in decibels.
    When it matters: When you clean in apartments, around children, or at night and want a quieter machine.

    Importance: HIGH

    Shark AZ3900UKT is noisier than the average vacuum cleaner (80-80 dB vs 77-77 dB).80-80 dB vs 77-77 dB
  • 0.05 % lower filtration
    Shark AZ3900UKT has lower filtration efficiency than the average vacuum cleaner (99.9% vs 99.95%).
    What it is: The minimum particle retention efficiency implied by the stated filter grade.
    When it matters: When you want a clearer view of how much fine particulate the filter grade can block at minimum.

    Importance: MEDIUM

    Shark AZ3900UKT has lower filtration efficiency than the average vacuum cleaner (99.9% vs 99.95%).99.9 % vs 99.95 %
  • 40 mm wider body
    Shark AZ3900UKT is wider than the average vacuum cleaner (305 mm vs 265 mm).
    What it is: The side-to-side dimension of the vacuum body or main cleaning head.
    When it matters: When the vacuum must fit specific storage spaces or move around tight furniture layouts.

    Importance: LOW

    Shark AZ3900UKT is wider than the average vacuum cleaner (305 mm vs 265 mm).305 mm vs 265 mm
  • 2.27x more expensive
    Shark AZ3900UKT is more expensive than the average vacuum cleaner (£340 vs £150).
    Shark AZ3900UKT is more expensive than the average vacuum cleaner (£340 vs £150).£340 vs £150
  • 70 mm taller body
    Shark AZ3900UKT is taller than the average vacuum cleaner (1180 mm vs 1110 mm).
    What it is: The vertical size of the vacuum when measured in its assembled or standing form.
    When it matters: When upright storage height or fit inside cupboards matters in your home.

    Importance: LOW

    Shark AZ3900UKT is taller than the average vacuum cleaner (1180 mm vs 1110 mm).1180 mm vs 1110 mm
Total
Overall
Performance
Filtration
Design

Graphic comparison of Shark AZ3900UKT and other vacuum cleaners

Attribute category
Attribute
No results found

Third-party reviews

What customers like about Shark AZ3900UKT?

  • Exceptional suction power that performs deep cleaning on both carpets and hard floors
  • Highly effective pet hair removal with Anti Hair Wrap technology
  • Advanced automation via PowerDetect sensors that auto-adjust to floor types and edges
  • Versatile Powered Lift-Away design that easily converts for stairs, furniture, and cars
  • Convenient anti-odour cartridge system that leaves rooms smelling fresh
  • Excellent filtration with an anti-allergen complete seal

What customers dislike about Shark AZ3900UKT?

  • Noticeably heavy and bulky to manoeuvre, particularly for older users or multi-storey homes
  • Strong suction can cause a pull-forward effect that makes it tiring to hold back
  • Power cable is overly stiff, awkward to wrap up, and prone to splitting near the appliance end
  • Top-heavy design makes the unit tip over easily when stretching the hose or using the wand
  • The automated detect mode can occasionally glitch or lag when moving quickly onto rugs, requiring a restart

Expert reviews

T
techradar.com
20/07/2026
Summary of the review
Shark PowerDetect Upright vacuum review: a powerful, smart and versatile dust-buster
T
telegraph.co.uk
26/11/2025
Summary of the review
The 8 best upright vacuum cleaners for spotless carpets and hard floors
(Translated)Show original

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