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Shark NZ691UKTDB Review | 52 Data compared

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  • Avg. price: ~£180
  • Suction power (AW): ?
  • Battery runtime: N/A minutes
  • Capacity: 1.1 L
  • Weight: 6 kg

Shark NZ691UKTDB 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.

7.1

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%

7.1

Technical Score

20.0%

?

User score

Very good
7.1

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%

7.8

Performance

22.0%

5.5

Battery

18.0%

8.8

Filtration

14.0%

8.1

Attachments

10.0%

5.6

Design

8.0%

5.2

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

  • 5.1
    Hard floors

    Score components:

    30.0%

    4.0

    Mopping support

    25.0%

    3.9

    Weight

    20.0%

    5.9

    Noise level (Min-Max)

    15.0%

    10

    Capacity

    10.0%

    3.0

    Power consumption

  • 7.0
    Pet homes

    Score components:

    30.0%

    4.0

    Mini motorized brush

    25.0%

    10

    Anti-tangle brush

    20.0%

    10

    Capacity

    15.0%

    5.9

    Noise level (Min-Max)

    10.0%

    3.9

    Weight

  • No image
No image

Best prices in UK

    N/A~ £180

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 NZ691UKTDB is a mains-powered, bagless corded upright vacuum cleaner in an exclusive black finish, powered by a 750W motor and featuring a 1.1-litre dust capacity. Main characteristics include an 8-metre power cable, an anti-allergen complete seal trapping 99.9% of dust, and dual floor modes with handle controls to easily transition between carpets and hard floors. Prominent pros highlight its signature Anti Hair Wrap technology that actively clears hair from the brush-roll, its Lift-Away feature that converts the unit into a lightweight portable cleaner for stairs, and a specialised pet tool with an air-driven brush roll. On the downside, cons include its heavy overall upright weight of up to 7.76 kg (though lighter in handheld mode) and a maximum noise level of 80 dB, which some users find loud.

Technical Specifications of vacuum cleaner Shark NZ691UKTDB

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

7.1
Shark NZ691UKTDB has a technical score of 7.09 points, which is higher than 59.9% 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 NZ691UKTDB 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%

7.1

Overall score

40.0%

9.6

Price

7.8
Shark NZ691UKTDB has a quality-to-price ratio of 7.8 points, which is lower than 51% 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

?
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

750 W
Shark NZ691UKTDB draws 750 W, which is higher than the power consumption of 69.8% of vacuum cleaners and equal to that of 7.1% 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 NZ691UKTDB 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

?
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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 NZ691UKTDB 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 NZ691UKTDB 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 NZ691UKTDB 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

1.1 L
Shark NZ691UKTDB has a dust capacity of 1.1 L, which is larger than that of 54.6% of vacuum cleaners and equal to that of 0.9% 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 NZ691UKTDB uses a bagless design. 78.6% of vacuum cleaners use this setup.
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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

roll brush
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

bristled
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 NZ691UKTDB 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

no
Shark NZ691UKTDB does not include 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 NZ691UKTDB 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

6 kg
Shark NZ691UKTDB weighs 6 kg, which is greater than the weight of 80.6% of vacuum cleaners and equal to that of 0.8% 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 NZ691UKTDB 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 NZ691UKTDB 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 NZ691UKTDB 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

no
Shark NZ691UKTDB does not support 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

no
Shark NZ691UKTDB does not include 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 NZ691UKTDB 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 NZ691UKTDB 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 NZ691UKTDB does not support mopping. 3.7% of vacuum cleaners support this multi-function feature.

Shark NZ691UKTDB vs the average vacuum cleaner

  • Includes anti-tangle brush
    Shark NZ691UKTDB 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 NZ691UKTDB includes an anti-tangle brush, the average vacuum cleaner does not.
  • Self-standing design
    Shark NZ691UKTDB 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 NZ691UKTDB stands on its own, the average vacuum cleaner does not.
  • Includes nozzle light
    Shark NZ691UKTDB 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 NZ691UKTDB includes a nozzle light, the average vacuum cleaner does not.
  • 1.5 m longer power cord
    Shark NZ691UKTDB has a longer power cord than the average vacuum cleaner (8 m vs 6.5 m).
    What it is: The physical length of the mains cable supplied for corded use.
    When it matters: When you clean larger rooms with a corded model and want fewer outlet changes.

    Importance: LOW

    Shark NZ691UKTDB has a longer power cord than the average vacuum cleaner (8 m vs 6.5 m).8 m vs 6.5 m
  • 32.1 mm narrower body
    Shark NZ691UKTDB is narrower than the average vacuum cleaner (232.9 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 NZ691UKTDB is narrower than the average vacuum cleaner (232.9 mm vs 265 mm).232.9 mm vs 265 mm
  • 25 mm wider cleaning path
    Shark NZ691UKTDB has a wider cleaning path than the average vacuum cleaner (285 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 NZ691UKTDB has a wider cleaning path than the average vacuum cleaner (285 mm vs 260 mm).285 mm vs 260 mm
  • Newer release date
    Shark NZ691UKTDB has a newer release date than the average vacuum cleaner (2024 vs 2021).
    What it is: The date when the vacuum model was first announced or introduced to the market.
    When it matters: When you want a newer model with more recent battery, motor, or feature updates.

    Importance: LOW

    Shark NZ691UKTDB has a newer release date than the average vacuum cleaner (2024 vs 2021).2024 vs 2021
  • 25 mm wider cleaning path
    Shark NZ691UKTDB has a wider cleaning path than the average vacuum cleaner (285 mm vs 260 mm).
  • 1.5 m longer power cord
    Shark NZ691UKTDB has a longer power cord than the average vacuum cleaner (8 m vs 6.5 m).
  • Includes anti-tangle brush
    Shark NZ691UKTDB includes an anti-tangle brush, the average vacuum cleaner does not.
  • Self-standing design
    Shark NZ691UKTDB stands on its own, the average vacuum cleaner does not.
  • 32.1 mm narrower body
    Shark NZ691UKTDB is narrower than the average vacuum cleaner (232.9 mm vs 265 mm).
  • Newer release date
    Shark NZ691UKTDB has a newer release date than the average vacuum cleaner (2024 vs 2021).
  • Includes nozzle light
    Shark NZ691UKTDB includes a nozzle light, the average vacuum cleaner does not.

Total
Performance
Battery
Attachments
Design
Smart features
  • Louder operation
    Shark NZ691UKTDB is noisier than the average vacuum cleaner (80-80 dB vs 77-77 dB).
  • No cyclonic technology
    Shark NZ691UKTDB does not use cyclonic technology, the average vacuum cleaner does.
  • 150 W higher power draw
    Shark NZ691UKTDB draws more power than the average vacuum cleaner (750 W vs 600 W).
  • 0.05 % lower filtration
    Shark NZ691UKTDB has lower filtration efficiency than the average vacuum cleaner (99.9% vs 99.95%).
  • No handheld conversion
    Shark NZ691UKTDB does not have a 2-in-1 design, the average vacuum cleaner does.
  • 70.5% higher weight
    Shark NZ691UKTDB is heavier than the average vacuum cleaner (6 kg vs 3.52 kg).
  • 36 mm deeper body
    Shark NZ691UKTDB is deeper than the average vacuum cleaner (301 mm vs 265 mm).
  • No handheld conversion
    Shark NZ691UKTDB 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 NZ691UKTDB does not have a 2-in-1 design, the average vacuum cleaner does.
  • Louder operation
    Shark NZ691UKTDB 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 NZ691UKTDB is noisier than the average vacuum cleaner (80-80 dB vs 77-77 dB).80-80 dB vs 77-77 dB
  • 70.5% higher weight
    Shark NZ691UKTDB is heavier than the average vacuum cleaner (6 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 NZ691UKTDB is heavier than the average vacuum cleaner (6 kg vs 3.52 kg).6 kg vs 3.52 kg
  • No cyclonic technology
    Shark NZ691UKTDB does not use cyclonic technology, the average vacuum cleaner does.
    What it is: A dust separation system that spins incoming air to help keep suction more stable as debris builds up.
    When it matters: When you want suction to stay steadier as dust builds up in the bin.

    Importance: LOW

    Shark NZ691UKTDB does not use cyclonic technology, the average vacuum cleaner does.
  • 0.05 % lower filtration
    Shark NZ691UKTDB 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 NZ691UKTDB has lower filtration efficiency than the average vacuum cleaner (99.9% vs 99.95%).99.9 % vs 99.95 %
  • 150 W higher power draw
    Shark NZ691UKTDB draws more power than the average vacuum cleaner (750 W vs 600 W).
    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

    Shark NZ691UKTDB draws more power than the average vacuum cleaner (750 W vs 600 W).750 W vs 600 W
  • 36 mm deeper body
    Shark NZ691UKTDB is deeper than the average vacuum cleaner (301 mm vs 265 mm).
    What it is: The front-to-back measurement of the vacuum body or main assembly.
    When it matters: When front-to-back size affects where the vacuum can be stored or parked.

    Importance: LOW

    Shark NZ691UKTDB is deeper than the average vacuum cleaner (301 mm vs 265 mm).301 mm vs 265 mm
Total
Performance
Filtration
Design

Graphic comparison of Shark NZ691UKTDB and other vacuum cleaners

Attribute category
Attribute
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Third-party reviews

What customers like about Shark NZ691UKTDB?

  • Excellent suction power that effectively lifts deep-embedded dirt and refreshes carpet pile
  • Highly efficient at picking up pet hair and dander without causing tangles
  • Lift-Away mode makes it highly versatile and lightweight for cleaning stairs and high corners
  • Anti-Hair Wrap technology successfully prevents long hair from wrapping around the brush roll
  • LED headlights on the floor head provide excellent visibility in dark spots or under furniture
  • Simple and straightforward to assemble, empty, and maintain

What customers dislike about Shark NZ691UKTDB?

  • Strong suction can make the vacuum heavy and difficult to push/glide across deep-pile carpets
  • The 8-metre power cable is noted by some users to be quite stiff and awkward to wind up for storage
  • Some components and plastics can feel slightly cheap or less durable compared to premium rivals
  • Requires frequent filter cleaning to maintain peak suction performance due to the pre-motor filter placement

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