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Tristar SZ-1918 Review | 52 Data compared

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  • Avg. price: ~£25
  • Suction power (AW): ?
  • Battery runtime: N/A minutes
  • Capacity: 0.9 L
  • Weight: 2.1 kg

Tristar SZ-1918 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.

6.0

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%

5.5

Technical Score

20.0%

8.1

User score

Good
5.5

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%

5.4

Performance

22.0%

4.7

Battery

18.0%

7.0

Filtration

14.0%

4.5

Attachments

10.0%

7.7

Design

8.0%

4.0

Smart features

Good
8.1

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%

7.6

User reviews

30.0%

9.3

Popularity

User score:
United Kingdom
amazon
3.8
(380)

(Reviews last updated: July 2026)

Excellent
  • 6.7
    Hard floors

    Score components:

    30.0%

    4.0

    Mopping support

    25.0%

    10

    Weight

    20.0%

    5.9

    Noise level (Min-Max)

    15.0%

    8.7

    Capacity

    10.0%

    5.0

    Power consumption

  • 5.8
    Pet homes

    Score components:

    30.0%

    4.0

    Mini motorized brush

    25.0%

    4.0

    Anti-tangle brush

    20.0%

    8.7

    Capacity

    15.0%

    5.9

    Noise level (Min-Max)

    10.0%

    10

    Weight

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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 Tristar SZ-1918 is a bagless, corded 2-in-1 stick vacuum cleaner that easily converts into a handheld unit. It features a 600W motor, multi-cyclone filtration technology, a 0.9-litre dust container capacity, a 5-metre power cord, and an adjustable telescopic tube. Key advantages include its lightweight design weighing 2.1 kg, its compact size for easy storage, Class A performance on hard floors, and energy-efficient operation. However, notable drawbacks include a relatively high noise level of 80 dB, poor performance on carpets (Class E/F), potential overheating during extended operation, and restricted movement due to its corded design.

Technical Specifications of vacuum cleaner Tristar SZ-1918

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%

5.4

Performance

22.0%

4.7

Battery

18.0%

7.0

Filtration

14.0%

4.5

Attachments

10.0%

7.7

Design

8.0%

4.0

Smart features

5.5
Tristar SZ-1918 has a technical score of 5.52 points, which is lower than 99.3% 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%

7.6

User reviews

30.0%

9.3

Popularity

User score:
United Kingdom
amazon
3.8
(380)

(Reviews last updated: July 2026)

8.1
Tristar SZ-1918 has a user score of 8.12 points, which is higher than 62.2% of vacuum cleaners.
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.
9.3
Tristar SZ-1918 has a popularity of 9.3 points, which is higher than 65.7% 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%

6.0

Overall score

40.0%

10

Price

7.2
Tristar SZ-1918 has a quality-to-price ratio of 7.2 points, which is lower than 95.7% 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

13.5 kPa
Tristar SZ-1918 has a suction pressure of 13.5 kPa, which is lower than that of 83.5% of vacuum cleaners.
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

18.5 L/s
Tristar SZ-1918 delivers 18.5 L/s airflow, which is lower than that of 81.1% of vacuum cleaners.
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

ac
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
Tristar SZ-1918 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.
Show more
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
Tristar SZ-1918 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

?
Show more
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

foam
Tristar SZ-1918 uses filter class foam, which is less advanced than the class used by 91.5% of vacuum cleaners and the same as the class used by 1.5% 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

?
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

no
Tristar SZ-1918 is not 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

0.9 L
Tristar SZ-1918 has a dust capacity of 0.9 L, which is smaller than that of 51.2% of vacuum cleaners and equal to that of 2.3% 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
Tristar SZ-1918 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

classic
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

?
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

no
Tristar SZ-1918 does not include 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
Tristar SZ-1918 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

no
Tristar SZ-1918 is not suitable for pet owners. 72% of vacuum cleaners handle pet hair well.
Show more
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

stick
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

2.1 kg
Tristar SZ-1918 weighs 2.1 kg, which is lower than the weight of 90.6% of vacuum cleaners and equal to that of 0.2% 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

yes
Tristar SZ-1918 offers 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

no
Tristar SZ-1918 does not stand 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

yes
Tristar SZ-1918 includes adjustable tube height. 47.4% of vacuum cleaners offer this ergonomic feature.
Show more
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
Tristar SZ-1918 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
Tristar SZ-1918 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
Tristar SZ-1918 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

no
Tristar SZ-1918 does not include 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
Tristar SZ-1918 does not support mopping. 3.7% of vacuum cleaners support this multi-function feature.

Tristar SZ-1918 vs the average vacuum cleaner

  • 40.3% lower weight
    Tristar SZ-1918 is lighter than the average vacuum cleaner (2.1 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

    Tristar SZ-1918 is lighter than the average vacuum cleaner (2.1 kg vs 3.52 kg).2.1 kg vs 3.52 kg
  • Adjustable tube height
    Tristar SZ-1918 has adjustable tube height, the average vacuum cleaner does not.
    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

    Tristar SZ-1918 has adjustable tube height, the average vacuum cleaner does not.
  • 6x cheaper
    Tristar SZ-1918 is cheaper than the average vacuum cleaner (£25 vs £150).
    Tristar SZ-1918 is cheaper than the average vacuum cleaner (£25 vs £150).£25 vs £150
  • 210 mm shorter body
    Tristar SZ-1918 is shorter than the average vacuum cleaner (900 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

    Tristar SZ-1918 is shorter than the average vacuum cleaner (900 mm vs 1110 mm).900 mm vs 1110 mm
  • 40.3% lower weight
    Tristar SZ-1918 is lighter than the average vacuum cleaner (2.1 kg vs 3.52 kg).
  • Adjustable tube height
    Tristar SZ-1918 has adjustable tube height, the average vacuum cleaner does not.
  • 210 mm shorter body
    Tristar SZ-1918 is shorter than the average vacuum cleaner (900 mm vs 1110 mm).

Total
Overall
Design
  • 6.5 kPa weaker suction
    Tristar SZ-1918 has lower suction pressure than the average vacuum cleaner (13.5 kPa vs 20 kPa).
  • Louder operation
    Tristar SZ-1918 is noisier than the average vacuum cleaner (80-80 dB vs 77-77 dB).
  • 9.3 L/s lower airflow
    Tristar SZ-1918 delivers lower airflow than the average vacuum cleaner (18.5 L/s vs 27.8 L/s).
  • 1 fewer speed level
    Tristar SZ-1918 offers fewer speed levels than the average vacuum cleaner (1 vs 2).
  • 1.5 m shorter power cord
    Tristar SZ-1918 has a shorter power cord than the average vacuum cleaner (5 m vs 6.5 m).
  • Not allergy-friendly
    Tristar SZ-1918 is not suitable for allergy sufferers, the average vacuum cleaner is.
  • Lower filter class
    Tristar SZ-1918 uses a lower filter class than the average vacuum cleaner (foam vs hepa).
  • 0.1 L smaller dust bin
    Tristar SZ-1918 has a smaller dust capacity than the average vacuum cleaner (0.9 L vs 1 L).
  • Not pet-hair friendly
    Tristar SZ-1918 is not suitable for pet owners, the average vacuum cleaner is.
  • No upholstery nozzle
    Tristar SZ-1918 does not include an upholstery nozzle, the average vacuum cleaner does.
  • No crevice nozzle
    Tristar SZ-1918 does not include a crevice nozzle, the average vacuum cleaner does.
  • Older release date
    Tristar SZ-1918 has an older release date than the average vacuum cleaner (2017 vs 2021).
    Released in July 2017.
  • 6.5 kPa weaker suction
    Tristar SZ-1918 has lower suction pressure than the average vacuum cleaner (13.5 kPa vs 20 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

    Tristar SZ-1918 has lower suction pressure than the average vacuum cleaner (13.5 kPa vs 20 kPa).13.5 kPa vs 20 kPa
  • Not pet-hair friendly
    Tristar SZ-1918 is not suitable for pet owners, the average vacuum cleaner is.
    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

    Tristar SZ-1918 is not suitable for pet owners, the average vacuum cleaner is.
  • Louder operation
    Tristar SZ-1918 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

    Tristar SZ-1918 is noisier than the average vacuum cleaner (80-80 dB vs 77-77 dB).80-80 dB vs 77-77 dB
  • 9.3 L/s lower airflow
    Tristar SZ-1918 delivers lower airflow than the average vacuum cleaner (18.5 L/s vs 27.8 L/s).
    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

    Tristar SZ-1918 delivers lower airflow than the average vacuum cleaner (18.5 L/s vs 27.8 L/s).18.5 L/s vs 27.8 L/s
  • Not allergy-friendly
    Tristar SZ-1918 is not suitable for allergy sufferers, the average vacuum cleaner is.
    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

    Tristar SZ-1918 is not suitable for allergy sufferers, the average vacuum cleaner is.
  • No upholstery nozzle
    Tristar SZ-1918 does not include an upholstery nozzle, the average vacuum cleaner does.
    What it is: A nozzle attachment shaped for cleaning fabric surfaces such as sofas, chairs, or mattresses.
    When it matters: When fabric chairs, sofas, or mattresses need regular cleaning instead of just floors.

    Importance: LOW

    Tristar SZ-1918 does not include an upholstery nozzle, the average vacuum cleaner does.
  • Lower filter class
    Tristar SZ-1918 uses a lower filter class than the average vacuum cleaner (foam vs hepa).
    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

    Tristar SZ-1918 uses a lower filter class than the average vacuum cleaner (foam vs hepa).foam vs hepa
  • 1.5 m shorter power cord
    Tristar SZ-1918 has a shorter power cord than the average vacuum cleaner (5 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

    Tristar SZ-1918 has a shorter power cord than the average vacuum cleaner (5 m vs 6.5 m).5 m vs 6.5 m
Total
Overall
Performance
Battery
Filtration
Attachments
Design

Graphic comparison of Tristar SZ-1918 and other vacuum cleaners

Attribute category
Attribute
No results found

Third-party reviews

United Kingdom
amazon
3.8
380 Reviews

(Reviews last updated: July 2026)

What customers like about Tristar SZ-1918?

  • Affordable purchase price offering good value for money
  • Strong suction power on hard floors (Class A dust pick-up)
  • Lightweight and compact design makes it easy to carry and store
  • Versatile 2-in-1 functionality easily converts into a handheld vacuum
  • More consistent power than cordless alternatives due to being mains-powered

What customers dislike about Tristar SZ-1918?

  • Short 5-meter power cord limits movement and requires frequent socket changes
  • Poor performance on high-pile or deep carpets
  • Small 0.9-liter dust container and filter fill up quickly
  • The motor is prone to overheating quickly during intensive cleaning sessions
  • Cheap plastic material and fragile build quality
  • Lacks an automatic cord rewinder or dedicated storage wall mount

Expert reviews

S
stofzuiger-informatie.nl
08/01/2026
Summary of the review
Top 3 Tristar Cordless Stick Vacuum Models 2026 - Best Vacuum Cleaner
(Translated)Show original

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