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Mathematical & Unbiased Scoring
Products in this category are scored under Frontum Air Purifiers Methodology v1.0: technical specifications plus authentic consumer ratings, with 0% commercial bias.
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YIJU SY-702 Review | 45 Data compared

Avg. price:~£35Max. CADR:150 m³/hMaximum room area:20 m²Maximum noise level:47 dBHEPA filter:yesWeight:1.7 kg

YIJU SY-702 Review: Compare 45 technical specifications and user reviews to see how this product ranks in the Air Purifiers category and whether it is worth buying.

5.7/10

Overall score

Score
5.7/ 10
✕
What it is
An overall evaluation of products in the Air Purifiers category, based on technical analysis and user reviews.
When it matters
When you need a quick reference for identifying the best products in the Air Purifiers category.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 90% of models
Score components

80%

5.7

Technical score

20%

?

User score

â–¼Worse than 90% of air purifiers
7.0

Value for money

Value for money
7.0/ 10
✕
What it is
An indicator that combines the overall score of products in the Air Purifiers category with their prices.
When it matters
When you are comparing products in the Air Purifiers category and want a good balance between quality and price.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 85% of models
Score components

70%

5.7

Overall score

30%

10

Price

â–¼Worse than 85%
5.7

Technical score

Technical score
5.7/ 10
✕
What it is
An assessment of technical performance for products in the Air Purifiers category across these key areas: Performance, Features, Design.
When it matters
When you want to compare products in the Air Purifiers category by technical performance, specifications, and available features.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 80% of models
Score components

50%

3.8

Performance

40%

7.6

Features

10%

8.1

Design

â–¼Worse than 80%
?

User score

User score
8.0/ 10
✕
What it is
A rating that combines user reviews with the total review volume for products in the Air Purifiers category.
When it matters
When you want to know how products in the Air Purifiers 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 68% of models
Score components

70%

?

User ratings

30%

?

Number of reviews

  • No image
No image
Best prices
    N/A~ £35
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 air purifier YIJU SY-702

Technical score
Technical score
5.7/ 10
✕
What it is
An assessment of technical performance for products in the Air Purifiers category across these key areas: Performance, Features, Design.
When it matters
When you want to compare products in the Air Purifiers category by technical performance, specifications, and available features.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 80% of models
Score components:

50%

3.8

Performance

40%

7.6

Features

10%

8.1

Design

5.7
User score
User score
8.0/ 10
✕
What it is
A rating that combines user reviews with the total review volume for products in the Air Purifiers category.
When it matters
When you want to know how products in the Air Purifiers 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 68% of models
Score components

70%

?

User ratings

30%

?

Number of reviews

?
Popularity
Popularity
1.0/ 10
✕
What it is
An indicator based on the number of reviews received by products in the Air Purifiers category.
When it matters
When you prefer products in the Air Purifiers 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 99% of models
Popularity:
YIJU SY-702 has a popularity score of 1 point, which is lower than 84.7% of products in this category.
1.0
Value for money
Value for money
7.0/ 10
✕
What it is
An indicator that combines the overall score of products in the Air Purifiers category with their prices.
When it matters
When you are comparing products in the Air Purifiers category and want a good balance between quality and price.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 85% of models
Score components:

70%

5.7

Overall score

30%

10

Price

7.0
Power
16 W
Market range: <10 W – >68 W
This air purifier has a power output of 16 W, which is lower than that of 83.4% of air purifiers and the same as that of 1.1% of air purifiers.
Max. CADR
150 m³/h
Market range: <100 m³/h – >515 m³/h
This air purifier delivers a CADR of 150 m³/h, which is lower than that of 75.2% of air purifiers and the same as that of 3.1% of air purifiers.
Maximum room area
20 m²
Market range: <20 m² – >130 m²
This air purifier covers up to 20 m², which is smaller than 86.2% of air purifiers and the same as 3.5% of air purifiers.
N. of speeds
3
Market range: <3 – >5
This air purifier offers 3 fan speeds, which is more than 6.7% of air purifiers and the same as 48.6% of air purifiers.
Maximum noise level
47 dB
Market range: <32 dB – >61 dB
This air purifier reaches 47 dB at maximum speed, which is quieter than 83.5% of air purifiers and the same as 1.2% of air purifiers.
Show more
Air quality indicator
no
This air purifier does not have an air-quality indicator. This feature is present on 65.4% of air purifiers.
Continuous purification
yes
This air purifier supports continuous purification. This feature is present on 86.3% of air purifiers.
Auto mode
no
This air purifier does not have auto mode. This feature is present on 67% of air purifiers.
Timer
yes
This air purifier has a timer. This feature is present on 75% of air purifiers.
Maximum timer
8 hours
Market range: <8 hours – >24 hours
This air purifier features a maximum timer of 8 hours, which is longer than that of 5.5% of air purifiers and the same as that of 57.8% of air purifiers.
Show more
Color
black
Material
plastic
Display
yes
This air purifier has a display. This feature is present on 51.1% of air purifiers.
Display position
front
Control type
touch
Show more

YIJU SY-702 vs the average air purifier

246810TotalPerformanceFeaturesDesign
  • 6 dB lower maximum noise level
    This air purifier runs quieter at maximum speed than the average air purifier (47 dB vs 53 dB).
    47 dB vs 53 dB
  • Has a child lock
    This air purifier has a child lock; the average air purifier does not.
  • Supports 360° purification
    This air purifier supports 360° purification; the average air purifier does not.
  • 62.8% lower weight
    This air purifier is lighter than the average air purifier (1.7 kg vs 4.57 kg).
    1.7 kg vs 4.57 kg
  • Has an ionizer
    This air purifier has an ionizer; the average air purifier does not.
  • 12.3 cm narrower width
    This air purifier is narrower than the average air purifier (15 cm vs 27.3 cm).
    15 cm vs 27.3 cm
  • 28 cm shorter height
    This air purifier has a lower height than the average air purifier (22 cm vs 50 cm).
    22 cm vs 50 cm
  • 7 cm shallower depth
    This air purifier is shallower than the average air purifier (15 cm vs 22 cm).
    15 cm vs 22 cm
  • 4x cheaper
    YIJU SY-702 is cheaper than the average air purifier (£35 vs £140).
    £35 vs £140
  • 6 dB lower maximum noise level
    This air purifier runs quieter at maximum speed than the average air purifier (47 dB vs 53 dB).
    47 dB vs 53 dB
  • Supports 360° purification
    This air purifier supports 360° purification; the average air purifier does not.
  • Has a child lock
    This air purifier has a child lock; the average air purifier does not.
  • Has an ionizer
    This air purifier has an ionizer; the average air purifier does not.
  • 62.8% lower weight
    This air purifier is lighter than the average air purifier (1.7 kg vs 4.57 kg).
    1.7 kg vs 4.57 kg
  • 12.3 cm narrower width
    This air purifier is narrower than the average air purifier (15 cm vs 27.3 cm).
    15 cm vs 27.3 cm
  • 28 cm shorter height
    This air purifier has a lower height than the average air purifier (22 cm vs 50 cm).
    22 cm vs 50 cm
  • 7 cm shallower depth
    This air purifier is shallower than the average air purifier (15 cm vs 22 cm).
    15 cm vs 22 cm
  • No air-quality indicator
    This air purifier does not have an air-quality indicator; the average air purifier does.
  • No auto mode
    This air purifier does not have auto mode; the average air purifier does.
  • 37.5% lower CADR
    This air purifier provides a lower clean air delivery rate than the average air purifier (150 m³/h vs 240 m³/h).
    150 m³/h vs 240 m³/h
  • 29 m² smaller room area
    This air purifier covers a smaller room area than the average air purifier (20 m² vs 49 m²).
    20 m² vs 49 m²
  • 21.5 W lower power
    This air purifier has a lower power output than the average air purifier (16 W vs 37.5 W).
    16 W vs 37.5 W
  • 0.6 m shorter power cord
    This air purifier features a shorter power cord than the average air purifier (1.2 m vs 1.8 m).
    1.2 m vs 1.8 m
  • 6.67x less popular
    YIJU SY-702 is less popular than the average air purifier (1 vs 6.7).
    1 vs 6.67
  • 7.3% worse value for money
    YIJU SY-702 offers worse value for money than the average air purifier (7 vs 7.5).
    7 vs 7.52
  • 6.67x less popular
    YIJU SY-702 is less popular than the average air purifier (1 vs 6.7).
    1 vs 6.67
  • 7.3% worse value for money
    YIJU SY-702 offers worse value for money than the average air purifier (7 vs 7.5).
    7 vs 7.52
  • 0.6% lower user score
    User score
    8.0/ 10
    ✕
    What it is
    A rating that combines user reviews with the total review volume for products in the Air Purifiers category.
    When it matters
    When you want to know how products in the Air Purifiers 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
    YIJU SY-702
    the average air purifier
    YIJU SY-702 has a lower user score than the average air purifier (8.00 vs 8.048).
    8 vs 8.05
  • 37.5% lower CADR
    This air purifier provides a lower clean air delivery rate than the average air purifier (150 m³/h vs 240 m³/h).
    150 m³/h vs 240 m³/h
  • 29 m² smaller room area
    This air purifier covers a smaller room area than the average air purifier (20 m² vs 49 m²).
    20 m² vs 49 m²
  • 21.5 W lower power
    This air purifier has a lower power output than the average air purifier (16 W vs 37.5 W).
    16 W vs 37.5 W
  • No air-quality indicator
    This air purifier does not have an air-quality indicator; the average air purifier does.
  • No auto mode
    This air purifier does not have auto mode; the average air purifier does.
  • 0.6 m shorter power cord
    This air purifier features a shorter power cord than the average air purifier (1.2 m vs 1.8 m).
    1.2 m vs 1.8 m
  • 83.9% larger external volume
    This air purifier has a larger overall volume than the average air purifier (4950 cm³ vs 30700.8 cm³).
    4,950 cm³ vs 30,700.8 cm³

Video reviews

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

Third-party reviews

What we like about YIJU SY-702

  • Equipped with an efficient H13 medical-grade True HEPA filter that removes 99.97% of fine particles, dust, and pollen.
  • Features a dual-function design that supports aromatherapy with a dedicated essential oil tray.
  • Operates quietly, particularly in its low-noise sleep mode (around 20 decibels).
  • Comes with convenient settings, including multiple fan speeds, timer functions, and adjustable ambient lighting.
  • Powered via a portable and convenient USB Type-C connection.
  • Highly budget-friendly and simple to operate.

What we don't like about YIJU SY-702

  • The physical size can feel somewhat bulky or unnecessary if used strictly in small rooms.
  • Operating noise can become noticeably loud and potentially disruptive at the highest speed settings.
  • The filter lifespan is relatively short, requiring full replacement every 3 to 6 months depending on usage.
  • The price point and coverage scale may not appeal to buyers looking for a heavy-duty or industrial-grade option.

Verdict

The YIJU SY-702 is a compact, portable air purifier featuring a 3-layer filtration system composed of a pre-filter, H13 grade True HEPA filter, and a high-efficiency activated carbon filter that captures 99.97% of PM2.5 particles, allergens, dust, smoke, and odours down to 0.1 microns. Operating at a rated power of 16W with a clean air delivery rate (CADR) of 150 m³/h, this 100% ozone-free unit includes dual functionality as an aromatherapy diffuser, an integrated 2,000-hour filter life timer, one-button touch control, and an 8-hour auto-shutoff sleep mode that drops noise levels down to 28–30 dB while dimming the blue LED ambient nightlight. Main pros include its highly efficient medical-grade filtration, exceptionally quiet night mode operation, versatile aromatherapy capability, and a travel-friendly, lightweight design powered via USB Type-C. However, main cons include a restricted effective coverage area limited to small rooms up to 15 square metres, and a high-maintenance filter life that requires replacement every 3 to 6 months depending on local air pollution levels.

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