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ACADGQ O3 Review | 46 Data compared

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  • Avg. price in UK: ~£25
  • Avg. price in US: ~$30
  • Max. CADR: 150 m³/h
  • Maximum room area: 40 m²
  • Maximum noise level: 33 dB
  • HEPA filter: no
  • Weight: 0.4 kg

ACADGQ O3 review. Compare 46 technical specifications and user reviews to see how this product ranks in the Air Purifiers category and whether it is worth buying.

5.3

Overall score

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 components:

80.0%

4.9

Technical Score

20.0%

7.1

User score

Good
4.9

Technical Score

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 components:

50.0%

4.3

Performance

40.0%

4.6

Features

10.0%

9.0

Design

Poor
7.1

User score

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 components:

70.0%

8.2

User reviews

30.0%

4.6

Popularity

User score:
United Kingdom
amazon
4.1
(183)

(Reviews last updated: August 2026)

Very good
  • 8.1
    Bedroom use

    Score components:

    35.0%

    10

    Maximum noise level

    30.0%

    ?

    Night mode

    20.0%

    3.4

    Maximum room area

    15.0%

    10

    Weight

  • 4.5
    Allergy relief

    Score components:

    35.0%

    3.1

    Max. CADR

    30.0%

    4.0

    HEPA filter

    20.0%

    ?

    Number of filtration stages

    15.0%

    4.0

    Washable prefilter

  • 4.5
    Smoke removal

    Score components:

    35.0%

    4.0

    Activated carbon filter

    30.0%

    3.1

    Max. CADR

    20.0%

    ?

    Number of filtration stages

    15.0%

    4.0

    Air quality indicator

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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 ACADGQ O3 Mini Ozone Air Purifier is a compact, corded-electric deodorizer and sterilizer measuring 118 x 40 x 198 mm and weighing 0.39 kg, designed to treat spaces between 20 and 40 square meters using 5W of power. It operates via touch control and features an active oxygen ozone output of 200 mg/h alongside a low noise level of 33 decibels across 4 operational modes. Main pros include a professional, rapid 7-minute deodorization process that targets formaldehydes, pet odours, and bathroom smells, plus a high sterilization rate of up to 99.99% against bacteria like E. coli, staphylococci, and mould without requiring replacement filters. However, main cons include a lack of mechanical HEPA particle filtration for dust and allergens, and the inherent health necessity that the space must remain entirely unoccupied during active ozone generation to avoid respiratory irritation.

Technical Specifications of air purifier ACADGQ O3

Technical Score

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 components:

50.0%

4.3

Performance

40.0%

4.6

Features

10.0%

9.0

Design

4.9
ACADGQ O3 has a technical score of 4.88 points, which is lower than 92.9% of products in this category.
User score

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 components:

70.0%

8.2

User reviews

30.0%

4.6

Popularity

User score:
United Kingdom
amazon
4.1
(183)

(Reviews last updated: August 2026)

7.1
ACADGQ O3 has a user score of 7.13 points, which is lower than 83.6% of products in this category.
Popularity
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.
4.6
ACADGQ O3 has a popularity of 4.6 points, which is lower than 65% of products in this category.
Ratio quality/price

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 components:

60.0%

5.3

Overall score

40.0%

10

Price

6.7
ACADGQ O3 has a quality-to-price ratio of 6.7 points, which is lower than 84.2% of products in this category.
Power
What it is: The electrical power consumption of the air purifier during operation, measured in watts (W).
When it matters: Helpful for estimating long-term electricity costs, particularly when running the unit continuously day and night.

Importance: HIGH

8 W
ACADGQ O3 has a power output of 8 W, which is lower than that of 91.2% of air purifiers.
Max. CADR
What it is: The Clean Air Delivery Rate (CADR), measuring the volume of purified air delivered per hour in cubic metres.
When it matters: Crucial for determining how rapidly the purifier circulates and cleans room air, especially for severe allergies or larger spaces.

Importance: HIGH

150 m³/h
ACADGQ O3 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
What it is: The maximum recommended floor area (in square metres) that the air purifier can effectively treat.
When it matters: Essential for matching the purifier's airflow capacity to your room size so all air is filtered thoroughly.

Importance: HIGH

40 m²
ACADGQ O3 covers up to 40 m², which is smaller than 60.3% of air purifiers and the same as 6.9% of air purifiers.
N. of speeds
What it is: The number of manual airflow speed levels available to choose on the air purifier.
When it matters: Provides flexible control between whisper-quiet low speeds for sleeping and powerful high speeds for fast room clearing.

Importance: MEDIUM

3
ACADGQ O3 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
What it is: The sound level emitted by the air purifier when running at its highest fan speed, measured in decibels (dB).
When it matters: Important if you plan to use the purifier in bedrooms, nurseries, or home offices where loud fan noise causes disturbance.

Importance: HIGH

33 dB
ACADGQ O3 reaches 33 dB at maximum speed, which is quieter than 98.2% of air purifiers and the same as 0.6% of air purifiers.
Show more
Air quality indicator
What it is: An optical or laser sensor system displaying real-time indoor pollution levels via color rings or numerical values.
When it matters: Provides immediate visual feedback on air cleanliness and confirms that the purifier is working effectively.

Importance: MEDIUM

no
ACADGQ O3 does not have an air-quality indicator. This feature is present on 65.4% of air purifiers.
Continuous purification
What it is: Engineered motor and filter architecture designed for safe, uninterrupted 24/7 operation without thermal degradation.
When it matters: Essential for maintaining permanently low allergen and dust concentrations in polluted urban areas or high-pollen seasons.

Importance: LOW

yes
ACADGQ O3 supports continuous purification. This feature is present on 86.3% of air purifiers.
Auto mode
What it is: An intelligent operating mode that automatically increases or decreases fan speed based on live sensor pollution readings.
When it matters: Maximizes convenience and saves electricity by running quietly on low speed and ramping up only when pollution is detected.

Importance: MEDIUM

no
ACADGQ O3 does not have auto mode. This feature is present on 67% of air purifiers.
Timer
What it is: A programmable shut-off countdown timer that turns off the air purifier automatically after a set number of hours.
When it matters: Convenient for running the unit for a specific duration before leaving home or going to bed without wasting electricity.

Importance: LOW

no
ACADGQ O3 does not have a timer. This feature is present on 75% of air purifiers.
Maximum timer
What it is: The longest selectable countdown duration available on the air purifier's timer, expressed in hours.
When it matters: Relevant if you prefer setting extended automated operating cycles, such as a full 8-hour workday or 12-hour overnight window.

Importance: LOW

N/A
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Color
What it is: The primary exterior color and aesthetic finish of the air purifier housing.
When it matters: Important for ensuring the appliance blends harmoniously into your room decor and furniture style.

Importance: LOW

white
Material
What it is: The primary manufacturing material used for the outer casing, such as ABS plastic, polycarbonate, or aluminum.
When it matters: Influences structural rigidity, scratch resistance, premium appearance, and ease of wiping clean.

Importance: LOW

plastic
Display
What it is: An integrated digital screen showing active fan speed, particulate pollution numbers, filter health, and active timers.
When it matters: Enables quick visual checks of air metrics and purifier settings directly on the device without picking up your phone.

Importance: LOW

yes
ACADGQ O3 has a display. This feature is present on 51.1% of air purifiers.
Display position
What it is: The physical placement of the display screen on the body of the air purifier (e.g., top panel or front facade).
When it matters: Affects viewing convenience: top displays are easiest to read while standing, while front displays are visible from across the room.

Importance: LOW

front
Control type
What it is: The user interface mechanism for operating the device, such as capacitive touch keys, push buttons, or rotary dials.
When it matters: Determines tactile responsiveness, ease of operation in dark rooms, and durability over years of regular use.

Importance: LOW

touch
Show more

ACADGQ O3 vs the average air purifier

  • 20 dB lower maximum noise level
    ACADGQ O3 runs quieter at maximum speed than the average air purifier (33 dB vs 53 dB).
    What it is: The sound level emitted by the air purifier when running at its highest fan speed, measured in decibels (dB).
    When it matters: Important if you plan to use the purifier in bedrooms, nurseries, or home offices where loud fan noise causes disturbance.

    Importance: HIGH

    ACADGQ O3 runs quieter at maximum speed than the average air purifier (33 dB vs 53 dB).33 dB vs 53 dB
  • 91.2% lower weight
    ACADGQ O3 is lighter than the average air purifier (0.4 kg vs 4.57 kg).
    What it is: The total physical net weight of the air purifier without packaging, measured in kilograms (kg).
    When it matters: Important if you frequently carry the purifier between rooms, to different floors, or place it on furniture.

    Importance: MEDIUM

    ACADGQ O3 is lighter than the average air purifier (0.4 kg vs 4.57 kg).0.4 kg vs 4.57 kg
  • Has an ionizer
    ACADGQ O3 has an ionizer; the average air purifier does not.
    What it is: An auxiliary electronic feature releasing negative ions that attach to airborne particles, causing them to clump and settle faster.
    When it matters: Acts as a supplementary cleaning boost for fine dust, though buyers sensitive to ozone should ensure it can be toggled off.

    Importance: LOW

    ACADGQ O3 has an ionizer; the average air purifier does not.
  • 14.3 cm narrower width
    ACADGQ O3 is narrower than the average air purifier (13 cm vs 27.3 cm).
    What it is: The horizontal width across the front of the air purifier, measured in centimetres (cm).
    When it matters: Essential for confirming the unit fits neatly between furniture, in tight corners, or on compact bedside tables.

    Importance: LOW

    ACADGQ O3 is narrower than the average air purifier (13 cm vs 27.3 cm).13 cm vs 27.3 cm
  • 42.2 cm shorter height
    ACADGQ O3 has a lower height than the average air purifier (7.8 cm vs 50 cm).
    What it is: The vertical height of the air purifier unit, measured in centimetres (cm).
    When it matters: Important for ensuring the unit fits underneath tables, under low window sills, or onto designated shelves.

    Importance: LOW

    ACADGQ O3 has a lower height than the average air purifier (7.8 cm vs 50 cm).7.8 cm vs 50 cm
  • 9 cm shallower depth
    ACADGQ O3 is shallower than the average air purifier (13 cm vs 22 cm).
    What it is: The front-to-back depth measurement of the air purifier, in centimetres (cm).
    When it matters: Determines how far the purifier protrudes outward into walkways or away from walls.

    Importance: LOW

    ACADGQ O3 is shallower than the average air purifier (13 cm vs 22 cm).13 cm vs 22 cm
  • 5.6x cheaper
    ACADGQ O3 is cheaper than the average air purifier (£25 vs £140).
    ACADGQ O3 is cheaper than the average air purifier (£25 vs £140).£25 vs £140
  • 20 dB lower maximum noise level
    ACADGQ O3 runs quieter at maximum speed than the average air purifier (33 dB vs 53 dB).
  • Has an ionizer
    ACADGQ O3 has an ionizer; the average air purifier does not.
  • 91.2% lower weight
    ACADGQ O3 is lighter than the average air purifier (0.4 kg vs 4.57 kg).
  • 14.3 cm narrower width
    ACADGQ O3 is narrower than the average air purifier (13 cm vs 27.3 cm).
  • 42.2 cm shorter height
    ACADGQ O3 has a lower height than the average air purifier (7.8 cm vs 50 cm).
  • 9 cm shallower depth
    ACADGQ O3 is shallower than the average air purifier (13 cm vs 22 cm).

Total
Overall
Performance
Features
Design
  • 37.5% lower CADR
    ACADGQ O3 provides a lower clean air delivery rate than the average air purifier (150 m³/h vs 240 m³/h).
  • 29.5 W lower power
    ACADGQ O3 has a lower power output than the average air purifier (8 W vs 37.5 W).
  • 9 m² smaller room area
    ACADGQ O3 covers a smaller room area than the average air purifier (40 m² vs 49 m²).
  • No HEPA filter
    ACADGQ O3 does not have a HEPA filter; the average air purifier does.
  • No air-quality indicator
    ACADGQ O3 does not have an air-quality indicator; the average air purifier does.
  • No auto mode
    ACADGQ O3 does not have auto mode; the average air purifier does.
  • No activated carbon filter
    ACADGQ O3 does not have an activated carbon filter; the average air purifier does.
  • No washable prefilter
    ACADGQ O3 does not have a washable prefilter; the average air purifier does.
  • No dirty-filter indicator
    ACADGQ O3 does not have a dirty-filter indicator; the average air purifier does.
  • No timer
    ACADGQ O3 does not have a timer; the average air purifier does.
  • 0.07 % percentage points lower bacteria elimination
    ACADGQ O3 achieves lower certified bacteria elimination than the average air purifier (99.9% vs 99.97%).
  • Not suitable for reducing airborne mold spores
    ACADGQ O3 is not suitable for reducing airborne mold spores, the average air purifier is.
  • Not specifically suitable for homes with pets
    ACADGQ O3 is not specifically suitable for homes with pets, unlike the average air purifier.
  • 29938.83 cm³ larger external volume
    ACADGQ O3 has a larger overall volume than the average air purifier (1318.2 cm³ vs 31257.025 cm³).
  • No HEPA filter
    ACADGQ O3 does not have a HEPA filter; the average air purifier does.
    What it is: A High-Efficiency Particulate Air filter that traps at least 99.97% of microscopic airborne particles down to 0.3 microns.
    When it matters: Essential for allergy and asthma sufferers who require medical-grade capture of pollen, dust mite allergens, and fine pet dander.

    Importance: HIGH

    ACADGQ O3 does not have a HEPA filter; the average air purifier does.
  • No air-quality indicator
    ACADGQ O3 does not have an air-quality indicator; the average air purifier does.
    What it is: An optical or laser sensor system displaying real-time indoor pollution levels via color rings or numerical values.
    When it matters: Provides immediate visual feedback on air cleanliness and confirms that the purifier is working effectively.

    Importance: MEDIUM

    ACADGQ O3 does not have an air-quality indicator; the average air purifier does.
  • No auto mode
    ACADGQ O3 does not have auto mode; the average air purifier does.
    What it is: An intelligent operating mode that automatically increases or decreases fan speed based on live sensor pollution readings.
    When it matters: Maximizes convenience and saves electricity by running quietly on low speed and ramping up only when pollution is detected.

    Importance: MEDIUM

    ACADGQ O3 does not have auto mode; the average air purifier does.
  • 37.5% lower CADR
    ACADGQ O3 provides a lower clean air delivery rate than the average air purifier (150 m³/h vs 240 m³/h).
    What it is: The Clean Air Delivery Rate (CADR), measuring the volume of purified air delivered per hour in cubic metres.
    When it matters: Crucial for determining how rapidly the purifier circulates and cleans room air, especially for severe allergies or larger spaces.

    Importance: HIGH

    ACADGQ O3 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
  • No activated carbon filter
    ACADGQ O3 does not have an activated carbon filter; the average air purifier does.
    What it is: A porous carbon layer that adsorbs volatile organic compounds (VOCs), chemical vapors, cooking smells, and tobacco smoke.
    When it matters: Crucial for eliminating persistent household odors, cooking fumes, tobacco smoke, and chemical gas pollutants that HEPA cannot trap.

    Importance: HIGH

    ACADGQ O3 does not have an activated carbon filter; the average air purifier does.
  • No washable prefilter
    ACADGQ O3 does not have a washable prefilter; the average air purifier does.
    What it is: A reusable outer mesh screen that traps hair, pet fur, and coarse dust, and can be rinsed clean under running water.
    When it matters: Substantially extends the lifespan of expensive inner HEPA and carbon filters by stopping large debris from clogging them.

    Importance: MEDIUM

    ACADGQ O3 does not have a washable prefilter; the average air purifier does.
  • 29.5 W lower power
    ACADGQ O3 has a lower power output than the average air purifier (8 W vs 37.5 W).
    What it is: The electrical power consumption of the air purifier during operation, measured in watts (W).
    When it matters: Helpful for estimating long-term electricity costs, particularly when running the unit continuously day and night.

    Importance: HIGH

    ACADGQ O3 has a lower power output than the average air purifier (8 W vs 37.5 W).8 W vs 37.5 W
  • No dirty-filter indicator
    ACADGQ O3 does not have a dirty-filter indicator; the average air purifier does.
    What it is: A sensor-driven warning light or display icon alerting you when filters have reached saturation and need replacement or cleaning.
    When it matters: Prevents the purifier from circulating uncleaned air with clogged filters and ensures you never replace filters earlier than necessary.

    Importance: MEDIUM

    ACADGQ O3 does not have a dirty-filter indicator; the average air purifier does.
Total
Overall
Performance
Features
Design

Graphic comparison of ACADGQ O3 and other products in the Air Purifiers category

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Third-party reviews

United Kingdom
amazon
4.1
183 Reviews

(Reviews last updated: August 2026)

What customers like about ACADGQ O3?

  • Highly efficient at rapid deodorization, removing tough bathroom, pet, and smoke smells within minutes.
  • Effective at surface sanitization, killing bacteria and mold spores in unoccupied spaces.
  • Compact, portable, and convenient for travel or switching between different rooms.
  • Features multiple working modes and an easy-to-use digital control panel with a timer function.

What customers dislike about ACADGQ O3?

  • Emits a distinct, sharp metallic active-oxygen odor during operation that some users find unpleasant.
  • Requires humans and pets to completely vacate the room during operation due to respiratory safety risks from O3 gas.
  • Does not physically trap or filter out particulate matter like dust, pollen, or pet dander since it lacks a physical HEPA filter.
  • Requires a strict post-treatment ventilation period before the room can be safely re-entered.

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