OVERALL
SPECS
VS AVERAGE
REVIEWS
ALTERNATIVES

GREE GCF300ASNA Review | 46 Data compared

double-arrow
  • Avg. price: ~£130
  • Max. CADR: 340 m³/h
  • Maximum room area: 80 m²
  • Maximum noise level: 58 dB
  • HEPA filter: yes
  • Weight: 8 kg

GREE GCF300ASNA 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.

6.8

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%

6.5

Technical Score

20.0%

7.9

User score

Good
6.5

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%

5.7

Performance

40.0%

8.0

Features

10.0%

4.4

Design

Good
7.9

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%

8.8

User reviews

30.0%

5.8

Popularity

User score:
United Kingdom
amazon
4.4
(304)
United States
Amazon_logo.png
4.4
(304)

(Reviews last updated: August 2026)

Very good
  • 5.8
    Bedroom use

    Score components:

    35.0%

    2.9

    Maximum noise level

    30.0%

    10

    Night mode

    20.0%

    6.8

    Maximum room area

    15.0%

    2.9

    Weight

  • 8.3
    Allergy relief

    Score components:

    35.0%

    7.6

    Max. CADR

    30.0%

    10

    HEPA filter

    20.0%

    5.5

    Number of filtration stages

    15.0%

    10

    Washable prefilter

  • 8.4
    Smoke removal

    Score components:

    35.0%

    10

    Activated carbon filter

    30.0%

    7.6

    Max. CADR

    20.0%

    5.5

    Number of filtration stages

    15.0%

    10

    Air quality indicator

  • gree-gcf300asna
  • gree-gcf300asna
  • gree-gcf300asna
  • gree-gcf300asna
  • gree-gcf300asna
  • gree-gcf300asna
  • gree-gcf300asna
  • gree-gcf300asna
  • gree-gcf300asna
gree-gcf300asna
gree-gcf300asna
gree-gcf300asna
gree-gcf300asna
gree-gcf300asna
gree-gcf300asna
gree-gcf300asna
gree-gcf300asna
gree-gcf300asna

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 GREE GCF300ASNA is a 43-watt corded electric air purifier engineered for spaces ranging from 20 to 80 square metres, delivering a particulate CADR of up to 305 m³/h. Its core strength lies in a 3-in-1 filtration system comprising a primary filter, an H13 True HEPA filter that captures 99.97% of particles down to 0.3 micrometres, an activated carbon filter for volatile organic compounds (VOCs) and odours, and an optional built-in UV sterilization light. Main advantages include a ultra-quiet 24-decibel sleep mode, real-time air quality monitoring with automatic fan speed adjustments, three physical speeds, a 2/4/8-hour timer, and an intelligent filter replacement indicator. However, it lacks advanced modern smart features such as Wi-Fi connectivity or a remote control, and its 305 m³/h CADR may prove underpowered for highly polluted or very large open-concept spaces exceeding its optimal thresholds.

Technical Specifications of air purifier GREE GCF300ASNA

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%

5.7

Performance

40.0%

8.0

Features

10.0%

4.4

Design

6.5
GREE GCF300ASNA has a technical score of 6.48 points, which is lower than 53.6% 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%

8.8

User reviews

30.0%

5.8

Popularity

User score:
United Kingdom
amazon
4.4
(304)
United States
Amazon_logo.png
4.4
(304)

(Reviews last updated: August 2026)

7.9
GREE GCF300ASNA has a user score of 7.89 points, which is lower than 67.2% 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.
5.8
GREE GCF300ASNA has a popularity of 5.8 points, which is lower than 52.5% 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%

6.8

Overall score

40.0%

9.7

Price

7.6
GREE GCF300ASNA has a quality-to-price ratio of 7.6 points, which is higher than 55.2% 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

43 W
GREE GCF300ASNA has a power output of 43 W, which is higher than that of 61.3% of air purifiers and the same as that of 0.6% 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

340 m³/h
GREE GCF300ASNA delivers a CADR of 340 m³/h, which is higher than that of 69.6% of air purifiers and the same as that of 1.9% 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

80 m²
GREE GCF300ASNA covers up to 80 m², which is larger than 72.4% of air purifiers and the same as 1.2% 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
GREE GCF300ASNA 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

58 dB
GREE GCF300ASNA reaches 58 dB at maximum speed, which is louder than 77.4% 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

yes
GREE GCF300ASNA has 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

no
GREE GCF300ASNA does not support 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

yes
GREE GCF300ASNA has 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

yes
GREE GCF300ASNA has 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

8 hours
GREE GCF300ASNA 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
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

no
GREE GCF300ASNA does not have 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

N/A
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

buttons
Show more

GREE GCF300ASNA vs the average air purifier

  • 41.7% higher CADR
    GREE GCF300ASNA provides a higher clean air delivery rate than the average air purifier (340 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

    GREE GCF300ASNA provides a higher clean air delivery rate than the average air purifier (340 m³/h vs 240 m³/h).340 m³/h vs 240 m³/h
  • 31 m² larger room area
    GREE GCF300ASNA covers a larger room area than the average air purifier (80 m² vs 49 m²).
    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

    GREE GCF300ASNA covers a larger room area than the average air purifier (80 m² vs 49 m²).80 m² vs 49 m²
  • Has UV light
    GREE GCF300ASNA has UV light; the average air purifier does not.
    What it is: An internal ultraviolet (UV-C) light chamber designed to neutralize airborne mold spores, bacteria, and viruses passing through.
    When it matters: Valuable for environments requiring extra germicidal disinfection, complementing physical particulate filters with light sanitization.

    Importance: LOW

    GREE GCF300ASNA has UV light; the average air purifier does not.
  • Has a handle
    GREE GCF300ASNA has a handle; the average air purifier does not.
    What it is: An integrated carry handle or recessed hand grip built into the chassis for lifting.
    When it matters: Makes transporting the air purifier between bedrooms, living areas, or up and down stairs safer and effortless.

    Importance: LOW

    GREE GCF300ASNA has a handle; the average air purifier does not.
  • 5.5 W higher power
    GREE GCF300ASNA has a higher power output than the average air purifier (43 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

    GREE GCF300ASNA has a higher power output than the average air purifier (43 W vs 37.5 W).43 W vs 37.5 W
  • 2.4% better value for money
    GREE GCF300ASNA offers better value for money than the average air purifier (7.64 vs 7.463).
    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.
    GREE GCF300ASNA offers better value for money than the average air purifier (7.64 vs 7.463).7.64 vs 7.46
  • 7.7% cheaper
    GREE GCF300ASNA is cheaper than the average air purifier (£130 vs £140).
    GREE GCF300ASNA is cheaper than the average air purifier (£130 vs £140).£130 vs £140
  • 41.7% higher CADR
    GREE GCF300ASNA provides a higher clean air delivery rate than the average air purifier (340 m³/h vs 240 m³/h).
  • 31 m² larger room area
    GREE GCF300ASNA covers a larger room area than the average air purifier (80 m² vs 49 m²).
  • 5.5 W higher power
    GREE GCF300ASNA has a higher power output than the average air purifier (43 W vs 37.5 W).
  • Has UV light
    GREE GCF300ASNA has UV light; the average air purifier does not.
  • Has a handle
    GREE GCF300ASNA has a handle; the average air purifier does not.

Total
Overall
Performance
Features
Design
  • Lower Manufacturer warranty
    GREE GCF300ASNA offers lower Manufacturer warranty than the average air purifier (1 years vs $$$).
  • 5 dB higher maximum noise level
    GREE GCF300ASNA runs louder at maximum speed than the average air purifier (58 dB vs 53 dB).
  • No continuous purification
    GREE GCF300ASNA does not support continuous purification; the average air purifier does.
  • 75.1% higher weight
    GREE GCF300ASNA is heavier than the average air purifier (8 kg vs 4.57 kg).
  • No display
    GREE GCF300ASNA does not have a display; the average air purifier does.
  • 0.7 m shorter power cord
    GREE GCF300ASNA features a shorter power cord than the average air purifier (1.1 m vs 1.8 m).
  • 4 cm greater depth
    GREE GCF300ASNA is deeper than the average air purifier (26 cm vs 22 cm).
  • 3.7 cm wider width
    GREE GCF300ASNA is wider than the average air purifier (31 cm vs 27.3 cm).
  • 9848.98 cm³ larger external volume
    GREE GCF300ASNA has a larger overall volume than the average air purifier (41106 cm³ vs 31257.025 cm³).
  • 1 cm taller height
    GREE GCF300ASNA is taller than the average air purifier (51 cm vs 50 cm).
  • Lower Manufacturer warranty
    GREE GCF300ASNA offers lower Manufacturer warranty than the average air purifier (1 years vs $$$).
    What it is: This attribute shows the air purifier's manufacturer warranty.
    When it matters: It matters if longer manufacturer coverage is important to you.

    Importance: MEDIUM

    GREE GCF300ASNA offers lower Manufacturer warranty than the average air purifier (1 years vs $$$).1 years vs 2 years
  • 5 dB higher maximum noise level
    GREE GCF300ASNA runs louder at maximum speed than the average air purifier (58 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

    GREE GCF300ASNA runs louder at maximum speed than the average air purifier (58 dB vs 53 dB).58 dB vs 53 dB
  • 75.1% higher weight
    GREE GCF300ASNA is heavier than the average air purifier (8 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

    GREE GCF300ASNA is heavier than the average air purifier (8 kg vs 4.57 kg).8 kg vs 4.57 kg
  • No continuous purification
    GREE GCF300ASNA does not support continuous purification; the average air purifier does.
    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

    GREE GCF300ASNA does not support continuous purification; the average air purifier does.
  • No display
    GREE GCF300ASNA does not have a display; the average air purifier does.
    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

    GREE GCF300ASNA does not have a display; the average air purifier does.
  • 0.7 m shorter power cord
    GREE GCF300ASNA features a shorter power cord than the average air purifier (1.1 m vs 1.8 m).
    What it is: The total physical reach of the supplied electrical power cord, measured in metres (m).
    When it matters: Determines optimal placement flexibility relative to wall power outlets without needing extension cables.

    Importance: LOW

    GREE GCF300ASNA features a shorter power cord than the average air purifier (1.1 m vs 1.8 m).1.1 m vs 1.8 m
  • 4 cm greater depth
    GREE GCF300ASNA is deeper than the average air purifier (26 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

    GREE GCF300ASNA is deeper than the average air purifier (26 cm vs 22 cm).26 cm vs 22 cm
  • 3.7 cm wider width
    GREE GCF300ASNA is wider than the average air purifier (31 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

    GREE GCF300ASNA is wider than the average air purifier (31 cm vs 27.3 cm).31 cm vs 27.3 cm
Total
Overall
Performance
Features
Design

Graphic comparison of GREE GCF300ASNA and other products in the Air Purifiers category

Attribute category
Attribute
No results found

Third-party reviews

United Kingdom
amazon
4.4
304 Reviews
United States
Amazon_logo.png
4.4
304 Reviews

(Reviews last updated: August 2026)

What customers like about GREE GCF300ASNA?

  • Highly efficient 3-stage filtration featuring a medical-grade H13 True HEPA filter, an activated carbon filter, and a pre-filter
  • Equipped with built-in UV-A sterilization technology that adds a layer of defense against viruses, bacteria, and germs
  • Delivers a powerful clean air delivery rate (CADR) of 305 m³/h, rapidly cleaning spaces between 20 to 80 square meters
  • Whisper-quiet operation in Sleep Mode (around 24dB) making it comfortable for overnight bedroom use
  • Intelligent real-time air quality monitoring with color indicators (green, yellow, red) that automatically adjusts the fan speed in Auto Mode
  • User-friendly touch control panel with practical modes, an 8-hour auto-off timer, and a smart filter replacement reminder

What customers dislike about GREE GCF300ASNA?

  • Regular recurring costs due to the short filter life expectancy, requiring replacement every 3 to 6 months depending on air quality
  • Lacks advanced smartphone app connectivity and Wi-Fi control features found on newer competing smart air purifiers
  • Fan noise increases noticeably when running on the highest manual speed or under high-demand Turbo mode
  • The UV sterilization light must be manually toggled via specific speed/mode combinations rather than having a dedicated standalone button

Video reviews

Best alternatives

hunter-tower-air-purifier-true-hepa
Hunter Tower Air Purifier True HEPA

Air Purifiers

7.5
kalado-kca01
KALADO KCA01

Air Purifiers

7.4
levoit-core-300s
LEVOIT Core 300S

Air Purifiers

7.4
xiaomi-mi-air-purifier-3h-ac-m6-sc-23853
Xiaomi Mi Air Purifier 3H AC-M6-SC 23853

Air Purifiers

7.3
winix-am90
Winix AM90

Air Purifiers

7.8
zigma-aerio-300
Zigma Aerio 300

Air Purifiers

8.0
goveelife-smart-air-purifier-large-room
GoveeLife Smart Air Purifier Large Room

Air Purifiers

7.4
levoit-lv-pur131
LEVOIT LV-PUR131

Air Purifiers

6.9
bosch-air-2000-7733702200
Bosch Air 2000 7733702200

Air Purifiers

6.8
xiaomi-smart-air-purifier-4-xm200054
Xiaomi Smart Air Purifier 4 XM200054

Air Purifiers

7.3
winix-air-purifier-zero-s-1022-0214-05
Winix Air Purifier Zero S 1022-0214-05

Air Purifiers

7.8
morento-smart-large-room-air-purifier
MORENTO Smart Large Room Air Purifier

Air Purifiers

7.8

Compare GREE GCF300ASNA with other products in the Air Purifiers category

VS
VS

Compare