Scored using Air Purifiers Methodology v1.0
Air Purifiers Methodology v1.0
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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Dyson Purifier Cool Formaldehyde TP09 Review | 45 Data compared

Avg. price:~£590Max. CADR:172 m³/hMaximum room area:27 m²Maximum noise level:61.5 dBHEPA filter:yesWeight:4.85 kg

Dyson Purifier Cool Formaldehyde TP09 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.

Dyson Purifier Cool Formaldehyde TP09
6.4/10

Overall score

Score
6.4/ 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
Score components

80%

6.1

Technical score

20%

7.9

User score

â–¼Worse than 71% of air purifiers
6.0

Value for money

Value for money
6.0/ 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
Score components

70%

6.4

Overall score

30%

5.1

Price

â–¼Worse than 99%
6.1

Technical score

Technical score
6.1/ 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
Score components

50%

4.1

Performance

40%

8.4

Features

10%

6.5

Design

â–¼Worse than 70%
7.9

User score

User score
7.9/ 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
Score components

70%

8.3

User ratings

30%

7.2

Number of reviews

Based on 1,021 buyer reviews from online shops.
How we calculate this
User ratings – average star rating across all shop listings, weighted by how many reviews each has, on a 1–10 scale.
Number of reviews – how many buyer reviews the product has, on a logarithmic scale; the 8% most-reviewed models in the category get 10.
â–¼Worse than 72%
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Best prices
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Air Purifiers model ranking

Ranked #113 of 184 models in Air Purifiers (Overall score)

Technical Specifications of air purifier Dyson Purifier Cool Formaldehyde TP09

Technical score
Technical score
6.1/ 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
Score components:

50%

4.1

Performance

40%

8.4

Features

10%

6.5

Design

6.1
User score
User score
7.9/ 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
Score components

70%

8.3

User ratings

30%

7.2

Number of reviews

Based on 1,021 buyer reviews from online shops.
How we calculate this
User ratings – average star rating across all shop listings, weighted by how many reviews each has, on a 1–10 scale.
Number of reviews – how many buyer reviews the product has, on a logarithmic scale; the 8% most-reviewed models in the category get 10.
7.9
Popularity
Popularity
7.2/ 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
Popularity:
Dyson Purifier Cool Formaldehyde TP09 has a popularity score of 7.2 points, which is higher than 56.8% of products in this category.
7.2
Value for money
Value for money
6.0/ 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
Score components:

70%

6.4

Overall score

30%

5.1

Price

6.0
Power
40 W
This air purifier has a power output of 40 W, which is higher than that of 51.4% of air purifiers and the same as that of 7.2% of air purifiers.
Max. CADR
172 m³/h
This air purifier delivers a CADR of 172 m³/h, which is lower than that of 72.7% of air purifiers.
Maximum room area
27 m²
This air purifier covers up to 27 m², which is smaller than 80.5% of air purifiers and the same as 1.2% of air purifiers.
N. of speeds
10
This air purifier offers 10 fan speeds, which is more than 93.3% of air purifiers and the same as 4.5% of air purifiers.
Maximum noise level
61.5 dB
This air purifier reaches 61.5 dB at maximum speed, which is louder than 89.6% of air purifiers.
Show more
Air quality indicator
yes
This air purifier has 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
yes
This air purifier has 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
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
white, gold
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
remote, app, voice
Show more

Dyson Purifier Cool Formaldehyde TP09 vs the average air purifier

246810TotalPerformanceFeaturesDesign
  • 7 more fan speeds
    This air purifier provides more fan speed settings than the average air purifier (10 vs 3).
    10 vs 3
  • Supports Wi‑Fi
    This air purifier supports Wi‑Fi; the average air purifier does not.
  • Has a fan function
    This air purifier has a fan function; the average air purifier does not.
  • Supports voice control
    This air purifier supports voice control; the average air purifier does not.
  • Supports 360° purification
    This air purifier supports 360° purification; the average air purifier does not.
  • 5.3 cm narrower width
    This air purifier is narrower than the average air purifier (22 cm vs 27.3 cm).
    22 cm vs 27.3 cm
  • 2.5 W higher power
    This air purifier has a higher power output than the average air purifier (40 W vs 37.5 W).
    40 W vs 37.5 W
  • 7.7% more popular
    Dyson Purifier Cool Formaldehyde TP09 is more popular than the average air purifier (7.18 vs 6.7).
    7.18 vs 6.67
  • 7.7% more popular
    Dyson Purifier Cool Formaldehyde TP09 is more popular than the average air purifier (7.18 vs 6.7).
    7.18 vs 6.67
  • 7 more fan speeds
    This air purifier provides more fan speed settings than the average air purifier (10 vs 3).
    10 vs 3
  • Supports 360° purification
    This air purifier supports 360° purification; the average air purifier does not.
  • 2.5 W higher power
    This air purifier has a higher power output than the average air purifier (40 W vs 37.5 W).
    40 W vs 37.5 W
  • Supports Wi‑Fi
    This air purifier supports Wi‑Fi; the average air purifier does not.
  • Has a fan function
    This air purifier has a fan function; the average air purifier does not.
  • Supports voice control
    This air purifier supports voice control; the average air purifier does not.
  • 5.3 cm narrower width
    This air purifier is narrower than the average air purifier (22 cm vs 27.3 cm).
    22 cm vs 27.3 cm
  • No washable prefilter
    This air purifier does not have a washable prefilter; the average air purifier does.
  • 8.5 dB higher maximum noise level
    This air purifier runs louder at maximum speed than the average air purifier (61.5 dB vs 53 dB).
    61.5 dB vs 53 dB
  • 22 m² smaller room area
    This air purifier covers a smaller room area than the average air purifier (27 m² vs 49 m²).
    27 m² vs 49 m²
  • 28.3% lower CADR
    This air purifier provides a lower clean air delivery rate than the average air purifier (172 m³/h vs 240 m³/h).
    172 m³/h vs 240 m³/h
  • 55 cm taller height
    This air purifier is taller than the average air purifier (105 cm vs 50 cm).
    105 cm vs 50 cm
  • 4.21x more expensive
    Dyson Purifier Cool Formaldehyde TP09 is more expensive than the average air purifier (£590 vs £140).
    £590 vs £140
  • 24.4% worse value for money
    Dyson Purifier Cool Formaldehyde TP09 offers worse value for money than the average air purifier (6.04 vs 7.5).
    6.04 vs 7.52
  • 1.5% lower user score
    User score
    7.9/ 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
    ▼▼
    <55-66-77-88-99-10
    Dyson Purifier Cool Formaldehyde TP09
    the average air purifier
    Dyson Purifier Cool Formaldehyde TP09 has a lower user score than the average air purifier (7.93 vs 8.048).
    7.93 vs 8.05
  • 4.21x more expensive
    Dyson Purifier Cool Formaldehyde TP09 is more expensive than the average air purifier (£590 vs £140).
    £590 vs £140
  • 24.4% worse value for money
    Dyson Purifier Cool Formaldehyde TP09 offers worse value for money than the average air purifier (6.04 vs 7.5).
    6.04 vs 7.52
  • 1.5% lower user score
    User score
    7.9/ 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
    ▼▼
    <55-66-77-88-99-10
    Dyson Purifier Cool Formaldehyde TP09
    the average air purifier
    Dyson Purifier Cool Formaldehyde TP09 has a lower user score than the average air purifier (7.93 vs 8.048).
    7.93 vs 8.05
  • 8.5 dB higher maximum noise level
    This air purifier runs louder at maximum speed than the average air purifier (61.5 dB vs 53 dB).
    61.5 dB vs 53 dB
  • 28.3% lower CADR
    This air purifier provides a lower clean air delivery rate than the average air purifier (172 m³/h vs 240 m³/h).
    172 m³/h vs 240 m³/h
  • 22 m² smaller room area
    This air purifier covers a smaller room area than the average air purifier (27 m² vs 49 m²).
    27 m² vs 49 m²
  • No washable prefilter
    This air purifier does not have a washable prefilter; the average air purifier does.
  • 55 cm taller height
    This air purifier is taller than the average air purifier (105 cm vs 50 cm).
    105 cm vs 50 cm
  • 6.1% higher weight
    This air purifier is heavier than the average air purifier (4.9 kg vs 4.57 kg).
    4.85 kg vs 4.57 kg
  • 65.5% larger external volume
    This air purifier has a larger overall volume than the average air purifier (50820 cm³ vs 30700.8 cm³).
    50,820 cm³ vs 30,700.8 cm³

Video reviews

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

Expert reviews

In-depth analysis and verdict from leading tech publications

T
the-gadgeteer.com
03/06/2021
Summary of the review
T
tech360.tv
08/05/2021
Summary of the review
T
thedailybeast.com
26/04/2022
Summary of the review
G
gizbot.com
13/09/2022
Summary of the review
T
techhive.com
15/12/2022
Summary of the review
S
sgmagazine.com
23/06/2023
Summary of the review
H
homesandgardens.com
14/06/2024
Summary of the review

Third-party reviews

Based on 1,021 buyer reviews from online shops.
Reviews last updated: August 2026 · How we calculate this

What we like about Dyson Purifier Cool Formaldehyde TP09

  • Excellent, intelligent automatic sensors that accurately detect air quality changes
  • Very quiet operation on lower settings, suitable for nighttime use
  • Effective at circulating air and cooling, even in large rooms
  • High-quality design and build with useful Dyson app connectivity
  • Formaldehyde detection and destruction capabilities are highly regarded

What we don't like about Dyson Purifier Cool Formaldehyde TP09

  • High price point makes it an expensive investment
  • Weak airflow performance as a fan, especially when compared to traditional fans
  • Can be loud when operating at higher speed settings
  • Limited effectiveness at removing strong cooking odors
  • Low Clean Air Delivery Rate (CADR) compared to some competitors, meaning it takes longer to clean air

Verdict

The Dyson Purifier Cool Formaldehyde TP09 is a premium tower-style 40W air purifier and bladeless cooling fan engineered with fully sealed HEPA H13 and activated carbon filtration that captures 99.95% of ultrafine particles down to 0.1 microns, including dust, allergens, and gases. Its standout characteristic is a dedicated solid-state sensor paired with a lifetime catalytic filter that continuously detects and destroys harmful formaldehyde by converting it into water and CO2. Main pros include a powerful 290 litres per second airflow driven by Air Multiplier technology, a 350-degree adjustable oscillation, 10 fan speed settings, a backward-diffused mode for winter purification without cooling, real-time LCD and mobile app monitoring, and an acoustically engineered chassis that is 20% quieter than previous models. However, notable cons include its high upfront price and filter replacement costs, a lower Clean Air Delivery Rate (CADR) compared to less expensive competitors in its price range, and a cooling breeze that some reviewers find relatively weak or noisy at higher speeds.

Compare Dyson Purifier Cool Formaldehyde TP09 with other products in the Air Purifiers category

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