Dyson Purifier Cool Formaldehyde TP09

Dyson Purifier Cool Formaldehyde TP09 Air Purifier Review

Brand: Dyson
Released: May 1, 2021
Updated: 2 months ago
3.5
Overall review score Expert score: 4.1 Customer score: 2.8
387
Review evidence points
49
Scored features
105
Total reviews
9 expert / 96 customer

Bottom Line

Choose the TP09 for smart monitoring, formaldehyde/VOC focus, and stylish purification. Skip it if you need powerful cooling, quiet long-term operation, low filter costs, or dependable support.

Best for

Best for buyers who want a design-forward purifier with formaldehyde/VOC monitoring, app controls, and visible air-quality feedback. It is especially compelling for allergy, off-gassing, cooking-fume, or data-focused households.

Not for

Not for shoppers who mainly need a strong cooling fan, a low-cost purifier, or a quiet bedroom unit at every speed. It is also risky for buyers unwilling to deal with possible warranty, remote, app, or early-failure issues.

Verdict

The Dyson Purifier Cool Formaldehyde TP09 earns real praise for detecting pollutants, presenting air quality clearly, and giving users app-based control over a premium-looking purifier fan. Expert reviews especially like its formaldehyde/VOC focus, HEPA filtration, oscillation, and real-time monitoring. Customer reviews add strong allergy, odor, and clean-air wins, but they also expose the tradeoff: this is not always a powerful cooling fan, and high-pitched noise, early failures, missing remotes, app pairing, filter availability, and support problems appear repeatedly. It suits buyers who value smart purification data and formaldehyde peace of mind more than raw fan strength or bargain value.

Feature Scorecards

Summary

49 reviewed features
  • Very positive 4.5-5.0
    14 (29%)
  • Positive 3.5-4.4
    13 (27%)
  • Neutral 2.5-3.4
    11 (22%)
  • Negative 1.5-2.4
    9 (18%)
  • Very negative below 1.5
    2 (4%)

Pros

  • 4.5
    12 reviews strong consensus
    ease of use: 4.5, 12 reviews, strong consensus
    Ease of use is a strength, with setup, controls, and operation repeatedly described as easy or intuitive.
  • 4.6
    9 reviews strong consensus
    overall satisfaction: 4.6, 9 reviews, strong consensus
    Overall satisfaction is split between enthusiastic repeat-buy praise and disappointment from noise, failures, or value concerns.
  • 4.5
    12 reviews strong consensus
    design and appearance: 4.5, 12 reviews, strong consensus
    Design and appearance are widely praised as modern, stylish, compact-looking, and visually premium.
  • 4.7
    7 reviews strong consensus
    allergen reduction: 4.7, 7 reviews, strong consensus
    Allergen-related evidence is strongly positive, with customers reporting better allergies, asthma, and less congestion.
  • 4.3
    13 reviews moderate consensus
    real-time air quality monitoring: 4.3, 13 reviews, moderate consensus
    Real-time air quality monitoring is a major strength, repeatedly praised through the display and app data.
  • 4.0
    45 reviews low consensus
    air purification performance: 4.0, 45 reviews, low consensus
    Purification performance draws the strongest positive evidence from expert tests and many customers, but a smaller group reports no noticeable clean-air improvement.

Cons

  • 1.1
    14 reviews strong consensus
    customer support: 1.1, 14 reviews, strong consensus
    Customer support is one of the weakest recurring areas, with many warranty, return, repair, and response complaints.
  • 1.3
    15 reviews strong consensus
    reliability: 1.3, 15 reviews, strong consensus
    Reliability is a major weakness in customer reviews, with repeated reports of early failure, error messages, broken oscillation, and defective units.
  • 1.7
    7 reviews low consensus
    condition on arrival: 1.7, 7 reviews, low consensus
    Arrival condition is inconsistent, ranging from excellent condition to damaged, broken, or poorly packed units.
  • 1.6
    5 reviews strong consensus
    durability: 1.6, 5 reviews, strong consensus
    Durability is a major concern in customer reviews, with repeated early failures, bearing issues, and noise developing after weeks or months.
  • 1.8
    7 reviews low consensus
    replacement experience: 1.8, 7 reviews, low consensus
    Replacement and repair experiences are mostly negative, although one customer reports Dyson eventually made the issue right.
  • 1.9
    8 reviews low consensus
    remote control: 1.9, 8 reviews, low consensus
    Remote control is a recurring gap: reviewers like the magnetic remote when present, but missing, broken, or unsupported remotes hurt the experience.

Compared With Category Average

Compared with other Air Purifiers, this product is above average in VOC reduction, VOC sensor accuracy, app connectivity, near average in adjustable vents, design and appearance, below average in indicator lights, customer support, reliability.

Comparison summary

49 compared features
  • Above average 0.4+ pts higher
    13 (27%)
  • Same as average within 0.3 pts
    15 (31%)
  • Below average 0.4+ pts lower
    21 (43%)

Largest category differences

Attribute This product Category average Difference
indicator lights 1.5 3.9 -2.4
customer support 1.1 3.0 -1.9
reliability 1.3 3.0 -1.7
filter availability 1.5 3.5 -2.0
handle design 1.5 3.4 -1.9
durability 1.6 3.3 -1.7
sleep mode 2.5 4.2 -1.7
noise level 2.7 4.0 -1.3

Consider This Instead

If you want better durability

Choose Levoit EverestAir. It scores 4.7 vs 1.6 for durability, with a 4.5 overall score.

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Compared in Reviews

Products reviewers directly compared with this model, grouped into quick takeaways.

Dreo\'s Air Purifier Tower Fan

  • Cheaper: price and core functions The reviewer says Dreo offers similar core fan-purifier functions for much less money.

Dyson Purifier Cool Gen1 TP10 Purifying Fan

  • Older model: air quality data and diffused mode The TP09 is presented as worth the extra spend over the TP10 for app data and diffused airflow.

FAQ

Does the Dyson TP09 purify air well?

Most expert evidence says yes, especially for pollutant detection, HEPA filtration, formaldehyde/VOC focus, and PM response. Some customers still report little noticeable air-quality change.

Is the TP09 quiet?

It can be quiet at low speeds, but many customer reviews complain about loud, high-pitched, whistling, or screeching noises that develop over time.

Does it work well as a fan?

It provides smooth airflow and some cooling, but many reviewers say it is weaker than a dedicated tower fan, especially for cooling a whole room.

Is the app useful?

Yes for many users: reviews praise air-quality graphs, remote control, pollutant readings, and auto-mode insight. A smaller set reports pairing or regional app problems.

Is it worth the price?

Value is split. It feels worthwhile to buyers who need premium sensing and formaldehyde filtering, but poor value to those focused on fan power, quietness, or low ownership cost.

What are the biggest risks?

Recurring risks include high-pitched noise, early reliability failures, missing or broken remotes, filter availability, expensive replacements, and frustrating support experiences.

Sample Expert Reviews We Analyzed

These are a few of the reviews included in our analysis.

Video Reviews

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