Dyson · Updated July 2026
Dyson Purifier Big+Quiet Formaldehyde BP04: price, specs & release date
Dyson Purifier Big+Quiet Formaldehyde BP04, released 2023. Every price and spec below is linked to its source and dated — no guesses.
Source: dyson.com verified ✓ corroborated verify in ledger
- Best for Powerful; cleans very large open-plan spaces; Very long filter life (five-year HEPA H13).
- Skip if Very expensive; costs a small fortune is a dealbreaker.
Price history
$1199.99Is the Dyson Purifier Big+Quiet Formaldehyde BP04 a good buy?
At $1200, the Dyson Purifier Big+Quiet Formaldehyde BP04 is #20 cheapest of the 21 air purifiers we track, where the median is $299.99. On the spec sheet, its release of 2023 is above the median of the 16. By release date, it is among the newer of the 16 we date.
Evidence of Record
Our data- Independent labsmeasured it
- 3
- Physical metricsrecorded
- 4
- Outlets on recordall tested
- 3
3 independent labs measured this product, logging 4 distinct physical metrics between them — noise, cadr for smoke, pm2.5 at max and pm10 at max. That is how much independent evidence stands behind any claim about it — not a rating of the product.
Review consensus · sourced & dated
What reviewers say about the Dyson Purifier Big+Quiet Formaldehyde BP04
Three whitelisted outlets (TechRadar, Reviewed/USA Today, TechHive) hands-on or lab tested the Dyson Purifier Big+Quiet Formaldehyde; TechRadar and Reviewed covered the higher CO2-sensor trim (aligned with BP04) while TechHive tested the base Formaldehyde unit. All quotes and measured values below were verified as literal substrings of the fetched pages. All rate it a powerful, genuinely quiet large-room purifier with standout formaldehyde/VOC filtration and rare five-year HEPA H13 filter life, but flag its very high price and bulk. Reviewed's lab pegs particle CADR at only ~200 CFM (smoke) — good, not class-leading — and Dyson publishes no official CADR.
Based on 3 reviews · 3 lab-tested · 2023-11-01–2024-04-29
Tested by TechRadar, Reviewed, TechHive
Consistently praised
- Powerful; cleans very large open-plan spaces · 3 sources
- Very long filter life (five-year HEPA H13) · 3 sources
- Detailed sensors and a clear, useful app · 3 sources
- Easy to move on built-in wheels · 3 sources
- Acoustically quiet despite its power · 2 sources
Commonly flagged
- Very expensive; costs a small fortune · 3 sources
- Big, heavy and bulky (26 lbs, ~33 in tall) · 3 sources
- Produces a strong, physically noticeable airflow/wind nearby
- Particle CADR good but not class-leading; Dyson publishes no official CADR
Where reviewers disagree Particle-cleaning performance is where the sources diverge: TechHive measured a strong PM2.5 drop (132 to 3 in under 15 minutes) and called it efficient, while Reviewed's lab estimated smoke CADR at only ~200 CFM — 'good' but beaten by cheaper units like the Blueair Blue Pure (250 CFM). The fan's airflow also splits them: TechHive flags a 'physically noticeable airflow' in the machine's vicinity as a con, whereas TechRadar found the air circulation pleasant and said the hum 'disappears into the background as white noise.'
The sources (3)
noise at fan level 10, phone mic below main jet (smartphone app; reviewer notes no calibrated sound meter): 60 dB
It was not love at first sight with the Dyson Purifier Big+Quiet Formaldehyde, but after just one day of using it in my own home, I don't want to ever be parted from it
the hum of the Big+Quiet, even at full bore, disappears into the background as white noise.
That's a lot of features that will cost you a lot of money – it is Dyson's most expensive domestic-use purifier to date.
CADR for smoke (Reviewed lab estimate): ~200 CFM
For VOCs, it's the best of the best. It does a better job than any other filter we've tested
Our tests suggest that this unit's CADR is about 200 CFM, where smoke is concerned.
This air purifier's $1,099.99 MSRP is much higher than many other air purifiers that have made our best-of list.
PM2.5 at max power, 20 m² room, <15 min (PCE-PCO 1 particle counter): 132 to 3 · PM10 at max power, 20 m² room, <15 min (PCE-PCO 1 particle counter): 13 to 1
The unit purifies efficiently, and in auto mode the sensors react instantly to the slightest deviation in the air.
PM2.5 was reduced from 132 to 3 and PM10 from 13 to 1 in less than 15 minutes.
the bulky and heavy Purifier Big Plus Quiet creates a physically noticeable airflow in its vicinity, and it costs a small fortune.
Specifications
| Price (US) | $1199.99 — current on record (was $929.99) |
|---|---|
| Brand | Dyson |
| Released | 2023 |
| Cadr smoke (CFM) | — |
| Coverage (sq ft) | — |
| Hepa | Yes |
| Filter type | 360° HEPA H13 + K-Carbon filter + SCO (Selective Catalytic Oxidization) formaldehyde filter |
| Noise db min | — |
| Smart | Yes |
| Energy star | No |
Source: dyson.com (verified 2026-06-15) · corroborated by dyson.com. dyson.com product page confirms HEPA H13-grade 360° filter, K-Carbon filter (2-yr life), SCO permanent formaldehyde filter, MyDyson app + Alexa/Google Home/Siri, 10 speed settings, 50° oscillation, 32.68 in height, 26.24 lb, captures 99.97% of particles ≥0.1 microns, 2-year warranty, $929.99 current price. Dyson does not publish CADR (cfm) or room sq ft coverage for this model anywhere on the product page — both null per confirmed absence. Night mode 50% quieter than prior Dyson purifiers (no absolute dB figure given) — noise_db_min null. Energy Star not mentioned. Dyson not in Energy Star certified room air cleaners database.
Is the Dyson Purifier Big+Quiet Formaldehyde BP04 worth it vs cheaper air purifiers?
Dyson Purifier Big+Quiet Formaldehyde BP04 against its closest cheaper and pricier air purifiers on the specs that matter — every value sourced. See all 21 ranked
| Product | Price | Hepa | Filter type | Smart | Energy star | Release |
|---|---|---|---|---|---|---|
| Dyson Purifier Big+Quiet Formaldehyde BP04 this | $1199.99 | Yes | 360° HEPA H13 + K-Carbon filter + SCO (Selective Catalytic Oxidization) formaldehyde filter | Yes | No | 2023 |
| Molekule Air Pro | $1014.99 | Yes | PECO-HEPA Tri-Power filter + Activated Carbon (PECO = Photo Electrochemical Oxidation, destroys pollutants) | Yes | No | 2021 |
Frequently asked questions
What do reviewers say about the Dyson Purifier Big+Quiet Formaldehyde BP04?
Three whitelisted outlets (TechRadar, Reviewed/USA Today, TechHive) hands-on or lab tested the Dyson Purifier Big+Quiet Formaldehyde; TechRadar and Reviewed covered the higher CO2-sensor trim (aligned with BP04) while TechHive tested the base Formaldehyde unit. All quotes and measured values below were verified as literal substrings of the fetched pages. All rate it a powerful, genuinely quiet large-room purifier with standout formaldehyde/VOC filtration and rare five-year HEPA H13 filter life, but flag its very high price and bulk. Reviewed's lab pegs particle CADR at only ~200 CFM (smoke) — good, not class-leading — and Dyson publishes no official CADR. Praised: Best-in-class formaldehyde/VOC chemical filtration; Powerful; cleans very large open-plan spaces; Acoustically quiet despite its power; Very long filter life (five-year HEPA H13); Detailed sensors and a clear, useful app; Easy to move on built-in wheels. Flagged: Very expensive; costs a small fortune; Big, heavy and bulky (26 lbs, ~33 in tall); Produces a strong, physically noticeable airflow/wind nearby; Particle CADR good but not class-leading; Dyson publishes no official CADR. (From 3 tester reviews, 3 lab-tested.)
How much does the Dyson Purifier Big+Quiet Formaldehyde BP04 cost?
The Dyson Purifier Big+Quiet Formaldehyde BP04 has a US price of $1199.99, as of 2026-07-25.
How does the Dyson Purifier Big+Quiet Formaldehyde BP04 compare on price?
At $1200, the Dyson Purifier Big+Quiet Formaldehyde BP04 is #20 cheapest of the 21 air purifiers we track, where the median is $299.99.
Has the Dyson Purifier Big+Quiet Formaldehyde BP04's price dropped?
No — since 2026-06-27 the Dyson Purifier Big+Quiet Formaldehyde BP04 has risen 29%, from $929.99 to $1199.99; the lowest we have recorded is $929.99 (2026-06-27).
What is the lowest price the Dyson Purifier Big+Quiet Formaldehyde BP04 has been?
The lowest we have recorded for the Dyson Purifier Big+Quiet Formaldehyde BP04 is $929.99 on 2026-06-27.
Is now a good time to buy the Dyson Purifier Big+Quiet Formaldehyde BP04?
The Dyson Purifier Big+Quiet Formaldehyde BP04 is currently $1199.99; the lowest we have recorded is $929.99 (2026-06-27). Every price is dated, so you can judge it against its own history.
When was the Dyson Purifier Big+Quiet Formaldehyde BP04 released?
The Dyson Purifier Big+Quiet Formaldehyde BP04 was released 2023.
What are the Dyson Purifier Big+Quiet Formaldehyde BP04's key specs?
Dyson Purifier Big+Quiet Formaldehyde BP04 (Dyson): hepa Yes, filter type 360° HEPA H13 + K-Carbon filter + SCO (Selective Catalytic Oxidization) formaldehyde filter, smart Yes, energy star No, release 2023. Full sourced spec sheet verified 2026-06-15.
Price of record: $1199.99 at dyson.com, 2026-07-25. Other retailers may be lower — check the current price:
See Dyson Purifier Big+Quiet Formaldehyde BP04 on Amazon As an Amazon Associate we earn from qualifying purchases.Similar air purifiers
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