Formaldehyde models
TP09, HP09, BP03 and PH04 explicitly include Formaldehyde in the product name. These are Dyson’s earlier formaldehyde-focused specialist models.
Dyson Specialist Purifier Lineup · 2026
Dyson Formaldehyde Models Explained
Dyson now sells both Formaldehyde and De-NOx models across tower purifiers, Hot+Cool units, humidifier-purifiers and the large-format Big+Quiet range. The best choice depends on the extra function you actually need.
Quick Verdict: Which Model Should You Buy?
Buy the Dyson PC2 De-NOx if you want the newer purifier-and-fan generation. Choose the TP09 when it is meaningfully cheaper, the HP2 when heating matters, the PH2 when dry air is the main problem and the BP03 for a large living room.
Older TP09, HP09 and PH04 models can still be worth buying, but only when the price gap is large enough to justify choosing the previous generation.
Formaldehyde vs De-NOx
De-NOx models
PC2 De-NOx, HP2 De-NOx and PH2 De-NOx represent Dyson’s newer gas-focused generation. They should not be described as identical to older Formaldehyde models without verified comparative data.
Important: Formaldehyde is one specific gaseous pollutant. It should not be used as shorthand for universal removal of every VOC.
Dyson Formaldehyde Model Comparison
| Model | Internal model | Product type | Specialist label | Best for | Retailer |
|---|---|---|---|---|---|
| Dyson Purifier Cool Formaldehyde TP09 | TP09 | Purifier + fan | Formaldehyde | Bedrooms and standard living rooms | View on Amazon |
| Dyson Purifier Cool PC2 De-NOx | PC2 / TP12 | Purifier + fan | De-NOx | Buyers wanting the newer tower generation | View on Amazon |
| Dyson Purifier Hot+Cool HP2 De-NOx | HP2 / HP12 | Purifier + fan + heater | De-NOx | Year-round bedrooms and home offices | View on Amazon |
| Dyson Purifier Hot+Cool Formaldehyde HP09 | HP09 | Purifier + fan + heater | Formaldehyde | Buyers wanting discounted older-generation heating | View on Amazon |
| Dyson Purifier Big+Quiet Formaldehyde BP03 | BP03 | Large-format purifier | Formaldehyde | Large living rooms and open-plan spaces | View on Amazon |
| Dyson Purifier Humidify+Cool PH2 De-NOx | PH2 / PH05 | Purifier + fan + humidifier | De-NOx | Dry winter homes and heated bedrooms | View on Amazon |
| Dyson Purifier Humidify+Cool Formaldehyde PH04 | PH04 | Purifier + fan + humidifier | Formaldehyde | Discount-focused buyers who need humidification | View on Amazon |
Current Dyson Formaldehyde and De-NOx Models
Best Value Purifier and Fan
Dyson Purifier Cool Formaldehyde TP09
TP09Purifier + fanFormaldehyde
Best for: Bedrooms and standard living rooms
The simplest verified route into Dyson’s formaldehyde-focused lineup for buyers who want a tower purifier and fan without heating or humidification.
Who should skip it: Skip it if you want the newest De-NOx generation, heating, humidification or large-room performance.
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Best Newer Purifier and Fan
Dyson Purifier Cool PC2 De-NOx
PC2 / TP12Purifier + fanDe-NOx
Best for: Buyers wanting the newer tower generation
The newer premium tower-style option for buyers who want Dyson’s current gas-focused purifier-and-fan platform.
Who should skip it: Skip it if the TP09 is substantially cheaper or if you need heating, humidification or a large-room unit.
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Best Purifier, Heater and Fan
Dyson Purifier Hot+Cool HP2 De-NOx
HP2 / HP12Purifier + fan + heaterDe-NOx
Best for: Year-round bedrooms and home offices
The most versatile specialist Dyson for buyers who want advanced gas-focused filtration plus both fan and heating functions.
Who should skip it: Skip it if you do not need heating, need humidification or want a large-room purifier.
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Best Lower-Cost Hot+Cool
Dyson Purifier Hot+Cool Formaldehyde HP09
HP09Purifier + fan + heaterFormaldehyde
Best for: Buyers wanting discounted older-generation heating
The previous formaldehyde-focused Hot+Cool generation and the better value when priced meaningfully below the newer HP2.
Who should skip it: Skip it if the HP2 costs only slightly more or if you want the newest generation.
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Best for Large Rooms
Dyson Purifier Big+Quiet Formaldehyde BP03
BP03Large-format purifierFormaldehyde
Best for: Large living rooms and open-plan spaces
The strongest Dyson formaldehyde model for buyers who need room-scale airflow and purification in a large shared space.
Who should skip it: Skip it for small bedrooms, limited floor space, heating or humidification needs.
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Best for Dry Air
Dyson Purifier Humidify+Cool PH2 De-NOx
PH2 / PH05Purifier + fan + humidifierDe-NOx
Best for: Dry winter homes and heated bedrooms
The best current Dyson for households that genuinely need both advanced gas-focused purification and active humidification.
Who should skip it: Skip it in humid climates, if you dislike water-system maintenance or if you need heating.
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Best Older Humidifier Alternative
Dyson Purifier Humidify+Cool Formaldehyde PH04
PH04Purifier + fan + humidifierFormaldehyde
Best for: Discount-focused buyers who need humidification
The older formaldehyde-focused purifier-humidifier and the better-value option only when discounted and still available.
Who should skip it: Skip it if you want the newest generation or are concerned about long-term availability.
Check Current Price As an Amazon Associate, SmartShopping.Guide may earn from qualifying purchases. Retailer pricing and availability can change.
TP09 vs PC2 De-NOx
Choose TP09 when it is meaningfully cheaper. Choose PC2 De-NOx if you want the newer product generation. Do not assume the PC2 is categorically better without verified comparative performance data.
HP09 vs HP2 De-NOx
Choose HP09 for value and HP2 for the newer platform. Both models only make sense when you will use the heating function regularly.
PH04 vs PH2 De-NOx
Choose PH04 when discounted and still available. Choose PH2 for the current humidifier generation. Both require more cleaning and maintenance than purifier-only models.
TP09 vs Big+Quiet BP03
Choose TP09 for bedrooms and ordinary living spaces. Choose BP03 for large shared rooms and open-plan areas. The BP03 does not include heating or humidification.
Which Model Fits Your Need?
| Buyer need | Recommended Dyson | Why |
|---|---|---|
| Purifier and fan at the lower verified price | TP09 | Older generation, but often the better value |
| Newer purifier-and-fan generation | PC2 De-NOx | Current tower platform |
| Purifier, heater and fan | HP2 De-NOx | Best current multifunction choice |
| Lower-cost Hot+Cool | HP09 | Worth considering when discounted |
| Large living room | BP03 | Large-format projected airflow |
| Purification plus humidification | PH2 De-NOx | Best current dry-air solution |
| Discounted older humidifier | PH04 | Only while pricing and availability remain attractive |
Important Buying Cautions
“Cool” does not mean air-conditioning
Dyson Cool models move room air and create a cooling sensation. They do not refrigerate the room.
De-NOx is not a medical feature
De-NOx is a filtration and product-positioning designation, not a claim that the purifier is medical equipment.
Humidifier models need maintenance
PH04 and PH2 combine a water system with purification, so regular cleaning is part of ownership.
Older models need a real discount
TP09, HP09 and PH04 are only compelling when their price is sufficiently below the newer replacement.
Final Verdict
The Dyson PC2 De-NOx is the best newer purifier-and-fan choice. The TP09 remains the best value tower when discounted, HP2 is the best heater model, BP03 is the best for large rooms and PH2 is the best for dry air.
FAQ
Which Dyson formaldehyde purifier is best for most buyers?
The PC2 De-NOx is the best newer tower model, while the TP09 is the better value when meaningfully cheaper.
What is the difference between Formaldehyde and De-NOx models?
Formaldehyde models are the earlier specialist generation, while De-NOx identifies Dyson’s newer gas-focused positioning.
Which Dyson formaldehyde model includes heating?
The HP09 and HP2 De-NOx both combine purification, fan airflow and heating.
Which model is best for a large room?
The Big+Quiet BP03 is the best Dyson formaldehyde-focused model for large living rooms and open-plan spaces.
Which model is best for humidification?
The PH2 De-NOx is the best current option, while PH04 can make sense as a discounted older alternative.
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