Why it matters
The Dyson Purifier Cool Formaldehyde TP09 Air Purifier is a purifier fan air purifier that its maker rates for 101 square feet.
At the usual 4.8 air changes an hour and an 8-foot ceiling, a 101-square-foot rating implies about 65 cubic feet of clean air a minute. In a 12-by-15-foot bedroom that would turn the air over roughly 3 times an hour.
Filtration: HEPA.
It qualifies for our lists Best Air Purifiers for Allergies, Best Air Purifiers for Apartments and Dorms, where it is ranked against every model that meets the same rule.
Its rated room size of 101 square feet is one of the smallest ratings we cover: 3 of the 152 purifiers with a stated figure come in lower, and the range runs from 62 square feet to 4,800 square feet.
Compared with the Dyson Purifier Hot+Cool HP07 Air Purifier: rated room size 101 square feet here vs 73 square feet.
Who it's for, and who should skip it
Good fit if
- Rooms up to about 101 square feet
- Allergy season
Look elsewhere if
- Whole-home filtration on its own
- Removing gases without a substantial carbon stage
Pros and cons
Pros
- Rated for 101 square feet
Cons
- Filters are an ongoing cost
- Size to the room at 4.8 air changes per hour
Limitations to weigh
- Specifications are the maker's or seller's own figures; check fit against your equipment's model number and the actual size.
Specifications
The bracket shows where each figure comes from.
| Model number | TP09 | Retailer |
|---|---|---|
| Room coverage | 101 square feet | Retailer |
| Filter type | HEPA | Retailer |
Alternatives worth comparing
More air purifiers we cover
- Honeywell HFD360 Air Purifier
- Levoit Eleva 300X Air Purifier $129.99
- Whirlpool WP500 Whispure HEPA Air Purifier (WP500B) $264.99
- IQAir HealthPro Plus XE Air Purifier
- Honeywell HPA5300B Air Purifier
All air purifiers, compared in one table · Every Dyson product we cover
Final verdict
A practical choice for rooms up to about 101 square feet. Confirm the model it fits before ordering.
Where to buy
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