What the Dyson Purifier Cool TP09 handles
- Quick answer: A purifier and fan in one for rooms where you want cleaner air and optional cooling.
- Best for: Bedrooms, living areas, and home offices with mild cooling needs.
- Skip if: You need a dedicated air conditioner or a purifier for very large open spaces.
The Dyson Purifier Cool Formaldehyde TP09 is a two-in-one machine for homes that need both air purification and a cooling fan. It senses airborne particles and formaldehyde, then uses a 360° HEPA filter to capture 99.97% of pollutants as small as 0.3 microns. The Air Multiplier technology projects purified air across the room, so it can draw in distant pollutants rather than only cleaning the air immediately around it.
In Fan mode, you get direct cooling with adjustable oscillation from 0 to 350 degrees. Backwards airflow mode purifies without blowing air at you, which is useful when you want cleaner air but not a breeze. Night mode runs at the quietest settings with a dimmed display, and you can schedule auto-off between 30 minutes and 8 hours.
We'd consider this a strong pick for a bedroom, living room, or home office where you want filtration and a fan without two separate appliances. The MyDyson app lets you monitor air quality remotely, and the LCD screen shows filter life so you know when to replace it.
What this price means for your budget
At $499.99, this TP09 is $116.14 below the typical price of $616.13 over the last 90 days. That works out to about 19% off. It also matches the lowest price we've seen for this model, so if you've been waiting for a drop, this is a solid moment to buy.
| Offer detail | Recorded value |
|---|---|
| Amazon price | $499.99 |
| Customer rating | 4.1 |
| Customer reviews | 415 |
| Typical price over 90 days | $616.13 |
| Difference | $116.14 (19 percent) |
Placement, filters, and daily use
The TP09 is a large unit, so give it some floor space and keep it away from walls or furniture that could block airflow. It oscillates up to 350 degrees, but you'll still want to position it where the air can reach the areas you use most.
The HEPA filter is designed to be easy to replace, and the machine notifies you when it's time. Replacement filters are a running cost to factor in, though Dyson doesn't list a specific interval or price here. Check the current filter cost and expected lifespan before you buy.
Cleaning is low maintenance, but you should still wipe the exterior and keep the intake clear of dust. The app and LCD screen make it simple to track air quality and filter status without guesswork.
When the TP09 is the wrong fit
If you need serious cooling for a hot room, a dedicated air conditioner will do more than a fan mode. And if your main concern is a large open floor plan, one TP09 may not circulate enough for the whole space.
Also, if you'd rather not deal with app setup or filter replacements, a simpler purifier might suit you better. Before buying, confirm the replacement filter price and how often you'll need to change it.
Product details
| Model | TP09 |
|---|---|
| Color | White/ Gold |
| Size | Large |



