- Does it really remove formaldehyde and NOx?
- It has a dedicated sensor and a De-NOx filter alongside HEPA and carbon. It reduces these gases in a room, but it is not a substitute for ventilation.
- Can it replace a fan and a heater?
- Yes for a single room. It blows cool air in summer and heated air in winter, so it covers both seasons.
- How loud is it?
- Low speeds are near-silent. High fan speeds and heating are noticeably audible, so many owners run it lower at night.
- Does it work with Alexa and Google Home?
- Yes. It connects over Wi-Fi and also supports Siri through Apple Home, plus the Dyson app.
- How often do filters need changing?
- Dyson typically advises replacing filters about once a year, sooner in dusty homes. The app shows filter life.
- What is in the box?
- The unit, a remote control and a combined HEPA and carbon filter. Check that the De-NOx filter is fitted for gas removal.
- Where is the Dyson Hot Cool HP2 De-NOx cheapest?
- At Dyson, for $679.99, 26% under what the other stores charge, as of our latest check.
- Where can I buy the Dyson Hot Cool HP2 De-NOx?
- 7 stores we checked sell it, including Dyson, Best Buy, Chewy, The Home Depot, Abt Electronics.