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Dyson engineers and research concluded that to clean an entire room properly, you need to sense pollution events automatically; capture ultrafine pollutants; and project cleaner air around the room using Air Multiplier technology. The Dyson purifying heater + fan is designed and tested to do all of this.
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Dyson engineers and research concluded that to clean an entire room properly, you need to sense pollution events automatically; capture ultrafine pollutants; and project cleaner air around the room using Air Multiplier technology. The Dyson purifying heater + fan is designed and tested to do all of this.

Dyson's purifying fan heaters combine intelligent sensing with an advanced filtration system. A filter removes gases and odors⁵, and a HEPA filter⁴ captures 99.97% of particles 0.3 microns⁶ in size. Powerful Air Multiplier technology purifies and heats the whole room.¹

Dyson Purifier Hot+Cool HP2 De-NOx delivers whole-room heating⁴ and powerful cooling⁶ with purified air. Advanced air purification captures 50% more NO₂.⁸ Removes odors and gases,¹ and continuously destroys formaldehyde.⁹ The fully sealed, 3-stage filter system captures 99.97% of particles as small as 0.3 microns.³ The whole purifier, not just the filtration system, is fully sealed to HEPA H13 grade.³ Air Multiplier technology projects over 76 gallons per second of smooth, yet powerful airflow.⁷ Connects to the MyDyson app to control and monitor air quality from anywhere, or hands-free with compatible voice services.⁵

Blue Pure 511i Max HEPASilent smart air purifier quickly cleans 193 sqft in about 12.5min, 465 sqft in 30 minutes and upto 926 sqft in 1 hour on high. Independently evaluated for safety standards and third-party tested for performance as part of the AHAM Verifide Program for air cleaners, this air purifier has a Clean Air Delivery Rate (CADR) of 125 for fine smoke particles, dust and pollen.
| Pros for Dyson - Refurbished Excellent - HP04 Pure Hot + Cool Smart Tower Air Purifier, Heater and Fan - Yellow | |||
|---|---|---|---|
| There were no pros for this product— | Heating Performance | Heating Performance, Noise Level, Fan Performance, Design, Oscillation | Noise Level, Air Quality, Overall Performance, Filter, Ease of Use |
| Cons for Dyson - Refurbished Excellent - HP04 Pure Hot + Cool Smart Tower Air Purifier, Heater and Fan - Yellow | |||
| There were no cons for this product— | There were no cons for this product— | There were no cons for this product— | Odor Removal |