The Dyson
Purifier Humidify+Cool PH2 De-NOx is part of the
Air Purifiers test program at
Consumer Reports. In our lab tests, Room Air Purifier
models like the Purifier Humidify+Cool PH2 De-NOx are rated on multiple criteria, such as those
listed below.
Dust, pollen, smoke removal (low):
How well a model clears air of dust and smoke when operating at a lower, quiet speed.
Dust, pollen, smoke removal (high):
How well a model clears air of dust and smoke when operating at its highest speed.
Noise (low speed):
How loud a model is at the speed used for Low Speed testing.
