Best overall: Honeywell Designer Series Cool Mist Humidifier - See at Amazon Best with air purifier: Dyson Purifier ...

The lowest speed may provide even quieter operation but will not be as effective at cleaning the air. Overall score for the Honeywell HPA300 is mainly how well the model removed dust and smoke ...

Dust, pollen, smoke removal is how well a model cleared air of fine clay dust and cigarette smoke when operating at a low speed that was typically one setting above the lowest speed. Many models ...